Net Metering (Iowa)

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Last modified on February 12, 2015.

Rules Regulations Policies Program

Place Iowa
Name Net Metering
Incentive Type Net Metering
Applicable Sector Commercial, Industrial, Residential
Eligible Technologies Biomass, Hydroelectric, Municipal Solid Waste, Photovoltaics, Small Hydroelectric, Wind
Active Incentive Yes
Implementing Sector State/Territory
Energy Category Renewable Energy Incentive Programs
Aggregate Capacity Limit No limit specified
Applicable Utilities Investor-owned utilities

Meter Aggregation Not addressed
Net Excess Generation Credited to customer's next bill at retail rate; carries over indefinitely

REC Ownership Not addressed

System Capacity Limit 500 kW

Date added to DSIRE 2000-01-01
Last DSIRE Review 2013-02-01

References DSIRE[1]


Iowa's statutes do not explicitly authorize the Iowa Utilities Board (IUB) to mandate net metering, but this authority is implicit through the board's enforcement of PURPA and Iowa Code § 476.41 et seq. Iowa's net-metering subrule, adopted by the IUB in July 1984, applies to customers that generate electricity using alternate energy production facilities (AEPs). Net metering is available to all customer classes of Iowa's two investor-owned utilities -- MidAmerican Energy and Interstate Power and Light (IPL).

There is no explicit limit on either the size of a net-metered system or on total enrollment in the IUB's subrule. However, separate rule waivers have allowed MidAmerican Energy and IPL to limit individual systems to 500 kilowatts (kW). Although Iowa's net-metering subrule requires utilities to purchase customers' net excess generation (NEG) at the utility's avoided-cost rate, subsequent rule waivers allow MidAmerican Energy and IPL customers to carry NEG forward for use in future months as a kilowatt-hour (kWh) credit. The net metering kWh offset effectively provides a credit at the customer's retail electricity rate. A detailed description of the Iowa net metering policy background is available here.

Incentive Contact

Contact Name Janet McGurk
Department Iowa Utilities Board
Address 1375 E. Court Avenue
Place Des Moines, Iowa
Zip/Postal Code 50319
Phone (515) 725-7301


Authorities (Please contact the if there are any file problems.)

Authority 1: Iowa Code § 476.41 et seq.

Authority 2: IAC § 199-15.11(5)
Date Enacted 1984-07-27

  • Incentive and policy data are reviewed and approved by the N.C. Solar Center's DSIRE project staff.[1]


  1. 1.0 1.1  "Database of State Incentives for Renewables and Efficiency (DSIRE)"