Does the solar calculator widget include the 30% federal tax credit?

The 30% federal credit (IRA §25D) expired December 31, 2025, so 2026 installs get none; the widget reflects this and offers a state/utility rebate field instead. Policy changes are updated centrally for every embedded widget.

What does the solar widget cost compared to paid widget builders?

Nothing — no account, no view limit, no paid tier. Only the small attribution line below the widget must remain.

Can visitors adjust electricity price and usage in the widget?

Yes, monthly bill, rate per kWh, system size and sun hours are editable for an individual estimate.

Solar Savings Calculator Widget — Free for Your Website

Every solar visit starts with the same question: “What would I actually save?” Paid widget platforms charge monthly fees to answer it. This one is free: annual savings, payback period, a state/utility rebate field and a 25-year profit projection — running on your site, keeping your visitors away from lead-resale marketplaces.

Live preview

🔗 Embed Solar Panel Cost Calculator on your website

Add this calculator to your website for free. Copy the code below and paste it into your page:

<iframe src="https://www.clean-invoice.com/embed/en-solar" width="100%" height="800" frameborder="0" style="border:none;border-radius:12px;max-width:650px" title="Solar Panel Cost Calculator by Clean Invoice" loading="lazy"></iframe>
<p style="font-size:12px;color:#64748b;margin:6px 0 0">Free calculator by <a href="https://www.clean-invoice.com/en/calculators/solar-calculator" target="_blank" rel="nofollow noopener" style="color:#168840;font-weight:600">Clean Invoice</a></p>
<script src="https://www.clean-invoice.com/embed.js" async></script>

No signup required · Free · Responsive · Always up to date · Full guide (WordPress, Wix, Shopify) →

Suggest an improvement

Found something missing or incorrect? We appreciate your feedback — all suggestions go directly into development.

Built for

Solar installers: The prospect who just saw a 7-year payback on your site is warm. Lead-gen portals charge you $50–150 for that same person — your own calculator delivers them for free, already convinced.
Electricians expanding into PV: Show visitors you speak solar before the first call. An interactive estimate builds more trust than a certifications list.
Energy bloggers & local news sites: Solar articles with a working calculator earn longer sessions and more shares than static “average cost” posts.

Frequently asked questions

Is the 30% federal tax credit included?

The 30% Residential Clean Energy Credit (IRA §25D) expired December 31, 2025, so 2026 installs get no federal credit — and the widget already reflects that, with a state/utility rebate field visitors can fill in instead. This is exactly why central updates matter: when the policy changed, every embedded widget updated automatically, with no edits on your side.

What does the widget cost compared to Elfsight or Calconic?

Nothing, permanently. Builder platforms charge per month and often per view; this widget has no account, no view limit and no paid tier. We only ask you to keep the small “Free calculator by Clean Invoice” line under the widget.

Can visitors adjust electricity prices and usage?

Yes — monthly bill, rate per kWh, system size and location-driven sun hours are all editable, so the estimate reflects each visitor's situation instead of a national average.