Grid Storage

This Chart Shows How California Is Massively Extending Solar Use Into The Evening

As solar energy became a larger and larger portion of California electricity generation, there were rising concerns about the infamous “duck curve.” Solar energy was starting to dominate midday electricity generation, forcing curtailments even, while peak electricity demand in the evening was a tad too late for solar to be … [continued]

Utilities: Batteries Are Most Commonly Used for Arbitrage & Grid Stability

Electricity utilities increasingly report using batteries to move electricity from periods of low prices to periods of high prices, a strategy known as arbitrage, according to new detailed information we recently published. At the end of 2023, electricity utilities in the United States reported operating 575 batteries with a collective capacity of … [continued]

ChatGPT and DALL-E generated image of one of the deeply stupid gravity energy storage nonsense ideas.

Gravity Storage 101, Or Why Pumped Hydro Is The Only Remotely Real Gravity Storage

In my recent article celebrating the great month that pumped hydro had, between the Loch Ness Red John facility selling to Statkraft, the UK finally settling on cap and floor for the technology and China having 365 GW of power and 4 to 8 TWh of energy storage under construction, … [continued]

Image from Volkswagen AG Rights.

Elli Enters the Industrial Energy Storage Business

Stationary large-scale storage systems are an important component in tomorrow’s energy system. The demand for storage solutions will increase throughout Europe in the coming years, with experts expecting growth by a factor of 100 in Germany alone. Elli will develop and operate energy storage projects on an industrial scale together … [continued]