Environmental, Social and Governance About Alliant Energy Alliant Energy Corporation (NASDAQ: LNT) is a Performance Midwest U.S. energy company with annual operating revenues of more than $3.6 billion. Our company is primarily engaged in electric generation and the distribution of electricity and natural gas. We serve approximately 970,000 electric and 420,000 natural gas customers through our two public utility subsidiaries, Interstate Power and Light (IPL) and Wisconsin Power and Light (WPL). IPL provides retail electric and gas service in Iowa, and sells electricity to wholesale customers in Minnesota, Illinois and Iowa. WPL provides retail and wholesale electric and retail gas service in Wisconsin. Headquartered in Madison, Wisconsin, Alliant Energy Forward-looking Statements has approximately 3,600 This material includes forward-looking statements. These statements can be identified because they include words such as “expect,” “may,” “believe,” “anticipate,” “intend,” employees and more “plan,” “project,” “will,” “projections,” “forecast,” “outlook,” “estimate,” “target,” “goal,” or other words or expressions of similar import. Similarly, statements that describe than 24,000 shareowners future plans or strategies, our clean energy vision, transitioning our energy resources, planned resource additions, and future emissions reductions are forward-looking statements. These forward-looking statements are subject to risks and uncertainties that could cause actual results to differ materially from those expressed in, or implied by, the statements. of record. Based on Actual results could be materially affected by the following factors, among others: regulatory approvals; unanticipated construction issues, delays or expenditures; failure of electric sales, the largest equipment and technology to perform as expected; political conditions in Alliant Energy’s service territories; changes to Alliant Energy’s access to capital markets; economic cities served in Iowa and conditions in Alliant Energy’s service territory; and other risk factors discussed to Alliant Energy’s most recent Annual Report on Form 10-K filed with the U.S. Securities and Exchange Commission (“SEC”), including the section therein titled “Risk Factors,” and its other filings with the SEC. Alliant Energy undertakes no obligation to update publicly Wisconsin are Cedar Rapids such forward-looking statements to reflect subsequent events or circumstances. and Beloit, respectively. Alliant Energy | Environmental, Social and Governance Performance 1 Contents A note from our CEO 3 Environmental management 23 Cyber and physical security 40 Incident monitoring process Security programs Sustainability strategy 5 Environmental management program Business continuity Our sustainability pillars Assessment program Electric system reliability 43 Sustainability priorities 6 Compliance results Natural gas system performance 44 Stakeholder outreach 7 Greenhouse gases 26 Employee and contractor safety 45 Environmental, Social Scope 1 emissions Our safety commitment and Governance Oversight 8 Scope 2 emissions Programs and management Energy and climate 9 Customer electric system greenhouse gas emission rate Our Clean Energy Vision Supplier programs 48 Task Force on Climate-Related Financial Disclosures Thermal emissions 29 Workforce culture and engagement 49 Reductions achieved Carbon and Climate Change Governance Diversity, Equity and Inclusion Strategy Water management 31 Development and engagement Planning process Reductions achieved Health and wellness Strategic initiatives Clean energy transition Planning, risks and resilience Future workforce Integrated grid Collective bargaining and labor relations Waste management 33 Customer energy solutions Metrics and vendor audits Electrification adoption Economic development 51 Long-term climate outlook Recycling excellence recognition Community involvement 51 Research and development Coal combustion residuals 35 Risk management Facility closure 52 Management and compliance Identification and reporting Customer relations 52 Assessment and response Beneficial use highlights Metrics and targets Surface impoundments Community giving 53 Emissions reduction goals and progress Ecosystem and habitat 37 Regulatory alignment 54 Net-zero global carbon Initiatives and support Corporate governance 55 Energy efficiency 19 Avian Protection Plan Board of Directors Iowa programs Minimizing construction impacts Skills and qualifications Wisconsin programs Community tree programs Board diversity, age and tenure Renewable energy 21 Key compensation governance and pay practices Envision recognition 39 Customer renewable programs United Nations Sustainable Development Goals 57 Renewable portfolio standards Sustainability Accounting Standards