話があちこちに飛んで申し訳ない。
カリフォルニア州の水力発電について調べてみた。
カリフォルニア州政府のウエブサイトから抜粋。
In 2007, hydroelectric power plants produced 43,625 gigawatt-hours of electricity, or 14.5 percent of the total. Hydro facilities are broken down into two categories larger than 30 megawatts capacity are called "large" hydro. Smaller than 30 MW capacity is considered "small" hydro and are totalled into the renewable energy portfolio standards. The amount of hydroelectricity produced varies each year. It is largely dependent on rainfall.
California has nearly 400 hydro plants, which are mostly located in the eastern mountain ranges and have a total dependable capacity of about 14,000 MW of capacity. The state also imports hydro-generated electricity from the Pacific Northwest.
要約すると
- 2007年度で43,625 GWhの発電量
- これは、カリフォルニア州の総発電量の14.5%に相当
- 州内に400カ所の水力発電所
- ほとんどは州東部の山岳地帯に存在（シェラネバダ山脈）
- 発電可能量は雨量に依存するが、14GW程度
下図の△が0.1MW以上の発電量を有する施設。結構一杯あるね。
