Quick answers
Open a question. Read the answer right here.
Will solar eliminate my utility bill?
Do not assume it will. Ask for a model showing electricity purchases, export credits, fixed charges and the proposed solar or financing payment. Seasonal use and your utility’s rules matter. Compare the complete household energy cost rather than treating panel production as the same thing as bill savings.
Will my panels work when the grid is down?
Ordinary grid-connected solar generally does not provide usable home backup by itself. Ask whether the design includes equipment that supports safe operation during an outage and which circuits it powers. Get a realistic duration estimate tied to loads, stored energy, weather and operating settings.
Do I need a battery?
It depends on the goal, tariff and household use. Ask for a solar-only comparison and a solar-plus-storage comparison where both are feasible. Separate the value of backup from projected bill savings. A battery can be useful without automatically being the least expensive route to your specific objective.
See all 7 questions
Can the quote assume a tax credit?
Treat any credit as conditional until its availability and your eligibility are verified for the project and relevant dates. Ask for the full price before incentives. A contractor’s calculation is not tax advice, and a projected benefit is not necessarily cash you will receive when an invoice is due.
What should I check if buying a home with solar?
Request ownership and financing agreements, payment obligations, transfer requirements, equipment age, warranties and production history. Ask who must approve a transfer. Your real estate, title and lending teams may need the documents early. Do not rely on the phrase paid solar without verifying what obligations remain.
Is a bigger system always better?
No. Ask how capacity relates to current use, future plans, roof conditions and utility rules. Compare the additional cost with the expected benefit of extra production. The design needs to fit the household rather than maximize equipment on the roof without a clear reason.
Repair, expand or start over?
Existing solar deserves its own assessment.
An underperforming system
Ask for diagnosis of the actual issue before replacing the array. Request an explanation of monitoring errors, shading, component failure or other identified causes. Compare expected restored production with the cost and warranty of the repair. A newer product does not by itself establish that the existing system should be discarded.
Adding a battery
Ask whether the existing equipment is compatible, what additional controls are needed and how the upgrade affects utility arrangements. Clarify backup circuits and installation location. A battery addition should have its own scope and operating explanation. Do not assume the specifications advertised for a new complete system apply unchanged to your existing installation.
Replacing the roof
Coordinate the roofer and solar provider before work begins. Get removal, storage, reinstallation, testing and damage responsibility in writing. Check the solar agreement if equipment is leased or otherwise third-party owned. A roof quote that omits panel work cannot be compared directly with one that includes the entire coordinated project.
Explore this guide
Start with what matters.
- Gather a year of electricity use and confirm the utility and rate plan.
- List the appliances you want powered during an outage, if backup is a goal.
- Have roof condition, electrical needs and contract ownership reviewed before signing.
Solar is easier to evaluate when the conversation starts with your goals. Are you trying to reduce a bill, prepare for outages, add an electric vehicle or replace aging equipment? Those are different projects, even when they involve some of the same products.
Gather the household’s actual energy use and ask for a design that explains its assumptions. This guide helps you compare that design, the contract and the total cost. We do not install solar or guarantee savings, incentive eligibility or uninterrupted power.
01 / Solar & Energy
Decide what success would look like
Give the installer a specific problem to solve.
A lower bill
Bring the usage history, not only the dollar amount from one month. Ask which charges the proposal expects to reduce and which may remain. Have the installer model the actual utility tariff and your timing of use. A promised percentage means little without knowing the starting assumptions and the costs excluded from the estimate.
Power during an outage
List essential loads such as refrigeration, communications and necessary household equipment. Ask what can run together, for how long and under what weather assumptions. Solar panels alone do not generally provide ordinary outage backup. The design needs suitable equipment and controls, with a clear explanation of which circuits remain powered.
An upcoming change
Tell the designer about an electric vehicle, heat pump, pool equipment or an added living space. Ask for separate scenarios for current and future use instead of accepting a larger system without explanation. Future plans should be explicit assumptions that you can revise, not a sales argument that every household needs maximum capacity.
02 / Solar & Energy
Understand the pieces of the system
Ask what each component contributes to your goal.
Panels and inverters
Request the panel and inverter models, layout and estimated annual production. Ask how shade, orientation and available roof area were assessed. The proposal should identify what monitoring you receive and what alerts mean. Compare expected production using the same assumptions, since panel count alone does not describe the performance of the whole installation.
Battery storage
Compare usable stored energy with power output and the supported loads. Ask about reserve settings, outage behavior and how the battery operates during normal utility service. A battery designed mainly to shift energy use may have different settings from one held ready for outages. Have the installer explain that tradeoff in household terms.
Efficiency and electrical work
Consider whether lower energy use or an equipment upgrade belongs in the plan before adding more generation. Request separate prices for electrical panel changes, load controls and EV charging. These items may support the project, but they are not interchangeable with solar production. Ask which work is required and which is optional.
03 / Solar & Energy
Keep the system understandable after installation
The handoff matters as much as the sales presentation.
At project completion
Request the approved design, permits, inspection information, utility authorization where required, warranties and emergency shutdown instructions. Confirm that you can access monitoring under your own account. Ask for a demonstration of normal operation and backup behavior. Keep installer support contacts separate from the financing company’s number so the next question reaches the right place.
