Friday, June 27, 2014

Roadmap for Repowering California for all Purposes with Wind, Water, and Sunlight

A study by Mark Z. Jacobson et al. concludes that California’s power needs (electricity, transportation, heating/cooling, industry) can be met entirely by WWS technologies.

The necessary WWS (wind, water, and sunlight) technologies consist of wind turbines, concentrated solar power (CSP) plants, solar photovoltaic (PV) plants and rooftop systems, solar hot water heater systems, geothermal power plants, a few additional hydroelectric power plants, and a small amount of tidal and wave power.

Transportation will use battery electric vehicles (BEVs), hydrogen fuel cell vehicles (HFCVs), and hybrid BEV-HFCVs. The hydrogen, where needed, will be produced with electrolysis (i.e. with electricity). While using electrolytic hydrogen in transportation will generally be less efficient and more costly than using BEVs, there are some segments of transportation where hydrogen-energy storage may be preferred over battery-energy storage (e.g., ships, aircraft, long-distance freight).

High temperatures for industrial processes will be produced with electricity and hydrogen, with hydrogen again produced with electricity.

Electricity-powered air-source and ground-source heat pumps, geothermal heat pumps, and backup electric resistance heaters will be used for building heating and air conditioning. Air-source heat pump water heaters powered by electricity and solar hot water preheaters will provide hot water for buildings.

This roadmap can serve as a template for plans in other states and countries. The implementation of similar plans worldwide should essentially eliminate energy-related global warming and energy insecurity, while substantially reducing energy insecurity.

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