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NARUC Summer Meeting. ENERGY RESOURCES & ENVIRONMENT COMMITTEE Marriott Marquis New York City July 16, 2007. Off-Peak Cooling with Thermal Energy Storage (TES) .

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NARUC Summer Meeting

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Naruc summer meeting

NARUC Summer Meeting



Marriott Marquis

New York City

July 16, 2007

Off-Peak Cooling with Thermal Energy Storage (TES)

Naruc summer meeting

Off-Peak Cooling with Thermal Energy Storage (TES):An energy efficient technology to reduce peak electricity demand, operating costs, and NOx & CO2 emissions.

  • Moderator:The Hon. Clifton C. Below,New Hampshire Public Utilities Commission

    • Mark MacCracken,CEO, CALMAC Mfg. Corp.

    • Greg Tropsa, President, ICE-Energy, Inc.

    • Chris Smith, Peak Load Reduction Program Manager, NYSERDA (NY State Energy Research & Development Authority)

Naruc summer meeting

Summer Peak is growing faster than Winter or Load

CB p. 1

Iso ne summer peak load factors history 1980 2006 forecast 2007 2016

Load Factors (asset utilization rates) are declining

ISO-NE Summer Peak Load FactorsHistory 1980-2006, Forecast 2007-2016




From ISO-NE, 2007 CELT (Capacity, Energy, Loads and Transmission) and RSP (Regional System Plan) Forecast

CB p. 2

Naruc summer meeting

A large portion of peak demand (summer A/C driven) is for relatively few hours

CB p. 3

Naruc summer meeting

Generation capacity to meet summer peaks is run (and paid for) for few hours

CB p. 4

Naruc summer meeting

Even on the hottest and highest peak days, demand (and prices) drop at night

Record Peak

CB p. 5

Nox emissions and high electricity demand days hedd

Daily temperature

NOx Emissions and High Electricity Demand Days (HEDD)

High electricity demand days the environmental opportunity

High Electricity Demand Days:The Environmental Opportunity

  • Seasonal or annual NOx trading control programs do not address the problem

  • Demand for electricity is increasing and the increase in the peak is growing faster than the base:

    • PJM Interconnection: consumer peak demand for electricity will rise ~ 1.6% annually over the next decade.

    • NE ISO: peak demand will rise ~2.4% annually.

    • NYISO: relies heavily on many combustion turbines to maintain NYC grid.

      →Reductions of NOx on peak days will provide significant ozone reduction benefit

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