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ALPHA GENERATION

Reliable Energy
Now and Always

Alpha Generation

Alpha Generation owns and operates power generation facilities that are well positioned to provide reliable, secure, safe, and sustainable sources of power and meet the growing infrastructure needs created by electrification. This diverse portfolio of assets is owned by funds managed by ArcLight Capital Partners, LLC, a leading middle-market, value added infrastructure investment firm with strategic partnerships and investments across the power, renewables, strategic gas, battery storage, and transformative infrastructure sectors.

Our Locations

LOCATIONS

Alpha Generation owns and/or operates 26 generation facilities across the United States.

Select a location to learn more.

arthur-king

Arthur Kill

Location:
Staten Island, NY

Capacity:
878 MW

Fuel Type(s):
Gas/Oil

ISO/RTO:
NYISO

ArcLight Portfolio Company:
Generation Bridge

Astoria

Astoria

Location:
Queens, NY

Capacity:
935 MW

Fuel Type(s):
Natural Gas/Oil

ISO/RTO:
NYISO

ArcLight Portfolio Company:
Eastern Generation

Bergen

Bergen (1 & 2)

Location:
Ridgefield, NJ

Capacity:
1,245 MW (combined)

Fuel Type(s):
Natural Gas, Oil

ISO/RTO:
NYISO

ArcLight Portfolio Company:
Parkway Generation

Bethlehem

Bethlehem

Location:
Bethlehem, New York

Commercial Operation Date:
2005

Capacity:
900 MW

Fuel Type(s):
Natural Gas

ISO/RTO:
NYISO

ArcLight Portfolio Company:
Generation Bridge

Brandywine

Brandywine

Location:
Brandywine, MD

Commercial Operation Date:
1996

Capacity:
290 MW

Fuel Type(s):
Natural Gas

ArcLight Portfolio Company:
Alpha Generation

Bridgeport

Bridgeport

Location:
Bridgeport, CT

Commercial Operation Date:
2022

Capacity:
500 MW

Fuel Type(s):
Natural Gas/Oil

ISO/RTO:
ISO-NE

ArcLight Portfolio Company:
Generation Bridge

Burlington

Burlington

Location:
Burlington, NJ

Capacity:
168 MW

Fuel Type(s):
Natural Gas

ISO/RTO:
PJM

ArcLight Portfolio Company:
Parkway Generation

ct-jets

CT Jets

Location:
Greenwich, Torrington, Branford, Cos Cob, CT

Commercial Operation Date:
2021

Capacity:
167 MW

Fuel Type(s):
ULSK

ISO/RTO:
ISO-NE

ArcLight Portfolio Company:
Generation Bridge

Devon

Location:
Milford, CT

Commercial Operation Date:
2021

Capacity:
175 MW

Fuel Type(s):
ULSK, Natural Gas

ISO/RTO:
ISO-NE

ArcLight Portfolio Company:
Generation Bridge

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Gowanus

Location:
Brooklyn, NY

Commercial Operation Date:
1971

Capacity:
640 MW

Fuel Type(s):
Natural Gas/Oil

ISO/RTO:
NYISO

ArcLight Portfolio Company:
Eastern Generation

Kearny

Kearny

Location:
South Kearny, NJ

Capacity:
456 MW

Fuel Type(s):
Natural Gas

ISO/RTO:
PJM

ArcLight Portfolio Company:
Parkway Generation

Kleen

Kleen

Location:
Middletown, CT

Commercial Operation Date:
2011

Capacity:
620 MW

Fuel Type(s):
Natural Gas

ISO/RTO:
ISO-NE

ArcLight Portfolio Company:
Alpha Generation

Linden

Linden (CC/CT)

Location:
Linden, NJ

Capacity:
1,639 MW (combined)

