Alliant to file rate plan for 1,000MW Wisconsin solar mega-project


US utility Alliant Energy Corp has revealed its intention to file a rate plan with state regulators in the second quarter of 2020 for the first phase of what promises to be a 1,000MW solar project in Wisconsin state, set for multi-phase development in 2023.

Alliant has said it is also “watching closely” legislative initiatives that suggest that the neighbouring state of Iowa may be “early in the process” of building out solar generation. Alliant’s regulated utility subsidiary Interstate Power & Light Co. already has a significant wind generation fleet in the state.

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“We’re putting renewable energy to work for our customers by advancing our renewable energy investments and preparing the energy grid for more distributed energy resources,” Alliant Energy Chairman, President and CEO John Larsen told analysts in discussing the company’s fourth-quarter 2019 financial results.

Alliant serves more than 965,000 electricity and 415,000 gas customers in the states of Iowa and Wisconsin, meeting a peak summer demand of 5,459 MW. Alliant own 12 wind farms, representing a total combined 1,890 MW capacity.

Larson commented on the recent completion of the 200-MW Whispering Willow Wind Farm – North (New Wind) project in Iowa. “We now have nearly 70% of our planned 1,000 MW of new wind placed into service for our Iowa customers,” Larson said. “We are on track to complete the balance of this plan by the end of this year.”

According to a company release, Alliant will also add 730MW of gas-fired generation in 2020 to this year to “complement renewables.”

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