Solar installation & service interview questions

A major incentive your customers relied on is ending, and sales are slowing. What do you do?

Situational · Leading through incentive changes

Strong answer

Models the impact on sales and cash, adjusts the offer and costs, keeps messaging honest, plans staffing early and looks at other lines like batteries or service.

Red flags

Tells sales to push harder before the deadline using pressure.

Customers complain that a sales partner working under your brand told them their systems would be free. What do you do?

Situational · Owning sales misconduct

Strong answer

Investigates fast, calls the affected customers, makes it right, suspends the partner if warranted and adds controls like recorded disclosures and welcome calls.

Red flags

Blames the partner and moves on.

Walk me through how the time from signed contract to permission to operate affects this business's cash and customers.

Technical · Understanding cycle-time economics

Strong answer

Funding milestones depend on install and PTO, so long cycles tie up cash and raise cancellations; tracks each stage and invests in permitting and interconnection skill.

Red flags

Treats PTO as the utility's problem.

Tell me about a time you changed who does your installs, such as moving from subcontracted crews to your own or the reverse.

Behavioral · Choosing the install model

Strong answer

Explains what drove it (leak claims, cost, capacity, quality control), how they ran the numbers, how they switched without stranding customers or jobs, and what changed afterward.

Red flags

Decided on cost alone, or can't say what happened to quality or warranty claims.

Tell me about a partnership you built with a financing company or equipment distributor that held up through a rough patch.

Behavioral · Building partnerships

Strong answer

Clear terms, mutual benefit, regular reviews and how they handled a rough patch.

Red flags

A handshake deal they didn't manage.

Tell me about something you did as a leader that measurably cut falls or near misses on roofs.

Behavioral · Safety leadership

Strong answer

Names the action, such as a safety stand-down or a roof anchor standard, and the measure that improved, like incidents or audit scores.

Red flags

Talks about safety in general terms only.

Time from signed contract to permission to operate has doubled in a year. How would you find the bottlenecks?

Situational · Cutting cycle time

Strong answer

Breaks it into stages, from survey through design, permit, interconnection, install, inspection and PTO, measures each, fixes the longest and tracks it weekly.

Red flags

Adds more install crews.

Roof leak claims are concentrated on installs done by one subcontracted crew. What do you do?

Situational · Managing subcontractor quality

Strong answer

Inspects their jobs, fixes customers' problems, requires corrections and quality checks, and ends the relationship if it doesn't improve.

Red flags

Keeps using them because they're fast.

Walk me through the roof safety program you'd set for every crew, from the first ladder to the last module.

Technical · Roof safety standards

Strong answer

A fall protection plan before anyone goes up, anchors and harnesses or another OSHA-compliant method, ladder rules, skylight covers, weather limits, a heat plan and field audits.

Red flags

Leaves it to each crew lead.

Tell me about an operations team you built from a small group, such as permitting, scheduling and install crews.

Behavioral · Building teams

Strong answer

Set clear roles for permitting, scheduling and field work, simple handoffs and the first few measures they tracked.

Red flags

Hired fast without structure.

Tell me about a measure you tracked, such as days from contract to permission to operate, that drove a real operations decision.

Behavioral · Running by measures

Strong answer

Names the measure, shows where jobs got stuck, such as permit or utility steps, and a decision it drove, like adding a permit coordinator or changing which jobs were scheduled first.

Red flags

Tracked everything and acted on nothing.

Tell me about a time crews pushed back on a change to how they install, such as a new attachment method or a required photo checklist.

Behavioral · Leading change

Strong answer

Listened, tested it with a respected crew, adjusted what was reasonable, held firm on what mattered for leaks and safety, and checked that it was used.

Red flags

Dropped the change at the first pushback.

Walk me through how you'd calculate the true profit on a residential solar install.

Technical · Install profitability

Strong answer

Starts from contract price less financing fees, then equipment, labor, permits, commissions, a warranty reserve and service costs, and compares by financing type and sales channel.

Red flags

Uses contract price minus equipment.

A loan partner raises its fees sharply next month. What do you do?

Situational · Responding to fee changes

Strong answer

Models the margin impact, reprices or shifts to other options, gives sales clear pricing and makes sure fees are disclosed properly.

Red flags

Absorbs it and hopes volume makes up for it.

Your workmanship warranty runs for many years, and roof leak claims are rising. How do you account for and manage it?

Situational · Managing warranty exposure

Strong answer

Sets a reserve based on claim history, tracks claims by crew and install year, feeds findings to operations and reviews insurance.

Red flags

Expenses claims as they come.

Tell me about a time loan partner funding delays or slow permission to operate left the company short on cash.

Behavioral · Handling cash crunches

Strong answer

Built a weekly cash plan, pushed the stuck milestones (missing documents, utility delays), worked with suppliers or the bank, delayed spending, and fixed the process that caused the delay.

