850+ tools, US and Canada
Know your solar numbers before you sign anything.
These are independent calculators for sizing, savings, storage, and incentives. Built from the same data installers use. No sales call required.
Start here
The five calculators everyone runs first
Every category, one taxonomy
Sixteen hubs, 850 tools
Every calculator on this site lives in one of these hubs. Pick the one that matches where you are right now.
Why AskSolarEnergy
Built to check quotes against
No lead forms
Every tool runs in your browser. You don't need a phone number to see a number.
Sourced figures
Rebate and net metering numbers trace back to DSIRE, NREL, and NRCan program pages.
State level detail
Net metering and rebate tools are built per state and province. We didn't average them into one national number.
The typical path
A solar decision, in five stops
Stop 1
Size the system
Start from your monthly bill or square footage. Get a panel count you can trust.
Stop 2
Check the incentives
Run the federal ITC and your state or provincial rebate estimator together.
Stop 3
Compare financing
Cash, loan, lease, and PPA side by side, using your own rate assumptions.
Stop 4
Decide on storage
Size a battery against your actual critical loads and outage history.
Stop 5
Project the payback
Put it together into a 25 year savings and payback timeline.
101+ terms, defined plainly
The glossary
Questions
Frequently asked
Yes. Every tool runs in your browser. No signup, no email gate, no sales call.
Mostly the DSIRE database and NREL's net metering tracker for the US, and NRCan plus provincial program pages for Canada.
No. There's nothing to submit. Calculations happen locally and nothing gets sent to a sales network.
No. These tools give you a solid estimate so you can evaluate quotes. A licensed installer should confirm final numbers for your roof and site.
Illustrative scenarios
How people use these tools
A few common ways to work these calculators into your own decision. Not customer reviews, just typical paths.
Run the payback period calculator first, then bring your own number into the conversation with an installer. It gives you a baseline to check their estimate against.
Look up your own state or province in the net metering and rebate tools before trusting a verbal estimate. Program rules and credit rates change, and a quote based on old figures can be off by a lot.
Use your actual outage history and critical loads, not a generic rule of thumb, to size a battery bank. It's common to land on a smaller, cheaper system than a standard recommendation.
Run your first number in under a minute.
No account. No installer call. Just your roof, your bill, and the math.