Consumer groups, lawmakers seek to reduce impact of $2 billion cost of closing Wisconsin coal plants

WEC Energy Group's recent announcement that it will be coal-free by 2032 is likely to bring new urgency to questions about how to pay off outstanding debt on unwanted coal-generation plants and whether utilities should be able to profit from them even after they're shut down.

WEC, the parent company of We Energies and Wisconsin Public Service Corp., recently laid out a schedule that reiterates its commitment to closing the four oldest coal-burning units at Oak Creek over the next two years, while for the first time putting a 2031 closing date on what will be the last coal-burning plant operated by the state's largest utilities.

The company estimates replacing coal generation with renewable energy resources will result in about $2 billion in customer savings over the next 20 years, including $50 million in operations and maintenance costs at Oak Creek.

Alliant Energy is projecting similar savings as it prepares to shut down its two remaining coal-burning plants by 2026.

That's welcome news for customers, but retirement of the plants doesn't, in and of itself, mean lower electricity bills.

How to handle millions in debt remains to be determined

The shutdowns are driven by changed energy economics that have made wind and solar cheaper than coal, resulting in plant retirements before millions of dollars of debt owed to bondholders and investors are repaid. Those costs need to be recouped, and that money will come from the utility's electric customers.

Statewide, the Wisconsin Industrial Energy Group estimates those "sunk costs" will add up to more than $2 billion dollars, mostly due to pollution controls installed by the utilities in the past decade.

Meanwhile, Wisconsin's utilities project billions in spending to develop renewable resources to replace the coal-burning plants and meet future demand, costs that also will be borne by ratepayers.

Those costs are a necessary step toward meeting state, local and corporate carbon reduction goals, but they can be counterbalanced by measures that prevent utilities from profiting on that outstanding debt, said Tom Content, executive director of the Wisconsin Citizens Utility Board.

"Nobody was banking on spending all that money and not having that generation last," Content said. "But the economics of coal changed, the utilities' decarbonization plans and interest in renewable energy changed. The shareholders are doing very, very well on all this new investment and we really want customers to get a break on plants that are no longer being used shut down. That's why our our tagline is no profit for dead coal."