Robert Moses Power Dam
New York Power Authority - St Lawrence County - NYISO
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.
Overview
Key fields
- Nameplate capacity
- 855 MW
Canonical EIA plant baseline.
- Registry anchor
- Plant 2694
plant-2694
Structured profile
- Technology
- Conventional Hydroelectric
- Operator
- New York Power Authority
Units and generators
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 | Conventional Hydroelectric Water · HY | 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 |
Performance
Monthly EIA generation history and recent market-resource behavior where linked telemetry is available.
Peer context
- Technology capacity
- 912 MW
- National rank
- #14
- NY rank
- #2
Monthly generation
Download CSVMonthly generation is reported through EIA-923. Capacity factor uses the current EIA nameplate capacity and is shown only for complete calendar years.
Grid and market context
Deterministic links to ERCOT market resources, price records, outage disclosures, queue records, and nearby infrastructure. Candidate joins remain labeled until corroborated.
Nearby substations
HIFLD infrastructure inventoryCommercial, land, and environmental record
Source-backed project transactions, agreements, land records, permits, and environmental disclosures. Portfolio and adjacent-project facts remain explicitly scoped.
Transactions and agreements
Related parties and identifiers
Parties, market resources, and identifiers tied to this asset, with owner, operator, developer, EPC, compliance provider, and interconnecting entity roles kept separate.
Relationship graph
Drag organizations to explore the network. Select a node to pin its details and available page link.
Parties and identifiers
| Relationship | Entity | Basis |
|---|---|---|
| Owner / operator | Owner and operator of the U.S. facility | |
| Operator | Ontario Hydro / Ontario Power Generation | Co-developer and operator of the Canadian half of the jointly operated dam |
| Equipment supplier | Alstom Hydro | Manufacturer of replacement turbines |
| Grid selection | plant:plant-2694 | Canonical asset page /nyiso/assets/plant/robert-moses-power-dam. |
Reporting portfolio
| 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 portfolioTimeline and sources
Project milestones and public references behind the asset profile.
Project timeline
- International permits granted for binational projectnypa.gov
The International Joint Commission granted permits to the New York Power Authority and Ontario Hydro to build a power project spanning the international border.
- Construction approvals and commencementnypa.gov
All approvals were in place by 1954, and NYPA and Ontario Hydro began transforming the site into the jointly developed power facility.
- First Electricity Productionnypa.gov
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.
- Generators enter operationEIA-860
EIA-860 lists generator 27, generator 28 with this operating date.
- Generator enters operationEIA-860
EIA-860 lists generator 26 with this operating date.
- Generator enters operationEIA-860
EIA-860 lists generator 25 with this operating date.
- Generator enters operationEIA-860
EIA-860 lists generator 24 with this operating date.
- Full-Power Operationnypa.gov
The NYPA historical timeline states that delivery of full power occurred one year after electricity production began, two years ahead of the original schedule.
- Generator enters operationEIA-860
EIA-860 lists generator 23 with this operating date.
- Generator enters operationEIA-860
EIA-860 lists generator 22 with this operating date.
- Generators enter operationEIA-860
EIA-860 lists generator 20, generator 21 with this operating date.
- Federal Relicensingnypa.gov
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.
- Hydropower-Sale Legislationnypa.gov
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.
Sources
Common questions about Robert Moses Power Dam
Answered from the published record above. Questions whose inputs this profile does not carry are omitted rather than estimated.
How big is Robert Moses Power Dam?
Robert Moses Power Dam has a reported capacity of 855 MW. Source: EIA Form 860M.
What kind of plant is Robert Moses Power Dam?
Robert Moses Power Dam is a Conventional Hydroelectric facility in St Lawrence County, NY, participating in the NYISO market.
Where is Robert Moses Power Dam located?
Robert Moses Power Dam is in St Lawrence County, NY, inside the NYISO balancing area.
Who operates Robert Moses Power Dam?
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.
How much electricity does Robert Moses Power Dam generate?
Robert Moses Power Dam reported 6,655.6 GWh over the twelve months to 2026-04. Figures are net generation as filed to EIA-923.
How does Robert Moses Power Dam compare to other plants?
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.
Co-located assets
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.
Related assets
Similar plants ranked by technology, capacity, and distance.
Blenheim Gilboa
Hydroelectric · 1,000 MW
Schoharie County
Robert Moses Niagara
Hydroelectric · 2,429.1 MW
Niagara County