Kendall Sustainable Infrastructure

What Kendall Sustainable Infrastructure does

Kendall Sustainable Infrastructure, LLC (KSI) is a privately held development, finance, and asset management firm that develops, finances, owns, and operates distributed-scale sustainable infrastructure assets—primarily solar, with adjacent storage and water resource investments. Founded around 2011 as an affiliate of Kendall Investments, LLC (established 2004) and headquartered at 6 University Road in Cambridge, Massachusetts, KSI has deployed approximately $500M of capital across more than 80 distributed infrastructure transactions and owns or operates 130 MWdc of completed solar capacity across eight US states (New York, New Jersey, California, Vermont, New Hampshire, Rhode Island, Oregon, and Illinois), with an additional 60 MWdc under active construction as of February 2026.

KSI operates as an independent power producer with three interlocking revenue streams: (1) project finance and take-out financing for developers and EPC contractors on assets typically between $500K and $25M, (2) long-term ownership of operating distributed-scale solar assets monetized through PPAs, net metering, and tax-equity–supported economics, and (3) asset management services for its investor LPs. Its go-to-market relies on deep, repeat relationships with regional developers and EPC contractors rather than competitive bidding. The capital stack includes senior secured debt from Prudential Private Capital (PGIM) and Cambridge Savings Bank, tax equity from Nelnet Solar and Monarch Private Capital, and institutional co-investment via Manulife Investment Management (which funded the December 2024 CleanCapital acquisition of KSI's 22.7 MW portfolio, concluding the lifecycle of KSI's first fund). Off-takers span municipalities, universities, schools, and hospitals (MUSH segment); commercial and industrial buyers such as Corning and Cornell University; and over 800 community solar subscriber households.

Name

Kendall Sustainable Infrastructure

Legal name

Kendall Sustainable Infrastructure, LLC

Website

https://kendallsustainableinfrastructure.com

Company type

Private

Founded year

2011

Operating status

Operating

Headcount range

1–10 employees

Short description

Kendall Sustainable Infrastructure is a Cambridge, MA-based independent power producer and asset manager that develops, finances, owns, and operates distributed-scale solar, storage, and water projects across eight US states, serving municipalities, schools, businesses, and community solar subscribers.

Ownership category

akta.pro rank

Product category

Renewable Energy Asset Management

NAICS

Electric Power Generation, Transmission and Distribution (2211), Utility System Construction (2371)

SIC

Services-Engineering, Accounting, Research, Management (8700)

akta.pro primary industry

Utility-Scale Power Generation Asset Management (EUAEAMAA)

akta.pro secondary industries

Sustainable Private Markets (Impact PE/VC, Private Credit, Infrastructure) (FSAAALAG), Project Finance & Capital Structuring (Debt/Tax Equity/Project Bonds) (EUAMAAAD), Infrastructure & Project Finance Private Debt (FSANADAH)

Keywords

• Distributed solar investment
• Renewable energy asset management
• Solar project finance
• Sustainable infrastructure ownership
• Community solar development

Headquarters

HQ city

Cambridge

HQ country

United States

HQ region

North America

Offices1 record

Markets served

GTM type

B2B

Offering type

Services

Cost components

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

Revenue model

1. Project Finance and Development: KSI provides take-out-finance to originators of projects, with strategic relationships with developers and EPC contractors. The company provides capital to local developers, hires EPC contractors, and ultimately owns and operates the assets. Revenue is generated through asset ownership and long-term cash flows from operating solar projects.
2. Asset Management Services: Once projects are built, KSI pays keen attention to contracts, performance and day-to-day operations. This drives returns for investors and generates ongoing management fees.

Pricing tiers

Go-to-market motion2 records

Distribution channels1 record

Marketing channels5 records

Core offering

Kendall Sustainable Infrastructure is an asset management and independent power producer that develops, finances, owns, and operates distributed-scale solar, storage, and water resource projects. The firm provides take-out and construction financing to project originators and EPC contractors (with investments typically ranging $500K to $25M per project) and then operates the assets long-term, generating cash flows and management fees for institutional, family office, and high-net-worth investors. Its portfolio spans municipalities, universities, schools, commercial and industrial customers, and community solar subscribers across eight U.S. states.

Product overview

Kendall Sustainable Infrastructure (KSI) is an independent power producer and asset management firm that develops, finances, builds, and owns distributed-scale sustainable infrastructure projects. The company's core offerings consist of solar project development and ownership, project finance (take-out and construction financing), and asset management services. KSI also invests in energy storage and water resource projects as part of its portfolio. The firm focuses on small to medium-sized distributed generation assets with typical capital requirements between $500K and $25M per project, providing financing to local developers and EPC contractors with the ultimate goal of ownership and long-term operation.

Differentiator

Problem solved

Functional benefit

Products and services

• Solar Project Development and Ownership
• Project Finance / Take-out Financing
• Asset Management Services

Quantifiable outcome

• 16,000+ equivalent homes powered
• +5 more outcomes

Named customers12 records

Segments6 records

Ideal customer profiles5 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Partnerships

Twelve partnerships are on record, tiered core and minor.

