My UK energy provider says my electricity is produced with 100% renewables, so I presume water, wind, solar. So why am I affected by such big increases in electricity charges (price per kWh)?
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Supply and demand still factor into renewable energy sources.
With wind and solar your supply is dictated by uncontrollable factors, so price will fluctuate with supply, unlike thermal and hydro where power generation has a igher degree of control, and thus less price fluctuations. Another important factor is energy storage, where a large capacity for storage can smooth out price fluctuations and absorb excess production (although adding costs of its own to the equation), a small storage capacity can result in sudden price increases if prodoction needs aren’t always met.
Demand is simple, how much power is everyone trying to use.
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