Board 58 Alliant Energy | Environmental, Social and Governance Performance 2 A note from our CEO Our world has changed. Our commitment remains. Dear Colleagues, We are beginning the next chapter of our Customers and Friends, sustainability story by accelerating our path to eliminating all coal from our energy mix t Alliant Energy, our purpose and establishing new carbon dioxide (CO ) is to serve customers and 2 A emissions goals for energy generation. build strong communities. But the power of a purpose goes Achieving a 50% reduction in CO2 beyond what we say – it’s about emissions by 2030 (up from our prior what we do. John Larsen goal of 40%) Eliminating all coal from our generation How we deliver on our purpose fleet by 2040 (10 years faster than our reflects our broader responsibility – to our previous target) customers and the communities we serve. Last year, in our report, we highlighted the many And a new aspirational goal that achieves ways we are improving our environment – and net-zero CO2 emissions from the how we are acting for a better tomorrow. electricity we generate by 2050 This year, we are pleased to showcase The key to achieving these goals is even more examples of our environmental expanding our use of clean energy stewardship – as well as our efforts to address sources, like wind and solar. In May 2020, the important social needs of the communities we announced plans to retire one of our we proudly serve. We believe transparency Wisconsin coal-fired generating facilities and in sharing the results of our efforts benefits the first phase of construction that puts us all stakeholders. We are making progress. on a path to add 1,000 megawatts of solar We recently achieved one of our goals – to in Wisconsin by 2023. It’s all part of our have 30% of our energy mix come from Wisconsin Clean Energy Blueprint. Our Iowa carbon-free renewable resources – 10 years blueprint will be completed later this year. ahead of schedule. While I’m proud of this accomplishment, we cannot, and will not, rest (Continued) there. Alliant Energy | Environmental, Social and Governance Performance 3 To create even greater reliability for our customers, we are also Sustainability Highlights investing in battery storage and moving our power lines underground. Expanded our utility-owned wind farms in 2019 and 2020 Collectively, it’s a cost-effective way to deliver sustainable benefits with an additional 1,150 megawatts - making Alliant while creating new jobs, providing tax revenues and generating Energy the 3rd largest utility owner-operator of regulated economic development opportunities. I firmly believe this approach wind in the U.S. not only strengthens the communities we serve, it also improves our customers’ lives and creates a cleaner environment – for everyone to Achieved our goal that 30% of our energy mix come from enjoy. carbon-free renewable resources, ten years early, and we’re not going to stop there! As important as our efforts are to improve the environment – it’s Planned investments of $780 million to build solar equally important that we thoughtfully address the social needs of our projects totaling 1,000 megawatts by 2023 – enough to communities. Building stronger communities requires creating a more power 260,000 homes a year. diverse workforce. We strive to create a work culture that encourages employees to use their unique backgrounds, talents and perspectives $2.2+ billion planned investments to build smarter and to their fullest potential. We take actions to build unity and trust. We more resilient energy infrastructure. are passionate about and support programs that focus on social justice, Received Envision® Platinum rating for the West education and housing. We believe these actions help build equitable, Riverside Energy Center by the Institute for Sustainable respectful and resilient communities that are filled with opportunity. Infrastructure – this is in addition to our recent wind and solar facilities. As I look ahead, I’m consistently reminded that we’re all facing a new normal, as a result of the COVID-19 pandemic. At the same time, this Successfully achieved our air emissions performance health crisis has reaffirmed how essential energy services are to the metric one year ahead of schedule reducing sulfur country – and are a reminder of just how critical our purpose is to our dioxide (SO2) by 90%, nitrogen oxides (NOx) by 82%, employees, our customers and the communities we serve. and mercury by 95%. 35% reduction in fossil fuel generation carbon dioxide I hope you find the stories in this year’s report bring to life the many ways (CO ) emissions from 2005 levels. we work to Make things better and Do the right thing – for our employees, 2 customers and the communities we are so privileged