Red flags

Waited for the owners or the partner to solve it, or borrowed more without fixing the cause.

Tell me about a forecast you built that turned out to be wrong, such as install volume or cancellations.

Behavioral · Learning from forecasts

Strong answer

Owns the miss, names what drove it, such as a utility interconnection backlog, a lender change or more cancellations, and the method change, like forecasting from each pipeline stage instead of signed contracts.

Red flags

Blames the market entirely.

Tell me about a time your analysis changed a decision by the CEO or owners, such as which financing partners or equipment to use.

Behavioral · Influencing leadership

Strong answer

Compared options with real numbers, such as dealer fees, funding delays and cancellations by lender, or warranty claims by equipment brand, presented it plainly, and leadership changed the decision.

Red flags

Has never pushed back.

Sales booked a record quarter, but crews can't install it all for [four] months, and cancellations are rising. What do you do?

Situational · Pacing sales to installs

Strong answer

Adds capacity carefully, gives customers realistic dates, schedules by permit readiness, works with sales on pacing and tracks cancellations weekly.

Red flags

Celebrates the sales and lets the backlog grow.

A homeowner posts online that their system has been off for months while they keep making loan payments. What do you do?

Situational · Public complaints

Strong answer

Calls them personally, finds the cause, fixes it urgently, considers fair compensation, replies publicly and briefly, and fixes the process.

Red flags

Argues in the comments.

Walk me through how you'd build the service side of this business for customers whose systems are already installed.

Technical · Building the service business

Strong answer

Sizes demand from the installed base and monitoring alerts, separates warranty work from paid service, sets response times, staffs trained techs, prices paid and orphaned-system work, and tracks callbacks and margin.

Red flags

Treats service as a cost to minimize, or pulls install crews off jobs to cover it.

Tell me about a time a sudden outside change, such as a utility tightening its interconnection rules, forced your team to change how it worked.

Behavioral · Leading through market change

Strong answer

Got the facts, told the team honestly, updated designs, paperwork or sales promises quickly, and tracked whether jobs stopped stalling.

Red flags

Waited to see what would happen, or kept selling on the old rules.

Tell me about a manager you hired, such as for permitting or installs, who turned out to be a great fit.

Behavioral · Hiring managers

Strong answer

Names what they tested for (permitting know-how, crew leadership) and how they checked it during hiring.

Red flags

Went on gut feel.

Tell me about a time you slowed sales or installs to fix a quality problem, such as roof leaks.

Behavioral · Quality over growth

Strong answer

Used data on callbacks or cancellations and showed the cost of not fixing it.

Red flags

Has always chosen growth.

Walk me through how you check roof attachments and flashing on an install before modules go on.

Technical · Checking attachments and flashing

Strong answer

Confirms attachments hit structure at the engineered spacing, flashing sits under the course above, sealant and torque follow the manufacturer, no shingles are cracked and photos are taken.

Red flags

Glances from the ground.

Walk me through your pre-inspection walk of a residential system's electrical work.

Technical · Pre-inspection electrical walk

Strong answer

Wires secured off the roof surface, matched and fully seated connectors, grounding and bonding, conduit and fittings, required labels, rapid shutdown, breaker size and position, and as-built matching the plans.

Red flags

Waits for the inspector to find problems.

You find the crew walking the roof without tying off because they say the anchors take too long. What do you do?

Situational · Stopping fall protection shortcuts

Strong answer

Stops the work, gets everyone tied off, explains why, documents it and looks at whether schedule pressure caused it.

Red flags

Tells them to be careful.

The crew finds rotted roof decking where the array is supposed to go. What do you do?

Situational · Handling hidden roof damage

Strong answer

Stops work in that area, takes photos, tells the homeowner and project manager, and gets the repair done before installing.

Red flags

Installs over it.

Tell me about a time you taught a crew a better way to do a roof task, such as flashing attachments or managing wire.

Behavioral · Teaching better methods

Strong answer

Showed it, explained why and saw quality or speed improve.

Red flags

Just told them to do better.

Tell me about a time a homeowner complained to you on site, such as about roof damage or where the panels went.

Behavioral · Handling homeowner concerns

Strong answer

Listened, explained clearly, fixed what was fair and followed up.

Red flags

Got defensive.

You need [ten] installers and [two] licensed electricians for a busy spring. What would you do?

Situational · Spring hiring

Strong answer

Uses referrals, trade schools and solar training programs, recruits from roofing and electrical work, checks pay against the market, moves fast and schedules safety training before day one.

Red flags

Posts an ad and waits.

A sales rep says they were shorted on commission for jobs that canceled after install. What do you do?

