Battery Storage Cornwall.
Store the power you generate and use it when you need it. NAPIT certified battery storage for homes and businesses, fitted by our own St Austell-based team.
Residential batteries also qualify for 0% VAT until 31 March 2027: see full details
Get more from the power you generate.
Add to Existing Solar, or Start Fresh
Battery storage is one of the simplest ways to get more value out of a solar PV system, or to protect your home or business from rising grid prices even without solar. Instead of exporting surplus energy back to the grid for a fraction of its value, a battery lets you store it and use it later, in the evening, overnight, or during a power cut with the right setup.
Sized to You, Not a Package
We install battery storage as a standalone upgrade to existing solar systems, or as part of a new installation designed from scratch. Sizing the battery correctly matters: too small and you won't capture enough surplus energy, too large and you're paying for capacity you'll never use. We size every system around your actual household or business usage, not a generic package.
For Businesses
For businesses, battery storage does more than store surplus solar: a correctly sized system can shift usage away from expensive peak-rate periods and reduce demand charges, cutting energy costs directly. Larger commercial and industrial sites often need a three-phase battery system, which we design, supply and install as part of the same project alongside your existing electrical supply.
Fully Certified Installation
Every battery installation is carried out by our own NAPIT certified team, fully compliant with current wiring regulations and safety standards. We handle the electrical integration with your existing consumer unit and solar inverter, and talk you through smart features like time-of-use charging, where the battery charges from the grid overnight on cheaper tariffs.
How It Connects
Every battery needs an inverter to make its stored power usable in your home. If you're adding a battery to your existing solar system, we check whether your current inverter can handle it, or pair the battery with a hybrid inverter that manages both solar and storage together. New installs are designed as one complete system from the start. Either way, we handle the technical side, you just get the power when you need it.
Whether you're adding storage to an existing solar array or starting fresh, at home or for your business, get in touch for a free, no-obligation quote and we'll talk through the right size and setup for your property.
How It Works.
Straightforward, start to finish.
Survey
We assess your home or business, your energy use, and your existing solar setup if you have one.
Design & Fit
We size the right system for your needs and install it cleanly, with minimal disruption.
Start Saving
Your battery starts storing and releasing power automatically, on your terms.
Sized to your usage, not a package.
Solar Battery Add-On
Add storage to an existing solar system to capture more of the power you already generate.
Evening & Overnight Use
Store daytime generation or cheap overnight tariff power to use when you need it most.
Correctly Sized Systems
Battery capacity matched to your actual household or business usage, not a generic package.
Reduce Peak Demand
Shift business usage away from expensive peak-rate periods to control energy costs.
Three-Phase Systems
Larger commercial and industrial battery installations designed and installed in-house.
NAPIT Certified Install
Fully compliant electrical integration with your consumer unit and solar inverter.
Quality kit, fitted properly.
We install leading brands including:
Common Questions
Yes. Battery storage works well as an add-on to an existing solar setup, or as part of a new installation from scratch.
Modern battery systems are built for long-term daily use, with manufacturer warranties typically covering many years. We'll talk you through the specifics for your chosen system during your survey.
Not necessarily. Solar-only installs are common and typically save £4,000 to £5,000 compared to adding a battery. We'll help you decide what's right for your usage during your free survey.
Some systems support backup power during an outage, others don't. We'll check this is right for your setup as part of your free survey.
I cannot recommend Holloway Electrical highly enough. From the planning of our solar and battery installations through to the final commissioning Jamie's took care of everything. Organised other trades to assist, explained everything that was going on and completed the job on time as promised to an exceptional standard, I could not be happier.
We experienced a very friendly and helpful service from Jamie with our new kitchen electrics. We would highly recommend his services.
We are so pleased with the work that Jamie completed for us today, supplying power to our apartment garage and installing sockets and EV charger. The quality of the work is outstanding. I highly recommend Holloway Electrical Ltd, definitely our electrical professional for all future requirements!
Hi Jamie, Kieran did a great job and we are both very pleased with it. Thank you very much. I would like to discuss with you the electrical box in the kitchen which will need to be replaced. PEH
A lovely local company to deal with. Efficient and left everything clean and tidy. Highly recommend.
Great communication, excellent service, great price, 100% recommend.
We had several quotes from Electricians to install our EV charger which varied dramatically. Jamie’s quote was by far the most reasonable and he was the only one who bothered to come to our home and look at the charger etc. before taking on the job. He arrived on the agreed date of installation and was personable, efficient and tidy. I would have no hesitation in recommending Jamie and would be happy to call on his services again in the future.
Jamie provided us with a personable, friendly and efficient service when installing our new EV charger. I would have no hesitation in recommending him.
I cannot recommend Holloway Electrical highly enough. From the planning of our solar and battery installations through to the final commissioning Jamie's took care of everything. Organised other trades to assist, explained everything that was going on and completed the job on time as promised to an exceptional standard, I could not be happier.
We experienced a very friendly and helpful service from Jamie with our new kitchen electrics. We would highly recommend his services.
We are so pleased with the work that Jamie completed for us today, supplying power to our apartment garage and installing sockets and EV charger. The quality of the work is outstanding. I highly recommend Holloway Electrical Ltd, definitely our electrical professional for all future requirements!
Hi Jamie, Kieran did a great job and we are both very pleased with it. Thank you very much. I would like to discuss with you the electrical box in the kitchen which will need to be replaced. PEH
A lovely local company to deal with. Efficient and left everything clean and tidy. Highly recommend.
Great communication, excellent service, great price, 100% recommend.
We had several quotes from Electricians to install our EV charger which varied dramatically. Jamie’s quote was by far the most reasonable and he was the only one who bothered to come to our home and look at the charger etc. before taking on the job. He arrived on the agreed date of installation and was personable, efficient and tidy. I would have no hesitation in recommending Jamie and would be happy to call on his services again in the future.
Jamie provided us with a personable, friendly and efficient service when installing our new EV charger. I would have no hesitation in recommending him.
Get your free battery storage quote.
No obligation. We'll call you within 24 hours.
Serving homes and businesses across Cornwall.
Based in St Austell, we install throughout the following towns and the surrounding villages.
