ArcLight Capital

Name

ArcLight Capital

Legal name

ArcLight Capital Partners, LLC

Website

https://arclight.com

Company type

Private

Founded year

2001

Operating status

Operating

Headcount range

101–250 employees

Ownership category

akta.pro rank

Product category

Infrastructure Private Equity

NAICS

Portfolio Management and Investment Advice (523940), Portfolio Management and Investment Advice (52394), Other Investment Pools and Funds (5259)

SIC

Investment Advice (6282)

akta.pro primary industry

Energy & Power Infrastructure Funds (Generation, Transmission, Storage) (FSANAEAB)

akta.pro secondary industries

Core Infrastructure Funds (Transport, Social, Digital, Utilities) (FSANAEAA), Renewables & Energy Transition Funds (Solar, Wind, Hydrogen, CCUS) (FSANAEAD)

Keywords

• Private equity infrastructure
• Power infrastructure investment
• Renewable energy investing
• Natural gas transmission
• Energy transition assets

Headquarters

HQ city

Boston

HQ country

United States

HQ region

North America

Offices1 record

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Operations, Technology or R&D, Marketing or Sales, Infrastructure

Revenue model

1. Fund Management Fees: ArcLight earns management fees from institutional investors (limited partners) who commit capital to its private equity infrastructure funds. The firm has raised multiple funds including Fund VIII at $3.9 billion.
2. Carried Interest (Performance Fees): Private equity model where ArcLight earns performance-based carried interest when fund investments generate returns above preferred returns for limited partners.
3. Asset Management Services: Through portfolio companies like AlphaGen and CAMS partnership, ArcLight provides ongoing operational management of power infrastructure assets generating recurring management fee income.

Go-to-market motion1 record

Distribution channels1 record

Marketing channels4 records

Core offering

ArcLight Capital Partners is a private equity infrastructure investment firm that raises capital from institutional investors and invests in power generation, renewable energy, natural gas transmission, and digital economy infrastructure assets across North America. The firm manages multiple infrastructure investment funds (currently Fund VIII at $3.9 billion) and operates specialized portfolio companies that develop, own, and operate power assets including 36 GW of generation and 26,000 miles of pipeline infrastructure. ArcLight earns management fees and carried interest from limited partners while providing operational asset management through platforms such as AlphaGen and proprietary in-house capabilities spanning market analytics, project management, development, and renewable operations.

Product overview

ArcLight Capital Partners is a value-added infrastructure investment firm offering access to multiple specialized investment platforms and portfolio companies focused on power, renewables, and strategic gas infrastructure. The core investment vehicles include ArcLight Infrastructure Partners Funds (currently Fund VIII with $3.9 billion in commitments), while operational platforms include AlphaGen for power infrastructure management, Elevate Renewables for battery storage, Infinigen for renewable assets, and REC Solar for distributed solar. These platforms are supported by proprietary internal services including ArcLight Market Analytics, ArcLight Project and Risk Management, ArcLight Development Services, and ArcLight Renewable Services, enabling comprehensive lifecycle management from investment origination through asset optimization.

Differentiator

Problem solved

Functional benefit

Brands

• AlphaGen: Power infrastructure management platform managing one of the largest independent power portfolios in the U.S. with over 11 GW of critical power assets across strategic markets including Pennsylvania and Ohio within the PJM Interconnection.
• Elevate Renewables
• Infinigen
• REC Solar

