Considerable power market design changes along with a tremendous amount of incremental transmission capacity will be needed to facilitate a US power system with very high penetrations of renewable energy, experts and executives said Dec 9. US Environmental Protection Agency data says the power generation sector is the second largest source of greenhouse gas emissions behind vehicles and the country has been seeing an increasing number of states set net-zero or 100% carbon-free electricity system targets, Gary Rackliffe, vice president of market development and innovation for Hitachi ABB Power Grids, said during a panel discussion at the gridConnext Virtual 2020 Conference.
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