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Distributed Generation Forecast Working Group requests survey data for 2019 forecast

ISO New England is calling for solar photovoltaic (PV) interconnection survey data from distribution owners for its 2019 distributed generation forecast, as announced at the December 10, 2018, meeting of the Distributed Generation Forecast Working Group (DGFWG). Survey data for all of 2018 must be sent to ddfwgsurvey@iso-ne.com by January 22, 2019. Here are other key milestones for the 2019 DG forecast:

What is DG?

Distributed generation includes the relatively small (≤5 megawatt) generation units connected directly to retail distribution or customer facilities, not the bulk power system. They can include PV panels—the largest component of DG—as well as small wind farms, biomass facilities, battery storage units, and other small sources. The amount of DG in the region can affect long-term system planning, such as by reducing the amount of capacity the system must have three years in the future and by eliminating the need to install new transmission or distribution facilities. It can also affect system operations, such as by reducing peak demand on sunny days.

How levels are estimated

To estimate the level of distributed generation in New England, the ISO—with input by stakeholders participating in the DGFWG, including state policymakers, DG program administrators, and distribution companies—develops an annual DG forecast.

DGFWG December 10, 2018, meetingThis forecast accounts for the state policies providing incentives to invest in these facilities and stimulate DG growth. While the DG measures vary in each state, they include rebates, grants, and tax credits; residential solar investment programs and renewable energy funding; zero- and low-emissions renewable energy credits; Renewable Portfolio Standards; “clean energy” pilot programs; net metering and billing; and other policies.

December check-in

At the December 10 meeting, representatives from each New England state presented updates on their programs and pending changes that may affect the amount of DG developed in their states and thus the 2019 DG forecast. Also at the meeting, the ISO presented mid-year DG survey results, including the total PV capacity installed in the region as of August 2018: