Alliant Energy Loan Puts Grid Capacity in AI Power Focus

US Closes $5.1 Billion Loan to Alliant Energy for Power Generation and Energy Storage

WASHINGTON, United States — October 28, 2026 — The US Department of Energy said on Wednesday it has closed a $5.1 billion loan package to Alliant Energy to expand power generation and bolster the grid at plants in Iowa and Wisconsin. The development draws attention to grid capacity, a constraint that bears on the AI power management market. The Reuters report did not link the loan to AI data centers.

The department said the investments will support new natural gas-fired power plants, energy storage systems and upgrades to existing generation facilities. The projects are expected to create hundreds of construction-related jobs and deliver more than 2.6 gigawatts of new or upgraded capacity, enough to power nearly 1.8 million homes, it said.

The loan was first proposed by the Biden administration in January 2025 as a conditional $3 billion loan. It sits under the Office of Energy Dominance Financing, formerly the Loan Programs Office. Energy storage, which typically includes batteries, was supported in both the initial and the closed loan, Reuters reported. Loan office director Gregory Beard said in a release that the new power would strengthen energy security and lower electricity costs. Reuters noted that any reduction in costs could take many years, as the loans run over decades.

According to Next Move Strategy Consulting, the AI power management market covers the hardware, silicon and software that convert, distribute, monitor and control electrical power inside facilities that train and run AI models. NMSC valued the market at USD 15.80 billion in 2025 and estimates USD 21.30 billion in 2026. It forecasts USD 96.00 billion by 2035, a compound annual growth rate of 18.2% from 2026 to 2035.

Key Highlights:

• The department said the funding supports new natural gas-fired plants, energy storage systems and upgrades to existing generation in Iowa and Wisconsin.

• The projects are expected to deliver more than 2.6 gigawatts of new or upgraded power generation capacity.

• Energy storage, which typically includes batteries, was supported in both the initial and the closed loan, according to Reuters.

• The package grew from a conditional $3 billion loan proposed in January 2025 to the $5.1 billion loan closed this week.

Analyst Insight:

According to analysts at Next Move Strategy Consulting, grid interconnection and power availability limits are the largest restraint on the AI power management market, which NMSC estimates reduces 2026–2035 growth by about 3.4%. Escalating accelerator and rack power draw is the largest driver, adding an estimated 4.8%.

NMSC analysts note that AI data center energy management software, which forecasts rack load and caps peaks, lets colocation and neocloud providers place more compute inside a fixed grid allocation. They add that power distribution systems are the fastest-growing offering, at 21.3% CAGR from 2026 to 2035. NMSC’s market definition excludes onsite generation and utility grid equipment upstream of the data hall, so generation and grid financing of the kind in the Alliant loan falls outside the scope of its report.

Industry Outlook:

The loan is a separate energy-infrastructure development, but it reflects the scale of investment in generation, storage and grid capacity that connects to the power available for large computing loads. NMSC projects the AI power management market to grow at an 18.2% CAGR through 2035, with North America holding about 48% of revenue in 2025. How quickly utilities connect new load will remain a key variable for equipment orders across the market.

Source: Reuters

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Prepared By: Sanyukta Deb