Plentigrade phase change technology

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Storing energy as heat and releasing it when, and where, it’s needed

Sunamp thermal batteries are energy saving thermal stores containing Plentigrade: our patented high-performance phase change materials (PCMs) that deliver heating or cooling reliably, safely and efficiently.
Our breakthrough technology was created in collaboration with the University of Edinburgh, ranked among the top 20 universities in the world, and the UK’s national synchrotron particle accelerator, Diamond Light Source.

Sustained with Plentigrade

Plentigrade is the remarkable PCM inside our thermal batteries which absorbs and releases thermal energy during a melting and freezing process in a similar way to the gel in a pocket handwarmer.

Freezing releases a huge amount of energy in the form of latent heat at a constant temperature.

Plentigrade guarantees high energy output and an almost unlimited lifespan, yet its composition remains unchanged.

Stores 4x more energy than water

The unique Plentigrade formula stores thermal energy at a lower cost and higher efficiency that other battery technologies.

It stores up to four times more energy than water which means our thermal batteries are up to four times smaller than traditional hot water cylinders.

Others have tried, but no-one before has succeeded in perfecting our combination of low-cost materials, exceptional long-life, recyclability, safety and high energy density.

Sustainability

Sunamp thermal batteries are designed around ensuring a positive impact on the environment.

Unlike electrical batteries, Plentigrade does not use any hazardous or toxic materials, and does not create any end-of-life disposal issues.

Across a range of temperatures

We can change the trigger temperature when Plentigrade melts and freezes.

This means Sunamp batteries can be used for cold, ambient or hot temperature applications.

For example:

  • -30°C for refrigeration
  • 5°C for cooling such as cold chain storage
  • 58°C for domestic hot water and space heating, and
  • 118°C for high temperature >80°C hot water applications such as sterilisation.
RAL logo

Reliability

Sunamp is the only thermal battery manufacturer in the world to be awarded RAL Certification, the only global standard for Phase Change Material and PCM products.

The award confirms performance of our flagship Plentigrade P58 material with no noticeable degradation to 10,000 cycles – the equivalent of over 13 years daily use.

The mark of quality

Plentigrade, with its almost perpetual phase changing ability, is at the core of our product technology.

The “Sustained with Plentigrade” quality mark on our products is assurance of performance, efficiency, safety, and reliability.

RAL logo

Reliability

Sunamp is the only thermal battery manufacturer in the world to be awarded RAL Certification, the only global standard for Phase Change Material and PCM products.

The award confirms performance of our flagship Plentigrade P58 material with no noticeable degradation to 10,000 cycles – the equivalent of over 13 years daily use.

The mark of quality

Plentigrade, with its almost perpetual phase changing ability, is at the core of our product technology.

The “Sustained with Plentigrade” quality mark on our products is assurance of performance, efficiency, safety, and reliability.