On Energy Gmbh

What On Energy Gmbh does

ON Energy GmbH is a Dortmund-headquartered, mid-sized German developer of ground-mounted photovoltaic (PV) solar parks, founded in 2017 by Norman Luth and Dr. Oliver Klein and operating as part of the Solar Ruhr Gruppe alongside sister companies PVI (PV component wholesaler) and Der Solarteur (turnkey installation contractor). The company develops utility-scale PV ground-mounted systems end-to-end — from initial site identification and land securing, through grid-connection coordination, building-permit acquisition, and EEG (Renewable Energy Sources Act) tender participation, to corporate structuring of project companies and turnkey construction. Customers and off-take partners span classical energy utilities, regionally anchored municipal utilities (Stadtwerke), green power providers (Grünstromanbieter), and energy cooperatives (Energiegenossenschaften); municipal counterparties include Marpingen (Saarland), Warder (Schleswig-Holstein), Beckum and Olpe (North Rhine-Westphalia), with the municipality of Marpingen generating more electricity than it consumes thanks to the 22 MW Alsweiler park. The firm also operates a participation-oriented model ("Teilhabeorientierte Betreibermodelle") that enables local citizens, municipal utilities, and energy cooperatives to take equity stakes in individual parks.

The revenue model combines (i) one-time sale or transfer of construction-ready project rights to utilities and operators and (ii) long-term ownership and operation of selected parks as recurring-yield assets under EEG tariffs; commercial terms are negotiated project-by-project with no publicly disclosed pricing. Go-to-market is sales-led and direct: outreach to landowners via a free site-evaluation funnel on the company website, engagement with municipal politics and public administration through transparent communication, and bilateral deals with utilities and cooperatives. The company is a founder signatory of the BNE "Gute Planung – Best Practice für PV-Freilandanlagen" self-commitment, which codifies standards across climate, biodiversity, environmental, nature-conservation, and rural-development dimensions above legal minimums.

To date, ON Energy has delivered roughly 49 MWp across five named projects: Solarpark Marpingen-Alsweiler (22 MW, operational since 2020, one of the largest parks in Saarland); Solarpark Warder (11.3 MWp, operational Q2 2025, along the A7 in Schleswig-Holstein); Solarpark Beckum (3.5 MWp with battery storage, operational Q2 2025, along the A1 in NRW); Solarpark Olpe (3.7 MWp, operational Q2 2025, vertically stacked module layout on compact fields in NRW); and Solarpark Rotenburg Wümme (8.45 MWp, ~14,580 modules, first privileged PV ground-mount in the Rotenburg district of Lower Saxony). Leadership comprises four managing directors — co-founders Norman Luth (ex-Suntech Power, Yingli Solar) and Dr. Oliver Klein (ex-Siemens, Yingli Solar), Tobias Aulich (ex-Aves One AG board, Green FOX Energy) responsible for finance, construction and asset management, and Alexander Street (ex-Managing Director of Planet energy / Greenpeace Energy / Green Planet Energy) — supported by an extended leadership circle and a 30+ person organization.

Name

On Energy Gmbh

Legal name

ON Energy GmbH

Website

https://on-energy.com

Company type

Private

Founded year

2017

Operating status

Operating

Headcount range

11–50 employees

Short description

ON Energy GmbH is a Dortmund-based solar park developer (founded 2017) that develops, builds, and operates ground-mounted photovoltaic projects across Germany. It serves energy utilities, municipal utilities, green power providers, energy cooperatives, and municipalities as part of the Solar Ruhr Gruppe.

Ownership category

akta.pro rank

Product category

Solar Energy Project Development

NAICS

Solar Electric Power Generation (221114)

SIC

Electric Services (4911)

akta.pro primary industry

Utility-Scale PV EPC (Engineering, Procurement & Construction) (EUACAGAB)

akta.pro secondary industries

Solar EPC & Construction (Utility-Scale, Rooftop, Balance of System) (EUAMABAB), Solar PV Power Plant EPC (Utility-Scale) (EUAEAAAG), Solar Financing, Leasing & Ownership Platforms (Tax Equity, PPA, Securitization) (EUAMABAJ)

Keywords

• Photovoltaic project development
• Ground-mounted solar parks
• Renewable energy services
• Solar park construction
• EEG tender participation

Headquarters

HQ city

Dortmund

HQ country

Germany

HQ region

Europe

Offices2 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

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

Revenue model

1. Solar Park Development and Turnkey Construction: ON Energy develops solar parks from land identification and securing, obtaining grid connection commitments, and acquiring building permits, through to the corporate structuring of project companies and participation in EEG (Renewable Energy Sources Act) tenders. The company also handles turnkey construction of PV ground-mounted systems, drawing on the resources and competencies of partner companies within the Solar Ruhr Gruppe. Revenue is generated through the sale of construction-ready project rights and/or long-term ownership and operation of solar parks.

