World leading thermal storage technologies

Sunamp designs and manufactures space-saving thermal storage that makes UK homes, buildings and vehicles more energy-efficient and sustainable, while reducing carbon emissions and optimising renewables.

Social housing in the UK

See how to decarbonise domestic hot water in high-rise housing using our thermal batteries with heat pumps

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For installers and stockists

Plumbers, installers, stockists and specifiers, visit the Sunamp information hub to find installation instructions, technical leaflets and training sessions about our range of thermal batteries

Housing development
We’re helping developers, planners and architects incorporate our space-saving thermal batteries in renewable energy setups for housing projects
Commercial and industrial
Discover how to reduce carbon emissions from businesses of all sizes by using thermal storage to optimise renewable energy use
For homeowners
Search our list of approved stockists and installers who can fit the Thermino hot water product range in your home for you

Super-compact thermal batteries

How it works

Storing heat and releasing it on demand

Optimising renewables

Our thermal batteries support the electrification of heat.

They work with heat pumps, wind and solar, grid and microgrid electricity, waste heat, combined heat and power (CHP) and boilers.

And store 4 to 10 times more energy than conventional materials.

Sustained with Plentigrade

Sunamp’s patented Plentigrade technology stores energy in our high-performance phase change materials and releases it to give hot water, heating or cooling on demand.

Long lifespan with best-in-class reliability rating.

Wide temperature range

Plentigrade discharges at a consistent, controlled temperature.

Reliably, safely and efficiently.

This means our thermal batteries can be used to freeze (-30°C), refrigerate (5°C) or warm (58°C), and even sterilise (118°C) in many different settings.

Making homes, buildings and industry more energy efficient and sustainable

Combining low-cost materials, exceptional long-life and recyclability, our energy-dense batteries deliver a low-carbon solution for freezing, cooling, heating, steam, and hot water.

About us in the UK

Sunamp’s vision is of a world powered by affordable and renewable energy sustained by compact thermal storage. Our mission is to transform how heat is generated, stored and used to tackle climate change and safeguard our planet for future generations.

We’re a global company committed to net zero and based in the UK. We design and manufacture our thermal battery products at our headquarters near Edinburgh. Here, we have our factory, research and development labs and customer training centre.

We are an ambitious, imaginative business that’s growing fast. Recent expansion includes offices in New York and Zurich.

Trade association memberships

Contact us

We would love to talk to you about how you can use Sunamp thermal batteries to improve energy efficiency and reduce carbon emissions.

Contact us