Products and services

• ArcLight Infrastructure Partners Funds Private equity infrastructure fund vehicles raising capital from institutional investors (limited partners) for investment in power, renewables, storage, transmission, midstream, and digital infrastructure. Current vehicle is Fund VIII at $3.9 billion.
• AlphaGen Portfolio company platform that manages and operates critical power infrastructure assets totaling over 14,000 MW of capacity across PJM, NYISO, ISONE, and CAISO markets, providing reliable, secure, and sustainable power generation. Includes Eastern Generation, Generation Bridge, and Parkway Generation assets.
• Elevate Renewables Utility-scale battery energy storage (BESS) platform with a 5 GW development pipeline at varying stages of development and construction, co-located with ArcLight's power infrastructure fleet. Operates projects such as Prospect Power (150 MW/600 MWh) in Virginia.
• Infinigen Renewables Renewable energy platform developing and operating solar and storage assets across North America, Central America, and the Caribbean with an active new build pipeline of approximately 1 GW and substantial solar assets in Puerto Rico.
• REC Solar Distributed energy platform focused on solar, fuel cells, battery energy storage systems (BESS), and microgrids, delivering over 700 projects across 29 states, serving small utilities, commercial and industrial customers, data centers, and community solar markets.
• ArcLight Market Analytics (AMA) Proprietary in-house analytics team providing market and regulatory insights, risk evaluation, hedging, and bilateral contracting support. Has assisted in execution of over $6.2 billion in bilateral contracts with ~15 year weighted average tenor for ArcLight portfolio assets.
• ArcLight Project and Risk Management (APRM) Proprietary in-house team providing front-end development through construction management services, overseeing capital projects on behalf of ArcLight Funds with over $11 billion of capital projects managed.
• ArcLight Development Services (ADS) Development platform focused on advantaged renewable, transformative, gas power, and data center-related infrastructure development, leveraging brownfield entitlements from incumbent infrastructure assets including real estate, grid interconnections, and stakeholder relationships.
• ArcLight Renewable Services (ARS) Platform providing transformational management and operational best practices for wind and solar infrastructure investments, implementing operational, technical, commercial, financial and redevelopment best practices across ArcLight's renewable portfolio.

Quantifiable outcome

• $6.2 billion in bilateral contracts executed with ~15 year weighted average tenor through ArcLight Market Analytics
• +3 more outcomes

Named customers2 records

Segments3 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature4 records

Partnerships

Seven partnerships are on record, tiered core, major and strategic.

• Elevate InfrastructurecoreStrategic or Co-development Partner · 11 June 2026Elevate Infrastructure and ArcLight Capital Partners celebrated ribbon cutting of Prospect Power, a 150 MW/600 MWh battery energy storage facility in Rockingham County, Virginia—the largest standalone battery storage asset in Virginia and PJM Interconnection. Facility increases PJM's battery storage capacity by more than 50% and is contracted under 15-year PPA with Dominion Energy Virginia. Project acquired by ArcLight and Elevate in January 2026.
• AlphaGencoreOthers · 18 May 2026AlphaGen, in partnership with ArcLight, completed acquisition of Brandywine Power from Onward Energy Holdings—a 250 MW combined-cycle facility in Prince George's County, Maryland within PJM's PEPCO Zone. Transaction strengthens AlphaGen's position as largest private independent power producer in U.S. and expands Mid-Atlantic footprint. AlphaGen is a portfolio company formed and owned by ArcLight affiliate.
• InvenergymajorStrategic or Co-development Partner · 13 March 2026ArcLight signed agreement to acquire InfraBridge's 50% stake in Invenergy AMPCI Thermal Power (IATP), a North American power generation portfolio comprising 5.4GW across 11 assets. Invenergy retains ownership interest and continues managing operations. Assets include combined cycle plants in Washington, Pennsylvania, Illinois, and Ontario. Transaction expected to close H2 2026, subject to regulatory approvals.
• Advanced PowercoreStrategic or Co-development Partner · 24 July 2025ArcLight acquired Advanced Power, a leading power infrastructure developer, with initial $1 billion equity commitment and potential to invest more than $5 billion of equity over five years to enable over 20 GW of new power generation capacity. Advanced Power brings more than 12 GW of late-stage power projects and over 10 GWh of energy storage capacity. Partnership focuses on deploying modern, low-carbon power projects for data center growth, utilities, and grid reliability.
• Kinder MorganmajorStrategic or Co-development Partner · 13 May 2025ArcLight acquired additional 25% interest in Natural Gas Pipeline Company of America (NGPL), bringing total economic ownership to 62.5% and becoming largest owner. Kinder Morgan retains 37.5% economic interest and continues operating NGPL as strategic partner. NGPL is one of largest interstate pipeline systems in U.S., spanning nine states with ~9,100 miles of pipeline and 288 Bcf storage capacity.
• Consolidated Asset Management Services (CAMS)coreOthersLong-standing operational partner with 18-year working relationship and approximately 2,000 employees. CAMS provides IT, environmental health and safety, ESG, engineering, due diligence, and general operating services to infrastructure sector. Works with ArcLight during pre-acquisition diligence through efficient transition, best practices implementation, and facilitating seamless transfers to buyers.
• Takanock (DigitalBridge Partnership)strategicStrategic or Co-development PartnerArcLight and DigitalBridge launched Takanock, a digital power platform, committing up to $500 million to develop powered land for hyperscalers. Platform addresses power infrastructure needs for AI data center expansion.

