Energy on Ashley Grealish

Windfall Energy – Ashley Grealish

Tue, 03 Nov 2026 00:00:00 +0000

Ashley talks to Raakhee about creating something he wished existed for himself and his peers, how a test-and-learn approach changed their entire product, and how he registered the company after unexpectedly being accepted into an accelerator programme.

Why Your Balcony Solar Savings Might Be Way Too Optimistic

Sun, 19 Apr 2026 19:01:01 +0100

Balcony solar is finally arriving in the UK. After years of strong adoption in Germany and across Europe, we’re starting to see these plug-and-play systems appear in British homes. It’s genuinely exciting news for anyone interested in renewable energy and lower bills.

But there’s a problem. In all the enthusiasm, the maths is starting to look rather optimistic.

The Claims Don’t Add Up

You’ve probably seen posts claiming that an 800W balcony solar kit will save you money, some might claim over £600 per year! It’s an attractive figure, but it’s based on a pretty dodgy assumption: that your panels will get 8 hours of peak sun, every single day, without fail.

Your Flat Called. It Wants a Battery.

Sat, 15 Mar 2025 00:00:00 +0000

Discussion about Windfall Energy’s plug-in home batteries for renters and flat dwellers, closing the energy equity gap.

Home Batteries: Unlocking Hidden Savings

Fri, 10 Jan 2025 00:00:00 +0000

In recent years, portable battery systems like those from EcoFlow have surged in popularity, primarily for their convenience in outdoor activities and off-grid scenarios. However, these powerful energy storage devices have untapped potential right in our homes. What if we could harness these batteries not just for emergencies or adventures, but as a smart solution to reduce our daily energy costs and carbon footprint?

The concept is straightforward: store energy when it’s abundant and cheap, then use it when demand (and prices) peak. This approach not only promises significant savings on your energy bills but also contributes to a more sustainable energy consumption pattern.

Balkonkraftwerk: Clean Energy for All Homes

Sun, 01 Dec 2024 00:00:00 +0000

Balkonkraftwerk, a German term meaning “balcony-based power generation,” has gained significant popularity in recent years. This system allows individuals to harness solar energy on their balconies and feed it back into the grid, reducing their reliance on traditional energy sources.

I recently visited Düsseldorf to understand this Balkonkraftwerk movement better. By studying its success, we can identify key factors that contributed to its growth and explore how these lessons can be applied to other countries, including the UK.

Using Technology to enable scalable off-grid Energy Access

Fri, 15 Jun 2018 00:00:00 +0100

Presentation on using IoT technology to enable scalable off-grid energy access, with a case study of BBOXX SMART Solar.