Solar Savings Calculator
Clean energy. Real savings.
Straight numbers on home solar, batteries, and your power bill. Run your own payback in two minutes, then read the briefing behind every number.
- Lower your electric bill
- Power your home when it matters
- Charge smarter. Drive cleaner.
Or jump straight to a topic below. Every briefing runs the real numbers.
Start with the question you came with.
No sales pitch. Just the math, worked out in plain language.
The real price per watt, why there is no federal residential credit left to subtract, and how to read a quote.
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When storage pays back, when it does not, and how your utility rules decide it.
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The break-even math, the variables that swing it, and the honest 25-year net.
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The guides most readers open first, before they run their own numbers.
Getting StartedSolar Panel Installation: How to Go Solar (7 Steps)
Solar panel installation, end to end: how to go solar in seven steps, from roof fit check to install day and utility turn-on, and the numbers to run yourself.
Read the briefing →CostHow Much Do Solar Panels Cost in 2026?
This briefing prices home solar at roughly $2.50 to $3.50 per watt installed, with no federal residential credit left to subtract, plus the payback math.
Read the briefing →BatteriesAre Solar Batteries Worth It? The Payback Math
Are solar batteries worth it? It depends on your utility's rules. This briefing runs the honest math: cost, net metering, payback, backup value, and sizing.
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BatteriesTesla Powerwall 3 Cost: Price and Installation
Tesla Powerwall cost, priced honestly: the illustrative hardware price, the fully installed total, the installation slice on its own, and what moves it.
Read the briefing →PaybackSolar Panel Payback Period: When Do They Pay Off?
Break-even math on home solar with no federal credit left: a typical payback now lands near 10 to 15 years. See the formula, the variables, the 25-year net.
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SizingHow Many Solar Panels Do You Need for a House?
This briefing turns your kilowatt-hours, your sun hours, and your roof into a real panel count: the sizing formula worked in full, roof-fit limits, and one example.
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Getting StartedHow to Read a Solar Quote (7 Steps)
This field guide shows how to read a solar proposal in seven steps: system size, price per watt, production, payment terms, and red flags before you sign.
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Every briefing, filed by the question it answers.
Latest briefings
Every guide runs the real numbers. Newest first.
Newest briefingSolar Shingles Cost: Solar Roof vs Panels
This cost breakdown prices a solar shingle roof against panels plus a new roof, applies no federal credit to any figure, and shows what the premium buys.
CostGround Mount Solar Cost vs a Roof System
This cost breakdown prices a ground mount against a roof system, from racking and concrete to the trench, and shows what better tilt and access really repay.
Owning & MaintainingHow to Test Solar Panel Output (6 Steps)
This walkthrough tests solar panel output in six steps, from reading the module label to measuring voltage and current safely and knowing when to call a pro.
CostIs There a Solar Tax Credit in 2026? What Changed
This briefing covers what happened to the federal solar tax credit, why a 2026 installation cannot claim it, and how to find the incentives that do remain.
BasicsHow Do Solar Panels Work? Sunlight to Outlet
This explainer traces how solar panels work end to end: sunlight into silicon, cells into modules, DC into AC, and the meter that decides what you keep.
CostSolar Attic Fan Cost and Payback
This breakdown prices solar attic fans by mounting type, sizes one against attic volume and air changes, and shows why your intake vents decide the payback.
CostSolar Pool Heating Cost: Is It Worth It?
This cost breakdown prices solar pool heating against gas and heat pump heaters, sizes the collector to your pool, and runs payback on the fuel you displace.
BasicsWhat Are SRECs? Selling Solar Credits
This explainer covers what SRECs are, how a state renewable standard mints the certificate, why it sells apart from your power, and what the income is worth.
FinancingSolar Loans Explained: Terms and Traps
This breakdown shows how a solar loan is really priced: the dealer fee buried in the cash price, the payment that re-amortizes, and how to compare total cost.
We do the boring math so a salesperson can't do it for you
Solar quotes are designed to be confusing. WattBarn exists to make them legible: what a system should cost, what it should save, and how long payback really takes in your state.
- How we research. Every guide starts from primary data: real installer bids readers forward us, state-level electricity rates from the EIA, and manufacturer spec sheets. When we quote a price or a payback period, it traces back to a source, not a vibe. We are not owned by an installer and we do not sell leads to one.
- How we make money. Some links to equipment or quote services are affiliate links, meaning we may earn a commission at no extra cost to you. It never changes which products we recommend or the numbers in our calculator. If a popular product is a bad buy, we say so.
Every number on the site is illustrative. No figure anywhere on WattBarn applies a federal residential tax credit: the Residential Clean Energy Credit under IRC section 25D was terminated by Public Law 119-21 and is not available for any property placed in service after December 31, 2025, with the test being when the original installation was completed rather than when it was ordered, contracted or paid for. State and utility programs vary by location, so take those to your own utility or state energy office and your own tax position to a qualified tax professional.
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