Minnesota’s Sherco Energy Hub Transforms with Solar and Storage

The Sherco Energy Hub in Minnesota is set to undergo a significant transformation, moving towards renewable energy solutions that will replace traditional coal and natural gas power sources. This shift is particularly notable given recent federal energy policy changes that temporarily revitalized aging coal plants. Energy Secretary Chris Wright has issued a series of emergency orders to keep these facilities operational, but the future of energy in the region appears increasingly linked to cleaner alternatives.

Located in Becker, near Minneapolis, the Sherco facility is at the forefront of this transition. Eight years ago, site owner Xcel Energy planned to replace its coal power plant with a new 786-megawatt natural gas facility. However, state regulators raised concerns about the $1 billion cost, and advocacy from clean energy supporters shifted the focus towards more sustainable options. This led to the evolution of the Sherco Energy Hub, which now prioritizes renewable energy sources.

The centerpiece of this hub is the Sherco Solar array, a massive 710-megawatt solar project expected to be fully operational by 2026. This installation will effectively replace the capacity of a retired coal unit at the site. Additionally, plans are in place to retire the remaining coal units by 2030, aligning with Xcel’s broader strategy to phase out coal across the region.

In a recent filing with the Minnesota Public Utilities Commission (PUC), Xcel detailed its ambitious plans for the Sherco site. These include the construction of the largest battery energy storage system in the Midwest, with a capacity of 600 megawatts, which is double the size of a previously approved system. Moreover, an additional 135.5 megawatts of storage capacity is slated for Xcel’s Blue Lake operation in Shakopee.

The comprehensive plan also outlines an expansion of the Sherco Solar array with the addition of a new 200-megawatt solar plant in Clear Lake Township, further enhancing the facility’s renewable energy output. Collectively, these projects will yield a total capacity of 910 megawatts, significantly surpassing the previously proposed gas plant capacity.

Xcel anticipates qualifying for federal tax credits that could cover up to 30% of the Blue Lake battery costs and 40% of the expenses associated with the solar projects at the Sherco Energy Hub. Construction on these initiatives is planned to commence in 2026, with the aim of having the battery storage operational by late 2027.

In a statement, Bria Shea, president of Xcel’s Minnesota, North Dakota, and South Dakota operations, emphasized the importance of this investment in battery storage for the future of Minnesota’s energy landscape. “Batteries help us store energy when it’s inexpensive to produce and dispatch it when needed, allowing us to continue delivering reliable electricity to customers while keeping bills low,” Shea explained.

Beyond renewable energy production, Xcel is also innovating in land management practices at the Sherco site. The company has partnered with Minnesota Native Landscapes to implement a solar grazing program, allowing nearly 2,000 sheep to graze among the solar panels. This practice not only reduces mowing costs but also promotes local agriculture and environmental health.

Sheep grazing helps manage vegetation effectively, supporting the growth of native plants while avoiding chemical treatments. Additionally, the presence of sheep contributes to soil health through natural fertilization and helps improve water quality in the area.

As the energy landscape shifts, the example of the Sandy Creek coal power plant serves as a stark reminder of the challenges facing traditional coal facilities. Commissioned in 2013, it was the last new coal plant added to the U.S. fleet. As of April, one unit at Sandy Creek has been out of operation due to unexpected issues, illustrating the ongoing struggles of aging coal infrastructure.

Amidst these developments, the push for renewable energy solutions continues to gain momentum. Xcel’s strategy to transition away from coal reflects a broader trend in the energy sector, prioritizing sustainability and reliability over outdated technologies. The company’s proactive measures at the Sherco Energy Hub not only highlight the potential for renewable energy but also underscore the importance of community engagement and innovative practices in shaping the future of energy.