1. Iowa Industrial Energy Group: 2016 Spring Conference Bob Bartlett April 12, 2016 Classification: CONFIDENTIAL

2. 22 And our industry is helping lead the change  Technology advancements  Continued growth in natural gas supply  Increased development and integration of renewables  More customer-owned generation  Regulations and public policy impact The future of energy is changing

3. 3  Installing air quality control systems and modernizing our coal-fired units  Retiring older, smaller fossil- fueled generating units  Increasing highly efficient natural gas-fired generation  Adding wind, solar, and other renewable resources  Continuing to support robust energy efficiency programs Innovation through Responsible Resources

4. 4 Modernization of our Generation System

5. 5 2015 dataIowa Electric Customers489,000 Electric Distribution Line (miles) 20,400 Gas Customers225,000 Gas Main (Miles)5,100 Owned Generating Capacity (MWs) 2,450 Electric Sales (000s MWh)14,800 Iowa Service Territory  Incorporated in 1925  ~50,000 square miles  80 counties  650 communities  ~1.1 million people Alliant Energy in Iowa 5

6.  Coal Generation Lansing, Ottumwa, Burlington and Cedar Rapids (Prairie Creek)  Gas Generation Mason City (Emery), Clinton (M.L. Kapp) and Marshalltown (Sutherland)  Renewable Generation Whispering Willows Wind Farm in Franklin County 2015 \ Electric Power Sources Main Iowa Generation Facilities 6

7.  An approximate 650-megawatt natural gas facility  Scheduled to be in-service by second quarter 2017 Future facility: Marshalltown Generating Station

8. 8  Our focus on customer value emphasizes affordability and exceptional service, both now and in the future  Continuing to develop additional opportunities to interact with customers Our “Customer-Driven” Approach

9. 9  Foundation and corporate giving programs provided more than $6.8 million in 2015  Partnered with hundreds of organizations across Iowa including:  The Nature Conservancy  Governor’s STEM Advisory Council  United Ways  Food Banks  Habitat for Humanity  Junior Achievement  Trees Forever  Employee and retiree volunteer engagement programs  Grants for volunteer efforts  Assistance with the Iowa Employer Volunteer Initiatives with Volunteer Iowa office Alliant Energy Gives Back

10. 10 2016 Elections…

11. 11 Candidates’ Views on Energy  Clinton/ Sanders oppose Keystone XL Pipeline, support Clean Power Plan, renewable energy subsidies  Republican candidates are generally opposed to Clean Power Plan, and other major EPA rules  Democrat victory: Expect same commitment as Obama to climate change and a strong EPA. Goal of 50% electricity from renewables by 2030  Republican victory: Expect “slowing” of major rules, efforts to open up more federal lands for oil and gas development

12. 12 Election could change balance of power

13. Congressional Map

14. 14 2016 Advocacy Priorities  LIHEAP – Low Income Energy Assistance Program  PURPA – Public Utility Regulatory Policies Act  Pipeline Safety  Coal Ash  Clean Power Plan  New business development  Economic development  Other e.g. renewables

15. 15  Iowa Efforts  Iowa DNR stakeholder state plan discussions (currently on-hold)  EPA public comments  Outlook for CPP Litigation  February 9 – Supreme Court stay  June 2-3 – Oral arguments D.C. Circuit Court  Fall 2016 – D.C. Circuit Court decision  Early 2017 – Petition for Supreme Court review  Early 2018 – Supreme Court decision  Our generation strategy provides flexibility in transitioning to cleaner resources and is independent of the Clean Power Plan Clean Power Plan Update

16. Questions