There are four levels of applications. In general, almost all residential generator applications will be Level 1, but some small industrial and commercial generator applications may also fall under Level 1.

For the most part, Levels 2, 3 and 4 generator applications involve either industrial or commercial applications.

Determine the level of application from the descriptions below and click on the link provided after each description to continue with the application process.

Level 1 <10 kW Expedited Review - These systems are inverter-based and must be tested to Institute of Electrical and Electronic Engineers (IEEE) and Underwriters Laboratory (UL) standards by a nationally recognized test laboratory. Household photo voltaic systems are an example of the type of small generator equipment that is expected to qualify for Level 1 expedited review. Continue with Level 1 application process >

Level 2 - 10 kW to 2,000 kW Expedited Review - These systems must use equipment approved by a nationally recognized testing laboratory or must have been previously approved by an electric utility under a study process. Systems in this size range do not have to be inverter-based and are expected to use a variety of technologies including photo voltaics, reciprocating engines, micro turbines, fuel cells, small wind generators, and combined heat and power units. Level 2 procedures also provide for the interconnection of systems less than 50kW to area networks. Continue with Level 2 application process >

Level 3 - 10 kW to 10,000 kW Expedited Review - These systems qualify for expedited review if they use special equipment to ensure they will not export power from the customer premises on to the electric distribution system. The vast majority of small generators that qualify for review under this category are expected to be standby generator facilities that interconnect at distribution system voltages and operate in parallel for more than 100 milliseconds. Net metered small generators are not eligible for a Level 3 review. Continue with Level 3 application process >

Level 4 - 2,000 kW to 10,000 kW Study Process - Small generators that do not qualify for expedited review or have not been accepted under an expedited review already conducted will be evaluated under the procedures outlined in this category. Because the small generators in this category are expected to be larger and will use application-specific interconnection equipment, a more in-depth evaluation of the potential impacts of the small generator on the electric distribution system is necessary. For this reason, reviews conducted under a Level 4 application are more involved and will take more time. Continue with Level 4 application process >