Second Nature is a voluntary program.
Electric customers can choose to purchase electricity from renewable resources.
Customer choices will affect the amount of renewable energy purchased by the company. Customers can participate in the Second Nature program on three levels. Each level corresponds to the amount of renewable energy that Alliant Energy will purchase in proportion to the amount a home uses. For example, participation at the 50 percent level ensures that the company will buy an amount of renewable energy equal to one-half of all the energy used in that home. According to Zuhlke, these types of renewable programs reduce reliance on limited resources like coal and natural gas, with long-lasting positive environmental effects.