DeepResource

Observing the world of renewable energy and sustainable living

MERITS Seasonal Heat Storage Breakthrough

Everybody prefers to talk about wind and PV-solar when it comes to renewable energy. The reality is that electricity is only a relatively small part of the energy consumption of private households. Take the Netherlands:

[clo.nl] – Energieverbruik door huishoudens, 1990-2013

Natural gas: 3/4 (space heating, cooking, bath)
Electricity: 1/4 (lights, TV, fridge, freezer, router, etc)

In other words: the greater challenge is to replace fossil fuel for heating purposes with renewable sources. Two major renewable sources for heating are
1) thermal solar
2) geothermal

The problem with thermal solar is the mismatch between supply and demand. You need heat in the Winter but the sun shines mostly in the Summer. Apparently a major breakthrough has been achieved in storing large amounts of solar heat in molten salts.

[merits.eu] – Developing a compact rechargable heat battery
[merits.eu] – Merits in slides
[wikipedia.org] – Thermal energy storage

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