Net Metering (Iowa)
Last modified on February 12, 2015.
Rules Regulations Policies Program
|Incentive Type||Net Metering|
|Applicable Sector||Commercial, Industrial, Residential|
|Eligible Technologies||Biomass, Hydroelectric, Municipal Solid Waste, Photovoltaics, Small Hydroelectric, Wind|
|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
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.
|Contact Name||Janet McGurk|
|Department||Iowa Utilities Board|
|Address||1375 E. Court Avenue|
|Place||Des Moines, Iowa|
|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.