Grid & off-grid

Net metering calculator, Missouri

Enter your exact usage, system size, and rate details to see how Missouri'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 Missouri's average peak sun hours. Adjust if you know your local figure.
Defaulted to Missouri's current average residential rate. Your utility's actual rate may differ.
Missouri typically credits exports around 100% of retail. Full retail net metering up to 100 kW for residential customers of investor-owned utilities.
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 Missouri 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

Missouri'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 Missouri's current export credit rate costs you compared to full 1:1 retail crediting.

How net metering works in Missouri

Evergy and Ameren Missouri run different programs

Both utilities operate under Missouri's Net Metering and Easy Connection Act, but the actual credit structure differs sharply. Evergy offers true one-to-one net metering at the full retail rate. Ameren Missouri, under its Rider NM tariff, credits exports at a seasonal avoided-cost rate instead, currently 5.39 cents/kWh in summer and 3.92 cents/kWh in winter, settled through an annual true-up rather than full retail crediting.

A one-time meter charge applies at Ameren Missouri

Connecting under Ameren Missouri's net metering tariff requires a bidirectional meter, and customers are billed a one-time charge for it, currently $226 for single-phase service or $169 for three-phase, appearing on the first energy statement after installation. This is separate from any ongoing interconnection or application fees, and Missouri's tax credit and rebate estimator can help offset all of it.

A 2021 law locked the framework in statewide

Senate Bill 564, passed in 2021, protects net metering as a required offering for Missouri's investor-owned utilities, a rule the Missouri Public Service Commission tracks annually, meaning the underlying obligation to offer some form of net metering isn't currently at risk, even though the specific credit rate still varies significantly by provider.

Municipal utilities and cooperatives set their own terms

Beyond Evergy and Ameren Missouri, the state's municipal utilities and rural electric cooperatives are also required to adopt a net metering policy under Missouri law, but each sets its own specific rate and contract terms rather than following Evergy's or Ameren's tariffs directly. See the glossary entry for true-up if that term is new to you. The jargon on this page is worth pinning down. The buy-all sell-all entry in our Glossary explains the term in plain English.

Interconnection and the off-grid comparison

Every Missouri utility runs its own interconnection process, and larger systems face a longer review, so start with a standard interconnection application; the grid interconnection cost estimator prices that step. With at least one Missouri utility still offering full retail crediting, a grid-tied system undercuts an off-grid build by a wide margin; the grid tie vs off grid comparison tool puts a number on that gap.

Questions

Frequently asked

Evergy offers full retail net metering; Ameren Missouri credits exports at a lower seasonal avoided-cost rate instead, 5.39 cents/kWh in summer and 3.92 cents/kWh in winter, settled at an annual true-up rather than full retail.

The average residential rate in Missouri was about 16.2 cents per kWh as of September 2026, per EIA data, up sharply from around 11.8 cents in January. Evergy offers full retail net metering; Ameren Missouri credits exports at a lower seasonal avoided-cost rate instead.

Both utilities operate under the same Missouri Net Metering and Easy Connection Act, but implement it differently. Evergy offers true one-to-one net metering at full retail. Ameren Missouri's Rider NM instead credits exports at a seasonal avoided-cost rate, 5.39 cents/kWh in summer and 3.92 cents/kWh in winter, settled at an annual true-up.

At Ameren Missouri, yes. Customers on the net metering tariff are billed a one-time charge for the required bidirectional meter, currently $226 for single-phase service or $169 for three-phase, which appears on the first energy statement after the meter is installed.

Related tools

Compare Missouri'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