18 Apr '11, 4pm

Ionex Has a 1 MW Battery Ready for the Grid: "Utility energy storage is here today," according to Dan Vogler,

The 2c/kWh ($20/MWh) per day is probably pessimistic for this type of battery. The price difference between day/night rates can be higher, and the battery can be used more than once per day. Note the system described above has either an hour or half-hour of storage, so is more suited to “Ancillary Services” aka grid stabilization. For ancillary services it is possible to be paid to absorb energy as well as supply it, so revenue can be earned charging and discharging, and there could be several cycles per day. An interesting analysis is in Gary Morris’ thesis “Energy Storage in Deregulated Market Structures” (google it URL too long). He analyzes the economics with data from the CAISO and ERCOT electric market exchanges, and as a sample shows how $80/MWh/day (8c/kWh-capacity) can be generated. There is a detailed analysis of return on investment for various scenarios and cap...

Full article: http://www.greentechmedia.com/articles/read/ionex-has-a-1...

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