A newly launched tool called Helios estimates how much electricity plug-in solar panels could generate at any UK address. The forecast arrives as such panels, which require no electrician for installation, have just been legalized and are expected to go on sale soon.
The platform relies on UK government LIDAR data to map the actual skyline, accounting for buildings or hills that might block sunlight. This allows for more accurate projections than generic solar calculators. However, coverage gaps exist: most of Scotland and Wales lack LIDAR data, forcing the tool to use a less accurate synthetic horizon.
Helios also warns that trees and developments built after roughly 2022 may not appear in the data, and some address placements could be off due to geocoding via OpenStreetMap. The tool calculates both electricity production and its value against a user's tariff, providing a bottom-line estimate for potential savings.
The development comes as Britain pushes toward renewable energy adoption at the household level. Plug-in panels offer a lower barrier to entry compared to traditional rooftop installations, though their effectiveness depends heavily on local conditions.
Helios's creator is actively seeking feedback on the shading model to improve accuracy. Early adopters can test the tool now via the project's website.