Onsite Partners

What Onsite Partners does

Onsite Partners, LLC is a Columbus, Ohio-based behind-the-meter distributed energy solutions company founded in 2015 that develops, finances, owns, and operates distributed energy assets for institutional and commercial customers. Its product portfolio spans utility-scale and distributed solar photovoltaic arrays (from roughly 1 MW to 10+ MW), battery energy storage systems (BESS), natural gas peaking generation, combined heat and power (CHP) cogeneration, and fuel cells, complemented by an Energy Management platform (Matrix) that performs real-time prioritization of grid, on-site generation, and storage for cost and revenue optimization. The company also runs an Energy Advisory Services line that delivers procurement strategy, market analytics, contract optimization, and energy efficiency program management.

The business operates on two revenue mechanics. The primary engine is asset ownership monetized through long-term Power Purchase Agreements (PPAs) — typically 20-30 years in tenor — under which customers purchase electricity produced by OnSite-owned assets with no upfront capital outlay. A secondary, recurring line is fee-based energy advisory and program management consulting. Customers are concentrated in the MUSH segment (municipalities, universities, schools, hospitals), multi-site commercial and industrial enterprises, process manufacturers, and — most recently — data centers, with a named-customer roster spanning Denison University, Trinity College, the City of Clyde, Madison County, the City of Canandaigua, multiple rural electric cooperatives, Pilkington North America, TJX, JEA, and Rice Lake Utilities.

Onsite Partners originated as a subsidiary of American Electric Power (AEP) and was acquired in February 2026 by funds advised by Basalt Infrastructure Partners, concurrently absorbing One Power Company. As of the close it operates roughly 90+ distributed energy projects across 21 U.S. states with installed capacity exceeding 200 MW and a stated distributed resource asset base valued at approximately $500 million, supported by offices in Columbus (HQ) and Chicago and advisory engagements extending into Canada and 12+ international locations.

Name

Onsite Partners

Legal name

Onsite Partners, LLC

Website

https://onsitepartners.com

Company type

Private

Founded year

2015

Operating status

Operating

Headcount range

101–250 employees

Short description

Onsite Partners is a Columbus, Ohio-based behind-the-meter distributed energy company that develops, finances, and owns solar, battery storage, CHP, fuel cell, and natural gas peaking assets under long-term PPAs, and provides energy advisory services, serving municipalities, universities, hospitals, multi-site commercial and industrial customers, and data centers across 21 U.S. states.

Ownership category

akta.pro rank

Product category

Distributed Energy Solutions

NAICS

Solar Electric Power Generation (221114), Electric Power Generation (22111)

SIC

Cogeneration Services & Small Power Producers (4991)

akta.pro primary industry

C&I Onsite/Behind-the-Meter Energy Supply (Solar, CHP, Microgrids) (EUAGACAJ)

akta.pro secondary industries

Renewable Distributed Generation (Rooftop/Onsite Solar, Small Wind, Small Hydro) (EUACALAJ), DER Financing, Leasing & Billing Platforms (TPO, PPA, On-Bill) (EUAMAJAJ), Community Solar Development & Subscription Management (EUAMAJAA)

Keywords

• Distributed energy solutions
• Power purchase agreements
• Battery energy storage
• Combined heat power
• Energy advisory services

Headquarters

HQ city

Columbus

HQ country

United States

HQ region

North America

Offices2 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

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

Revenue model

1. Energy Asset Ownership and Operations: Onsite Partners owns, operates, and maintains distributed energy assets including solar arrays, battery storage, and natural gas generation facilities. Revenue generated through long-term Power Purchase Agreements (PPAs) with customers purchasing electricity produced by the assets. The company assumes capital and operating costs while customers pay for energy produced.
2. Energy Advisory and Consulting Services: Comprehensive energy advisory and program management consulting services. Includes energy procurement strategy, market analysis, cost management, and sustainability program development. Ongoing collaboration with clients through program lifecycle.
3. Project Development and Asset Acquisition: Development of distributed energy projects (solar, storage, CHP) and acquisition of existing project portfolios. Revenue realized through project sale or ongoing asset ownership and management.

Pricing tiers

Go-to-market motion2 records

Distribution channels1 record

Marketing channels4 records

Core offering

Onsite Partners is a behind-the-meter distributed energy solutions company that owns, develops, and operates distributed energy assets including solar PV, battery storage, fuel cells, natural gas generation, and combined heat and power (CHP) systems. The company also provides energy advisory and program management services to municipalities, universities, schools, hospitals, commercial/industrial clients, and data centers, primarily delivering solutions through long-term Power Purchase Agreements (PPAs).

