Jump to main content or area navigation.

Contact Us

Combined Heat and Power Partnership

Ohio Interconnection Standards

Date Last Updated11/16/2012
Policy TypeInterconnection Standard
State/FederalOH
Policy Administrator/Contact OfficePublic Utilities Commission of Ohio (PUCO)
Policy Initiation Date10/22/2007
Policy SummaryThe PUCO has adopted interconnection standards for distributed generation (DG), including CHP. Ohio's interconnection standards provide for three levels of review for the interconnection of DG including CHP systems <20 MW, which apply to customers of the State's investor-owned utilities. There are three main levels of interconnection:
  • Level 1: applies to small systems and is divided into three subsections:
    (a) Level 1 is a simplified review process for inverter-based systems <10 kW that are renewably fueled.
    (b) Level 1.1 is a simplified review process for inverter-based systems <10 kW that are located on the load side of an area network.
    (c) Level 1.2 is a simplified review process for systems <50 kW that are interconnected to an area network.
  • Level 2: applies to certified, inverter-based or synchronous systems <2 MW. This level represents an expedited review procedure where the technical screens, fees, and timelines are detailed in the rule. An external disconnect switch is required.
  • Level 3: applies to inverter-based or synchronous systems <20 MW that do not qualify for Level 1 or Level 2 certification. The technical screens, fees, and timelines are detailed in the rules and an external disconnect switch is required.
All systems must meet IEEE 1547 and UL 1741 standards and may not be interconnected at the transmission level. Each utility must designate an employee or office to handle interconnection application requests. Utilities may not require additional liability insurance beyond proof of insurance. The rules include a provision for alternative dispute resolution, and for formal complaints brought by applicants and interconnected customers.
CHP Eligibility RequirementsBoth fossil-fueled and renewably-fueled CHP systems are eligible for standardized interconnection.
Eligible Project Size (MW)Standardized interconnection applies to systems <20 MW.
Resource Website(s)

Top of page

Jump to main content.