To the editor : This article starts by saying that hydrogen is a source of energy ( “The energy source that could survive Trump’s attack on California’s green ambitions,” Aug. 1). This is false. Hydrogen stores electrical energy produced elsewhere (at a solar or wind farm). The round-trip efficiency of green hydrogen energy is currently about 30%-50% , compared with the 80%-90% efficiency of battery storage.

We do not find out until the 11th paragraph that it is energy- and water-intensive. In the 14th paragraph, we learn that this facility will electrolyze water with machines powered by clean energy (rather than the more common process of methane steam reformation). That makes it green if the electricity is renewable.

The Los Angeles Times has published many articles abou

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