Product overview

Onsite Partners offers a comprehensive portfolio of distributed energy solutions, combining owned asset-based products with advisory services. The core product suite includes solar photovoltaic arrays (ranging from 1 MW to 10+ MW), battery energy storage systems (BESS), combined heat and power (CHP) cogeneration, and natural gas peaking generation. These asset-based solutions are complemented by energy advisory services and program management consulting. The company operates through Power Purchase Agreements (PPAs) and long-term service agreements, enabling clients to access renewable energy and behind-the-meter generation without upfront capital investment. The company manages over 90 distributed energy projects across 21 U.S. states with approximately $500 million in distributed resource assets.

Differentiator

Problem solved

Functional benefit

Products and services

• Distributed Energy Solutions (behind-the-meter turnkey delivery) End-to-end turnkey behind-the-meter energy solution covering assessment, development, financing, construction, and ongoing operations of distributed energy assets for commercial, industrial, institutional, and data center customers.
• Solar PV Array Solutions On-site solar photovoltaic generation designed, installed, owned, and operated by Onsite to deliver electricity to commercial, industrial, institutional, and data center customers under a Power Purchase Agreement.
• Battery Energy Storage System (BESS) On-site battery energy storage systems owned and operated by Onsite to provide peak shaving, demand charge management, resilience, and grid services for commercial, industrial, and institutional customers.
• Combined Heat and Power (CHP) Systems On-site combined heat and power systems that generate electricity and capture waste heat for thermal use, targeted at process and manufacturing, institutional, and commercial customers needing combined thermal and electric energy.
• Natural Gas Generation and Peak Shaving Solutions On-site natural gas-fired generation designed to provide peak shaving, on-site power, and reliability for commercial and industrial customers.
• Fuel Cell Systems On-site fuel cell systems delivered, owned, and operated by Onsite to provide clean, reliable on-site power for commercial and institutional customers.
• Energy Advisory Services Advisory consulting covering energy strategy, tariff and market analysis, feasibility assessment, DER screening, and PPA structuring for municipalities, universities, schools, hospitals, commercial/industrial clients, and data centers.
• Energy Efficiency Program Management Managed program to identify, implement, and verify energy efficiency measures across customer facilities as a complement to Onsite's distributed energy solutions.
• Distributed Resource Management (Matrix-based operations) Ongoing monitoring, optimization, and reporting service for Onsite-owned and third-party distributed energy assets, delivered through the Matrix Energy Management platform.

Quantifiable outcome

• Projects can save municipalities $200,000+ annually in power costs (City of Clyde solar project)
• +4 more outcomes

Named customers11 records

Segments4 records

Ideal customer profiles4 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature3 records

Partnerships

15 partnerships are on record, tiered minor and core.