Go-to-market motion1 record

Distribution channels3 records

Marketing channels4 records

Core offering

ON Energy develops, builds, and operates ground-mounted photovoltaic (PV) solar park projects in Germany. The company provides end-to-end project development services including land identification and securing, obtaining grid connection commitments and building permits, project structuring, participation in EEG (Renewable Energy Sources Act) tenders, and turnkey construction of utility-scale PV systems. It sells, co-owns, or operates projects in partnership with energy utilities, municipal utilities (Stadtwerke), green power providers, and energy cooperatives.

Product overview

ON Energy GmbH is a mid-sized solar park developer offering a comprehensive portfolio of photovoltaic ground-mounted system development services. The company operates as part of the Solar Ruhr Group, providing end-to-end services from land identification and securing, through obtaining permits and grid connections, to project financing structuring and turnkey construction. Key offerings include the development of utility-scale solar parks (Solarparks/PV-Freiflächenanlagen), participation-oriented operating models for local communities, and project structuring services. The company has delivered multiple solar park projects across Germany including Warder (11 MW), Beckum (3.5 MWp), Olpe (3.7 MWp), Rotenburg Wümme (8.45 MWp), and Marpingen-Alsweiler (22 MW).

Differentiator

Problem solved

Functional benefit

Products and services

• Solarpark-Entwicklung (Solar Park Development) End-to-end development of ground-mounted solar parks, from initial land identification and securing, through grid connection confirmation and building permits, to project structuring and participation in EEG tenders. Targets energy utilities, municipal utilities, green power providers, and energy cooperatives.
• Schlüsselfertige PV-Errichtung (Turnkey PV Construction) Turnkey construction services for PV ground-mounted systems, handling all tasks from project development through to operational readiness, drawing on the resources and competencies of partner companies within the Solar Ruhr Gruppe. Targets utility-scale solar park investors and operators.
• Teilhabeorientierte Betreibermodelle (Participation-oriented Operating Models) Operating models that enable broad, low-threshold citizen participation in the economic opportunities of local solar parks, including support for the formation of energy cooperatives (Energiegenossenschaften). Targets local communities and municipalities.
• Solarpark Marpingen-Alsweiler 22 MW ground-mounted PV solar park in Marpingen-Alsweiler (Saarland) on 20 hectares, operational since 2020. The municipality generates more electricity than it consumes through this park combined with municipal wind turbines.
• Solarpark Warder 11.3 MWp ground-mounted solar park located along the A7 highway in Warder (Schleswig-Holstein) on ~9 hectares. Estimated annual production ~11,000 MWh, powering ~3,300 households with CO2-free electricity. The municipality benefits from the Kommunalabgabe (municipal levy) under EEG §6.
• Solarpark Beckum 3.5 MWp ground-mounted solar park in Beckum (NRW) on 3 hectares along the A1 highway, featuring battery storage integration. Expected annual production 3,610 MWh, powering over 1,000 households. Municipality benefits from Kommunalabgabe.
• Solarpark Olpe 3.7 MWp ground-mounted solar park in Olpe (NRW) on compact construction fields (~35,000 m²) with vertically stacked modules for space optimization. Expected annual production ~3,800 MWh, powering >1,100 households.
• Solarpark Rotenburg Wümme 8.45 MWp ground-mounted solar park in Waffensen near Rotenburg Wümme (Lower Saxony) with ~14,580 modules delivering ~8,670 MWh annually. First permitted privileged PV ground-mounted project in the district of Rotenburg.

Quantifiable outcome

• Solarpark Alsweiler (Saarland): 22 MW capacity, one of the largest solar parks in the Saarland, generates more electricity than the municipality consumes.
• +4 more outcomes

Named customers5 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

Nine partnerships are on record, tiered core, major and minor.

