Combined Heat and Power Partnership
Virginia Interconnection Standards
|Date Last Updated||11/16/2012|
|Policy Type||Interconnection Standard|
|Policy Administrator/Contact Office||Virginia State Corporation Commission (SCC)|
|Policy Initiation Date||1/1/1999|
|Policy Summary||Virginia has interconnection standards for systems including CHP distinguished into two separate sets of rules: one for net-metered systems and another for systems that are not net-metered.|
Net-Metered Systems: Virginia's first set of interconnection standards apply to residential net-metered systems <20 kW and commercial net-metered systems <500 kW (or greater if the utility's net metering tariff specifies a higher capacity limit for commercial systems). Net-metered systems that comply with national safety standards such as NEC, IEEE, and UL do not need to install additional safety equipment. However, utilities may require their customers to install a manual, external disconnect switch.
Customer-generators must notify the electric distribution company and the energy service provider prior to interconnecting; the minimum advance-notice requirement depends on system size. Customer-generators may be required to pay up to $50 for an inverter inspection for inverter-based systems. In addition, customer-generators with systems greater than 25 kW in capacity must reimburse the utility for its cost to modify any facilities needed to accommodate the interconnection with respect to power quality, voltage regulation and transformer loading.
Systems <10 kW must have at least $100,000 in liability insurance, and customers with systems >10 kW must have at least $300,000 in liability insurance.
Non-Net-Metered Systems: These rules apply to all electric utilities in the state: IOUs, MOUs, and electric cooperatives. The rules are based on the Federal Energy Regulatory Commission (FERC) Small Generator Interconnection Procedure (SGIP). There are three tiers of interconnection standards, applying to systems <20 MW:
Interconnection requests that include multiple energy production devices located on one site with a single point of interconnection will be evaluated on the aggregate capacity of all systems. Interconnection request for systems wishing to increase capacity shall be evaluated on total new capacity.
Insurance requirements vary depending on the size of the generator facility. Facilities with rated capacity <10 kW must carry liability insurance of at least $100,000 per occurrence. Facilities with rated capacity >10 kW but <500 kW must carry liability insurance with coverage of at least $300,000 for each occurrence. Facilities with rated capacity >500 kW but <2 MW must carry liability insurance with coverage of at least $2 million per occurrence. Insurance coverage for facilities with rated capacity >2 MW will be determined on a case-by-case basis, depending on the size of the installation and potential risk of system damage.
It is the utility's discretion whether to require an external disconnect switch. In addition, Virginia's interconnection standards for non-net metered systems stipulate a dispute resolution process. The parties involved in the dispute may choose one of two options: they may seek assistance from the SCC's Division of Energy Regulation, or they may seek third-party assistance. If these attempts are unsuccessful at resolving the dispute, the parties may file a formal complaint with the SCC.
|CHP Eligibility Requirements||Only renewably-fueled CHP systems are eligible for standardized interconnection.|
|Eligible Project Size (MW)||Standardized interconnection applies to systems <20 MW.|