Fuel Type(s):
Natural Gas

ISO/RTO:
PJM

ArcLight Portfolio Company:
Parkway Generation

long-beach

Long Beach

Location:
Long Beach, CA

Commercial Operation Date:
1976 COD
2007 Repower

Capacity:
252 MW

Fuel Type(s):
Natural Gas

ISO/RTO:
CAISO

ArcLight Portfolio Company:
Generation Bridge

LEC-aerial-3_web

Lordstown

Location:
Lordstown, Ohio

Commercial Operation Date:
October 2018

Capacity:
940 MW

Fuel Type(s):
Natural Gas

ISO/RTO:
PJM

ArcLight Portfolio Company:
Lordstown

middletown

Middletown, CT

Location:
Middletown, CT

Commercial Operation Date:
2021

Capacity:
762 MW

Fuel Type(s):
Natural Gas/Oil/ULSK

ISO/RTO:
ISO-NE

ArcLight Portfolio Company:
Generation Bridge

middletonOH

Middletown, OH

Location:
Butler Count, Ohio

Capacity:
483 MW

Fuel Type(s):
Natural Gas

ISO/RTO:
PJM

ArcLight Portfolio Company:
Parkway Generation

Montville

Location:
Uncasville, CT

Commercial Operation Date:
2001

Capacity:
500 MW

Fuel Type(s):
Natural Gas/Oil/Diesel

ISO/RTO:
ISO-NE

ArcLight Portfolio Company:
Generation Bridge

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Narrows

Location:
Brooklyn, NY

Commercial Operation Date:
1972

Capacity:
322 MW

Fuel Type(s):
Natural Gas/Oil

ISO/RTO:
NYISO

ArcLight Portfolio Company:
Eastern Generation

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New Haven Harbor

Location:
New Haven, CT

Commercial Operation Date:
2022

Capacity:
435 MW, 140 MW

Fuel Type(s):
Natural Gas/Oil

ISO/RTO:
ISO-NE

ArcLight Portfolio Company:
Generation Bridge

Oswego

Location:
Oswego, NY

Commercial Operation Date:
2021

Capacity:
1,641 MW

Fuel Type(s):
Oil

ISO/RTO:
NYISO

ArcLight Portfolio Company:
Generation Bridge

Keys

Keys

Location:
Brandywine, MD

Capacity:
761 MW

Fuel Type(s):
Natural Gas

ISO/RTO:
PJM

ArcLight Portfolio Company:
Parkway Generation

Sewaren

Sewaren

Location:
Woodbridge, NJ

Capacity:
538 MW

Fuel Type(s):
Natural Gas

ISO/RTO:
PJM

ArcLight Portfolio Company:
Parkway Generation

Our Facilities

Newsroom

May 18, 2026

Press Releases

AlphaGen and ArcLight Expand Strategic Portfolio with Acquisition of Brandywine Power

May 07, 2026

Press Releases

AlphaGen Submits 2,700 MW of Generation Uprate and Expansion Projects to PJM

Apr 28, 2026

Press Releases

Alpha Generation Announces 10-Year Power Supply Agreement with SMECO backed by Keys Energy Center

View All News

arthur-king

New York

Arthur Kill

The Arthur Kill Generating Station is an 878 MW natural gas fired plant consisting of two steam turbines and one gas turbine located in the Staten Island borough of New York City. Steam units 2 and 3 were built in 1959 and 1969, respectively.

Astoria

New York

Astoria

The Astoria Generating Station is a 935 MW natural gas fired plant located in Astoria, in the Queens borough of New York City, bounded by the East River and Luyster Creek. It consists of four generating units (Units 2, 3, 5 and GT-1) with an aggregate average capacity rating of 957 MW. Units 3 and 5 have the ability to operate on ULSD No. 2 fuel oil as a backup during periods gas system constraints. Astoria’s dispatch level is intermediate.

The plant is part of a larger complex that is comprised of approximately 300 acres, most of which is used for various utility purposes including power generation, indoor storage, oil storage, liquefied natural gas storage, vehicle storage and servicing and office space.

Bergen

New Jersey

Bergen (1 & 2)

The Bergen Generating station consists of two combined cycle natural gas units located in Ridgefield, New Jersey, northeast of the Hackensack River. Fuel oil is used as a backup to enhance reliability and fuel optionality.

Bethlehem

New York

Bethlehem

The Bethlehem Energy Center is an approximately 900 MW combined cycle generating station located in Bethlehem, New York, that entered service in 2005. The station is natural gas-fired and equipped with emissions control technologies.

Brandywine

Maryland

Brandywine

The Brandywine Power Facility is an approximately 290 MW combined cycle natural gas fired generating station located in Prince George’s County, Maryland. The station entered service in 1996 and was acquired by AlphaGen in May 2026.

Bridgeport

Connecticut

Bridgeport

Bridgeport Harbor Station 5 is an approximately 500 MW highly efficient combined cycle generating station that began commercial operations in Bridgeport, CT, in 2019. The station is dual fuel capable, running primarily on natural gas with ultra-low sulfur distillate as a reliability back-up fuel, and is equipped with the latest state-of-the art emissions control technologies.

Burlington

New Jersey

Burlington

The Burlington Generating Station consists of 4 simple cycle units on the banks of the Delaware River in Burlington, New Jersey. The station is dual fuel capable, running primarily on natural gas with ultra-low sulfur distillate as a reliability back-up fuel, has black start capability, and provides synchronous condensing for grid stability with fast start optionality.

ct-jets

Connecticut

CT Jets

Generation Bridge’s Connecticut Jets consists of four remote jet engine stations located in Cos Cob, Branford, Torrington (Franklin Drive) and Torrington Terminal. The stations comprise 167 MW of capacity in aggregate and are capable of rapidly dispatching to meet demand.

Connecticut

Devon

The Devon Generating Station, located on the Housatonic River near the Long Island Sound, consists of five fast-start peaking units with a total approximate capacity of 175 MW. The facility includes four 50-MW dual-fueled combustion turbines, enough to power more than 160,000 homes.

