Western Interconnection hourly electric power supply: 28 Dec 2025 - 3 Jan 2026
December 28 and 29 were the best days for solar energy production in the US West. Windpower produced all hours of the week. Hydroelectric produced the largest non-combustion electric supply.
“Energy Droughts” in wind and solar can last nearly a week, research shows
Energy droughts can last nearly a week. "Compound energy drought" is name for a period when the sun doesn’t shine and wind doesn’t blow.
2019 Planned U.S. Utility-Scale Variable-Renewable & Combustion Electric Power Generation Additions & Retirements
3X more GigaWatts windpower, solar-PV and natural gas generation to be added than coal, nuclear and natural gas power generation shutdowns. See why . . .
Carbon Dioxide Emissions from U.S. Electric Utilities Declined 28% from 2005 to 2017
Non-carbon electric generating power sources reached 38% of total U.S. power supply . . .
Natural Gas-Fired Powerplants to Lead U.S. Power Generating Additions: March 2018 - February 2019
Windpower and solar PV in the West, natural gas-fired turbines in the East.