• Solar Ruhr GruppecoreStrategic or Co-development PartnerON Energy GmbH is a company of the Solar Ruhr Gruppe. The group covers the broad solar value chain, from component wholesale to complete energy concepts for residential buildings and turnkey installation of large PV systems. The group includes PVI (photovoltaic component wholesaler) and Der Solarteur (general contractor for turnkey PV roof systems and energy concepts).
• PVI (Solar Ruhr Gruppe)coreTechnology or IntegrationPVI is the specialist wholesaler for solar components and complete systems within the Solar Ruhr Gruppe. As the component procurement partner, PVI provides the necessary PV modules, inverters, and other equipment for ON Energy's solar park projects.
• Der Solarteur (Solar Ruhr Gruppe)coreImplementation/ SI/ Consulting PartnerDer Solarteur is the general contractor for turnkey realizations of small PV rooftop systems and energy concepts. Within the Solar Ruhr Gruppe, it complements ON Energy's large-scale ground-mounted project development.
• Energieversorger (Energy Utilities)majorChannel Partner/ Reseller/ DistributorClassical energy utilities are key partners and customers of ON Energy. These utilities purchase or co-invest in solar park projects developed by ON Energy to add renewable generation assets to their portfolios.
• Stadtwerke (Municipal Utilities)majorChannel Partner/ Reseller/ DistributorRegionally anchored municipal utilities (Stadtwerke) are key partners and customers of ON Energy. These utilities benefit from local ownership models and participate in the economic opportunities of solar parks in their communities.
• Grünstromanbieter (Green Power Providers)majorChannel Partner/ Reseller/ DistributorGreen power providers purchase solar park output or co-invest in ON Energy projects to supply renewable electricity to end consumers.
• Energiegenossenschaften (Energy Cooperatives)majorChannel Partner/ Reseller/ DistributorEnergy cooperatives are community-owned entities that participate in solar park projects, enabling broad citizen participation in renewable energy ownership. ON Energy actively supports the formation of energy cooperatives under legal and organizational aspects.
• EnergisminorStrategic or Co-development PartnerEnergis is a grid operator. ON Energy works with grid operators to ensure network connection requests are submitted on a solid technical basis through systematic white-area analysis, preventing inefficient resource use at the grid operator.
• BNE – Bundesverband Nachhaltige EnergienminorStrategic or Co-development PartnerON Energy is a founding signatory (Erstunterzeichnerin) of the BNE self-commitment 'Gute Planung – Best Practice für PV-Freilandanlagen'. This commitment defines standards in five areas for PV ground-mounted systems to contribute positively to climate protection, biodiversity, environmental protection, nature conservation, and rural development beyond legal requirements.

Scale indicators7 records

Recent moves4 records

Expansion highlights6 records

Broad incumbents

• RWE Renewables: RWE operates one of Europe's largest renewable energy businesses, including ground-mounted solar PV development in Germany, competing with ON Energy in the same EEG-tendered utility-scale PV segment but with global scale, balance sheet, and an in-house development, EPC, and operations stack.
• EnBW Energie Baden-Württemberg AG: EnBW is a large German utility with a substantial solar PV and wind development arm operating across multiple segments including ground-mounted PV parks - directly competes with ON Energy for EEG tenders, land, and municipal partnerships but at materially larger scale and as part of a broader energy portfolio.

Direct peers

• juwi AG: juwi is one of Germany's leading independent developers of utility-scale renewable energy projects, with a large pipeline of ground-mounted solar parks developed for municipalities, utilities and energy cooperatives - directly comparable to ON Energy on segment, business model (project development plus turnkey EPC), and target customers.
• PNE AG: PNE is a German listed developer of wind and solar ground-mounted projects, developing and operating utility-scale PV parks for sale to operators and utilities - directly comparable to ON Energy on project-development-plus-EPC model, EEG tender participation, and German market focus.
• Energiekontor AG: Energiekontor is a German independent developer and long-term operator of wind and ground-mounted solar parks, active in project planning, construction, and operation - a direct peer to ON Energy on utility-scale PV project development, project structuring and long-term operation in Germany.
• IBC Solar: IBC Solar is a German mid-sized solar project developer and EPC contractor that develops and builds ground-mounted PV parks, primarily serving municipal utilities, energy cooperatives, and investor/independent power producer customers - directly comparable to ON Energy on geography, product (utility-scale PV Freiflächenanlagen), and customer type.
• Enerparc AG: Enerparc is a Hamburg-based specialist EPC and project developer for utility-scale ground-mounted PV plants in Germany and internationally - a direct peer competing for the same EEG-tendered projects, the same municipal and utility off-takers, and the same land origination pipeline as ON Energy.
• 7C Solarparken AG: 7C Solarparken is a German operator and developer of utility-scale ground-mounted solar parks, generating revenue through power sales and project sales - a direct peer competing in the same German ground-mounted PV segment with overlapping customer base (utilities, investors).
• Wattner SunCapital: Wattner develops and operates utility-scale ground-mounted solar parks in Germany and offers citizen-investment participation models - directly comparable to ON Energy's teilhabeorientierte Betreibermodelle and Energiegenossenschaften initiatives and similar mid-scale German ground-mounted PV footprint.
• MaxSolar GmbH: MaxSolar is a German mid-sized EPC and developer of ground-mounted PV parks with strong municipal and cooperative utility customer base - directly comparable to ON Energy on project type, scale, target off-takers, and participation-oriented operating models.

Market position

Strengths6 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights6 records

Customer concentration

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Revenue estimate

Valuation estimate

Number of profiles

Profiles7 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 On Energy Gmbh