Spokesman Geoff Greenwood says the plan includes a range of options for home owners, even for those who already own energy-efficient furnaces and water heaters.
"Perhaps, you could use some weather-stripping at your house, or perhaps you can enroll in our summer saver program which gets you a rebate at the end of the summer if we can help control air conditioning during the hottest times of the summer."
Smart thermostats are another alternative.
MidAmerican would also offer incentives for energy efficient home construction.
"By investing in energy efficiency there is an upfront cost, but there'll be a big payback, a long-term payback. So for every dollar you spend you will be reaping more than a dollar's worth of value out of that investment."
MidAmerican's five year plan for Iowa customers is for 2024 through 2028, with a goal of achieving net-zero greenhouse gas emissions by 2050.
A similar plan for Illinois will be announced later this year.