This page has moved...
GE_ancillary_services_pilot.pdf
Abstract—This paper summarizes the results from a
PG&E pilot designed to assess the ability to use air
conditioner direct load control to provide ancillary
services. The study included nearly 2,000 residential
households, with control devices that were instructed to
cause an immediate and complete shutdown of the air
conditioner compressor 71 times over a two and half
month period. It summarizes the start and total ramp time
of AC load response, the magnitude of the response, the
effect of the curtailments on customers comfort and
satisfaction, and the approach to providing near real time
visibility of the air conditioner electricity demand. [1]
The number of direct load control participants was increased
on each of the selected feeders to ensure that approximately
500 SmartAC customers were present. Two technologies with
the capability of shutting down the air conditioner compressor
remotely were used: load control switches and programmable
communicating thermostats. For each feeder, the goal was to
include 400 AC units with direct load control switches and
about 100 AC units with programmable communicating
thermostats. Table 1 summarizes the number of participants in
each feeder for the pilot.