Wisconsin Data Center Boom: Reshaping Energy and Water Demand

Wisconsin is experiencing a surge in data center development, poised to reverse decades-long trends of declining electricity and water demand. This growth presents both opportunities and challenges for the state’s utility systems and policymakers, requiring careful planning and investment to ensure enduring development.

The Rise of Data Centers in Wisconsin

A recent analysis by the Wisconsin Policy Forum highlights the important impact these facilities will have on the state’s resources. Driven by the need for increased data storage and processing capabilities, companies are increasingly choosing wisconsin for their data center locations. Construction has already begun on major projects, including a $15 billion data center in Port Washington, expected to consume 1.6 gigawatts of electricity in its first phase [3]. Microsoft is also investing $7.3 billion in a data center complex in Mount Pleasant,with plans to perhaps use up to 9 gigawatts upon completion of its second phase [3]. Additional large-scale data centers are proposed for Beaver Dam and DeForest.

Impact on electricity Demand

For years, wisconsin has seen a decline in peak electricity demand. From a high of 15 gigawatts in 2006, demand fell to 14.6 gigawatts in 2024, a decrease of 2.6% [3]. Though,projections now indicate a rise to 17.1 gigawatts within the next five years, largely attributed to the energy-intensive nature of data centers [3]. Vehicle electrification and other factors also contribute to this increasing demand.

Utilities are responding by planning significant investments in new power generation. We Energies, for example, announced plans in November to spend $5.4 billion to expand its electricity-generating capacity [3]. These projects include renewable energy sources like solar and wind farms, and also natural gas-fired power plants.

Water Usage and infrastructure

The impact extends beyond electricity. While Wisconsin has also experienced declining water demand in recent decades – the Mount Pleasant water utility sold 2.1 billion fewer gallons in 2022 compared to 1997 [3] – data centers will require substantial water resources for cooling purposes. Although data centers are becoming more water-efficient,new infrastructure,such as upgraded water mains,will likely be necessary to meet their needs.

Regional Concentration and Economic Impact

data center development is not evenly distributed across Wisconsin. Currently, the Milwaukee area is a hotspot, hosting 21 data centers [3]. The Wisconsin Data Center Coalition (WIDCC) is working to connect developers with qualified businesses and expertise to support this growth and ensure it translates into economic benefits for the state [1]. Wisconsin boasts 53 data centers and colocation facilities [2].

Challenges and Future Considerations

the Wisconsin Policy Forum report emphasizes the lack of publicly available data on the resource use of individual data center facilities, hindering a complete assessment of their impact. A key challenge will be determining how the costs of new infrastructure will be allocated and who will bear them. Policymakers must address these issues to ensure responsible and sustainable growth in the data center sector.

Key Takeaways:

• Wisconsin is experiencing a significant increase in data center development.
• This growth is expected to reverse decades of declining electricity demand.
• Utilities are investing billions in new power generation, including renewable and natural gas sources.
• Data centers will also impact water usage, requiring potential infrastructure upgrades.
• Greater transparency in data center resource consumption is needed for effective policymaking.

Published: 2026/01/07 20:16:22