this post was submitted on 13 Jun 2023
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Technology
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The thing is that efficency doesn't matter too much if this energy used is from intermittent sources like wind or solar and if there is too much energy at this moment and not everything can be used. So it is better to safe energy at lower efficiency than not saving anything at all.
Yes and no.
Better store than loose energy.
But the choice isn't between heat storage+conversion and no storage. It's between differents type of storage (heat, chemical, gravity, electrolysis, freewheel), with multiple technology and chemistry to choose from for each type.
Since there's many options to choose from, it make sense to compare overall efficiency and cost.