Solar Savings Calculator for Solar Installers

Try it yourself

This is a real, working CalcForms calculator, right here on the page. Enter your details and watch the estimate update on the spot. It is exactly what your customers would use, and every submission lands in your dashboard as a lead.

forms.badabingapp.cc/solar-savings-calculator

What it calculates

System size sized from the monthly bill and local sun hours
First-year savings, payback period, and 25-year net savings
Federal tax credit and local incentives applied from your tables
Utility rate escalator compounded over the system life
Homeowner lead with bill and projected savings drops into your dashboard

Why it closes more deals

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A live number closes deals

Customers who see a real estimate the second they enter their details are far likelier to book than ones told to call for a quote. The number is the hook.

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Runs your most complex spreadsheet

Multi-tab workbooks, lookup tables, tiered rates, conditional line items, the lot. If the math runs in Excel, CalcForms runs it behind a clean form.

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Update it by chatting

Prices move. Ask ChatGPT to change a rate, add an option, or insert a step and the live form updates in seconds. No developer, no redeploy.

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Backtest before you publish

Run your last 20 real jobs through it and tune the formula until the live estimate matches what you actually charge. Ship it once it lines up.

Why calculator forms convert — by the numbers

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47.3% vs 2.8%

In an analysis of 50,000+ forms, interactive forms averaged a 47.3% conversion rate versus 2.8% for static forms. (Outgrow)

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2× conversions

Interactive content generates roughly twice as many conversions as static content. (Content Marketing Institute)

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51% of buyers

51% of B2B software buyers now begin their research in an AI chatbot rather than a search engine. (G2, 2026)

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1 in 3

A third of B2B buyers have chosen a vendor they had never heard of before, on an AI assistant's recommendation. (G2, 2026)

How this form was built

No template builder and no code. One message to ChatGPT with CalcForms added:

✦ ChatGPT with CalcForms

Build a solar savings calculator. Inputs: average monthly electric bill, roof direction (south 1.0x, east/west 0.85x, north 0.6x production), shading (none 1.0x, some 0.85x, heavy 0.65x), roof type, and ownership. Size the system from the bill at $0.16/kWh and 4.5 sun hours, apply the production multipliers, apply the 30% federal tax credit, escalate the utility rate 3% a year, and show the homeowner first-year savings, payback in years, and 25-year net savings. Keep my install cost per watt and margin internal.

Done. I built Solar Savings Calculator with your pricing and deployed it to forms.badabingapp.cc. The math runs server-side and every submission is saved with the inputs and email. Want to add a field or change a rate? Just tell me.

Build this exact form

CalcForms is an app you add to ChatGPT once. After that you build and edit forms just by chatting. Works in Claude too.

Add CalcForms to ChatGPT. Open the CalcForms app page, click Add, and sign in with your email. One time, about 60 seconds. A free ChatGPT account works. (Using Claude? Setup here.)
Say the words below. ChatGPT builds the form with your math inside and gives you a link.
Share it, then change it by asking. Send the link to customers. Change a rate or add a question later just by asking.

Step-by-step: turn your spreadsheet into a form, add your price list, show customers one number. All guides →

Say this to ChatGPT

"Build a solar savings calculator. Inputs: average monthly electric bill, roof direction (south 1.0x, east/west 0.85x, north 0.6x production), shading (none 1.0x, some 0.85x, heavy 0.65x), roof type, and ownership. Size the system from the bill at $0.16/kWh and 4.5 sun hours, apply the production multipliers, apply the 30% federal tax credit, escalate the utility rate 3% a year, and show the homeowner first-year savings, payback in years, and 25-year net savings. Keep my install cost per watt and margin internal."

Example run: A $220/month bill on a south-facing unshaded roof sizes near a 7.5 kW system, about $1,900 first-year savings, roughly 8-year payback, and about $52,000 net over 25 years.

How does it work? CalcForms is an official ChatGPT app. Once it is added, ChatGPT can build, publish and update real calculator forms for you, all from the chat window. Your customers never need ChatGPT; they just open a link.

What it works out

Savings from your bill
Payback period
Tax credit and incentives
Cash, loan, or lease

FAQ

Does it apply the federal tax credit and local incentives?

Yes. The 30% federal credit and any local rebates live in your model and apply automatically. Update them by asking ChatGPT when programs change.

Can it show a loan option, not just cash?

Yes. Add ownership as an input and the form calculates the monthly loan payment against the new lower utility bill.

Does the homeowner see my cost per watt?

No. They see savings, payback, and the 25-year number. Your install cost per watt and margin stay internal, chosen per field.

Can I validate it against deals I have closed?

Yes. Backtest it against past installs by entering their bills and confirming the projected savings line up with what those systems actually produced.

Build yours in the next 10 minutes.

Your first form is free. No credit card.

Add to ChatGPT, free →