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USA: Electric Cars Better for Hawaii Environment than Trains

We are grateful to long-time member of, Alan S. Lloyd, formerly of Hawai‘ian Electric for the following input on energy issues as they relate to urban transportation.

• Hawaiian electricity load peaks in the early morning around 6:30 AM with its least requirements between midnight and 5:00 AM (see chart but note the 24-hour day).

• After midnight HECO orders H-Power and wind power producers to reduce output so that HECO can maintain the minimum output they need to keep their reheat type steam turbines running.

• Wind blows stronger overnight, when the demand for electricity is lowest, while solar energy, weather permitting, assists ONLY with the daytime load.

More information may be found at the Hawaiian Electric website.


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