Solar panels themselves are a brilliant investment for your home and the planet. But did you know that over 22,000 home battery storage systems were installed in the UK between April 2024 and March 2025? That means more UK homeowners are pairing their solar panels with battery storage than ever before.
Solar-plus-storage is fast becoming the new normal, and demand is on the rise. The Microgeneration Certification Scheme (MCS) reported a 176% increase in battery installations in January 2025 compared to January 2024, making early 2025 a record-breaking period for solar-plus-storage installations.
So why is battery storage taking off, and should a Tesla Powerwall 3 be on your radar?
Stay in charge of your own electricity
Solar panels work at their best when the sun is shining, but what about when it’s dark in the evening – the main time we’re all at home?
A battery stores excess solar energy, giving you power when the sun goes down and, even better, during power outages. So when you pair your solar panels with a Tesla Powerwall 3, you’ve got reliable, whole-home backup, putting you in charge of your own electricity.
Make upfront and long-term savings
With energy prices still high and rising, batteries make serious financial sense. Over 22,000 domestic battery setups last year are due, in part, to the 0% VAT on domestic batteries, an initiative introduced in February 2024, making them around 20% cheaper to install.
Plus, batteries help you double down on your savings, allowing you to use your free solar energy at night, avoid pricey peak-rate electricity and sell surplus back to the grid with the Smart Export Guarantee (SEG).
Some homeowners report cutting their energy bills by up to 75% with a solar-plus-storage setup.
Be smart about your setup
The Tesla Powerwall 3 is more than just a battery. It learns your energy usage patterns, charges during off-peak hours and shifts solar energy to when you need it most. It even integrates seamlessly with Tesla EV chargers for efficient electric vehicle charging.
But it’s not just about convenience. Battery storage is becoming increasingly vital to reducing the grid’s peak demand and supporting renewables. Grid operators are using domestic batteries to help balance supply and demand during busy periods.
Why the Tesla Powerwall 3?
As a Powerwall Certified Installer, SWH can help you unlock the full potential of your solar array. Powerwall 3 offers:
- 13.5 kWh storage capacity per unit
- 11.5 kW continuous backup – enough for full-house coverage
- 97.5% solar-to-grid efficiency via integrated inverter
- Indoor/outdoor installation, 10-year warranty and regular software updates
- Scalable system – add up to four units depending on your needs
Who is the Tesla Powerwall 3 for?
- Homeowners with solar panels – maximise the return on your installation with stored energy
- Night-time energy users – charge at low rates and use stored power during evening peaks
- People wanting blackout protection – the Powerwall keeps your home running when the grid goes down
- Electric vehicle (EV) owners – pair it with a home charger for smart, sustainable vehicle charging
Why switch to solar-plus-storage now?
- Numbers are soaring, with more than 22,000 systems installed last year
- Cost-effective timing, with 0% VAT on domestic batteries until at least March 2027
- Rising energy prices. With caps creeping up, battery storage gives you long-term protection
Ready to store your sunshine?
As a Powerwall Certified Installer, SWH can guide you every step of the way, from system design to installation and maintenance. We’ll help you choose the right Powerwall setup and demonstrate the savings and resilience it will bring to your home.
Contact us to make your home energy-smart and future-proof today.
