May 13, 2022
  • May 13, 2022

NYISO receives electricity generator takedown notices to comply with ‘spike rule’

By on April 6, 2022 0
Strong points

156.2 MW of withdrawals posted on April 6

Forecasting rules to reduce reliability margins

The New York independent system operator has received notices of removal of power generators, with a capacity of 156.2 MW issued on April 6, as power plant owners strive to comply with the ” New York City’s spike rule designed to shut down units with high greenhouse gas emissions. .

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The rule, enforced by the New York State Department of Environmental Conservation, is officially known as Subpart 227-3, Ozone Season Oxides of Nitrogen Emission Limits for Simple Cycle and Regenerative Combustion Turbines. .

The regulations tighten emissions standards for simple-cycle combustion turbines during the summer ozone season, impacting peak power generation capacity around New York City. Power plant owners must comply with rules that will be phased in by May 1, 2023 and 2025.

Owners of 648.3MW of peak power generation capacity in and around New York have elected to retire natural gas and oil-fired units to comply with stricter air emissions regulations, while that about 1,300 MW will be retrofitted with pollution control equipment, according to a review of compliance plans.

Notice of deactivation

The NYISO posted three completed generator deactivation notices on its website on April 6.

Nassau Energy, a wholly-owned subsidiary of ENGIE North America, has submitted a withdrawal notice for its 55 MW TRIGEN_CC facility located in NYISO’s Long Island K zone, according to the document.

Consolidated Edison Company of New York has submitted a notice of withdrawal from its Hudson Avenue 3 and 5 units located in the J area of ​​NYISO New York. Each unit has a nameplate capacity of 16.3 MW, and Con Edison has proposed a decommissioning date of Nov. 1, 2022.

And production owner Helix Ravenswood said it intended to cease operations and retire three gas-fired combustion turbines on May 1, 2023. Ravenswood’s gas turbines began operating between 1967 and 1970, have a combined power rating of 68.6 MW and are in NYISO Zone J.

The company said in the withdrawal notice that effective May 1, 2023, Ravenswood will no longer have any gas turbines operating at its site, having already withdrawn units totaling 381.1 MW at the Queens site, New York.


In late February, Astoria Gas Turbine Power, a wholly-owned subsidiary of NRG Energy, submitted a decommissioning notice for 12 dual-fuel, single-cycle combustion turbine generator sets that began operation in 1970, totaling 558 MW of capacity.

NYISO’s Comprehensive Reliability Plan, released in December 2021, found that New York State’s bulk electric transmission facilities “as planned will meet all currently applicable 2021-2030 reliability criteria for the predicted system demand in normal weather”.

The reliability plan determined that reliability can be maintained with the withdrawals of the peak rules, but it also identified risk factors that could arise for several reasons, including climatic, economic, regulatory and political factors.

“Reliability margins will decline in future years primarily due to the expected unavailability of simple-cycle combustion turbines that are affected by the DEC peak rule,” NYISO said in the report.

Over the next 10-year period, NYISO predicts a decrease in electricity demand due to energy efficiency initiatives and increased volumes of behind-the-meter solar generation.

However, significant impacts on load growth have also been predicted due to the expected growth in the use of electric vehicles, large cloud computing data centers and other electrifications such as home heating conversion , cooking, water heating and other end uses from fossil fuel based systems. to electrical systems, said the NYISO.