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New York

Gowanus

The Gowanus Generating Station is a 260 MW floating power station located on Gowanus Bay in Brooklyn along the east side of the Upper New York Bay. The facility consists of 32 simple cycle combustion turbine units situated equally across four generating barges. The facility is one of the largest floating generating stations in the world. The site also includes approximately 25 acres of piers and submerged land.

The Gowanus facility can start with as little as fifteen minutes notice. The units are flexible from an operating perspective and are available year-round to offer system- peaking capacity. With 16 of 32 units equipped for dual fuel firing, the site has additional optionality regarding fuel selection. In addition, the facility has black-start capability and was the first generating station to resume operations following the Black Out in August 2003.

Kearny

New Jersey

Kearny

The Kearny Generating Station consists of 10 simple cycle units on the banks of the Hackensack River in South Kearny, New Jersey. It is a top performing diverse station, consisting of dual fuel and fast start optionality, has black start capability, and provides synchronous condensing for grid stability.

Kleen

Connecticut

Kleen

Kleen Energy Systems is a 620 MW natural gas-fired power plant located in Middletown, CT and is one of New England’s newest natural gas combined-cycle plants, providing critical capacity, energy, and ancillary services.

Linden

New Jersey

Linden (CC/CT)

The Linden facility is a best-in-class combined cycle asset, providing capacity to the PJM and NYISO grids. With dual combined cycle configurations, Linden provides a wide range of load flexibility between 150MW and 1,300MW. The simple cycle combustion turbines provide black start capability for grid resiliency. Fuel oil is used as a backup to enhance reliability and fuel optionality.

long-beach

California

Long Beach

The Long Beach Generating Station, located in Los Angeles County, consists of four simple-cycle natural gas-fired turbines totaling 252 MW of installed capacity. The facility was repowered in 2007.

LEC-aerial-3_web

Ohio

Lordstown

The Lordstown Energy Center is a 940 MW combined-cycle natural-gas-fueled electric generation facility located in the village of Lordstown, Ohio. The facility provides safe, clean, efficient and reliable power supply to approximately 850,000 homes and businesses served by PJM Interconnection’s regional transmission network.

middletown

Connecticut

Middletown, CT

The Middletown Generating Station, situated along the Connecticut River in the Maromas section of Middletown, CT, is an approximately 762 MW plant consisting of three steam units and one combustion turbine capable of powering 600,000 homes. Middletown supplies power to ISONE.

middletonOH

Ohio

Middletown, OH

The Middletown Energy Center is an efficient combined cycle asset, located in the Duke Ohio transmission zone. The 483 MW facility in Butler Count, Ohio commenced operations in 2018 and is one of the newest natural gas combined cycle power plants in PJM

Connecticut

Montville

The Montville Generating Station is an approximately 500 MW peaking plant providing enough power to support over 400,000 homes during peak electric demand periods. The plant’s four units are either dual-fuel (gas or oil), oil-fueled or diesel-fueled generators. The 49-acre facility along the Thames River supplies power to ISO-NE.

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New York

Narrows

The Narrows Generating Station is a 322 MW floating power station located in Brooklyn along the east side of Upper New York Bay. The facility consists of 16 simple-cycle combustion turbine units on two floating power barges. All of the units at Narrows have dual-fuel capability. The units at Narrows also provide critical system peaking capacity and can be started in fifteen minutes or provide Black Start capability for system restoration. Throughout the year the units serve as peaking resources.

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Connecticut

New Haven Harbor

New Haven Harbor consists of generation Units 1-4 located in New Haven, CT. Unit 1 is an approximately 435 MW dual fuel capable steam turbine generating station, which first began commercial operations in 1975. Units 2-4 are gas fired peaking turbines with an aggregate generating capacity of approximately 140 MW.

New York

Oswego

The Oswego Generating Station is located on 93 acres along the south shore of Lake Ontario and can generate enough electricity to support over 1.3 million homes. The 1,641 MW facility consists of two large steam generators that are primarily oil-fueled. Unit 5 was built in 1975 and unit 6 in 1979. Both are currently operating as peaking units and sell power to the NYISO.

Keys

Maryland

Keys

The Keys Energy Center is a best-in-class combined cycle facility yielding the most efficient operation in the Maryland region of PJM. The facility is located in Brandywine, Maryland and features the most advanced Siemens F-Class combustion turbine (CT) generators. The station was designed to operate in daily cycling mode and to run continuously as base load. Keys’ unique design allows for full bypass operation if required, operating CTs in simple-cycle and fast unit startups with one hour to dispatch.

Sewaren

New Jersey

Sewaren

Sewaren is New Jersey’s most efficient combined cycle unit. Located in Sewaren, New Jersey, the facility is capable of rapid response startup in times of peak demand.

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New York

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