Scale indicators17 records

Recent moves7 records

Expansion highlights6 records

Direct peers

• Energy Capital Partners: Energy Capital Partners is a focused power and energy infrastructure investor, recently acquired by Bridgepoint. Directly comparable in strategy and asset focus to ArcLight's power and renewables platform.
• Macquarie Asset Management: Macquarie is a major infrastructure investor with deep involvement in power generation, transmission, and renewable assets globally. Multiple ArcLight hires came from Macquarie, suggesting strong talent and strategy overlap.
• Brookfield Asset Management (Infrastructure): One of the largest global infrastructure investors with overlapping focus on power, renewables, and digital infrastructure. Brookfield Infrastructure Partners directly competes for similar institutional capital and energy transition assets, making it the most comparable peer to ArcLight.
• I Squared Capital: Independent infrastructure private equity firm with comparable focus on power, renewables, and energy transition assets. Direct competitor for mid-market infrastructure investments similar to ArcLight's middle-market focus.
• Stonepeak Infrastructure Partners: Infrastructure-focused private equity firm investing across power, energy transition, and digital infrastructure. Comparable fund size and strategy, making it a direct peer for institutional capital and deal flow.
• Global Infrastructure Partners (BlackRock): Acquired by BlackRock in 2024, GIP is a major infrastructure investor with significant power and energy portfolio. Direct competitor for institutional capital commitments and large-scale infrastructure transactions.
• Blackstone (Energy Partners): Blackstone's energy-focused funds invest in power generation and infrastructure. Notably, ArcLight's President Angelo Acconcia came from Blackstone, indicating direct talent and strategy overlap in the infrastructure private equity space.
• KKR Global Infrastructure: KKR's infrastructure platform invests across power, renewables, and digital infrastructure with comparable scale and institutional LP base. Directly competes with ArcLight for similar control investments and energy transition opportunities.

Broad incumbents

• DigitalBridge Group: Digital infrastructure-focused alternative asset manager that is acquiring ArcLight for $1.05B. Broader focus on data centers, towers, and digital infrastructure with overlapping interest in power solutions for AI infrastructure.

Regional players

• Caisse de dépôt et placement du Québec (CDPQ) Infrastructure: Major Canadian pension fund infrastructure investor with similar focus on power, renewables, and digital infrastructure globally. Competes for institutional co-investment opportunities though primarily North American focus differs slightly from ArcLight's U.S. concentration.

Market position

Strengths5 records

Weaknesses4 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

• LinkedInlinkedin.com/company/arclight-capital-partners
• Xx.com/bonnieholub

Revenue estimate

Valuation estimate

Number of profiles

Profiles8 records

Subsidiaries15 records

Funding overview

Funding rounds1 record

Investors1 record

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A10 records

Investments15 records

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about ArcLight Capital