PJM Market Monitor Joe Bowring said that the RTO must include strong market-power protections in rules allowing generators to change their offers hourly.

PJM and the Monitor are considering the changes to reduce uplift and gaming opportunities and allow quicker solving of the day-ahead energy market.

PJM Market Monitor Joe Bowring had a lively debate with one of the consultants for Powhatan Energy over the “duty” of market participants to self-police against market manipulation.

Calpine won PJM stakeholder approval for an initiative that could give generators more flexibility in pricing following an unusually lengthy debate before the Markets and Reliability Committee Thursday.

PJM stakeholders approved tighter rules on generator lost opportunity costs but rejected a proposal to limit eligibility to the most flexible combustion units.

A summary of measures approved by the PJM Markets and Reliability and Members Committees on March 31, 2015.

PJM members were asked last week to consider allowing generators to revise their offers hourly in the energy market to reflect changes in gas prices.

Last winter’s cold raised concerns about economic withholding, the PJM Independent Market Monitor said in its annual State of the Market report.

FERC increased its pressure on PJM and MISO to resolve their longstanding boundary disputes, saying it was considering taking action “to improve the efficiency of operations” at the RTOs’ seam.

PJM CEO Terry Boston has announced he will retire by the end of the year. He leaves behind a legacy of building stakeholder consensus and steady leadership.