Situational · Commission disputes

Strong answer

Reviews the written plan and the numbers with payroll and finance, checks wage law, explains the result clearly and fixes unclear plan language.

Red flags

Sides with the manager without checking.

Walk me through how you'd make sure every field employee has the safety training they need before going on a roof.

Technical · Safety training compliance

Strong answer

Builds a training list by role, including fall protection, ladders, electrical safety and heat illness where required, tracks dates, blocks roof work until it's done and shares status with dispatch.

Red flags

Trains when someone asks.

Tell me about a time you investigated a complaint that a sales manager pressured reps to mislead customers.

Behavioral · Investigating complaints

Strong answer

Interviewed everyone involved, gathered records like call recordings and texts, kept it confidential, guarded against retaliation and decided on the evidence.

Red flags

Protected the manager because of their sales numbers.

Tell me about a training program you built that improved roof safety or install quality in the field.

Behavioral · Training that improves the field

Strong answer

Describes a program, such as roof safety or flashing training with field sign-offs, and a measure that improved, like leak claims or audit scores.

Red flags

Counted attendance only.

Tell me about a time you helped the company reduce staff after a drop in solar demand.

Behavioral · Fair reductions in force

Strong answer

Used job-related criteria, checked for bias, gave required notices (including WARN where it applies) and correct final pay, and treated people with respect.

Red flags

Let managers pick without criteria.

The owner wants ads saying homeowners can go solar for free and wipe out their power bill. How do you respond?

Situational · Accurate claims

Strong answer

Explains these claims mislead customers and draw regulator attention, and offers accurate savings language with clear assumptions and no tax promises.

Red flags

Runs them because competitors do.

A vendor offers cheap shared solar leads. How would you evaluate them?

Situational · Evaluating purchased leads

Strong answer

Checks proof of consent to be contacted, exclusivity and contact rates, tests a small batch and measures through to installs.

Red flags

Buys a big batch because the price is low.

Walk me through how you'd track a lead from first contact to permission to operate, so you know which sources actually pay off.

Technical · Measuring to installs

Strong answer

Tracks source through the CRM from appointment to sale, cancellation, install and PTO, and reports cost per installed job by source.

Red flags

Reports cost per appointment.

Tell me about a campaign built on real customer stories, such as savings or install experiences.

Behavioral · Customer stories

Strong answer

Got written permission, used real numbers with context and checked them against actual bills before publishing.

Red flags

Wrote testimonials themselves.

Tell me about a time you dropped a lead source that sales loved because its customers kept canceling.

Behavioral · Cutting popular channels

Strong answer

Showed cancellation and install rates by source, made the case with sales, and moved budget to something better.

Red flags

Avoided the conversation.

Tell me about a time you protected a company's reputation after other solar sellers had burned customers in your area.

Behavioral · Building trust

Strong answer

Used honest savings ranges instead of promises, showed local installs and reviews, explained who services the system after install, and answered complaints quickly and in public.

Red flags

Matched competitors' claims.

Walk me through how you'd track permits, utility applications, inspection results and financing documents across [100] open jobs.

Technical · Tracking job paperwork

Strong answer

One tracker by job and stage with owners and due dates, regular portal checks, alerts for stalled items and a weekly review with project managers.

Red flags

Relies on email folders.

A financing partner won't release a milestone payment because a signed completion certificate is missing. What do you do?

Situational · Unblocking milestone payments

Strong answer

Gets it signed electronically, confirms the partner's full requirement list, resubmits and adds it to the closeout checklist.

Red flags

Waits for the homeowner to send it.

A cash customer won't pay the final invoice until the utility approves the system, but the contract says payment is due at install. What do you do?

Situational · Handling billing disputes

Strong answer

Reviews the contract, listens, explains the terms calmly, involves the manager on any compromise and documents everything.

Red flags

Threatens the customer.

Tell me about a time you organized a messy set of job records, such as permits or financing documents.

Behavioral · Organizing records

Strong answer

Set a simple system, trained people and checked it regularly.

Red flags

Cleaned it up once and it fell apart.

Tell me about a time you kept field teams and the office on the same page during a rush of installs, such as before an incentive deadline.

Behavioral · Keeping teams aligned

Strong answer

A short daily check-in or shared board, and fewer dropped tasks as a result.

Red flags

Everyone did their own thing.

Tell me about a time you caught a final invoice that didn't match the signed solar contract, such as a missing adder, a wrong system size or the wrong financing terms.

Behavioral · Contract-to-invoice accuracy

Strong answer

Names the check that caught it (matching the invoice to the contract, change orders and financing documents), how they fixed it before it went out, and the step added to prevent repeats.

Red flags

Can't name a check they run on invoices, such as matching the contract and financing terms, or catches errors only when customers complain.

