Proposed agreement supports sustainable energy generation and lowers costs for customers
MADISON, Wis. – October 30, 2025 – Alliant Energy and QTS Data Centers (“QTS”) announced an agreement in principle to enable renewable energy resources across Wisconsin, lowering the cost for Alliant Energy’s planned renewable facilities. This proposed agreement will be facilitated by the sale of Renewable Energy Credits (RECs) from approximately 750 megawatts of new renewable energy sources, which will help meet the growing energy needs of Wisconsin and support sustainable growth across the state, all while providing long-term benefits for Alliant Energy customers.
“As an essential service provider in communities across Wisconsin, we take great pride in meeting customers’ energy needs as cost-effectively as possible,” said Raja Sundararajan, Executive Vice President Strategy and Customer Solutions, Alliant Energy. “Based on projections and identified trends, adding a mix of energy generation to our balanced portfolio, including wind, natural gas and energy storage, will serve increasing customer energy demands and ensure reliability.”
The partnership supports the addition of new renewable energy necessary for economic development across Wisconsin and enables Alliant Energy to lower costs of planned renewable facilities, bringing benefits to customers.
“QTS is committed to building and operating sustainable data centers and sourcing as much renewable energy as possible,” said Tag Greason and David Robey, Co-CEOs of QTS. “We are excited to support Alliant Energy’s renewable energy generation and to invest in Wisconsin. Not only will this advance sustainability in the state, but it will also help make renewable energy more accessible and cost-efficient for the communities we both serve.”
Learn more about Alliant Energy’s plans for sustainable growth.
About Alliant Energy
Alliant Energy Corporation (NASDAQ: LNT) provides regulated energy service to approximately 1 million electric and 430,000 natural gas customers across Iowa and Wisconsin. Alliant Energy’s mission is to deliver energy solutions and exceptional service to customers and communities count on – safely, efficiently and responsibly. Interstate Power and Light Company (IPL) and Wisconsin Power and Light Company (WPL) are Alliant Energy’s two public energy companies. For more information, visit alliantenergy.com and follow Alliant Energy on LinkedIn, Facebook, Instagram and X.
About QTS Data Centers
QTS is a global data center leader with unrivaled access to scalable infrastructure across North America and Europe. Powered by people and driven by purpose, QTS provides state-of-the-art data center solutions, robust connectivity and premium customer service to leading hyperscale technology companies, enterprises and government entities. QTS is a Blackstone portfolio company.
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