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Posts tagged “CAES”

By Robert Rapier on Jul 16, 2007 with no responses

Storing Renewable Energy

First, thanks to all who provided input for the renewable diesel essay. The comments were useful, and will help me to strengthen the chapter. Second, I had said that today I would comment on Benjamin Cole’s Seamless Transition to a Post-Fossil Economy. Frankly, I think other readers adequately addressed this, and even Benjamin realizes that a seamless transition is unlikely. So I will leave that one as is. One of my major interests is storage systems for renewable energy options that would be characterized as intermittent. Solar and wind would fall into this category, and their intermittency really limits their ultimate potential. If wind turbines must be backed up by coal-fired power plants, it lessens the benefit. Therefore, the development… Continue»

By Robert Rapier on May 14, 2006 with 5 responses

Compressed Air Energy Storage

I have always been a big fan of wind power. But one of the knocks on wind is that it is intermittent. Since electrical demand probably won’t match up very well with wind fluctuations, installed wind capacity does not displace conventional power generation in a 1 to 1 ratio. For example, I have seen it claimed that 2,000 megawatts of installed wind energy still requires 1,800 megawatts of standby power for when the wind isn’t blowing. (1) Clearly a storage system is needed. During times of high wind flow and low demand, the excess energy could be stored in something akin to a giant battery. When the wind isn’t blowing, users would pull from the “battery”. I have given a… Continue»