You have [five] crews, [12] jobs ready to install, [four] waiting on permits and [30] open service calls. How do you plan next week?

Situational · Planning installs and service

Strong answer

Schedules ready jobs, protects dedicated service capacity, watches permit timing, matches crew skills and tells customers realistic dates.

Red flags

Puts every crew on installs and lets service wait.

Several customers say crews left a mess and parked on lawns. What do you do?

Situational · Site cleanliness complaints

Strong answer

Apologizes and fixes the damage, sets site standards with a photo checklist, coaches crews and follows up.

Red flags

Tells customers that's normal on construction.

Walk me through how you'd organize service calls so the right tech arrives with the right parts.

Technical · Organizing service

Strong answer

Triages by phone and monitoring data, collects inverter codes and photos, checks warranty and manufacturer returns, stages parts and closes the loop with the customer.

Red flags

Sends a tech to look first.

Tell me about a time you cut the number of install days lost to missing parts, permits or deliveries.

Behavioral · Cutting wasted crew time

Strong answer

Names the causes, the change (day-before readiness checks, staging, delivery timing) and the measured result in lost days or jobs finished.

Red flags

Just asked for more hours.

Tell me about a crew lead you coached through repeated quality issues, such as missed flashing details or failed inspections.

Behavioral · Coaching quality

Strong answer

Used evidence, set clear standards and followed up on their jobs.

Red flags

Gave up or replaced them without coaching.

Tell me about a time you worked with suppliers to fix delivery problems, such as modules arriving damaged or batteries shipping late.

Behavioral · Fixing deliveries

Strong answer

Found the cause, agreed on changes and tracked on-time deliveries afterward.

Red flags

Complained but nothing changed.

Walk me through the code and safety areas you'd audit on rooftop installs.

Technical · Auditing code and safety

Strong answer

Fire code roof pathways and setbacks, attachments per engineering, electrical work including grounding, rapid shutdown, labels and breaker rules, fall protection and roof waterproofing.

Red flags

Checks only that the system turns on.

First-time inspection pass rates fell this quarter. How would you fix it?

Situational · Raising inspection pass rates

Strong answer

Sorts failures by cause, crew and inspector, adds a photo pre-inspection checklist, fixes plan set issues with design and coaches crews.

Red flags

Tells crews to be more careful.

A subcontracted crew is fast but keeps skipping fall protection. What do you do?

Situational · Subcontractor safety

Strong answer

Stops their work, enforces the contract's safety terms, requires a plan, audits them and ends the relationship if it continues.

Red flags

Lets it go because they're not our employees.

Tell me about a roof safety rule you introduced that crews resisted at first.

Behavioral · Safety programs that stick

Strong answer

Kept the rule simple, such as anchors set before anyone works the roof, explained why, audited jobs unannounced and acted on what they found.

Red flags

A binder nobody read.

Tell me about a time you changed install methods or equipment, such as a new racking or attachment system, to speed up installs.

Behavioral · Speed without quality loss

Strong answer

Names the change, how they trained crews and checked the first jobs, and the quality measures (leak claims, inspection pass rate) that held.

Red flags

Callbacks or leaks rose and they didn't track it, or can't name a quality measure.

Tell me about a time you personally fixed a bad install experience for a customer, such as a leak or a system that stayed off for weeks.

Behavioral · Customer recovery

Strong answer

Took ownership, fixed it quickly and changed something so it wouldn't recur.

Red flags

Left it to service.

Walk me through what you check when a signed solar contract is handed to you from sales.

Technical · Reviewing the sales handoff

Strong answer

Site survey, roof age and condition, shading, main panel capacity, HOA rules, utility account details, financing terms and whether the design matches what was sold.

Red flags

Sends it straight to design.

Walk me through how you get from install to permission to operate with the utility.

Technical · Getting to permission to operate

Strong answer

Makes sure the interconnection application is approved, the inspection is passed and signed off to the utility, utility requests are answered, the meter work is done, then turns on monitoring and tells the homeowner.

Red flags

Waits for the utility to call.

On install day, the crew finds the main panel can't take the backfeed breaker the design assumed. What do you do?

Situational · Handling panel surprises

Strong answer

Stops the tie-in, reviews options like a supply-side connection or panel upgrade with design, revises the permit, prices any change and reschedules with the homeowner.

Red flags

Lets the crew make it fit.

A utility hasn't responded to an interconnection application in [eight] weeks, and the homeowner is angry. What do you do?

Situational · Escalating stalled utilities

Strong answer

Checks the portal for missing items, escalates through utility contacts, gives the homeowner an honest update and documents it.

Red flags

Tells the homeowner to call the utility.

Tell me about the system you used to keep many homeowners updated while their jobs waited on permits and the utility.

Behavioral · Updating many homeowners

Strong answer

Scheduled updates by stage with templates and personal follow-up when something moved.