• New Leaf EnergycoreStrategic or Co-development Partner · 14 October 2025KSI announced expansion into Illinois through acquisition of a 2.5 MWdc solar project in Perry County from development partner New Leaf Energy. This marks the third successful collaboration between KSI and NLE, with previous partnerships on two solar projects totaling 11 MWdc in New York. Combined portfolio exceeds 13 MWdc of operating and under-construction clean-energy assets.
• CleanCapitalcoreStrategic or Co-development Partner · 17 December 2024CleanCapital acquired a portfolio of 40 assets totaling 22.7 MW from KSI for $145 million (funded by Manulife Investment Management). The acquisition concluded the lifecycle of KSI's first of three funds dedicated to distributed-generation solar. The portfolio consisted of net-metering and community solar assets built between 2015-2018, primarily in Vermont with assets also in New York and California.
• Advanced Solar ProductsminorChannel Partner/ Reseller/ Distributor · 27 November 2023New Jersey-based construction contractor that built four community solar projects totaling 4.4 MW in Pennsauken and Moorestown, NJ. ASP has been in business since 1991 and involved in installation of over 270 PV systems totaling over 80 megawatts.
• Independence SolarminorChannel Partner/ Reseller/ Distributor · 27 November 2023New Jersey-based developer that partnered on four community solar projects totaling 4.4 MW. Since 2007, has developed and constructed almost 100 solar projects totaling 75 MW.
• ArcadiaminorChannel Partner/ Reseller/ Distributor · 27 November 2023Climate technology company managing community solar subscribers. Manages the nearly 700 households benefiting from the NJ community solar projects. Manages nation's largest community solar portfolio with over 1.8 GW of solar under management.
• AC PowercoreStrategic or Co-development Partner · 3 October 2023AC Power developed two brownfield solar sites totaling 12.9 MW in upstate New York (6.9 MW in Ft. Edward on capped landfill; 6.0 MW in Queensbury on former factory grounds). KSI owns and operates both facilities.
• GreenSpark SolarcoreChannel Partner/ Reseller/ Distributor · 3 October 2023GreenSpark Solar served as contractor constructing both brownfield sites (6.9 MW Ft. Edward and 6.0 MW Queensbury projects). Long-standing partnership with over five years working together in NY State. GreenSpark has installed over 200 MWs of renewable energy.
• Q CELLScoreTechnology or Integration · 14 January 2022Strategic partnership for project co-development and financing. Q CELLS brings a full suite of solutions including best-in-class Energy Management Software (EMS), BESS expertise, and renewable energy hardware. Q CELLS has allocated capital for investment into KSI projects including solar modules, BESS, grid services, and Geli EMS. Gird Equity financing product offered for select Battery Energy Storage Systems (BESS).
• Green Lantern DevelopmentminorChannel Partner/ Reseller/ Distributor · 1 August 2017Vermont solar developer and general contractor for Montpelier solar project and Mount Snow solar projects totaling 1.5 MW. Leading developer of clean, distributed energy solutions.
• Novus Energy DevelopmentminorChannel Partner/ Reseller/ Distributor · 1 August 2017Development partner for Montpelier solar project. Partnered with KSI and Green Lantern for ribbon-cutting ceremony.
• SunCommoncoreChannel Partner/ Reseller/ Distributor · 15 September 2015Vermont's largest residential solar company heading project development, EPC, and ongoing support for Community Solar Array Program. Approximately 50 projects averaging 200kW each enabling consumers to virtually purchase about 13 MW of solar power.
• Kendall Investments, LLCminorOthersParent company and affiliate that KSI is affiliated with. KSI is an innovative asset management firm focused on sustainable infrastructure projects.

Scale indicators10 records

Recent moves6 records

Expansion highlights5 records

Direct peers

• Soltage: Soltage is a commercial and community solar IPP that develops, finances, owns and operates distributed solar projects; directly comparable in target offtakers, geographic focus and asset ownership model.
• Nexamp: Nexamp is one of the largest community solar developers and asset owners in the US, building a comparable pipeline of community solar subscription projects to KSI across multiple Northeast states.
• BlueWave Solar: BlueWave Solar is a Boston-area distributed solar and storage developer with community solar and municipal offtake expertise that closely mirrors KSI's New England focus and project profile.
• Pivot Energy: Pivot Energy is a distributed solar developer and IPP focused on community solar and C&I projects; comparable business model of project origination plus long-term ownership with institutional finance partners.
• CleanCapital: CleanCapital is a distributed-scale solar IPP and asset owner that acquired KSI's 22.7 MW Fund I portfolio in 2024; both firms focus on owning and operating sub-25 MW distributed solar assets across the US with similar institutional capital sources.
• New Leaf Energy: New Leaf Energy is a distributed-scale solar developer and KSI's repeat development partner (3rd collaboration announced Oct 2025); both firms co-develop distributed solar projects with shared investor base and similar project sizes.
• Dimension Energy: Dimension Energy is a community solar developer and owner-operator with overlapping geographic exposure in the Northeast and similar focus on serving municipal and LMI subscribers through project finance structures.
• Altus Power: Altus Power is a leading commercial-scale solar IPP focused on distributed generation and community solar projects for schools, municipalities, and businesses — directly overlapping KSI's MUSH and community solar segments.

Broad incumbents

• EDF Renewables: EDF Renewables is a major US renewable energy developer with a broad distributed-solar offering through PowerFlex; competes for some of the same MUSH and distributed-generation deals as KSI but at significantly larger scale and balance sheet.
• ENGIE North America: ENGIE is a global energy major with a substantial US distributed solar and storage business; competes with KSI in the distributed generation segment while operating a much broader portfolio across utility-scale renewables, gas, and services.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks5 records

Key highlights7 records

Customer concentration

• LinkedInlinkedin.com/company/kendall-sustainable-infrastructure-llc
• Xx.com/KSIEnergy

Revenue estimate

Valuation estimate

Number of profiles

Profiles12 records

Funding overview

Funding rounds

Investors

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

M&A

Investments

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

Frequently asked questions about Kendall Sustainable Infrastructure