7-day solar generation forecast for the UK
Estimate how much electricity your solar panels could generate over the next seven days. Start with your UK postcode and your best-ever solar day.
Use the forecast
Start with your postcode and best-ever solar day. Add system size, roof direction, pitch and annual generation if you know them. Local cloud and shading can still move the result, so treat it as a planning estimate rather than a promise.
What can move the result
Plan the rest of your solar setup
Still deciding whether to install panels? Check a specific property with our UK solar roof calculator, or start with a quicker solar panel cost and payback estimate. If you already export surplus electricity, the solar battery calculator models how much of it a battery could move into household use.
Frequently asked questions
How does the solar generation forecast work?
The forecast combines expected sunlight for your postcode area with the best daily generation you have seen from your own system.
Is the forecast guaranteed?
No. It is an estimate. Local cloud, shading, snow, dirt, inverter clipping and panel direction can all make actual generation differ from the forecast, especially further into the seven-day period.
Why do you ask for my best solar day?
It provides a low-friction measurement of how your complete system performs, including its panels, inverter and installation. You can usually find the highest daily generation in your inverter or energy app.
Do you store my postcode?
No. It is used to find approximate coordinates for the forecast and is not saved by Energy Review or added to the page address.
Does the forecast cover Northern Ireland?
Not in this first version. It covers England, Scotland and Wales because Northern Ireland postcode data has separate commercial licensing requirements.
Can I get a solar forecast using only my postcode?
Yes. A postcode and your best-ever daily generation are enough for the first result. Your system size, roof direction, pitch and annual generation are optional refinements.
