3 miles from our base

Battery Storage Installation in St Austell

Battery storage specialists just 3 miles from St Austell. Store solar energy and slash your bills.

Gas Safe Registered

MCS Certified

5.0/5 (14 reviews)

200+ Installations

Battery Storage for St Austell Homes

St Austell has one of the highest solar penetration rates in Cornwall — driven partly by the high proportion of south-facing roofs on the town's Victorian bungalows and terraces, and partly by early adoption rates in the Charlestown and Carlyon Bay premium areas. Many of those solar installations, now 5–10 years old, are ready for battery storage. And every new solar installation we carry out here is battery-ready from day one.

Adding battery to an existing solar system

If you have solar panels already, a battery upgrade is typically a half-day installation. We connect AC-coupled storage to your existing inverter and consumer unit — no changes to your solar panels or roof work required. A GivEnergy 9.5kWh or Fox Pro 10kWh pushes your self-consumption rate from 35–45% (typical for solar-only) to 70–85%. At current St Austell electricity prices, the saving from that shift is £450–£700 per year for a typical 3-bed house.

The Carlyon Bay and Charlestown premium market

Executive homes in Carlyon Bay and Charlestown have large south-facing roofs, high energy consumption, and the financial resources for premium battery systems. The Tesla Powerwall 3 (13.5kWh, integrated inverter) is our most common installation in these areas — clean aesthetics, strong smart-home integration, and Octopus tariff compatibility. Combined with a 10–16kWp solar system, these properties frequently achieve full self-sufficiency from April through September.

The heat pump multiplier

For St Austell homes running a heat pump alongside solar, battery storage is particularly valuable. The heat pump draws 2–5kW for heating runs — storing solar during the day and dispatching it to the heat pump in the evening and overnight eliminates most peak-rate grid electricity use. We model this combined effect at the survey stage. Get a free combined solar and battery assessment.

Areas covered: Serving St Austell town centre, Mount Charles, Bethel, Carlyon Bay, Charlestown, Duporth, and surrounding villages • Postcodes: PL25, PL26

22,500

Population

1298

kWh/m²/year solar

45%

Off gas grid

3 miles

From our base

Key local industries

China clay & mineralsRetail & servicesTourism (Eden Project)Construction & property

Battery storage in nearby areas

Solar panels St Austell EV chargers St Austell Heat pumps St Austell

What We Offer

Our Services in St Austell

Solar Panels

MCS certified solar PV installation for homes and businesses. Generate your own electricity, cut bills by up to 70%, and...

Battery Storage

Store excess solar energy and use it when you need it most. We install Foxstar, Tesla Powerwall, and SIG Energy battery ...

Boilers

Gas Safe registered boiler installation, replacement, and servicing. We fit Worcester Bosch, Vaillant, and Viessmann boi...

Underfloor Heating

Wet underfloor heating systems for new builds, extensions, and renovations. Provides warm, even heat throughout your hom...

EV Chargers

Home and commercial EV charger installation. We fit all major brands including Zappi, Ohme, and Easee with smart chargin...

Hot Water

Supply and installation of hot water cylinders including Mixergy smart cylinders and Megaflo unvented systems. Solar div...

Battery storage works best alongside these services in St Austell:

Solar panels in St Austell EV charger in St Austell Boiler installation in St Austell

Our Process

How It Works

Step 1

Free Survey

We visit your St Austell property to assess your needs, measure heat loss, and discuss the best options.

Step 2

Design & Quote

We design a bespoke system, identify all eligible grants including the £7,500 BUS scheme, and provide a transparent fixed-price quote.

Step 3

Installation

Our MCS certified engineers install your system cleanly and efficiently, typically within 2–4 days, with minimal disruption to your home.

Step 4

Aftercare

Full system handover, MCS certification, warranty registration, BUS grant application completion, and ongoing support when you need it.

Book Your Free Survey No obligation · Free survey · MCS certified

Other Areas We Serve Near St Austell

St Austell St Austell St Austell

Customer Reviews

What Our Customers Say

Google

"CCS installed our air source heat pump and the whole process was brilliant from start to finish. They handled the BUS grant application, and our heating bills have dropped significantly. The house is warmer than it ever was with our old oil boiler."

James & Sarah T.

St Austell

Air Source

Google

"Added a Foxstar battery to our existing solar panels. CCS fitted it in a single day and now we use almost all of our solar generation ourselves. The app monitoring is fantastic too — I can see exactly where every unit goes."

Catherine W.

Lostwithiel

Battery Storage

Read all reviews

Our Work

Recent Projects Near St Austell

Case studies from our team working across mid-Cornwall.

£7,500 Boiler Upgrade Scheme

10 kW Daikin Heat Pump in a Victorian Terrace, St Austell

St Austell • 4-bedroom Victorian stone terrace

Underfloor Heating Retrofit in Kitchen Extension, St Austell

St Austell • 3-bedroom semi-detached with new

View all case studies

Common Questions

Frequently Asked Questions About Battery Storage in St Austell

Is a battery worth it with solar panels?

A battery significantly increases the value of your solar panels. Without a battery, you typically use only 30–50% of the solar energy you generate — the rest is exported to the grid at 15–25p/kWh. With a battery, self-consumption rises to 70–90%, meaning you use your own free solar energy instead of paying 24.67p/kWh from the grid. A 9.5kWh battery system costs £4,500–£7,000 installed (at 0% VAT). In Cornwall, battery storage typically pays back in 5–7 years.

How long do home batteries last?

Modern lithium iron phosphate (LiFePO4) home batteries — including Foxstar and Tesla Powerwall — are warranted for 10 years and designed to last 15+ years. LiFePO4 chemistry is the safest, most stable battery chemistry available, with no thermal runaway risk and excellent long-term capacity retention.

Can I add a battery to my existing solar panels?

Yes, batteries can be retrofitted to any existing solar PV system. We install AC-coupled battery systems (such as the Foxstar or Tesla Powerwall) alongside your current inverter, compatible with any solar system regardless of age. A retrofit typically takes 1 day and we handle all DNO notifications. The 0% VAT rate applies to battery storage installed alongside solar.

Can a battery provide backup power during a power cut?

Yes — some home batteries including the Tesla Powerwall and certain Foxstar configurations provide backup power during a grid outage, automatically switching to battery power when the grid fails. This is a particularly useful feature for rural properties in Cornwall where power cuts can occur. Not all batteries include backup as standard, so we advise on this when recommending a system.

What is the best battery to buy with solar panels?

Foxstar and Tesla Powerwall are our most frequently installed systems. Foxstar offers excellent value, strong UK customer support, and modular capacity. Tesla Powerwall has a sleeker design, excellent software, and strong backup power features. The right choice depends on your budget, whether backup power matters to you, and whether you want to expand capacity in future. We install both and provide impartial advice.

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