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By Scott DiSavino

May 18 (Reuters) – The Independent Market Monitor for U.S.

power grid operator PJM said late Thursday it filed with federal

regulators to withdraw a complaint against an unnamed

participant in PJM’s power capacity auction, which concluded

last week.

PJM, which operates the power grid serving 60 million people

in 13 Mid-Atlantic and Midwest states, will announce the results

of the auction, which could be worth $10 billion, later Friday.

The auction, called the Reliability Pricing Model (RPM) and

held from May 7-11, will secure power resources for the

2015/2016 delivery year to help ensure the future reliability of

the grid. Capacity resources include new and existing power

plants, demand response and conservation programs.

On May 1, the market monitor complained to the U.S. Federal

Energy Regulatory Commission (FERC) that an unnamed participant

tried to bid a new project into the auction that included an

out-of-market state subsidy that did not comply with PJM’s

Minimum Offer Price Rule (MOPR) for new combined cycle and

combustion turbine natural gas plants.

The minimum offer rule was put in place to prevent load

serving entities like utilities from bidding new power plants

into the market at anticompetitive offers below the cost of

building the new generation.

New Jersey and Maryland offered long-term capacity contracts

to New Jersey power company NRG Energy Inc, New York oil

company Hess Corp and privately held Maryland power

company Competitive Power Ventures (CPV) to build a few power

plants in their states.

The states want the new generation to create construction

jobs, spur economic growth, reduce power prices, allow for the

retirement of older, dirtier plants and ensure a reliable supply

of in-state generation.

The market monitor and owners of several existing power

plants in PJM, however, have filed complaints with FERC and

lawsuits in federal and state court, arguing these long-term

state capacity contracts were anticompetitive out-of-market

subsidies that could distort the capacity market.

The existing generators make millions in the capacity market

so any reduction in capacity prices would eat into their

revenues and may even knock some of their existing plants out of

the market.

MARKET MONITOR WITHDRAWAL

In the notice of withdrawal, the market monitor determined

that “no harm to the markets will result as a consequence of the

violation identified in the complaint. The complaint is

therefore moot.”

Last week, two power companies with dozens of power plants

in PJM potentially worth over $1 billion in capacity payments,

Illinois based Exelon Corp and New Jersey based Public

Service Enterprise Group Inc (PSEG), joined the market

monitor in complaining about the unnamed participant.

Officials at PSEG were not immediately available for

comment. Officials at Exelon could not immediately comment.

Looking forward, the market monitor said there were still

problems with the minimum offer rule and out of market subsidies

that will require resolution hopefully before the next big

capacity auction, called the Base Residual Auction, in May 2013.