Red flags

Updated people only when they called.

Tell me about a time you caught a plan set error before install day, such as a wrong module count or a breaker size that didn't fit the main panel.

Behavioral · Catching plan errors

Strong answer

Checked the plan set against the site survey, photos and contract, confirmed the error with the designer, got a revised set before install day, and avoided a failed inspection or a return trip.

Red flags

Doesn't review plan sets.

A top rep's customers keep saying they were promised a tax credit that their tax preparers say they can't claim. What do you do?

Situational · Stopping misrepresentation

Strong answer

Investigates with customers and recordings, corrects it with each customer in writing, disciplines or removes the rep, retrains the team to send tax questions to a tax professional, and adds welcome-call checks.

Red flags

Protects the top rep because of their numbers.

Cancellations after signing are rising on your team. How would you find out why?

Situational · Diagnosing cancellations

Strong answer

Calls canceled customers, looks at patterns by rep, lead source and financing, finds the promises behind it and fixes them.

Red flags

Blames buyer's remorse.

Walk me through what every proposal your team sends must include to be accurate.

Technical · Proposal standards

Strong answer

System size, a production estimate with shading assumptions, the utility rate assumption, total cost and financing terms including fees and escalators, incentives marked as not guaranteed, and warranties.

Red flags

A monthly payment and a savings number.

Tell me about a rep you developed into a top performer whose cancellations stayed low.

Behavioral · Developing reps

Strong answer

Names the skill, such as reading utility bills or explaining financing, practiced it with the rep and tracked both sales and cancellations.

Red flags

They were already good.

Tell me how you've kept candidates off your team who might promise free systems or guaranteed savings.

Behavioral · Hiring for integrity

Strong answer

Uses scenario questions, reference checks on how they sell and early monitoring of new reps.

Red flags

Hires for confidence alone.

Tell me about a commission plan you changed because it rewarded the wrong behavior, such as paying on signed deals that canceled before install.

Behavioral · Commission design

Strong answer

Explains the goal, such as fewer cancellations, a plan tied to installed and kept systems, and the result.

Red flags

Paid on signatures and ignored cancellations.

Walk me through how you'd receive and store solar modules and batteries safely.

Technical · Receiving and storing equipment

Strong answer

Inspects pallets and notes damage on the delivery receipt, stores modules the way the manufacturer specifies, protects them from weather, stores batteries per the manufacturer and fire code, and handles loads safely.

Red flags

Stacks everything wherever there's room.

Walk me through how you'd keep serial numbers of inverters and batteries tied to the right jobs.

Technical · Tracking serial numbers

Strong answer

Scans serials at receiving and picking, records them on the job, supports warranty registration and tracks returns.

Red flags

Tracks counts only.

Modules delivered to a home were left on the driveway overnight, and some went missing. What do you do?

Situational · Securing site deliveries

Strong answer

Reports it, files the claim, reorders, tells the project manager and customer, and changes delivery timing so material isn't left unattended.

Red flags

Absorbs the loss and changes nothing.

Crews keep leaving the yard late because materials aren't staged. How would you fix it?

Situational · Staging for crews

Strong answer

Stages the night before from pick lists, labels by job, uses a checklist and measures departure times.

Red flags

Tells crews to come earlier.

Tell me about a forklift or loading safety problem you fixed, such as module pallets stacked too high or loose loads on trucks.

Behavioral · Loading safety

Strong answer

Names the hazard and the fix and how they kept it fixed.

Red flags

Can't name a hazard they fixed, or moves module pallets and batteries without set rules for stacking, strapping or forklift traffic.

Tell me about a time you trained a warehouse team on a new process, such as scanning serial numbers.

Behavioral · Training warehouse staff

Strong answer

Showed the process, had people practice it, checked their work and adjusted the steps that confused them.

Red flags

Sent an email.

A homeowner calls angry: panels went on [six] weeks ago, and the system still isn't on. What do you tell them?

Situational · Explaining the wait for PTO

Strong answer

Checks the job status, explains in plain words that inspection and utility permission come before turn-on, gives a realistic next step, escalates to the project manager and calls back.

Red flags

Promises it will be on this week.

A customer says water is dripping into their attic near where panels were installed. What do you do?

Situational · Urgent leak calls

Strong answer

Treats it as urgent, gets details and photos, suggests protecting belongings, books priority service, tells the manager and documents it.

Red flags

Books the next routine opening.

A customer asks whether they'll get a tax credit for their system. What do you say?

Situational · Tax questions

Strong answer

Explains they can't give tax advice, suggests a tax professional, and offers the paperwork the customer may need.

Red flags

Says yes, everyone gets one.

A customer says the monitoring app shows zero production on a sunny day. Walk me through what you'd ask and check before booking a visit.

