Designed & manufactured in Britain

British energy storage.
Built properly.

Designed, manufactured and installed by Energy2 engineers. Premium battery systems for homes and businesses — with the longest warranty in the industry.

Design Your System Our Story
17kWh1
Per Module
15 yrs
Warranty
48hrs
Installed
30+
Years Experience
Energy2 battery storage system
Solutions

One company. Every scale.

From a single home battery to hundreds of kilowatt-hours of commercial storage. Designed, built and supported end-to-end.

🏠

Home Battery Systems

Cut your electricity bill by up to 65%.2 Our 17kWh1 modules are the highest capacity domestic battery module manufactured in Britain.

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🏢

Commercial & Industrial

Rack-mounted storage from 16kWh to 1MWh3. Built in Britain, in stock, and ready to deploy into schools, developments and commercial sites.

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Engineered in Britain

We saw what others were building.
It wasn't good enough.

So we took control. We design the enclosure, the integration, the software, the monitoring — and we manufacture and assemble it all in Britain.

⚡

Highest Density

17kWh1 per module. The highest capacity domestic battery module manufactured in Britain.

🔧

Serviceable, Not Sealed

Repairable infrastructure. Components isolated and replaced, not the whole unit.

🛡️

6,000+ Cycle Life

Rated for 6,000+ full cycles. LFP chemistry. Built for decades.

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End to End

Design. Build. Install. Support.
One company.

We design the technology, manufacture the hardware, install the systems and support them for the life of the product. No importers. No middlemen. No mystery supply chain.

Typical Imported System
Designed
In-house, in Britain
Overseas
Manufactured
In-house, in Britain
Overseas factory
Installed by
Our engineers
Third-party contractor
Supported by
Direct from the engineers who built it
Service contractor
Lead time
Weeks
3–4 months
Accountability
One company
5–6 different companies
Data
UK data centres, cell-level telemetry
Overseas cloud, pack-level only
Warranty
15 years
5–10 years
The Result

Realise the benefits
you've been promised.

💷

Save Money

Cut your electricity bill by up to 65%.2

🔒

Energy Security

Full off-grid capability. When the grid goes down, your power stays on. Genuine energy independence.

🌱

Lower Carbon

Off-peak energy is up to 50% less carbon intensive. Pair with solar and heat pumps to go further.

British Sovereign Data

Your data stays
in Britain.

Cell-level telemetry. Encrypted UK infrastructure. Every cell in every battery monitored, optimised and protected — from UK data centres, not overseas cloud platforms.

Energy2 Typical Systems
Visibility See every cell See the battery as a single unit
Data location UK data centres Overseas cloud platforms
Serviceability Repairable infrastructure Replaceable appliance
Updates Continuous OTA improvements Fixed at manufacture
Accountability Single engineering organisation Multiple suppliers
Energy2 charge and discharge monitoring dashboard
Explore the Platform
Three Decades

You can't buy this experience.

30+ years of energy engineering. We don't just sell batteries — we do full system design, end-to-end consultancy, estate management, and ongoing monitoring and support. Nothing in this country comes close.

30+
Years Experience
15yr
Warranty
48hr
Installation
100%
British

Ready to take control of your energy?

Design your system in minutes. No obligation. No pressure.
Just honest advice from the engineers who build them.

Design Your System Call 0800 112 6345
Made in Britain MCS Certified RECC Member IAA Member TrustMark

Important information

Important Note: The energy performance and benefits of EESS is impossible to predict with certainty due to the numerous functions a system can be programmed to perform.

You should not sign a contract based on specific energy prices. Tariffs vary between suppliers and can change, so these costs can go up or down.

  1. 1 See Black 17 datasheet ↩
  2. 2 Based on Ofgem's high-usage benchmark of 3,800kWh a year and the price cap for October–December 2026 (26.32p/kWh, 54.83p/day), against 100Green Tide Smart at 7.43p/kWh midnight to 7am, quoted for HP27 0SH in September 2026. Allows for 90% round-trip efficiency. Tide Smart is a variable tariff and rates vary by region. Your saving depends on your usage and tariff. ↩
  3. 3 See White 16 datasheet ↩