Missouri Net Metering And Mo Psc Billing Rules Guide

Key Takeaways

• Missouri's Net Metering and Easy Connection Act governs how customer-generators are credited for excess solar energy.
• The scheme typically applies to systems with a capacity of up to 100kW.
• Credits for excess generation are usually based on the utility's avoided cost.
• An annual true-up reconciles accounts, crediting any remaining net excess generation.

Understanding Missouri's Net Metering and Easy Connection Act

Missouri's Net Metering and Easy Connection Act establishes the framework for how customer-generators with renewable energy systems, such as solar panels, connect to the grid and receive credit for the electricity they generate. This act is designed to support the adoption of renewable energy by ensuring fair compensation for excess power fed back into the grid. The Missouri Public Service Commission (MO PSC) oversees the implementation and specific rules of this act.

How Net Metering Works in Missouri

Net metering allows you to send any excess electricity your solar panels produce back to the utility grid. When your system generates more power than your home or business consumes, your electricity metre effectively runs backwards, or a separate export metre records the outgoing power. This excess generation is then credited to your account, offsetting future electricity consumption.

The Missouri Net Metering and Easy Connection Act generally applies to customer-generators with systems up to a 100kW capacity. This capacity limit ensures that the scheme primarily benefits residential and small commercial installations.

Avoided-Cost Credit Calculations

When your solar system exports more electricity than you consume over a billing period, the utility typically credits you for this net excess generation. In Missouri, these credits are often calculated based on the utility's "avoided cost." The avoided cost represents the cost the utility avoids by not having to generate that electricity itself or purchase it from another source.

The specific methodology for calculating avoided-cost credits is determined by the Missouri Public Service Commission. These calculations aim to reflect the economic value of the distributed generation to the utility and its ratepayers.

Annual True-Up Rules

A key component of Missouri's net metering framework is the annual true-up. This process occurs at the end of a 12-month billing cycle. During the true-up, the utility reconciles your account, comparing the total electricity you consumed from the grid against the total excess electricity your system exported.

If, after the entire year, you have a net excess generation (meaning you exported more electricity than you imported), the utility typically compensates you for this remaining balance. This compensation is usually at the avoided-cost rate, as determined by the MO PSC. This ensures that customer-generators are fairly compensated for their contribution to the grid over the long term.

What you can check yourself, and what you cannot

As a homeowner or business owner, you can monitor your solar system's performance and your electricity bills to understand your net metering credits. Many inverters and utility providers offer online portals or apps that display real-time generation and consumption data. You can also review your monthly statements to track your net metering balance and see how the avoided-cost credits are applied.

However, you cannot change the rules or calculation methods for net metering. These are set by the Missouri Public Service Commission and your utility provider. Any issues with your interconnection agreement, metering equipment, or billing discrepancies that cannot be resolved through customer service should be escalated to the MO PSC for guidance. High-voltage DC, AC grid interconnection, and switchgear modifications must be performed by certified, licensed personnel.

What the published sources do not tell you

While the general principles of Missouri's Net Metering and Easy Connection Act, including the 100kW cap, avoided-cost credit calculations, and annual true-up rules, are established by state law and the Missouri Public Service Commission, the specific tariff rates for avoided cost and detailed billing mechanisms can vary between different utility providers within Missouri. These specific details are often found in the individual utility's tariffs and interconnection agreements, which are not universally published in a single, easily accessible document. Therefore, for precise figures and terms, you must consult your specific utility provider's net metering programme details.