We offer specialized annual webinars to communities we serve, as well as to our commercial and industrial customers. The most recent webinars are posted below.
Community Energy Cost Outlook Webinar (Video)
December 2025
Commercial and Industrial Customer Energy Cost Outlook Webinar (Video)
December 2025
This information was last updated in December 2025.
New natural gas base rates were implemented in October 2024 and cover the cost of necessary improvements we make to deliver natural gas to our customers. This includes replacing aging materials, installing new inspection and safety equipment, and upgrading existing pipelines for more reliable and expanded service. See where these line items appear by expanding "Guides to understanding your bill" above.
The cost to procure natural gas for our customers is a direct pass-through to customers and generally makes up more than half of a customer’s monthly bill.
We take action throughout the year to help stabilize the price customers pay for natural gas and minimize the impact on bills. For example, we buy and store some natural gas in the summer when the prices are lower. This contracted storage is then withdrawn and used when prices are typically higher.
On average, we are forecasting natural gas bills will increase slightly over the full year in 2026, when compared to 2025 due to anticipated higher gas prices. Individual months will vary.
Natural gas tariffs
New electric rates were implemented in October 2024. While base rates are not changing, overall, electric bills in 2026 are forecasted to increase as compared to 2025 for residential general service, large general service and high load factor customers. These changes are driven by the following factors:
Overview: This is an overall look at the “total amount due” portion of your bill. While the per kWh cost of your bill is the same as others in your class, the energy you use fluctuates and has the largest impact on your bill. If you add a new, more efficient appliance or upgrade to a high efficiency cooling unit, these changes will likely have a positive impact your total bill.
Below, you’ll find details on each element of your bill and how they may change in the future.
⇑ Future outlook: As part of the rate review settlement in 2024, we agreed to a five-year base rate moratorium which keeps base rates stable until at least late-2029. The Energy Adjustment Clause is forecasted to decrease, on average, for 2026. The Regional Transmission Rider is expected to increase in 2026.
These charges can only be changed as part of a rate proceeding before the Iowa Utilities Commission. Following our rate review settlement in 2024, we agreed to a five-year base rate moratorium through which keeps base rates stable until at least late-2029.
Overview: This is the fixed charge for each customer to connect their home or business to our system and to maintain the meter and connection.
Cost: Currently, this charge is:
Residential: $0.5096/day or about $15.50 per month.
General service: $0.7562/day or about $23 per month.
⇑ Future outlook: This charge increased in October 2024 as part of the rate review, however, they remained flat in 2025 and will remain flat again in 2026, as a result of the five-year moratorium.
Overview: This is the cost per kWh of energy used at your home or business. If you look at your meter, the number displayed is a count of the kWh your home or business uses.
This rate adjusts based on the season. Because the electrical grid must be more robust to handle the demands of summer usage, the rates increase between June 1 and August 31, when demands on our energy grid are more significant.
Cost: There are many details and options for rates for residential, general service and large general service customers. These options and rate details are highlighted in our online tariffs.
⇑ Future outlook: This charge increased in October 2024 as part of the rate review. However, they remained flat in 2025 and will remain flat again in 2026, as a result of the five-year moratorium.
These charges can be updated more frequently than base rate components and do not require a rate proceeding before the Iowa Utilities Commission.
Overview: While several charges and credits flow through this line on your bill, the main component is the cost of fuel to produce energy, or the cost to purchase energy for customers.
Cost: The cost is updated and tracked online each month. This also provides visibility to the items that make up our energy costs.
⇓ Future outlook: This charge is updated monthly. Overall, this line item is expected to decrease, on average, in 2026.
Overview: Transmission service is provided to our customers by a third-party provider. This provider’s rates are based upon annual filings with the Federal Energy Regulatory Commission (FERC). Alliant Energy participates in FERC filings on behalf of our customers.
Cost: Transmission charges for all price codes are available in our online tariff document.
⇑ Future outlook: Our transmission provider updates its rates annually. Transmission costs are expected to increase in 2026 due to our transmission provider’s ongoing investments in the transmission system, ensuring reliability for customers.
Learn more about the Regional Transmission Service Charge
Overview: We offer numerous programs to help customers reduce energy use. This charge covers the costs to deliver energy efficiency plans. The charge is adjusted annually and is based on your energy use.
Cost per customer class:
⟺ Future outlook: This charge is expected to remain steady.
Overview: This program provides a discount to customers who, in return, are willing to reduce their energy usage during times of high energy demand. Demand response programs are designed to lower the costs for all customers by reducing the amount of power that must be purchased on very hot days, when the price and demand are the highest. It also reduces the need for new power generation.
Cost per customer class:
⟺ Future outlook: This charge is expected to remain steady.
Overview: Depending on your community, you may have a franchise fee or local option sales tax added to your bill. You cannot have both on your bill. This charge is requested by your community. Alliant Energy collects the fee and provides it to the community.
Cost: This amount varies from 0-5%, based on decisions made by your local city council. Please contact your city clerk to learn more.
Future outlook (varies): This charge is determined by your local community.
Those interested in looking at past cost data can reference the tables below with annual total bill costs by customer class. Customers can visit My Account to see their individual usage.
