Managers of the state”s primary electricity grid expect to avoid rolling blackouts this summer but not without calling on Texans to turn up their thermostats and conserve power during peak usage on the season”s hottest afternoons.

The Electric Reliability Council of Texas is also bringing back mothballed power plants — some 35 to 40 years old — to give itself a larger margin of error than last summer’s near-miss on rolling blackouts.

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A consultant”s report on how to address the lack of investment in new generation is expected June 1.

Randy Moravec is executive director of the Texas Coalition for Affordable Power, a group of 160 cities and other political subdivisions that purchase electricity in the competitive market.

He said ERCOT”s summer power forecast should give state policymakers a little breathing room.

“This report suggests the need for continued careful deliberation but not rushed, short-term changes that could shock the market and increase prices,” Moravec said.