How does your solar garden grow?

We are investing in more renewable energy. One example is our Madison Solar Demonstration Project in Madison, Wis. It showcases several types of solar structures, multiple electric vehicle charging stations and a battery energy storage system. You’ll find 1,325 solar panels, 30 ground-mounted solar features, nine roof-mounted solar arrays and five solar parking canopies, plus more, on our office property.

In February, we doubled the number of electric vehicle charging stations – from five to 10 – available for public use. We now have a total of 18 chargers on campus. We’ve also increased the capacity of our battery energy storage system by about eight times what it was originally. This will increase our understanding of how this technology works.

The project went into service in early 2016, so we’re now about one year into a three-year collaboration with the Electric Power Research Institute (EPRI). EPRI is helping us study the various solar technologies, manufacturers and battery storage. Our focus also includes a look at how the integration of on-site renewable power sources and energy storage works with the power grid.

You can see real-time performance data on our web-based dashboard. The findings will be used to make decisions for our future solar projects. 

Madison Solar Demonstration Project

  • Produces enough energy to power 55 homes
  • Offsets about 15% of our office’s electric use
  • Powers electric vehicles via 18 charging stations
  • Features two miles of walking paths with solar energy education signage
  • Includes a re-established prairie area with butterfly habitat

Giving you options 

We are listening to customers and creating new energy solutions for your needs. 

  • Electric vehicle charger rebate – To support this growing market, we now offer a rebate of up to $500 for a fast home charging station. 
  • Pricing plans – Wisconsin customers who use most of their electricity on weekends or late at night will save money on Nights and Weekends. Iowa customers have a similar option with the Time of Day rate. 

Second Nature renewable resource mix

Second Nature is sold in blocks of 50 kilowatt-hours (kWh) for non-residential customers or matches 100%, 50% or 25% of your residential electricity usage. This table provides the renewable resource mix in Second Nature in 2016, as well as the projected resource mix in 2017.

2016 Historical / 2017 prospective product content label1
Second NatureTM is sold in blocks of 50 kilowatt-hours (kWh) for non-residential customers or matches 100%, 50% or 25% of your residential electricity usage. This table provides the renewable resource mix in Second Nature in 2016, as well as the projected resource mix in 2017.
 Green-e Energy Eligible New Renewables2 in Second Nature
   2016 - historic  2017 - prospective
  100% Generation Location 100% Generation Location 
Landfill gas 8.53% Janesville, WI  13.50% Janesville, WI 
Solar 1.85%  Wisconsin PgS-Art  1.89%  Wisconsin PgS-Art 
Solar 0.02%  Cedar Rapids, IA  0.02%  Cedar Rapids, IA 
Wind  14.53%  Brownsville, WI 9.79%  Brownsville, WI 
Wind 75.07%  Hancock County, IA  29.28%  Hancock & Winnebago Counties, IA 
Wind     45.52%  Greene County, IA 

1. 2017 prospective figures reflect the renewables that we have contracted to provided. Actual figures may vary according to resource availability. We will annually report to you before August 1 of next year in the form of a historic Product Content Label the actual resource mix of the electricity you purchased. 2016 Historic figures reflect the power delivered to Second Nature's customers in 2016. 

2. New renewables come from generation facilities that first began commercial operation within the past 15 years. For comparison, the current average mix of resources supplying Alliant Energy includes: Coal (36%), Purchased power (44%), Natural gas (15%), Wind (4%) and Other (1%).   (Modified 04/18/2017)

The average home in the United States uses 901 kWh per month. [Source: U.S. EIA 2015]

For specific information about this electricity product, please contact Alliant Energy at 1-800-972-5325 or alliantenergy.com/secondnature.