Measuring Short-term Air Conditioner Demand Reductions for Operations and Settlement

Measuring Short-term Air Conditioner Demand Reductions for Operations and Settlement

TitleMeasuring Short-term Air Conditioner Demand Reductions for Operations and Settlement
Publication TypeReport
Year of Publication2012
AuthorsJosh L Bode, Michael J Sullivan, Joseph H Eto
Pagination120
Date Published01/2012
InstitutionLBNL
CityBerkeley
Keywordscontrollable loads, Load as a Resource, LR00-001
Abstract

Several recent demonstrations and pilots have shown that air conditioner (AC) electric loads can be controlled during the summer cooling season to provide ancillary services and improve the stability and reliability of the electricity grid. A key issue for integration of air conditioner load control into grid operations is how to accurately measure shorter-term (e.g., ten's of minutes to a couple of hours) demand reductions from AC load curtailments for operations and settlement. This report presents a framework for assessing the accuracy of shorter-term AC load control demand reduction measurements. It also compares the accuracy of various alternatives for measuring AC reductions — including methods that rely on regression analysis, load matching and control groups — using feeder data, household data and AC end-use data. A practical approach is recommended for settlement that relies on set of tables, updated annually, with pre-calculated load reduction estimates. The tables allow users to look up the demand reduction per device based on the daily maximum temperature, geographic region and hour of day and simplify the settlement process.

LBNL Report Number

LBNL-5330E