Wind Integration and DR PNDRP Dec. 5, 2008 Ken Corum

What’s the Problem with Wind? Wind requires increased “ancillary services” What are ancillary services? Spinning reserve Non-spinning reserve Regulation Load following Black start Voltage Control 2

What are “Regulation” and “Load Following?” 3

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LF - Reg - 5

Regulation Needed every hour of year Quick, automatic response Must go both ways (“reg up” and “reg down”) Wind doesn’t increase need for reg much 6

Load Following Scheduled w/in hour Reduces regulation requirements* Must go up and down Needed every day if not every hour Wind increases requirements *If reg is cheap and abundant enough, LF not needed 7

So What Kind of DR Might Work? Available nearly all the time Up and down Possibilities Water heating, w/ smart grid tech Pumping Some electrochemical processes Ice storage for HVAC ? 8

Conclusions Wind integration (i.e. ancillary services) offer a new way for DR to be useful Not all (maybe not much) DR will qualify Frequent dispatch Up and down 9