Technical · Phone troubleshooting

Strong answer

Asks about inverter lights, tripped breakers, Wi-Fi changes and power outages, since systems without batteries shut off when the grid is down; checks the portal; books a visit if needed.

Red flags

Books a visit without asking anything.

Tell me about a time you explained something complicated to a customer in plain words, such as net metering credits on their first bill after solar.

Behavioral · Plain-language explanations

Strong answer

Used simple steps and checked understanding by asking them to say back the next step.

Red flags

Assumed they understood.

Tell me about a time you owed a customer a callback, such as an answer about a monitoring alert, and then things got busy.

Behavioral · Keeping promises

Strong answer

Called back anyway, even with a short update, and set reminders.

Red flags

Forgot and waited for the customer to call.

Storms are forecast for tomorrow afternoon, and you have [four] installs and [six] service calls booked. What do you do?

Situational · Weather planning

Strong answer

Checks weather rules with operations, moves or shortens roof work so no roof is left open, keeps ground-level service going and calls affected customers.

Red flags

Keeps the schedule and hopes.

An inspector moves a final inspection up to this morning, and the lead installer for that job is on a roof across town. What do you do?

Situational · Protecting inspections

Strong answer

Finds another qualified person with the documents, or asks the inspector for a later slot, and tells the project manager right away.

Red flags

Misses the inspection.

A crew arrives for an install, and the inverter isn't on site. What do you do?

Situational · Missing equipment

Strong answer

Checks with the warehouse, decides with the lead whether to install racking and modules now, tells the customer and logs the cause.

Red flags

Sends the crew home without telling anyone.

Walk me through how you'd match crews to jobs for the week.

Technical · Matching crews to jobs

Strong answer

Matches roof type and crew experience, battery or ground mount skills, electrical license needs, permit and delivery status, homeowner availability and travel.

Red flags

Fills open slots in order.

Tell me about a time a schedule error caused a problem, such as a crew arriving before the permit or equipment.

Behavioral · Fixing schedule errors

Strong answer

Owns it and names a check they added, such as confirming permits and deliveries the day before.

Red flags

Blames others.

Tell me about a time you kept a customer calm while their install kept moving, such as rain delays followed by a late inverter.

Behavioral · Customer updates

Strong answer

Called early each time, explained honestly and offered real options.

Red flags

Avoided the customer.

Walk me through how you'd track payments from a solar loan partner that pays in milestones, such as at install and at permission to operate.

Technical · Financing milestone payments

Strong answer

Records a receivable for each milestone by job, books the partner's fees correctly, matches funding statements to deposits and chases stalled milestones with the office.

Red flags

Records deposits as they come without tying them to jobs.

Walk me through how you'd handle a sales commission when the customer cancels after the rep was paid.

Technical · Commission clawbacks

Strong answer

Follows the written commission plan, records the clawback against future commissions, tells the rep and payroll, and checks state rules on pay deductions first.

Red flags

Deducts it from the next paycheck without checking the plan or the law.

Funding for [12] jobs is stuck because the loan partner says documents are missing. What do you do?

Situational · Unsticking funding

Strong answer

Lists what's missing for each job, works with the office and project managers to get it, resubmits and reports the cash impact.

Red flags

Waits for the partner to sort it out.

A distributor credits only part of a returned inverter shipment. What do you do?

Situational · Vendor credits

Strong answer

Matches the return authorization and shipping records to the terms, disputes the difference with documents and follows up until resolved.

Red flags

Accepts the partial credit.

Tell me about a reconciliation that took a while to solve, such as loan partner funding that didn't match deposits.

Behavioral · Solving reconciliation puzzles

Strong answer

Explains the steps that found the cause and the fix that prevents a repeat.

Red flags

Forced it to balance.

Tell me about a bookkeeping process you made faster or more accurate, such as tracking loan partner milestones or commission clawbacks.

Behavioral · Improving bookkeeping processes

Strong answer

Names the process, such as tracking funding milestones, the change and the result.

Red flags

Has never changed a process.

Walk me through how you'd make sure the modules, inverters and racking pulled for a job match the approved plan set.

Technical · Matching material to the plan set

Strong answer

Builds the pick list from the plan set's models and counts, scans items, flags any substitute for approval and labels everything by job.

Red flags

Pulls similar items from memory.

The distributor ships a different inverter model than the one on the permit and utility application. What do you do?

Situational · Catching substitutions

Strong answer

Holds it, tells the project manager before install because the change may need revised approvals, and arranges an exchange.

Red flags

Sends it out since it's the same size.

During a count, you find [six] modules with cracked glass or bent frames. What do you do?

Situational · Damaged stock

Strong answer

Tags and separates them, takes photos, files a claim with the carrier or distributor, updates counts and tells operations.

