ALLIANT ENERGY ANNOUNCES NEW UPLAND PRAIRIE WIND FARM

The company has indicated that this project will add construction and other jobs,
as well as tens of millions of dollars
in additional property taxes to local communities
and lease payments to landowners.
“Apex wind projects are designed to meet the needs
of forward-thinking utilities such as Alliant Energy,” said Mark
Goodwin, President and
CEO of Apex. “We share the same priorities, especially strong community partnerships.”

Alliant Energy received approval in 2016 to add up to 500 megawatts of wind energy.
The company has requested a
similar expansion from the Iowa Utilities Board again in
2017. The combined projects would represent a $1.8 billion
investment and add up to
1,000 megawatts of new wind generation in Iowa. Together, that’s enough to power up
to
430,000 Iowa homes a year.

CLEAN ENERGY SHINES AS IOWA’S LARGEST SOLAR GARDEN COMES ONLINE

Alliant Energy’s Iowa energy company continues its move toward a clean energy future by placing Iowa’s largest solar
garden in service. The record-breaking site is one of two new solar energy resources from Alliant Energy. As of late
September, customers started getting solar energy from the five-megawatt West Dubuque Solar Garden, which is
now the state’s largest and most powerful individual site. In addition, customers are also benefitting from the new
1.2-megawatt Port of Dubuque Solar Garden.

Alliant Energy’s Iowa Company Reaches Partial Settlement on Pending Rate Review

Alliant Energy’s Iowa energy company has filed a proposed partial settlement agreement in its 2017 electric rate review. This agreement creates cost certainty for customers and allows Alliant Energy to continue to advance cleaner energy, to strengthen the reliability of Iowa’s power grid and provide innovative customer solutions.

“This collaborative process with our customer groups and our company created a fair agreement that supports our objective to provide exceptional service to our customers,said Doug Kopp, President of Alliant Energy’s Iowa utility. “I want to thank the Iowa Office of Consumer Advocate, the Iowa Business Energy Coalition and the Large Energy Group for coming together on this agreement.”

On April 3, 2017, Alliant Energy filed its first rate review in six years. An interim base rate increase went into effect ten days later. This agreement increases base rates less than 2 percent above interim rates. Under this agreement, the total increase from this base rate review would be 8.6 percent. Spread over the last six years, this increase would have equated to less than 1.5 percent annually. The final bill impact for each customer class will be decided as part of the rest of the rate review process.

Through the rest of 2017, customers will also continue to receive bill credits related to tax benefits and refunds on transmission expenses to offset the base rate increases and maintain competitive customer costs. In addition, under this agreement Alliant Energy will give more tax-related bill credits to customers in 2018.

ENERGY RESEARCH CONSORTIUM ANNOUNCES FIVE NEW MEMBERS

The Mid-West Energy Research Consortium has welcomed four new members to the
M-WERC team. SAS Institute, Alliant Energy, Madison Gas and Electric, OSIsoft and Tetra
Tech have all joined. M-WERC also thanked Kohler Company for their renewed support of
our organization. The SAS Institute is the world’s largest privately held software business
and is based out of Cary, North Carolina. They are a founding member of the Smart Cities
Technologies working group.

Alliant Energy Acquires Ownership Interest in Great Western Wind Farm

In June, EDF Renewable Energy announced the signing of the Purchase and Sale Agreement by which Alliant
Energy Corporation will acquire a 50% ownership interest in the 225 megawatt Great Western Wind Project.
Completion of the transaction is subject to regulatory approval and customary conditions precedent.

“EDF RE is a renewable energy leader, and we are proud to establish a partnership with them,” said Alliant Energy Vice President of Business Development Joel Schmidt. “Our 50 percent cash equity ownership interest in this Project aligns with Alliant Energy’s strategy to invest in renewable energy.”

EDF RE remains involved in the project as a 50 percent co-owner and provides management services. EDF Renewable Services provides a portion of the current operations and maintenance services as well as 24/7 remote monitoring from its Operations Control Center.

Located in Woodward and Ellis counties near the base of the Oklahoma panhandle, Great Western Wind is comprised of 30 V117 (unit capacity of 3.3 MW) and 63 V100 (unit capacity of 2.0 MW) wind turbines supplied by Vestas.  The Project achieved commercial operations in December 2016; electricity generated is provided to Google under a long-term Power Purchase Agreement.

Raphael DeClercq, Vice President of Portfolio Strategy for EDF RE, commented, “The sale of equity stakes represents an integral part of EDF Renewable Energy’s business model, allowing us to maintain a balanced ownership
portfolio in order to assist in the funding of new project development. We are pleased to forge a new business relationship with Alliant Energy on this first transaction. We are confident that our expertise as a developer and operator complements Alliant Energy’s renewable energy strategy.”

EDF Renewable Energy is one of the largest renewable energy developers in North America with 9 gigawatts of
wind, solar, storage, biomass and biogas projects developed throughout the U.S., Canada and Mexico.

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