A Sunrun solar company proposal should be judged by what it promises for your home, not by the company name alone. Before choosing a plan, check whether the system design fits your roof and electricity use, which equipment is included, how payment and ownership work, and what a battery would actually power. Then test the projected savings against your utility’s billing rules and the assumptions in the quote. Sunrun’s available plans, equipment and service terms can vary by location and project, so the signed proposal and contract matter more than a general description of the company’s offerings.
Start by asking for a complete proposal that describes the system, its expected production, the payment arrangement and any included battery. You should be able to identify the main assumptions behind the design and the estimated savings. If an important figure is missing or explained only verbally, ask for it in writing before comparing offers.
A useful proposal should make it possible to answer these questions:
Do not treat an estimated bill reduction as a fixed outcome. Solar production varies with weather, shade, equipment performance and household use. Utility rates and the way your utility credits excess electricity can also affect the financial result. The proposal should explain what it assumes, rather than presenting a single savings figure without context.
System size should be based on your electricity consumption and the production potential of your roof, not simply on the largest system that can fit. Review the usage history used in the proposal. If you recently added an electric vehicle, changed heating or cooling equipment, or expect a household change, past bills may not represent future demand. Ask how those changes were handled in the design.
Check the panel layout against your actual roof. The proposal should show where the panels are expected to go and identify any constraints that affect the layout, such as shade, roof orientation or areas that cannot be used. A roof plan also lets you spot practical concerns, such as whether panels are concentrated on one section or whether the design depends on areas you expect to repair or replace.
Compare projected production with your annual use, but don’t assume that matching those totals means your utility bill will disappear. Solar panels produce electricity at different times from when a home may use it. The amount sent to the grid, the credit your utility provides for it, and charges that remain on the bill all influence the result. Ask the proposal to separate estimated solar production from estimated utility-bill savings.
For a useful comparison, have each contractor state the same basic inputs: annual household consumption, proposed system size, expected production, utility assumptions and any planned battery use. If two proposals produce very different estimates, ask what explains the gap. Differences may reflect panel placement, shading assumptions, system sizing or how the savings calculation treats utility bills.
Sunrun proposals can specify different equipment depending on the project. Read the equipment schedule for the panel and inverter types, any battery model, and the quantities included. A brand name alone does not tell you whether the equipment suits your roof or priorities. The proposal should explain how the components work together and identify any substitutions that could be made before installation.
Inverters convert the electricity produced by solar panels into electricity used in the home or sent to the grid. Ask what inverter configuration is proposed and whether the design accounts for any roof sections with different sun exposure. If a battery is included, ask whether its inverter or control equipment is part of the quoted scope, rather than assuming every related component is included.
Warranty terms need the same close reading. Separate product coverage for equipment from coverage for installation work, and find out who is responsible for arranging service if something fails. Ask whether the contract describes response procedures, monitoring, and any exclusions or customer responsibilities. Avoid relying on a broad statement such as “the system is covered” without knowing which components and work it refers to.
The payment arrangement affects who owns the equipment, what you pay over time and what happens if you sell the house. Depending on location and eligibility, a proposal may offer a purchase, loan, lease or power purchase agreement. These are not interchangeable. Compare the contract terms and total obligations, rather than choosing based on the smallest advertised monthly figure.
| Arrangement | What to establish | Potential advantage | Key limitation to review |
|---|---|---|---|
| Cash purchase | Upfront price, included work, warranties and any available incentives | You own the system after purchase | You carry the upfront cost and should confirm who handles each service issue |
| Solar loan | Loan amount, interest, fees, payment schedule and prepayment terms | May spread the purchase cost while giving you ownership, depending on the contract | Compare total repayment, not only the initial payment estimate |
| Lease | Payment schedule, any escalator, service responsibilities and transfer terms | May avoid paying the full equipment cost upfront | You may not own the system; understand obligations when selling or refinancing |
| Power purchase agreement | How the energy charge is calculated, any escalator, and how utility bills are treated | Payments may be tied to energy produced under the agreement | Read the full term, production provisions and home-sale requirements |
For a loan, compare the amount financed and the total of scheduled payments, including any fees or optional products. Find out whether a quoted payment assumes a future tax benefit or another payment that you must arrange separately. If it does, make sure you can manage the loan if that expected benefit is delayed or unavailable.
