Grid & off-grid

Net metering calculator, Oklahoma

Enter your exact usage, system size, and rate details to see how Oklahoma's net metering policy affects your solar bill, with precise controls for season, tiered rates, and fixed fees.

Your numbers

1 Project details Optional
Shown on your exported report. Leave blank to skip.
2 Your usage and system
Find this on a recent utility bill, usually labeled kWh used.
Use your quoted or planned system size. Panel count times panel wattage divided by 1,000 gives a rough figure.
Solar production swings seasonally; pick a specific month type to see how your bill shifts.
Most utilities charge a flat customer or connection fee regardless of usage.
3 Your location and rate
Defaulted to Oklahoma's average peak sun hours. Adjust if you know your local figure.
Defaulted to Oklahoma's current average residential rate. Your utility's actual rate may differ.
Within each month your solar offsets usage at your full rate. Excess beyond that month's usage is paid at the utility's avoided energy cost, typically a few cents per kWh, roughly 30% of a typical Oklahoma rate.
Some utilities charge progressively higher per-kWh rates as monthly usage climbs into higher tiers.
Accounts for inverter loss, wiring loss, dust, and temperature derate combined.
Informational only. A monthly cycle means unused export credit does not carry to the next bill; annual and rolling cycles do.

How it works

Three steps to your Oklahoma solar bill estimate

Step 1

Enter your usage, system size, and season

Pull your monthly kWh from a recent bill and enter your planned or quoted system size in kW. If you only know your panel count, multiply it by each panel's wattage and divide by 1,000 to get a kW figure first. Select a season to model a specific month rather than only an annual average.

Step 2

Confirm your rate, tier, and export credit

Oklahoma's typical residential rate and export credit level are filled in by default. Swap in your utility's actual tariff numbers, tier bracket, and fixed monthly fee if you have a recent bill or interconnection agreement showing them.

Step 3

Compare the result to a full retail scenario

Run the net billing vs net metering comparison tool to see exactly how much Oklahoma's current export credit rate costs you compared to full 1:1 retail crediting.

How net metering works in Oklahoma

The OCC's rule covers regulated utilities and cooperatives

The Oklahoma Corporation Commission requires net metering from the utilities and regulated electric cooperatives it oversees, including Oklahoma Gas & Electric (OG&E) and Public Service Company of Oklahoma (PSO, an AEP subsidiary), for systems up to 300 kW. Municipal utilities and other systems the commission doesn't regulate set their own policies, so if one serves your address, check its specific rules directly.

Within the month, your solar offsets usage at the full retail rate

OG&E's net metering program bills monthly. Your solar output first offsets what you consume at your location during the billing period, and you pay your normal tariff only on the net usage that remains. That netting is worth the full retail rate, but only up to your consumption for that period. The Senate Bill 1456 keeps the current program details, and it is worth a look before you decide.

Monthly excess is paid at avoided cost, not carried forward at retail

Any energy your system produces beyond what you consume in the billing period is purchased at the utility's avoided energy cost and paid or credited on your next bill. OG&E's tariff ties that rate to wholesale Southwest Power Pool prices, set separately for on-peak and off-peak hours, so it varies and typically runs only a few cents per kWh, far below the retail rate the same energy would have offset. This rewards sizing a system to match your monthly usage rather than deliberately overproducing; Oklahoma's tax credit and rebate estimator can help you see what improves that math.

State law allows a fixed charge on solar customers

Senate Bill 1456, signed in 2014 and effective November 2015, lets utilities ask the Corporation Commission to approve a fixed charge on distributed generation customers. The governor's executive order interpreting the law says the Commission may weigh alternatives such as minimum bills, demand charges, and time-of-use rates first, so check with your utility whether any such charge applies to you before installing.

Interconnection and the off-grid comparison

Whether you're with OG&E or PSO, connecting a system requires a standard interconnection application, and the grid interconnection cost estimator covers what to expect there. With Oklahoma's relatively low electricity rates, self-consumption already captures most of the value, and the grid tie vs off grid comparison tool shows why staying grid-tied still beats going fully off-grid even though excess is paid only at avoided cost.

Questions

Frequently asked

Within each billing month, your solar offsets your usage at the full retail rate, about 14.4 cents/kWh. Any energy beyond what you consume that month is purchased at the utility's avoided energy cost, typically a few cents per kWh, and paid or credited on your next bill.

The average residential rate in Oklahoma was about 14.4 cents per kWh as of July 2026, per EIA data. Your solar offsets usage at that full rate within each billing month, while any excess is paid at the utility's avoided energy cost.

Both, depending on what the energy offsets. Solar output you use during the billing period offsets your usage at the full retail rate, up to your consumption. Anything beyond that is purchased at the utility's avoided energy cost and paid or credited on your next bill, with no year-end settlement at retail value.

It depends on your utility. Senate Bill 1456, signed in 2014 and effective November 2015, lets utilities ask the Corporation Commission to approve a fixed charge on distributed generation customers, so check with your utility whether any such charge applies to you before installing.

Related tools

Compare Oklahoma's policy to other structures

Grid tie vs off grid comparison Net billing vs net metering Buy all sell all vs net metering Avoided cost rate calculator Grid export cap calculator Grid interconnection cost estimator Grid tie with battery backup comparison All grid and off-grid tools