How Does Solar Work?

Net metering and interconnection standards provide the foundation for the on-site generation of electricity in homes or businesses. Electricity generated at or near its point of use is referred to as distributed generation (DG).  DG can complement base-load generation, which refers to the traditional generation of electricity by large-scale utility power plants. The viability of DG systems is dependent upon access to the electric grid (interconnection rules) and fair utility billing terms (net metering).

Net metering allows for the electric grid to act as virtual storage by requiring that utilities bill customers only for the net electricity used during each billing period. For example, if a customer has a PV system on their home, they may generate more electricity than they use during daylight hours. In that case, if their home is net metered their electricity meter will run backwards. At night – when they are using electricity – their meter runs forward as normal. Interconnection standards are the technical and legal procedures for a customer with a DG system to physically connect to the grid.

What is Simple Interconnection?

Simple interconnection ensures that a utility customer can connect a solar electric system to the grid in a safe, fast, and cost-effective way.

  • All Missouri utilities must allow interconnection
  • All Missouri utilities must provide a simple form for a client to apply for interconnection
  • Utilities must respond to requests for interconnection quikly (within 30 days for systems 10kW and within 90 days for systems between 10kW and 100kW).

Additional information regarding Net Metering & Simple Interconnection

  • Normally systems are installed by qualified renewable energy technicians.  For a List of MOSEIA solar installers click here.  Systems must be approved by the utility before interconnecting (this does not apply if system is battery based and totally off-grid).
  • Full retail credit is granted only up to usage during a month; any generation contributed to the grid above monthly usage is credited at a utility’s wholesalerate (generally 20% or so of retail).
  • Utilities never “pay customers” for their electricity.  The utility simply issue a credit on their monthly statement

For clarifications regarding net metering consult your local utility directly.