For a lease or power purchase agreement, read the payment schedule from beginning to end. Check whether payments rise over time, how production is measured if payment depends on it, and what service the provider is obligated to perform. Ask how the agreement can be transferred if you sell the home and whether a buyer would need to meet conditions or assume the contract. Get the process and any related obligations in writing.
Tax incentives and utility programs depend on current rules, location, system ownership and personal eligibility. Don’t assume an incentive applies because it appears in a sales presentation. Confirm the rules using current government or utility information and consult a qualified tax professional about your circumstances. Make sure the proposal does not count a possible incentive as guaranteed savings.
A battery can store some solar electricity for later use, but the right configuration depends on what you want it to do. If your priority is backup during an outage, ask which circuits or loads the proposed system can support, how long it may support them under different usage, and whether the design includes the equipment needed to operate during a grid outage. A battery should not be assumed to power the entire home.
If your priority is using more of your own solar electricity, ask how the battery is expected to charge and discharge and how that affects the savings estimate. The value depends partly on your utility’s rules for electricity exported to the grid and on when your household uses power. Request separate estimates with and without storage so you can see the battery’s effect on cost and projected utility charges.
Check the battery’s stated usable capacity and power output in the proposal, along with its warranty conditions and any limits on operation. Capacity describes stored energy; power output relates to how much electricity can be delivered at once. Ask the provider to connect those figures to your intended backup loads instead of relying on a generic claim that the battery provides “backup.”
Ask Sunrun to show how it calculated savings over the period used in the proposal. Look for the assumed solar production, utility rates, export credits, household consumption and system payments. If the calculation assumes electricity prices will rise, ask how the result changes under a more conservative assumption. A projection is a scenario, not a guarantee of what your bills will be.
Compare the projected utility bill and solar payment together. With some arrangements, you may receive a solar-related bill as well as a bill from your utility. You may also continue to owe fixed utility charges or pay for electricity drawn from the grid when solar production is insufficient. The relevant comparison is your expected combined energy cost against your likely costs without the system, using assumptions you can inspect.
Ask whether the estimate includes maintenance, financing charges, likely roof work, utility connection costs or other project expenses. Not every proposal handles those items in the same way. If a cost is excluded, find out whether you would pay it and whether it changes the comparison with another offer.
Take time to read the final contract rather than relying on the proposal summary. Check that promised equipment, payment terms, service responsibilities and transfer provisions appear in the documents you will sign. If a sales explanation conflicts with the written terms, ask for the documents to be corrected or clarified before proceeding.
A Sunrun plan may suit a homeowner whose roof and electricity use support a workable design, who understands the payment structure, and who values the services included in that particular contract. A purchase may appeal to someone prepared for the upfront expense and comfortable owning the equipment. A lease or power purchase agreement may be worth considering for someone who prefers a different payment structure, provided the long-term and home-sale terms are acceptable.
Consider another proposal or pause if the savings depend on assumptions you cannot verify, if the system design does not account for planned roof work, or if the contract leaves service and transfer responsibilities unclear. A second quote is especially useful when equipment, system size or projected savings differ substantially. Compare the written scope, not just the company names or headline payment.
Not necessarily. Plan availability, equipment and contract terms can depend on where the home is and the details of the project. Ask for the options available for your address and compare the actual written terms.
Not automatically. Your utility may still charge fixed fees, and you may draw electricity from the grid when the system does not meet household demand. The bill also depends on local rules for crediting electricity sent to the grid.
Compare how payments are calculated, whether they change over time, who owns the equipment, what service is included and what happens when you sell the home. The contract should explain the provider’s obligations and your responsibilities for the full term.
Consider one if its expected use fits your priorities, such as backup for selected loads or shifting solar electricity to a later time. Ask for the cost and savings estimates with and without the battery, then check the proposed capacity, output, backup configuration and warranty terms.
That depends on the agreement. Read the transfer, payoff and buyer-assumption provisions before signing, and ask for the steps involved in writing. A future buyer’s ability or willingness to take on an agreement should not be assumed.
Compare Sunrun’s offer with at least one other proposal that uses similar household usage and clearly defined equipment and project scope. More quotes can help explain a large difference, but only if the assumptions are comparable.
Before choosing the Sunrun solar company, make sure you can explain the system design, full payment arrangement, battery purpose and savings assumptions in your own words. If those details fit your roof, energy use and budget—and the contract answers your service and home-sale questions—you can make a more informed decision. If not, ask for revisions or compare another proposal before committing.
