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New Hampshire Hosting Capacity Map

View hosting capacity by circuit to help select locations for interconnections to Eversource in New Hampshire.

How it Works

If you are a distributed generation contractor or vendor, you can find optimal locations for interconnections to our system using our Hosting Capacity Map. This map details the hosting capacity by circuit.

Each circuit on our system is displayed with a color matching its remaining capacity. Clicking on a circuit will also bring up more detail about the circuit, its remaining capacity and related substation.

This information shows the capacity Eversource’s infrastructure can accommodate, with limited system upgrades, while still reliably and safely delivering electricity to our customers.

Capacity on the circuits and at substations can be increased through project funded upgrades. Small, limited size projects may still be supported without project funded upgrades.

View New Hampshire hosting capacity map

Frequently Asked Questions

What is Hosting Capacity?
Hosting capacity is the estimated maximum amount of power from Distributed Energy Resources (DER, such as solar panels) that can be accommodated on the distribution system at a given location. This capacity is an estimated value under existing grid conditions and operations without requiring significant infrastructure upgrades. This capacity takes into consideration safety, power quality, reliability, and other operational criteria.

What is the difference between Location Hosting Capacity and Bulk Substation Hosting Capacity?
The Bulk Station Hosting Capacity is the estimated amount of DER a substation can accommodate based solely on the station Thermal Capacity, assuming one of the transformers at the substation is offline (either for service or repair). The Location Hosting Capacity is the estimated amount of DER a circuit can accommodate. This can’t exceed the Bulk Substation Hosting Capacity of the circuit’s substation.

My proposed project is larger than the Hosting Capacity. Can my project still be interconnected?
Yes, if the project is willing to fund the necessary upgrades to increase the system Hosting Capacity to accommodate the project. The Hosting Capacity values only reflect an estimation of the maximum amount of DER that can be interconnected with minimal impact to the distribution system. You can still apply for interconnection in this scenario, and a system impact study conducted by Eversource will determine the scope of upgrades required to interconnect the project.

Does the Hosting Capacity consider power flows from alternate circuits?
No. The Hosting Capacity does not consider power flows from alternate circuits. Interconnection of small, limited size projects are not expected to be impacted by power flows from alternate circuits. Impacts of alternate circuits power flows on the interconnection of large projects will be evaluated during the system impact study as applicable.

How do I know if the site has access to a single phase?
All gray lines on the map are single phase. Colors other than gray on the map indicate hosting capacity on three phase circuits.

There is sufficient capacity on a circuit for my project. Do I still need to submit a pre-application/application to interconnect?
Yes. An application is still needed for all size projects (and a Pre-Application only for projects >100kW) to review the project in detail and secure a queue position relative to other applications on the circuit. Depending on the size of the project, a system impact study may still be required. The system impact study is conducted by Eversource and funded by the project.