Red flags

Leaves them in stock.

Battery deliveries are delayed, and [five] installs depend on them. What do you do?

Situational · Managing delayed equipment

Strong answer

Tells project managers and dispatch right away, checks other sources and helps plan whether solar can go in first if approved.

Red flags

Waits for the shipment.

Tell me about a time you fixed a recurring problem tracking serial-numbered equipment, such as inverters, batteries or optimizers.

Behavioral · Tracking serial-numbered equipment

Strong answer

Found the root cause (serials not scanned at pick, swaps on site not reported), changed the process, such as scanning at pick and install, and checked that it held.

Red flags

Fixed records one at a time without finding why serial numbers went missing.

Tell me about a time you worked with field crews to forecast the material they'd need, such as rails and attachments for the coming month.

Behavioral · Forecasting with crews

Strong answer

Used schedules and usage history and checked in with leads regularly.

Red flags

Waited for orders.

Walk me through what you look at in a home's utility bills, roof and electrical panel before you design a solar proposal.

Technical · Assessing a home

Strong answer

Reviews a year of utility bills and the rate plan, roof age and condition, orientation and shading, main panel, HOA rules, net metering rules and the homeowner's goals.

Red flags

Looks at satellite photos and quotes a size.

The homeowner's roof looks near the end of its life, and they want solar now. What do you advise?

Situational · Honest roof advice

Strong answer

Explains panels would need to come off for a re-roof later at a cost, recommends roofing first or together and documents the conversation.

Red flags

Sells the system and stays quiet about the roof.

A homeowner asks you to explain the difference between a loan, a lease and a power purchase agreement. How do you explain it?

Situational · Explaining financing

Strong answer

Covers ownership, who gets incentives, payments, escalators, what happens when the home sells and total cost, in plain words without pushing.

Red flags

Uses jargon or steers to whatever pays most.

Tell me about a sale where the homeowner took weeks to decide while comparing loan, lease or cash offers.

Behavioral · Closing without pressure

Strong answer

Answered concerns, set clear next steps and respected their timeline.

Red flags

Used false deadlines.

Tell me about a solar deal you lost because a competitor's proposal promised more savings than yours.

Behavioral · Learning from losses

Strong answer

Explains how they showed the homeowner the differences honestly (production assumptions, rate increases, financing fees), didn't inflate their own numbers, and what they now do earlier in the sale.

Red flags

Matched the inflated numbers, or blames price and changed nothing.

Tell me about a time you worked with the install team to fix a problem with something you sold, such as a design that didn't fit the roof or a main panel that needed an upgrade.

Behavioral · Working with installers

Strong answer

Owned their part, worked with the team and kept the customer informed.

Red flags

Disappeared after the sale.

You have [150] homeowners who got a proposal but didn't sign, many from before an incentive changed. How do you approach them?

Situational · Refreshing old proposals honestly

Strong answer

Updates the numbers with current rates and incentives, groups leads by reason, reaches out with an accurate new proposal and applies no pressure.

Red flags

Sends the old savings numbers.

A homeowner canceled because their loan came back at a higher rate than expected. How would you follow up?

Situational · Financing cancellations

Strong answer

Learns what they need, offers real alternatives such as cash, another lender or a smaller system, explains terms clearly and respects their decision.

Red flags

Pushes the same loan again.

A prospect asks you to guarantee their power bill will go to zero. What do you say?

Situational · No guarantees

Strong answer

Says no guarantee is possible, explains the estimate depends on usage, rates, weather and net metering rules, and shows the assumptions.

Red flags

Guarantees it to close.

Walk me through how you confirm you're allowed to call or text a past solar lead before reaching out.

Technical · Checking consent

Strong answer

Checks the consent record, do-not-call and internal opt-out lists and state rules, texts only with consent and logs everything.

Red flags

Assumes past leads are fair game.

Tell me about a time you told a prospect solar wasn't the right fit for their home, such as heavy shade or a roof that needed replacing.

Behavioral · Honest fit

Strong answer

Gives a real example, explains the reason honestly and what came of it, like a referral or a later sale.

Red flags

Has never told anyone no.

Tell me about a cold solar lead that signed after something changed for them, such as a new roof or a rate increase.

Behavioral · Reviving cold deals

Strong answer

Spotted what changed for the customer, timed the approach well, and updated the proposal honestly.

Red flags

Kept calling until they gave in.

In your first week, you're told to carry rails across a steep roof, but your harness isn't clipped to anything yet. What do you do?

Situational · Staying tied off

Strong answer

Stops and asks the lead to get them clipped in before moving, even if others are moving around unclipped.

Red flags

Goes anyway so they don't look slow.

On a very hot afternoon, a coworker on the roof starts acting confused. What do you do?

