The Robert Moses Power Dam is the U.S. generating facility of NYPA's St. Lawrence–Franklin D. Roosevelt Power Project at Massena, New York. Operated by the New York Power Authority since 1958, it is part of the jointly developed Moses–Saunders Power Dam on the U.S.–Canadian border. NYPA operates the U.S. half of the 32 turbine-generators, comprising 16 generating units with a total capacity of 912 MW.
Canonical EIA plant baseline.
plant-2694
Similar plants ranked by technology, capacity, and distance.
Operating generator records and technology attributes reported through EIA-860.
| Generator | Capacity | Technology | Operation | Status |
|---|---|---|---|---|
| 17 | 57 MW 53.5 MW summer | Conventional Hydroelectric Water · HY | Jul 1959 | Operating |
| 18 | 57 MW 53.5 MW summer | Conventional Hydroelectric Water · HY | Jul 1959 | Operating |
| 19 | 57 MW 53.5 MW summer | Conventional Hydroelectric Water · HY | Jun 1959 | Operating |
| 20 | 57 MW 53.5 MW summer |
Monthly EIA generation history and recent market-resource behavior where linked telemetry is available.
Deterministic links to ERCOT market resources, price records, outage disclosures, queue records, and nearby infrastructure. Candidate joins remain labeled until corroborated.
Source-backed project transactions, agreements, land records, permits, and environmental disclosures. Portfolio and adjacent-project facts remain explicitly scoped.
Parties, market resources, and identifiers tied to this asset, with owner, operator, developer, EPC, compliance provider, and interconnecting entity roles kept separate.
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Project milestones and public references behind the asset profile.
The International Joint Commission granted permits to the New York Power Authority and Ontario Hydro to build a power project spanning the international border.
| May 1959 |
| Operating |
| 21 | 57 MW 53.5 MW summer | Conventional Hydroelectric Water · HY | May 1959 | Operating |
| 22 | 57 MW 53.5 MW summer | Conventional Hydroelectric Water · HY | Mar 1959 | Operating |
| 23 | 57 MW 53.5 MW summer | Conventional Hydroelectric Water · HY | Jan 1959 | Operating |
| 24 | 57 MW 53.5 MW summer | Conventional Hydroelectric Water · HY | Dec 1958 | Operating |
| 25 | 57 MW 53.5 MW summer | Conventional Hydroelectric Water · HY | Nov 1958 | Operating |
| 26 | 57 MW 53.5 MW summer | Conventional Hydroelectric Water · HY | Oct 1958 | Operating |
| 27 | 57 MW 53.5 MW summer | Conventional Hydroelectric Water · HY | Aug 1958 | Operating |
| 28 | 57 MW 53.5 MW summer | Conventional Hydroelectric Water · HY | Aug 1958 | Operating |
| 29 | 57 MW 53.5 MW summer | Conventional Hydroelectric Water · HY | Jul 1958 | Operating |
| 30 | 57 MW 53.5 MW summer | Conventional Hydroelectric Water · HY | Jul 1958 | Operating |
| 31 | 57 MW 53.5 MW summer | Conventional Hydroelectric Water · HY | Jul 1958 | Operating |
| 32 | 57 MW 53.5 MW summer | Conventional Hydroelectric Water · HY | Jul 1958 | Operating |
Monthly generation is reported through EIA-923. Capacity factor uses the current EIA nameplate capacity and is shown only for complete calendar years.
| Largest reported plants | Capacity | State | |
|---|---|---|---|
| Robert Moses Niagara | 2,042.1 MW | NY | |
| Blenheim Gilboa | 1,000 MW | NY | |
| Robert Moses Power DamCurrent | 855 MW | NY | |
| Zeltmann | 528 MW | NY | |
| Lewiston Niagara | 220 MW | NY | |
| Richard M Flynn | 170 MW | NY | |
| Joseph J Seymour Power Project | 94 MW | NY | |
| Vernon Boulevard | 94 MW | NY |
Portfolio membership follows the latest EIA-860 reporting entity. It does not imply ultimate ownership.
View full reporting portfolioAll approvals were in place by 1954, and NYPA and Ontario Hydro began transforming the site into the jointly developed power facility.
The accelerated construction schedule brought the start of electricity production in July 1958. NYPA describes the Robert Moses Power Dam/St. Lawrence-FDR facility as opening in 1958.
EIA-860 lists generator 27, generator 28 with this operating date.
EIA-860 lists generator 26 with this operating date.
EIA-860 lists generator 25 with this operating date.
EIA-860 lists generator 24 with this operating date.
The NYPA historical timeline states that delivery of full power occurred one year after electricity production began, two years ahead of the original schedule.
EIA-860 lists generator 23 with this operating date.
EIA-860 lists generator 22 with this operating date.
EIA-860 lists generator 20, generator 21 with this operating date.
On October 22, 2003, FERC voted to issue NYPA a new 50-year license to continue operating the St. Lawrence-FDR project; NYPA's trustees accepted the license.
In December 2014, New York legislation allowed proceeds from the sale of a block of up to 20 MW of hydropower to support economic development in St. Lawrence County. This concerns power output sales, not a sale of the Robert Moses Power Dam itself.
Answered from the published record above. Questions whose inputs this profile does not carry are omitted rather than estimated.
Robert Moses Power Dam has a reported capacity of 855 MW. Source: EIA Form 860M.
Robert Moses Power Dam is a Conventional Hydroelectric facility in St Lawrence County, NY, participating in the NYISO market.
Robert Moses Power Dam is in St Lawrence County, NY, inside the NYISO balancing area.
Robert Moses Power Dam is operated by New York Power Authority according to the EIA generator inventory. Reporting membership does not by itself establish ultimate ownership.
Robert Moses Power Dam reported 6,735.4 GWh over the twelve months to 2026-06. Figures are net generation as filed to EIA-923.
By capacity, Robert Moses Power Dam ranks #14 of 1,349 operating plants of the same technology nationally. It ranks #2 of 156 in NY.
Plants within 25 km, nearest first, regardless of technology. Proximity is straight-line distance between mapped plant coordinates; it does not by itself establish a shared point of interconnection.
