Tesla Certified Powerwall Installers UK

Take control of your energy costs with Tesla Powerwall

Name: EPC Improvements Ltd
Address: 15-17 Russell Way, Chelmsford, Essex, CM1 3AA, GB
Telephone: 01245 408792

Power your home from £7,450, or £72.30/mo with a 25% deposit

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Tesla Powerwall 3 Cost UK

From £7,450 Fully Installed

Store excess solar energy, reduce grid reliance, and take control of your home's energy usage with Tesla Powerwall 3.

13.5kWh energy storage capacity
Up to 11.04kW power output
Built-in solar inverter
AC and DC coupling compatibility
Real-time monitoring via the Tesla app
Backed by a 10-year Tesla warranty

Dimensions: 609mm (w) x 1099mm (h) x 193mm (d)

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Tesla Powerwall 3.

With the Tesla Powerwall 3 households nationwide now have access to this cutting-edge battery storage solution. At EPC, we pride ourselves on being pioneers in the renewable energy industry.

These systems store surplus energy generated by solar panels for use at a later time. The excess energy can charge electric vehicles and offer backup power during outages. Additionally, Powerwall users can take advantage of innovative energy tariffs. For example, you can trade electricity with the grid for savings on your electricity bill. The Powerwall 3 will be compatible with the government's Smart Export Guarantee (SEG).

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Tesla Powerwall 3: What's New?

Now with built in Solar Inverter.

The Tesla Powerwall 3 introduces several brand innovative features. The most notable is the integrated solar inverter. This allows for direct DC coupling with solar panels, enhancing the system's efficiency.

When you connect solar panels to the Powerwall 3, the battery stores the electricity they generate. It's then converted to AC power when it's required in the home. This direct feed reduces the number of conversions required. Thereby improving the storage efficiency from 90% to an impressive 97.5%. Homeowners can then use more of the energy they generate, increasing energy independence.

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Tesla Powerwall 3: Key Features

Built-in Solar Inverter: Efficiently converts excess solar energy into stored electricity. This maximises the capture and utilisation of solar power.
Easy System Expansion: Designed for scalability, allowing for the stacking of up to 4 units as your energy needs grow. Additionally, up to 3 DC expansion packs can be added to each Powerwall 3 at any time.
Excellent Value: Comes with a comprehensive 10-year warranty that includes unlimited cycles. Ensures 80% energy retention after 10 years and supports 100% depth of discharge. Plus, EPC offers low installation costs.
Active Thermal Management: Features a redesigned active thermal management system to enhance overall performance and efficiency.

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The Benefits of a Tesla Powerwall 3 Stack Up

Be more energy self-sufficient

Store energy from your provider at a lower rate

Sell energy to your provider at a higher export rate

Powercut protection with optional backup

Not sure what is right for you?

At EPC, we make battery storage and solar panels accessible for every homeowner. We steer clear of pushy sales tactics, offering reliable solutions to suit you. We help connect our customers with packages to meet their needs. Below are options available to you.

Store Energy from a Solar system or Charge from the Grid

Upgrade your current solar panel system, or be smart with your energy tariff by charging your Tesla Powerwall from the grid.

Opt for a Tesla Powerwall Battery Only package to complement your solar panels. It will also work as a standalone system to enhance your home's energy management.

This solution stores excess energy in your Tesla Powerwall to power your home when you need it most. This ensures that you don't just save money, but also contribute to a sustainable future.

Our Tesla Powerwall battery storage solutions offer flexibility, durability, and superior performance. So, whether you're looking to avoid peak tariffs or to have a backup power supply, it's an ideal solution.

Let us help you take control of your energy usage with a system that's smart, scalable, and secure.

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Common questions

Do I need solar panels to benefit from Powerwall?

No. Powerwall delivers strong savings on its own by charging from the grid on low overnight rates and discharging during expensive peak hours. Adding solar increases the benefit further by also storing free daytime generation. EPC can install both together as a complete system.

Which tariffs work best with Powerwall?

Octopus Go and Octopus Intelligent are currently the most popular for consistent home battery savings. Octopus Agile can deliver lower effective rates with more flexibility. EPC will recommend the right option for your usage and configure your system accordingly.

What certifications does EPC hold?

EPC holds MCS certification, Tesla Powerwall certification and Trustmark registration. These are the credentials that matter for a battery installation and we hold all of them on every job we complete.

Is finance available?

Yes. EPC offers flexible finance including 0% options, meaning for many households the monthly saving covers the repayment and the installation is cash-flow positive from month one.

Will it keep my home powered through a blackout?

Yes. Powerwall if installed with a gateway detects grid outages and switches to battery power in under 20ms, fast enough that most appliances will not notice the transition. Your home keeps running on stored energy with no action needed from you.

How much could I realistically save?

Savings depend on your usage, tariff and whether you have solar. Households combining a low-rate overnight tariff with Powerwall typically see £600 to £1,200 per year. EPC will give you a realistic figure for your specific home, not a headline estimate.

Customer Case Studies

Our case studies showcase our customer stories from the very beginning of their EPC journey, through to completion and the first few months following installation. Read how our Heat Pumps have revolutionised UK homes.

Seamless In-Roof Solar System Installed on a New Build in Chelmsford
Daniel approached us to retrospectively install solar panels on his new build home. We designed, supplied and installed a 14 Panel solar system to satisfy his eco needs. Using state of the art solar panels, and SolarEdge Inverter and Optimiser technology.
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Heat pump Installed on 9 bedroom home in Norwich
Bernard bites the bullet and upgrades and future-proofs his home by installing a state of the art Stiebel Eltron WPL 25 AS Air Source Heat Pump.
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Luxury New Build in Fryerning, Future-Ready Design
Luxury home builder Ardan Developments engaged us to integrate renewable energy solutions into a super high-specification new build for their client, including an air source heat pump for heating and hot water, underfloor heating throughout, and mechanical ventilation with heat recovery to ensure a fresh, healthy indoor environment.
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Underfloor Heating for a renovation in a Chelmsford home
As part of this Chelmsford renovation, we’re installing a modern underfloor heating system powered by an air source heat pump. The result is even, low-temperature warmth throughout the home, improved energy efficiency, and reduced running costs. Discreet, comfortable, and designed for long-term performance, this system is a smart upgrade for modern living.
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Underfloor Heating for a Basildon Renovation & Extension
Underfloor heating installed throughout a renovation and extension project in Basildon using a low-profile overlay board system. Designed to work within existing floor heights, the system delivers efficient, even heat across old and new spaces without major structural disruption.
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Underfloor Heating for a Large Oxford Self-Build
A fully bespoke underfloor heating system designed and installed for a large new-build home in Oxford. Engineered across concrete and overlay floor constructions, the low-temperature system delivers consistent comfort, high efficiency, and seamless performance throughout the property.
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