LANSING — Michigan utility regulators unanimously approved DTE Energy’s plans for a nearly $1 billion natural gas power plant in St. Clair County over objections from renewable energy advocates.
The Public Service Commission’s approval came amid ongoing debate about the state’s energy future as coal plants shutter and whether the natural gas plant would best serve DTE’s 2.2 million electric ratepayers in Southeast Michigan and the Thumb.
It is the first new large power plant the commission had approved since the early 1990s, according to a commision spokesman.
“We’re really happy with the decision today,” said Trevor Lauer, president and chief operating officer of DTE Electric who added the plant “complements the renewable energy we continue to add” to the energy mix.
DTE calls the plant a key piece of its plan to keep the lights on while weaning itself from high-polluting coal in favor of cleaner, cheaper fuel sources: a combination of natural gas and renewable resources.
But the proposal was fiercely contested by environmental groups over the past year, who expressed their disappointment Friday.
“DTE Energy did not prove the gas plant is in the best interest of Michigan ratepayers,” Liesl Clark, president of the Michigan Energy Innovation Business Council, a trade group representing the state’s advanced energy sector, said Friday.
“The Commission should have ordered DTE Energy to submit a plan that included more renewable energy, like wind and solar, and energy efficiency to bolster Michigan’s advanced energy economy and hedge against volatile natural gas prices.”
The 1,110 megawatt plant will power 850,000 homes when it goes online in 2022, DTE says. It’s planned in East China Township, where the utility’s aging 1,429-megawatt coal-fired power plant will close by 2023.
Friday’s order called the natural gas-burning plant the most “reasonable and prudent” way to supply power needed for a reliable energy grid. The order said DTE could recoup up to $951.8 million from ratepayers for construction — less than the $989 million the utility requested.
The proposal drew strong opposition from several environmental groups, a pair of solar energy industry organizations and the Union of Concerned Scientists.
Critics argued natural gas — cleaner than coal, but still a fossil fuel that emits greenhouse gases speeding climate change — should play a smaller role in the utility’s energy mix as renewable energy technology improves and prices fall.
The groups tried to poke holes in DTE’s modeling and convince the commission that the utility didn’t fully consider other options — including a mix high in renewable energy and “demand response,” which involves paying customers to cut their usage at peak hours.
Along with its victory, DTE got a scolding during Friday’s meeting. Each of the commissioners said the utility did not freely share data during the lengthy proceedings and its attacks on opponents in filings lacked civility.
“A Commission proceeding is not the place for name calling and what I would refer to as attempts at legal bullying,” said Commissioner Norman Saari, who added “If it happened in a basketball game, the referee would give them a technical foul for taunting.”
Responding to the criticism, Lauer told reporters: “It’s something we have to learn from at DTE Energy. It’s not the way we want to be portrayed,” and it “got heated at times during the process.”
The dispute came as DTE and utilities across the country are rapidly shifting away from coal power to cut carbon dioxide emissions and deciding how best to fill the void.
DTE generated 61 percent of its electricity from coal as recently as 2016. But it recently announced plans to slash carbon dioxide emissions by 80 percent from 2005 levels by 2050, with a mix of new natural gas and renewable generation.
The utility plans to retire of 11 of its 17 coal-fire generators within five years, following the blueprint of large utilities cross the country.
The state’s other mammoth utility, Consumers Energy, announced plans this year to slash its carbon dioxide emissions by 80 percent and burn zero coal by 2040.
The Public Service Commission’s vote Friday was its major decision since landmark energy legislation triggered new guidelines for proving power plants meet the public’s interest.
Those guidelines — which DTE did not fully meet— did not apply to the natural gas plant proposal because it was filed before they were finalized, rankling the utility’s opponents.
Even so, Chairman Sally Talberg called the plant the best option for ratepayers, saying “we did not feel comfortable” that models offered by renewable energy advocates were accurate.
Coal power dims in Michigan
Coal once dominated Michigan, but now it’s fading fast. Since 2010, Michigan utilities have retired at least 26 coal generators at 15 power plants, while 17 generators at six plants are set to retire by 2025. Three other old coal plants converted to burning natural gas. This map shows that changing energy landscape. Click on the coal plant icons for details.
Source: U.S. Energy Information Agency data, public announcements and media reports.