Understanding your Wisconsin bill and rates

We take great pride in our commitment to delivering safe, reliable energy to the customers and communities we serve. In December 2023, the Public Service Commission of Wisconsin (PSC) approved new electric and gas base rates for Alliant Energy customers covering years 2024 and 2025. The adjusted rates reflect our commitment to make things better for customers through smart investments that also create a cleaner and more cost-effective energy future.

As approved by the PSC, the rate adjustment will:

• Increase the average residential electric customer’s bill about $8.10 a month in 2025.
• Decrease the average residential natural gas customer’s bill about $0.20 a month in 2025. 

Visit myaccount.alliantenergy.com to see your individual usage.

Investing in a cleaner, cost-effective and diverse energy portfolio.

We are following the plan outlined in our Clean Energy Blueprint. We recently added nearly 1 gigawatt of solar-generated energy in Wisconsin. In addition, we're constructing 274 MW of energy storage.

These long-term investments are driven by lower lifetime costs for sustainable energy solutions, improvements in generation technology and the availability of new financial benefits associated with development projects.

Boosting energy security and reliability.

We continue to prioritize safety and security amid growing threats to America’s energy infrastructure. Our rate adjustment accounts for necessary investments to protect generation and distribution assets from the growing physical and cybersecurity threats – such as extreme weather events, domestic terrorists and global bad actors.

Our smart investments in zero-fuel-cost energy sources also increase energy security while reducing exposure to fuel price volatility in the global market. Combined with new energy storage assets, distribution line undergrounding and other grid strengthening efforts, we are building a safer and more resilient energy network to deliver the energy customers need.

Supporting customers and expanding energy options.

We are delivering new tools to support customers, including our online rate calculator to help customers choose the best rate plan based on their current usage.

We’ve also doubled funding for our voluntary energy efficiency programs designed to help customers eliminate energy waste while saving money on their bills and extended our Arrears Management Program offering to help Wisconsin customers get caught up if they fall behind on their payments.

Building off the success of our first community solar garden in Fond du Lac, we are expanding renewable energy options and developing the Janesville Community Solar Garden.

When will the adjusted rates go into effect?

The adjusted rates go into effect January 1, 2024.

Will my rates go up again the following year?

The PSC approved a two-step adjustment to electric base rates for 2024 and 2025. Natural gas base rates will be adjusted in 2024 and held effectively flat in 2025. Our next rate review will likely be filed in spring 2025 for rate years 2026-2027.

What options do customers have to reduce electric/natural gas bills?

First, we encourage customers to explore energy efficiency improvements that can reduce the amount of energy they use. A list of simple, do-it-yourself cost-saving tips can be found online at alliantenergy.com/waystosave.

Customers, including people with an electric vehicle, might benefit by enrolling in a different rate plan to better match your energy use, such as our Nights and Weekends or Peak Nights and Weekends programs. To explore rate plan options, use our personalized rate calculator at alliantenergy.com/nightsandweekends.

Additionally, we offer several programs to help customers reduce their energy use. Our Smart Hours program is one cost-saving tool available to customers with a smart thermostat. Signing up adds value, convenience and choice to the services we provide. Customers enrolled in Smart Hours receive rewards for participating in the program which reduces energy use at peak times.

To explore options, visit My Account.

What is Alliant Energy doing to manage energy costs?

To manage costs, we continue to operate our system as efficiently as possible. Our investments in new technology, such as our Advanced Distribution Management System (ADMS) and Enterprise Work and Asset Management program (EWAM), will further enhance efficiency and system operations.

Another key component of our long-term plan to manage costs involves our focus on developing zero-fuel-cost generation resources and minimizing risks associated with fuel cost volatility. Following our Clean Energy Blueprint, we are planning for the retirement of older, coal-fired generation facilities. This energy generation will be replaced with cleaner options that further diversify our energy portfolio to ensure reliability and ongoing affordability. 

What specific investments are you making to the energy grid? What are the benefits?

We are focused on strengthening our distribution system to protect against threats, boost energy security and support our customers. This includes:

• Undergrounding distribution lines, which reduces the frequency and duration of outages, decreases long-term operational costs and improves safety.
• Installing an Advanced Distribution Management System (ADMS), which will increase our insights into – and enable – a more dynamic and efficient operation of our energy system. With ADMS, our distribution system operators and dispatchers will have greater access to real time data across our service territory. They will be able to work with more intelligent grid devices and guide field crews in restoring service to customers much faster than we can today.
• Adding battery storage and other value-added resources to improve customer reliability, system resilience, affordability and circuit load management.
• Bolstering our communication technologies by deploying fiber communication. Of all the changes affecting the industry, this investment is one of the most impactful to manage an increasingly complex grid that includes smarter and more distribution-connected devices, such as batteries and electric vehicle chargers. Among other benefits, our fiber communication will increase the robustness and cyber security of our communication system and, in certain areas, replaces aging systems. 

What is a fuel cost plan?

The Public Service Commission of Wisconsin (PSC) requires utilities to file an annual forecasted fuel cost plan which is reviewed by the PSC and used to establish the utility rates for the following calendar year. The PSC annually reviews actual monitored fuel costs for over- or under-collection and may approve bill credits or adjustments to reconcile differences. In Wisconsin, fuel costs are a pass-through, meaning utilities such as Alliant Energy do not profit.

What is the “Fuel Adjustment” on my bill?

In December 2024, the Public Service Commission of Wisconsin (PSC) approved our 2025 Fuel Cost plan (Docket 6680-ER-104). Effective January 1, 2025, a $0.006269/kilowatt-hour (kWh) fuel adjustment surcharge was added to your bill to reflect updated costs and our previously approved 2022 fuel reconciliation adjustment (Docket 6680-FR-2022).

In March 2025, we filed an application with the PSC to reconcile the under-collection of 2024 actual fuel costs. In our filing, we request a fuel adjustment of $0.002942/kWh be applied to applicable customer bills from October 1 to December 31, 2025. If approved, for the average residential customer, this amounts to approximately $2/month for the final three months of 2025.