• SoCore EnergyminorChannel Partner/ Reseller/ Distributor · 1 December 2017SoCore Energy served as general contractor for Guadalupe Valley Electric Cooperative's SunHub project, designing and building the 2 MW community solar farm.
• Renewable Energy Systems (RES)coreChannel Partner/ Reseller/ Distributor · 14 November 2017RES developed, constructed, and operates the 3 MW Penitente Solar Project. OnSite Partners owns the solar installation and provides output to San Luis Valley Rural Electric Cooperative.
• Dovetail SolarminorChannel Partner/ Reseller/ Distributor · 10 November 2017Dovetail Solar designed and installed solar equipment for Newark, Ohio wastewater treatment plant project. OnSite Partners provides financing and owns the facility.
• Third Sun SolarcoreChannel Partner/ Reseller/ Distributor · 1 November 2017Third Sun Solar installed the 2+ MW tracking solar array for Denison University. OnSite Partners owns and maintains the solar panels and manages electrical output.
• groSolarcoreChannel Partner/ Reseller/ Distributor · 6 June 2017groSolar developed and constructed the 7 MW NWJAX solar farm in Jacksonville, Florida, with OnSite Partners as project owner. groSolar served as developer and EPC contractor.
• RER Energy GroupcoreChannel Partner/ Reseller/ Distributor · 25 May 2017RER Energy Group developed and constructed solar projects including 4.1 MW Canandaigua array and 351 kW Clifton Springs installation. OnSite Partners owns projects under third-party ownership model.
• FuelCell EnergycoreStrategic or Co-development Partner · 8 January 2017FuelCell Energy sold the 1.4 MW fuel cell project at Trinity College to OnSite Partners. OnSite Partners owns the project and FuelCell Energy operates and maintains under 15-year service agreement.
• New Energy EquityminorChannel Partner/ Reseller/ Distributor · 1 January 2017New Energy Equity handled contractual and legal responsibilities for Clifton Springs and Canandaigua solar installations. Co-development partner with RER Energy Group.
• Hunt EngineersminorImplementation/ SI/ Consulting Partner · 1 January 2017Hunt Engineers provided consulting and design services for Canandaigua solar project on old landfill site.
• EnSync EnergycoreStrategic or Co-development Partner · 1 August 2016EnSync Energy sold multiple Power Purchase Agreement projects to OnSite Partners, including first solar plus storage PPAs in Hawaii. Three projects include EnSync's Agile Hybrid Storage and Matrix Energy Management systems, sited behind-the-meter at condominiums and university campuses.
• Clean Energy Buyers AssociationminorOthersActive membership in leading business association for clean energy procurement.
• Chicagoland Chamber of CommerceminorOthersActive membership reflecting commitment to regional business community.
• Municipal Electric Utilities of WisconsinminorOthersActive membership in utility association supporting municipal electric utilities.
• Ohio Chamber of CommerceminorOthersActive membership in state chamber of commerce.
• The Ohio Manufacturer's AssociationminorOthersActive membership in manufacturing association.

Scale indicators5 records

Recent moves6 records

Expansion highlights5 records

Direct peers

• ForeFront Power: ForeFront Power develops, owns, and operates distributed solar and storage projects for schools, universities, municipalities, and commercial customers nationwide — a close functional match to Onsite Partners' MUSH-focused PPA model.
• Pivot Energy: Pivot Energy is a national solar developer focused on community solar and C&I projects financed and owned under long-term PPAs, with growing utility and public-sector exposure — comparable to Onsite Partners' community solar and MUSH focus.
• Soltage: Soltage develops, finances, owns, and operates distributed solar and storage projects for commercial, industrial, institutional, and utility customers via PPAs — directly competing with Onsite Partners in the C&I/MUSH on-site solar market.
• Ameresco: Ameresco is a publicly traded energy services and renewables company that develops, owns, and operates solar, CHP, and storage projects for municipalities, universities, schools, and federal/C&I customers — substantially overlapping with Onsite Partners' customer verticals and asset-ownership model.
• Cypress Creek Renewables: Cypress Creek is a developer and long-term owner of solar and storage projects across the U.S., with deep exposure to community solar and C&I behind-the-meter PPAs — closely mirroring Onsite Partners' project finance and asset-ownership approach.
• Summit Ridge Energy: Summit Ridge Energy is one of the largest community solar owners/operators in the U.S., acquiring and developing community solar portfolios under long-term PPAs — directly comparable to Onsite Partners' community solar subscription and PPA business.
• Nautilus Solar Energy: Nautilus Solar Energy develops, finances, and owns community and distributed solar assets across multiple U.S. states, with a similar third-party ownership / PPA model targeting the same community solar and C&I customer base as Onsite Partners.

Broad incumbents

• ENGIE (Distributed Solar / Brightsmith): ENGIE (including its former OpTerra distributed-generation business, now Brightsmith) is one of the largest behind-the-meter solar, storage, and CHP providers to C&I and public-sector customers in North America — a direct analog to Onsite Partners' on-site PPA model across MUSH and enterprise.
• EDF Renewables Distributed Solutions: EDF Renewables Distributed Solutions (including its PowerFlex and PCE Systems subsidiaries) develops and operates distributed solar, storage, and EV charging for C&I and public-sector customers — competing with Onsite Partners in behind-the-meter and MUSH markets.

Emerging players

• Bloom Energy (service/PPA arm): Bloom Energy sells and finances fuel cell systems via long-term PPAs to universities, hospitals, and large C&I customers — directly comparable to Onsite Partners' Trinity College 1.4 MW fuel cell project and CHP/onsite generation capabilities.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

• LinkedInlinkedin.com/company/onsite-partners-llc

Revenue estimate

Valuation estimate

Number of profiles

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 Onsite Partners