Alliant Energy Corporation · NASDAQ:LNT
Alliant Energy — Corporate Update (2026)
23 slides from Alliant Energy's corporate update, 2026
Slide 1: Morgan Valley Energy Center
Morgan Valley Energy Center Linn County, Iowa
Slide 2: Alliant Energy in Iowa
Alliant Energy in Iowa We proudly serve 500,000 electric and 225,000 natural gas customers across Iowa Balanced Strategy Community Investment Our energy strategy We invest in infrastructure and balances traditional and energy capacity that renewable resources, as well strengthens Iowa communities as
Slide 3: Alliant Energy in Eastern Iowa
Alliant Energy in Eastern Iowa Linn County is our largest load center in Iowa, with a strong presence in Cedar Rapids. Community Commitment Balanced Investments Economic Growth With 600+ employees in Linn We invest in a diverse mix of As our largest load center, Linn County, we are deeply rooted in
Slide 4: Growing Linn County
Growing Linn County Morgan Valley Energy Center is critical to provide reliable, secure energy to our customers and meet increased load obligations. Morgan Valley Energy Center (NEW) Technology: Combustion turbine facility Capacity: 720 MW Purpose: Necessary to meet energy load obligations Footprint
Slide 5: Morgan Valley Energy Center
Morgan Valley Energy Center 5
Slide 6: Our Balanced Energy Portfolio
Our Balanced Energy Portfolio We invest in natural gas generation alongside renewables to keep energy reliable and affordable. WIND SOLAR & BATTERY NATURAL GAS Top-5 regulated wind STORAGE owner nationwide with We are investing in Continued expansion of natural gas across Iowa approval for ~1,000 MW
Slide 7: How We Evaluate the Need for New Resources
How We Evaluate the Need for New Resources Before proposing any project, we ask three fundamental questions to make sure it is the right thing to do for our customers and communities. “Is the energy supply “Does this provide value “Will it benefit reliable?” for our customers?” communities we serve?
Slide 8: Energy Demand is Increasing
Energy Demand is Increasing • Electric utilities within the Midcontinent Independent System Operator (MISO) footprint must secure capacity resources sufficient to meet their forecasted seasonal load with reserve margin to support reliability. • Load is growing in Alliant Energy's service territory a
Slide 9: Resource Adequacy in the Midwest and US
Resource Adequacy in the Midwest and US Alliant Energy is in the Midwest Reliability Organization (MRO) and the resources are dispatched by the Midcontinent Independent System Operator (MISO) Meeting reliability needs relies on implementation of 50 GW of expedited resource additions Source: NERC 202
Slide 10: Regulatory Process Overview
Regulatory Process Overview Morgan Valley Energy Center is subject to extensive, independent regulatory review. 1 2 3 4 5 6 Site Selection Public Info Meeting Application Filed with Zoning Application Air Permit Filed with Regulatory Review Fall 2025 March 2026 IUC Filed with Linn LCPH 2026-2027 Apr
Slide 11: The Role of Morgan Valley Energy Center
The Role of Morgan Valley Energy Center Morgan Valley is needed to support load obligations and deliver reliable energy to customers. Balanced Resources Energy Security Growth Capacity Complements our renewable Provides 720 MW of on-demand Creates available energy capacity portfolio with reliable, d
Slide 12: Project Overview
Project Overview ELECTRIC INTERCONNECTION TRANSMISSION OWNER 720 MW Morgan Valley Substation The Facility will interconnect to two ITC Midwest Electric transmission ITC transmission lines via an on-site substation. NATURAL GAS PIPELINE WATER The Facility will be provided natural gas via a pipeline b
Slide 13: Site Selection Considerations
Site Selection Considerations Proposed Morgan Valley Energy Center Site: south of HWY 30, east of Linn Benton Road Interconnection Land Suitability • Access to adequate fuel supply and electrical outlet (pipeline • Proximity to dwellings expansion required) • Appropriate drainage and terrain • Minim
Slide 14: Site Selection Timeline
Site Selection Timeline How Alliant Energy arrived at the current Morgan Valley Energy Center site Project proposed for Big Cedar Industrial Center near Fairfax. The site is owned by Alliant Early 2025 Energy and is in an industrial area. Feedback from Eastern Iowa Airport raises concerns about site
Slide 15: Project Schedule
Project Schedule Permitting Construction Operational 2026 2028 2031 Key Milestones File with IUC → Environmental review → Permit approvals → Site preparation → Facility construction → Commissioning → Commercial operation *Subject to change 15
Slide 16: Morgan Valley Energy Center View
Morgan Valley Energy Center View Note: Photo renderings are for illustrative purposes only. The final siting of the facility within the designated parcel and equipment design will meet all regulatory requirements and is subject to approval. 16
Slide 17: Project Components
Project Components • Fin fan coolers/radiators • Maintenance/warehouse building • Admin/control building • Exhaust stacks • Auxiliary/electrical building • Generation interconnection • Gas yard 17
Slide 18: Preliminary Sound Levels
Preliminary Sound Levels Sound Pressure Environment Level (dBA) • ADD 100 Motorcycle at 25 feet 90 Small propeller aircraft flyover 80 Heavy truck passing at 50 feet Inside a commercial aircraft cabin 70 (smallest circles) 65 Washing machine running 60 Normal Conversation at 3-5 feet 55 Light Rainfa
Slide 19: Our Environmental Commitments
Our Environmental Commitments Protecting the environment and public health is central to how we plan, build, and operate. Natural Resources Water Use Air Quality We anticipate no impacts to wetlands, The facility is designed to minimize Air emissions will be carefully evaluated endangered species, o
Slide 20: Environmental Studies and Mitigation
Environmental Studies and Mitigation The following studies are part of the environmental permitting process. 1 2 Wetlands and Waterways Endangered Species Completed: April 2026 Completed: April 2026 3 4 Cultural Resources Air Construction Permit (Archeological) Expected to Submit Application: July 2
Slide 21: Environmental Studies and Mitigation
Environmental Studies and Mitigation Our Approach Follows the Established Regulatory Timeline • We are requesting a generating certificate at this stage because the regulatory process is designed this way. Environmental studies and the permitting process occur on parallel tracks — both are part of a
Slide 22: Our Commitment: Growth
Our Commitment: Growth When growth is structured correctly, it can help keep rates stable for everyone. You will not pay for large-load user growth. Large-energy users pay for the grid investments needed to serve them, not existing customers. Your reliability comes first. We complete necessary upgra
Slide 23: Our Commitment to You
Our Commitment to You Alliant Energy has committed to keeping electric base rates stable through the end of the decade. 1-800-ALLIANT alliantenergy.com/morganvalley GCU-2026-0002