BlackJack3D/E+ via Getty Images The transition from fossil fuel to renewables for power generation is gathering pace, and a key part of that transition is managing intermittency of solar and wind power. There are a number of ways that this is being addressed. Firstly, power use can be time shifted (e.g., running air conditioners when the sun shines to have a cool house in the evening) or demand managed (e.g., having your grid supplier control the timing of your pool pump). Secondly, the sun always shines, a ...