Data Center Site Selection in Iowa

Iowa’s case for data centers rests on power. Wind turbines generated 59% of the state’s electricity in 2023, the highest wind share of any state.¹ Iowa is also among the 10 states with the highest electricity sales per capita and among the 10 with the lowest average electricity price.¹ Hyperscale operators followed. Google in Council Bluffs, Meta in Altoona and Microsoft in West Des Moines built some of the largest campuses in the Midwest,¹⁰¹¹ and Alliant Energy now serves new Google and QTS campuses in Cedar Rapids.¹²

Two investor-owned utilities serve most of the state’s large loads: MidAmerican Energy across central and western Iowa, and Alliant Energy in much of eastern Iowa. Municipal utilities and rural electric cooperatives serve the rest, so the first question for any parcel is which utility service territory it falls in. Both investor-owned utilities sit in the MISO footprint; our MISO guide explains how the regional market and transmission planning shape timing.

Iowa’s data center activity sits in three clusters, each with a different utility and land profile.

Council Bluffs is Google’s Iowa base. In 2025 Google announced an additional $7 billion of investment in Iowa over two years for cloud and AI infrastructure, including expansion of the Council Bluffs facility and a new data center in Cedar Rapids.¹⁰ Because Council Bluffs faces Omaha across the river, a western Iowa search often runs alongside a Nebraska site search.

In the Des Moines metro, Meta began building in Altoona in 2013, and later expansions were set to push the campus past 5 million square feet of data center space, making it Meta’s largest.¹¹ Microsoft has built repeatedly in West Des Moines; the city described one later project as a $1.5 to $2 billion investment.¹³ Cedar Rapids is the newest cluster. On Alliant’s July 2026 earnings call, the company said Google had energized transmission service there and would ramp demand on its contracted schedule, and that QTS was building a seven-building campus with initial energization of 300 MW expected later in the year.¹²

Iowa does not have a single statewide data center tariff. Large loads are usually served under negotiated contracts that the Iowa Utilities Commission reviews. MidAmerican states that data centers and other large-load customers pay for the infrastructure and generation required to serve them.² That generally means the customer funds dedicated substations and transmission work, an arrangement covered in our guide to contribution in aid of construction.

Pricing is usually set through individual customer rates (ICRs): rates negotiated for a single large customer and reviewed by the commission.³ Alliant told investors in late 2025 that the commission had approved ICRs for two data centers under construction in Cedar Rapids.⁷ Its chief executive has said those data centers will help enable a five-year rate freeze for other customers.¹⁴

Not everyone thinks the ICR approach is enough. In comments on a 2026 bill, the Midwest Energy Efficiency Alliance noted that Iowa has seen meaningful data center and cryptocurrency mining activity and that some are concerned the ICR mechanism does not go far enough given the pace of growth.³

Iowa’s wind build is the reason many operators chose the state. MidAmerican says it has invested nearly $16 billion in wind generation since 2004 and that it provides its Iowa customers with more than 90% renewable energy on an annual basis.⁶ Statewide, wind produced 59% of all generation in 2023.¹

Two cautions apply. First, “annual basis” means renewable output over a year is compared with customer use over a year. It does not mean every hour is served by wind, which matters to buyers pursuing 24/7 carbon-free energy or hourly matching. Second, a utility’s system mix is not the same as a dedicated supply contract. Operators that want specific clean energy attributes still contract for them, either with the utility or through the structures covered in our guide to renewable energy procurement.

For site screening, the practical point is that wind-rich territory does not remove the need for firm transmission and substation capacity at the parcel. A site several miles from a high-voltage line can still face years of upgrades, whatever the utility’s generation mix.

Iowa’s main state incentive is a sales tax exemption for qualifying data center businesses. Governor Kim Reynolds signed House File 976 on June 6, 2025, changing both the scope and the administration of the exemption.⁵ The main terms are below.

Facilities that began operating before January 1, 2026 are not subject to the new expiration dates.⁵ For a new project, the length of the exemption depends on where the facility sits, so confirm which term applies to a specific parcel with a tax advisor before it goes into a pro forma. Property tax treatment is negotiated locally and is separate; see our guide to sales tax exemptions by state for how Iowa compares.

In February 2026, Iowa lawmakers introduced House File 2447. It would have required data centers to report how much water and electricity they use and where it comes from, required utilities to create separate rates and fees for data centers, and halted data center construction until the serving utility had filed its data center rates with the state.⁸ The bill moved forward as House File 2690 but did not pass the second funnel deadline, so it did not advance in the 2026 session.³⁹

The bill’s failure does not settle the questions behind it. Water use and cost allocation were the two issues raised most often, and both tend to return in later sessions in states with fast data center growth, as has happened elsewhere. Treat a separate data center tariff or mandatory water reporting as a realistic possibility over the life of a project, and check local rules too, since counties and cities can act on their own; our guide to moratoriums and local restrictions covers how to screen for them.

1. 01Identify the serving utility: MidAmerican, Alliant, a municipal utility or a cooperative. Each has different large-load practices.
2. 02Ask for the utility’s large-load process and what an ICR would require, including who funds substation and transmission work.²
3. 03Confirm the distance to transmission and the substation capacity available in your timeframe, independent of the utility’s generation mix.
4. 04Test the sales tax exemption: the $200 million threshold, registration and annual reporting, and whether the 10- or 15-year term applies at that location.⁴⁵
5. 05Check water supply and local zoning early, given the 2026 debate over water reporting.⁸
6. 06Watch the 2027 session for renewed data center tariff or reporting bills.

A screen like this tells you which questions to send to the utility and county first. Our due diligence checklist covers the rest, and you can get a site reviewed if you want an outside screen of an Iowa parcel.