ping since we spoke of this plant yesterday
http://www.utilitydive.com/news/indianapolis-power-light-to-invest-25m-in-storage-facility/399502/
The utility filed its integrated resource plan in October of last year, pointing out that “ongoing cost reductions and technology improvements ... continue to improve opportunities for battery based
energy storage systems.”
In its plan, IPL described a battery storage project and said it is in the late stages of considering options, including “up to a 20 MW BESS within Indianapolis and MISO regional transmission area which would likely be located within the IPL 138 kV grid. The immediate benefit that the BESS would provide to
customers is fast-response frequency regulation for the grid.”
IPL told the Business Journal that the grid currently sends automatic generation control signals to traditional power plants to either increase or decrease their output to keep the system in balance.
“Although this is an adequate way to provide frequency regulation, it is inferior to fast-response batteries which can instantaneously add or remove power to the grid,” the utility explained. “Although frequency regulation of a BESS project is the immediate commercial benefit to IPL customers, IPL will also explore and pilot studies on other applications.” Those could include ramping, peak shaving, and renewables integration focused on solar.
“The Harding Street plant is scheduled to be converted from a coal-fired power plant to a natural gas-fired plant by next year.
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some guy on one of your threads said this cannot happen.
They must have the mother of all power transistors!
But then, the line in is high voltage AC, the storage batteries low voltage DC, the output back to high voltage AC.
After all the conversion/heat loss, just gang a few of the power transistors used by the guys with the giant speakers in the back of the car.