US solar project pipeline awaiting interconnection permit reaches 1.08 TWh

Photovoltaics Markets and Technology

Picture voltaic, wind, and battery storage accounted for virtually 95% of the potential in transmission interconnection queues as of year-end 2023, based on preliminary data from Berkeley Lab, supplied in a employees report from the Federal Energy Regulatory Charge.

By year-end 2023, 1,086 GW of picture voltaic duties awaited transmission interconnection, along with 503 GW of standalone storage, in keeping with preliminary data from Lawrence Berkeley Nationwide Laboratory (LBNL). The amount of storage in hybrid duties, just like solar-plus-storage duties, awaiting interconnection at year-end was estimated at 525 GW by LBNL, based on imputed values for missing data when storage functionality for hybrid duties was not reported.

The data has been reported in a staff report from the Federal Energy Regulatory Charge (FERC).

LBNL’s preliminary values for all nonetheless one in all many helpful useful resource varieties awaiting interconnection are supplied throughout the desk beneath the FERC employee’s report. The exception is hybrid storage, which FERC employees reveal as 299 GW throughout the desk, not LBNL’s preliminary 525 GW, because of FERC employees excluded hybrid storage duties for which functionality was not reported.

Figure 38 from FERC staff report 2024

Picture voltaic, wind, and battery storage represented virtually 95% of the general functionality in interconnection queues as of year-end 2023, the employee’s report acknowledged.

Pending transmission interconnection requests at year-end 2023 rose to 11,841, in keeping with LBNL’s preliminary data, representing a 16% enhancement since year-end 2022 and larger than a four-fold enhancement since year-end 2019, as confirmed throughout the desk beneath.

The FERC employee’s report consists of summaries of transmission plans submitted by grid operators to FERC’s closing 12 months, along with plans for transmission that might help carry picture voltaic and storage duties on-line.

The transmission plan from California grid operator CAISO included 21 transmission duties for $5.5 billion to help meet the renewable period requirements set by state regulators. A couple of of those duties would permit the importing of wind power from exterior CAISO.

Mid-continent grid operator MISO deliberate 142 transmission duties to interconnect new generators.

The PJM grid operator stretching from Chicago to New Jersey “acknowledged” 93 transmission duties for $180 million to help period searching for interconnection, and “evaluated 227 supplemental duties put forward by transmission householders,” the report acknowledged, which will worth $2.4 billion.

The ERCOT grid space in Texas added most likely probably the most picture voltaic of any space closing 12 months, as confirmed throughout the following chart from the report, exhibiting functionality additions by grid space.

The geographic areas of seven of the 9 grid areas referenced throughout the chart are confirmed throughout the map beneath. The alternative two areas are the “SERC space,” which is the SERC Reliability Firm (SERC) area throughout the Southeast, and the “WECC* space,” which is the Western Electrical Vitality Coordinating Council area throughout the Western states with out California’s CAISO space.

RTOs ISOs map from Sustainable FERC Project

The CAISO and ERCOT grid areas account for lots of the event in transmission-connected batteries beforehand three years, as confirmed throughout the following chart from the report. 

Figure 31 of FERC staff report 2024

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