As reported by sister site PV-tech, the majority of this cumulative capacity came from solar technology.
However, in July this year, the NYPA published a draft update for its plan that massively upped its energy storage ambitions by proposing an additional 156 projects representing a cumulative storage capacity exceeding 3.8GW. Alongside the storage additions, NYPA proposed another 20 new renewable generation projects, taking the total cumulative capacity to almost 7GW.
Driscoll said that he was “proud” of the draft plan, which was produced during the height of uncertainties surrounding investment tax credits and increasing import tariffs.
7GW down to 5.5GW, 500MW development with Hydrostor
Despite energy storage developments remaining mostly intact, the final plan approved last week comprises a reduced approximate 5.5GW of cumulative capacity, compared to the 7GW of the draft plan.
NYPA said the reduction in cumulative capacity was down to the elimination of investment tax credits for solar and wind projects, along with the results of interconnection studies. Coupled with tax credits for energy storage remaining until 2033, these changes aren’t too surprising.
The approved plan reduces the number of energy storage projects from 156 to 149, comprising 146 distribution-connected projects across three separate portfolios, as well as three individual utility-scale projects.
Most notably of the new additions, NYPA is jointly developing a 500MW compressed-air energy storage system with Hydrostor in Lewis County connecting to the New York System Operator (NYISO’s) K load zone.
The project, known as Antelope Energy Storage, is expected to be assessed by the system operator as part of its 2026 cluster study, with NYPA targeting commercial operations during the final quarter of 2030.
Headquartered in Toronto, Canada, Hydrostor has developed its own proprietary advanced-compressed air energy storage (A-CAES) technology.
As recently reported by Energy-Storage.news, an offtake agreement relating to one of Hydrostor’s California developments was recently amended for the third time due to “permitting and interconnection challenges.”
Although the city of Croghan, which expects to host the Antelope project, has recently amended its zoning laws to regulate compressed air energy storage technology, it has yet to receive any development applications.
Details of the other two utility-scale storage projects within NYPA’s revised plan are as follows:
| Project Name | Co-developer | Location | Capacity (MWac) | Estimated completion date |
| H1 | Oriden | Deerpark, Orange County | 10 | Q4 2027 |
| K4 | YSG Solar | Brookhaven, Suffolk County | 4 | Q3 2026 |
Both projects were included in the inaugural plan, with NYPA stating that no major updates have occurred since then.
Portfolio developments
In terms of distribution-connected storage, the updated plan includes three new portfolios which NYPA is separately co-developing with two developers: New Leaf Energy and Orenda, who are responsible for one and two portfolios, respectively.
Broad details of the portfolios, which are all being developed under NYPA’s Renewable Energy Access and Community Help (REACH) program, can be found below:
| Project Names | Co-developer | Number of projects | Cumulative Capacity (MWac) | Capacity Range (MWac) | Online date range |
| R6.1 – R6.4, R6.11, R6.12 | New Leaf Energy | 6 | 28 | 3 – 5 | Q2 2027 – Q2 2029 |
| S1.1 – S1.75 | Orenda | 75 | 353.94 | 2.88 – 4.88 | Q3 2027 – Q1 2030 |
| S2.1 – S2.65 | Orenda | 65 | 318.24 | 4.896 | Q1 2028 – Q2 2030 |
Further details of the portfolios can be accessed in the appendix of NYPA’s revised renewables plan. Interestingly, 145 of the 149 energy storage projects are slated for development in New York City and Westchester County.
Within its renewed plan, NYPA noted that it was prioritising projects that can be developed expeditiously, and that “strong federal headwinds” presented “significant challenges” for the future buildout of renewable generation.
The Energy Storage Summit USA will be held from 24-25 March 2026, in Dallas, TX. It features keynote speeches and panel discussions on topics like FEOC challenges, power demand forecasting, and managing the BESS supply chain. For complete information, visit the Energy Storage Summit USA website.
