As autumn begins to settle in, we have seen a noticeable decline in production from our west-facing panels. This month was defined by a significant shift in our export strategy as we moved to the Octopus Agile Outgoing tariff, allowing us to navigate fluctuating peak rates while maintaining efficient battery management.

Solar panel performance declines over the years. I thought it might be interesting to see how mine compares. Of course weather comes into it, but hopefully this will be a useful guide.

August was a month of records. We beat our previous solar generation high by 58.4k kWh. We still made good savings while keeping the house cool during persistent heat waves. Read on to see how the battery performed and what our final costs looked like.

July was an absolute scorcher! We smashed our all-time generation records. Here is the breakdown of how we managed to produce more than we consumed during one of the hottest months on record in the UK.

June is usually our most productive month for solar. This year, we took a deep dive into the data to see how our system handled varying weather conditions—from heatwaves to rain. We’ve broken down every kWh to show you exactly how our smart energy management performed during this period.

We've had some changes with the arrival of our electric car, making this month one of our most efficient yet! Our solar generation covered almost 100% of house usage, proving that smart planning and new tariffs pay off.

April was a massive month for solar! We hit 91% self-sufficiency and saw record generation, proving that strategic battery management can make a huge difference to your bills.

March started with promise but faced some cloudy days. We look at our generation figures, battery performance, and how the changing weather impacted our grid usage and costs.

A very wet and overcast month led to our lowest February generation figures in recent memory. Despite some bright days, our panels struggled under the gloom, resulting in zero self-sustained days this period. Read on for our full breakdown of battery usage and cost savings.

January brought the lowest solar generation since installation, with cold weather driving higher heat pump usage. Our battery and Cosy tariff strategy kept costs down, while solar, grid, and exports combined for a full picture of household energy usage.

December marked the end of a record solar year. Generation was lower than previous months, but battery management and the Cosy tariff kept costs down. Hopefully this overview is a useful guide to winter performance.

November saw solar generation decline as winter approached. Battery management and the Cosy tariff helped reduce costs despite low sunlight, with some days costing as little as £2.08. Hopefully this overview is a useful guide to winter performance.

The statistics for our SolarPV and battery system for the month of September 2025

The statistics for our SolarPV and battery system for the month of September 2025

The statistics for our SolarPV and battery system for the month of August 2025

The statistics for our SolarPV and battery system for the month of July 2025

The statistics for our SolarPV and battery system for the month of June 2025

The statistics for our SolarPV and battery system for the month of May 2025

The statistics for our SolarPV and battery system for the month of April 2025

The statistics for our SolarPV and battery system for the month of March 2025