**New** Talk to us about home batteries – great if your home isn’t ready for solar!

Glowb launches solar and battery optimisation app to game-change the shift to renewables.

 

Solar startup Glowb has partnered with Zoa Technologies to launch an AI-powered app that solves one of the renewable energy sector’s biggest pain points, helping homeowners optimise their battery storage and make the most of new, agile energy tariffs. The app will slash bills, help balance the grid, and drive solar and battery adoption in more UK homes.

Last year, Glowb raised £1.8M from four funds and seven angels in an 80% oversubscribed pre-seed funding round. The company has since embarked on its mission to become the most trusted solar brand in the sector, making home decarbonisation simple and straightforward with a fully comprehensive service, including in-house installation,  financing and software.

Glowb was co-founded in 2022 by Sarah Chapman, who previously founded and sold Brazilian commercial solar company Faro Energy. She began her career in clean tech strategy at McKinsey & Co, working in carbon markets and on international climate policy. Her co-founder is Colin Fraser, CEO of the UK banking operations of FCMB Group. 

Glowb’s app is powered by AI technology from Zoa – the software platform for home energy management – and marks Zoa’s first UK partnership with a solar company. Together they are solving one of the sector’s most urgent problems: the absence of smart, manufacturer-agnostic technology to help consumers maximise the potential of their renewable energy systems and unlock savings. 

Until now, customers have had to charge and discharge their home batteries manually to take full advantage of variable energy prices – a time consuming process involving lots of guess work.

Glowb’s app uses AI to tell the battery to charge when energy prices are low and discharge when they’re at their highest, intuitively and automatically making decisions every five minutes, based on variables like energy price fluctuations, the weather, and what it has learnt about a customer’s home usage patterns. The Glowb app is free and now available to all Glowb customers, across iOS, Android and web. It will be rolled out to all solar adopters in summer 2024.

The state of the market

The market size of the UK solar panel installation industry measured by revenue, was £1.2BN in 2023, up 35% on the previous year and average annual growth between 2018 and 2023 was 15.1%1. MCS, the industry’s accreditation body, reported that 2023 was a record-breaking year for small-scale renewable certified installations2. It estimates that around 1.3M UK homes (4.1%) have solar panels installed.

But the domestic battery market trails behind the solar market as the majority of panels were installed before batteries made economic sense. However, with prices falling and quality increasing, this market is now growing rapidly: 95% of Glowb’s new solar installations now include batteries, while 10% of their installations are now battery-only.

Meanwhile, the experience of making the transition to solar in the UK is often highly inconsistent in terms of customer service and quality. The market is also hampered by a lack of smart, joined-up technology, pervasive mis-selling, limited finance options – all problems that Glowb solves.

Portrait of sarah chapman founder of GlowbSarah Chapman, CEO and co-founder of Glowb, comments: “Our new app is a game-changer: it makes home batteries make sense for existing solar households and new ones alike. This technology will drive the growth of a whole new home battery market.  

“As energy prices have risen, we’ve seen the cost of solar panels fall by 39% and batteries by 50% since January 2022, while the quality of components continues to improve. It’s now possible to get a tariff that varies every 30 minutes depending on what’s actually happening in the energy market and, meanwhile, solar is still zero rated for VAT. But to take full advantage of this opportunity, consumers need home batteries and they need to be properly optimised. 

“Our partnership with Zoa brings AI battery optimisation to the party, plugging a genuine problem no one has yet solved. Bill payers can now make the most of new agile tariffs and play the market to their financial gain which will incentivise more people to consider solar, unleash the market’s true potential, and give existing users a better all-round experience too. 

“There’s a clear overlap between Zoa’s approach and ours. We both agree things need to be designed brilliantly to get people to change behaviours, and that slick customer experiences help create new habits. This app delivers an experience that will drive mass adoption and utility.”

Glowb solves sector wide pain point

Sara Brooks, co-CEO of Zoa, comments: “Our partnership with Glowb is set to revolutionise home energy management. The biggest limitations to scaling electrification across households today is accessibility – making electrification affordable and easy to adopt. With Glowb’s flexible payment options and Zoa’s intelligent technology, the experience of managing an electrified home is easy and simple. 

“Thanks to our collaboration, Glowb is now able to fully utilise each solar panel and battery system to maximise consumer savings. Our AI-driven technology enables real-time, intelligent decision-making that adjusts battery usage based on solar predictions, energy consumption, and tariff costs. This approach not only boosts savings but also helps Glowb build stronger customer relationships by delivering more value to their users. We are proud to support Glowb in our shared mission to accelerate the adoption of electrification.”

Check Warner, co-founding partner at Ada Ventures (lead investor in Glowb), comments: “Glowb is now offering its customers something genuinely new to the market, that will deliver material consumer savings and transform people’s relationship with their home energy. This technology will accelerate consumer adoption of solar and batteries, position Glowb as a market leader, and deliver significant benefit to the grid.”

**ENDS

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  • What your neighbours** are saying about us

    **ok fine, they may not live on your road, but they’re useful testimonials regardless!

    5/5

    “Glowb have been great and we are delighted with the finished product. The whole team (all the trades people) have been super helpful and friendly. They have also built a plan and design to suit our house which most solar companies won’t do. We are delighted with the end product”.

    Jeremy, London

    5/5

    “An amazing solar installation company. We were absolutely delighted by our whole experience with Glowb. We had received a number of other quotations from other suppliers but Glowb stood out. We are now producing an enormous amount of energy and pretty much self-sufficient most of the time. The whole system seems to be working even better than we had hoped. We would highly recommend anybody considering a solar installation to contact Glowb”.

    Clive, Staffordshire

    5/5

    “Glowb designed a solution for our home and usage that seemed more carefully thought out than other companies we got quotes from. The team were friendly and courteous and kept us in the loop, and we always felt that the guys on-site and those back at base were all determined to deliver the best outcome. It wasn’t the simplest installation, but everybody’s attitude, professionalism and expertise made it as stress-free for us as it could possibly have been”.

    Joel, Bedfordshire

    5/5

    “Glowb have been great and we are delighted with the finished product. The whole team (all the trades people) have been super helpful and friendly. They have also built a plan and design to suit our house which most solar companies won’t do. We are delighted with the end product”.

    5/5

    “An amazing solar installation company. We were absolutely delighted by our whole experience with Glowb. We had received a number of other quotations from other suppliers but Glowb stood out. We are now producing an enormous amount of energy and pretty much self-sufficient most of the time. The whole system seems to be working even better than we had hoped. We would highly recommend anybody considering a solar installation to contact Glowb”.

    5/5

    “Glowb designed a solution for our home and usage that seemed more carefully thought out than other companies we got quotes from. The team were friendly and courteous and kept us in the loop, and we always felt that the guys on-site and those back at base were all determined to deliver the best outcome. It wasn’t the simplest installation, but everybody’s attitude, professionalism and expertise made it as stress-free for us as it could possibly have been”.

    Jeremy, London

    Clive, Staffordshire

    Joel, Bedfordshire