Two minutes, no account, free. Your visitors run their own numbers on your page, in your colours, with the starting values of your country. You keep the visitor; we keep a small "Powered by" line.
Paste it where you want the simulator to appear. It resizes itself to its content. Works on WordPress, Webflow, Squarespace, Wix and plain HTML.
The widget stays free for any website. No tracking of your visitors beyond a count of how often the widget is shown.
Accent colour and light or dark theme follow your site. The calculation and the honest assumptions stay ours.
"Powered by Energy Simulator" stays visible in the footer of the widget. That is how the next installer finds it too.
Want the simulator on your customers' real smart-meter data, with notifications and a report, inside your own app? That is the licensed engine. Read about the licence.