Rapid expansion of hyperscale data center development is reshaping long-term energy infrastructure planning in Wisconsin, with regulators projecting a substantial increase in electricity demand over the next several years. The anticipated growth is expected to influence utility construction programs, generation investments and transmission planning across the state.
A draft Strategic Energy Assessment released by the Wisconsin Public Service Commission projects statewide peak electricity demand will rise from 14.2 gigawatts in 2026 to 20 gigawatts by 2032.
State regulators attributed most of the projected increase to large-scale data center campuses under development in Beaver Dam, Port Washington and Mount Pleasant.
According to the assessment, hyperscale data center projects account for approximately 4.17 gigawatts of additional projected demand, representing roughly 72% of the anticipated increase through 2032.
The facilities are located within the service territories of utilities including Alliant Energy and WEC Energy Group. The Mount Pleasant project was recently brought online by Microsoft.
Utilities and regulators noted that data center construction is becoming a major factor in long-term energy planning, particularly as large campuses require extensive electrical infrastructure, generation capacity and transmission upgrades.
The latest assessment shows utilities are planning substantially larger additions of natural gas generation capacity compared with previous forecasts.
Electric providers are projecting approximately 5,400 megawatts of new natural gas generation or upgrades to existing facilities by 2032. That compares with roughly 2,500 megawatts identified in the prior forecast period.
Renewable energy development is also expected to expand. Planned solar additions increased to more than 5,100 megawatts during the forecast window, while projected wind generation additions rose to approximately 1,370 megawatts. Utilities also anticipate deploying 2,250 megawatts of battery storage capacity.
The report projects coal-generated electricity will decline sharply by 2032, while natural gas generation is expected to account for half of Wisconsin’s energy mix under current planning assumptions.
The assessment also evaluated pathways toward net-zero carbon dioxide targets by 2050. Under long-range modeling scenarios, nuclear generation capacity could play a larger role beginning in the mid-2030s as future nuclear resources become available.
State energy planners projected nuclear generation could account for a significantly larger share of Wisconsin’s electricity portfolio in later decades under those scenarios.
Utilities emphasized that large energy users, including data centers, are expected to bear the cost of infrastructure developed specifically to support their operations.
For contractors, developers and infrastructure owners, rising power demand tied to data center construction is expected to increase activity across utility, industrial and energy sectors. Large-scale data center campuses typically require substantial investment in substations, transmission infrastructure, backup power systems and generation assets.
The forecasted demand growth may also accelerate procurement opportunities involving grid modernization, gas-fired generation, renewable energy construction and battery storage deployment throughout Wisconsin and surrounding regional markets.
Source: Wis Politics.