Situational · Responding to heat illness

Strong answer

Tells the lead right away, helps get the coworker down safely to shade and water, and treats confusion as an emergency that may need 911.

Red flags

Tells them to take a break and keeps working.

While unloading panels from the truck, you notice one has a cracked glass corner. What do you do?

Situational · Handling damaged material

Strong answer

Sets it aside, tells the lead and makes sure it doesn't get installed.

Red flags

Stacks it with the rest.

Tell me about a time at work, school or volunteering when you looked out for other people's safety while working outside.

Behavioral · Looking out for others' safety

Strong answer

Gives specific steps, like water and shade breaks, the right gear and checking on teammates.

Red flags

Pushed past warning signs, or can't name a step they took.

Tell me about your part in a team effort at work, school or volunteering that had to finish before weather or daylight ran out.

Behavioral · Teamwork on deadlines

Strong answer

Clear about their role, how they helped others and how it turned out.

Red flags

Vague, or describes doing everything alone.

Walk me through how you'd set up an extension ladder to get onto a roof.

Technical · Ladder setup

Strong answer

Inspects it, sets firm, level footing at the angle shown on the ladder's label, extends it well above the roof edge, ties it off and keeps three points of contact.

Red flags

Leans it anywhere and climbs with arms full.

Walk me through how you install a roof attachment on a shingle roof so it won't leak.

Technical · Leak-free attachments

Strong answer

Finds the rafter per the layout, drills a pilot hole, slides flashing under the course above, seals per the manufacturer, fastens to the right depth and torque and checks for cracked shingles.

Red flags

Screws through the shingle and caulks over it.

Walk me through how you make and check PV connections between modules and to the home run.

Technical · PV connections

Strong answer

Uses only matching connectors from the same maker, crimps with the right tool, checks each is fully seated, keeps wire off the roof, and checks polarity and string voltage before landing at the inverter.

Red flags

Mixes connector brands or skips the voltage check.

On a sunny service call, you need to unplug module connectors. Walk me through what you do first.

Situational · Working on energized arrays

Strong answer

Shuts the system down per the manufacturer (rapid shutdown, inverter and disconnects off), confirms zero current with a DC clamp meter, and wears the right gear, because modules stay energized in sunlight and connectors can't safely break load.

Red flags

Pulls connectors apart under load.

The homeowner asks you to move the array to a different roof face than the plans show. What do you do?

Situational · Sticking to the approved plan

Strong answer

Explains the design and permit are approved as drawn and calls the project manager; makes no change without revised plans.

Red flags

Moves it to keep the homeowner happy.

Tell me about a time you stopped yourself from taking a shortcut on a roof, such as skipping a tie-off or a flashing step.

Behavioral · Resisting shortcuts

Strong answer

Gives a specific example and clear reasoning about the risk to themselves, the crew or the homeowner's roof.

Red flags

Can't recall one, or describes taking the shortcut as fine because nothing went wrong.

Tell me about a time you explained your work to a homeowner who was nervous about holes in their roof.

Behavioral · Reassuring homeowners

Strong answer

Explained flashing and sealing simply, showed photos and answered questions patiently.

Red flags

Told them not to worry.

Walk me through how you commission a system at the end of install day.

Technical · Commissioning

Strong answer

Checks string voltages and polarity, torque and labels, tests rapid shutdown, follows the utility's rules on turning it on before PTO, sets up monitoring and walks the homeowner through next steps.

Red flags

Flips it on and leaves.

Walk me through how you plan an install day before the crew leaves the shop.

Technical · Planning the install day

Strong answer

Reviews the plan set and survey, checks material against the pick list, confirms tools and safety gear, plans roof access and anchors, checks weather, assigns roles and calls the homeowner.

Red flags

Figures it out on arrival.

The inspector fails your job for a missing label and loose conductors under the array. How do you handle it?

Situational · Handling failed inspections

Strong answer

Fixes it promptly, documents it, books the re-inspection with the project manager and adds the misses to the crew's checklist.

Red flags

Argues with the inspector.

A newer installer keeps dropping tools and parts on the roof. What do you do?

Situational · Keeping the roof safe

Strong answer

Stops work, sets up tool tethers and buckets, keeps the area below clear and coaches the installer.

Red flags

Yells and keeps going.

Tell me about a helper you trained who learned to flash attachments and make PV connections on their own.

Behavioral · Mentoring installers

Strong answer

Gave them steps, hands-on practice with checks, feedback and growing responsibility until their work passed without rework.

Red flags

Expected them to learn by watching.

Tell me about a callback on a job you led, such as a leak or a dead string.

Behavioral · Owning callbacks

Strong answer

Names the real cause, such as a missed flashing detail or a loose connector, owns it and describes the check they added.

Red flags

Blames the homeowner or equipment.