A regular review
Check monitoring and utility bills for a change from your normal pattern. Record when an alert began and whether the app or internet connection also changed. Share screenshots without account credentials. Do not climb onto the roof, open electrical enclosures or disconnect equipment to investigate a production issue yourself.
When the home changes
Before roofing work, a battery addition or a sale, gather the contract and equipment records. Ask the relevant provider how the change affects warranties, utility permissions and ownership obligations. Keep service history with the home’s other major systems. A documented installation is easier to evaluate than an app login with no supporting paperwork.
04 / Solar & Energy
Repair, expand or start over?
Existing solar deserves its own assessment.
An underperforming system
Ask for diagnosis of the actual issue before replacing the array. Request an explanation of monitoring errors, shading, component failure or other identified causes. Compare expected restored production with the cost and warranty of the repair. A newer product does not by itself establish that the existing system should be discarded.
Adding a battery
Ask whether the existing equipment is compatible, what additional controls are needed and how the upgrade affects utility arrangements. Clarify backup circuits and installation location. A battery addition should have its own scope and operating explanation. Do not assume the specifications advertised for a new complete system apply unchanged to your existing installation.
Replacing the roof
Coordinate the roofer and solar provider before work begins. Get removal, storage, reinstallation, testing and damage responsibility in writing. Check the solar agreement if equipment is leased or otherwise third-party owned. A roof quote that omits panel work cannot be compared directly with one that includes the entire coordinated project.
05 / Solar & Energy
Make the proposal’s math visible
Compare costs before conditional incentives and future savings.
Cash, loan, lease and power agreement
Ask who owns the equipment and who is responsible for maintenance. Compare cash price with the total financed cost, fees and payment schedule. For a lease or power purchase agreement, review escalation, transfer, buyout and end-of-term terms. A low starting payment does not explain the long-term commitment.
Utility and incentive assumptions
Have the proposal name the current tariff, export-credit assumptions and any expected remaining utility charges. Verify incentives with the responsible program and tax questions with your tax professional before relying on them. This guide does not assume a particular credit remains available. Keep projected savings and eligibility separate from the contractual price.
Installation scope and exclusions
Compare roof work, trenching, panel upgrades, permits, monitoring, battery controls and utility application responsibilities. Ask what can trigger a change order and when you can approve it. Have the provider identify any work by another contractor. Use one scope checklist for every bidder so exclusions do not disappear inside an attractive monthly figure.
06 / Solar & Energy
Use the rules and conditions for your address
Nearby homes can have different energy economics.
Confirm your utility first
Roseville-area and Sacramento-area addresses do not all use the same electric utility or tariff. Start with the provider shown on your bill. Ask that provider about current interconnection, export compensation and application requirements. Do not accept a neighboring household’s savings as a forecast for yours, even when the roof and panel count look similar.
Roof, shade and seasonal conditions
Have the site review consider trees, roof condition and seasonal production rather than a single sunny-day demonstration. In foothill or mountain locations, ask about site access, weather and any special design requirements. Ask which assumptions are modeled and which were confirmed during a physical inspection before accepting the final layout.
Keep the decision manageable
Write three priorities and one budget limit before meeting installers. Request a plain-language summary showing what the recommended system does, what it does not do and what you will owe. Our Home Ownership contact page is available for organizing the questions. Technical design, permitting and service must be confirmed with qualified providers.
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Your solar & energy preparation checklist.
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Questions worth asking.
Will solar eliminate my utility bill?
Do not assume it will. Ask for a model showing electricity purchases, export credits, fixed charges and the proposed solar or financing payment. Seasonal use and your utility’s rules matter. Compare the complete household energy cost rather than treating panel production as the same thing as bill savings.
Will my panels work when the grid is down?
Ordinary grid-connected solar generally does not provide usable home backup by itself. Ask whether the design includes equipment that supports safe operation during an outage and which circuits it powers. Get a realistic duration estimate tied to loads, stored energy, weather and operating settings.
Do I need a battery?
It depends on the goal, tariff and household use. Ask for a solar-only comparison and a solar-plus-storage comparison where both are feasible. Separate the value of backup from projected bill savings. A battery can be useful without automatically being the least expensive route to your specific objective.
Can the quote assume a tax credit?
Treat any credit as conditional until its availability and your eligibility are verified for the project and relevant dates. Ask for the full price before incentives. A contractor’s calculation is not tax advice, and a projected benefit is not necessarily cash you will receive when an invoice is due.
What should I check if buying a home with solar?
Request ownership and financing agreements, payment obligations, transfer requirements, equipment age, warranties and production history. Ask who must approve a transfer. Your real estate, title and lending teams may need the documents early. Do not rely on the phrase paid solar without verifying what obligations remain.
Is a bigger system always better?
No. Ask how capacity relates to current use, future plans, roof conditions and utility rules. Compare the additional cost with the expected benefit of extra production. The design needs to fit the household rather than maximize equipment on the roof without a clear reason.
Keep learning.
Sources for this guide
Published September 19, 2026. These educational sources support the guidance on this page.