What GREEN SOURCE does

GREEN SOURCE GmbH is a Vienna-based photovoltaic project developer founded in 2006 that specializes in the full-lifecycle development, financing, construction, and operation of ground-mounted solar PV projects and battery energy storage systems (BESS) across Central and Eastern Europe. Its core technology is utility-scale ground-mounted PV combined with BESS integration — most notably a 620 MWp PV plant paired with a 1,000 MWh BESS installation announced in Bulgaria, plus smaller operational BESS assets in Romania. Across its portfolio the company has developed 30 projects totaling 451 MWp of installed PV capacity, 347 MWh of BESS, and EUR 820 million of structured investment across the Czech Republic, Slovakia, Croatia, Romania, Hungary, Bulgaria, and Serbia, with a stated 1.5 GW pipeline to be developed over the next four years.

The company serves private and institutional investors with an integrated service offering covering site selection and project development (6-18 months), financing structuring (3-6 months), construction supervision (2-6 months), independent project review and due diligence (1-3 months), and long-term operations and maintenance over 15-year horizons. Revenue is generated through development fees and service charges on bespoke projects, recurring O&M contracts on the operational portfolio, and equity stakes held in specific projects (e.g., 40% in Amnis, 10.5% in Gamma, partial ownership of Hungarian projects) that generate returns from electricity generation and exit events. The distribution model is direct and relationship-driven: a Vienna headquarters team works with country managers embedded in Hungary, Bulgaria/Serbia, and Slovakia, supported by a network of construction, legal, and financial partners including a long-standing tax and audit relationship with BDO Austria.

The company's competitive positioning rests on a multidisciplinary shareholder team that combines banking, legal, and technical expertise, accumulated regulatory and permitting knowledge across six-plus CEE jurisdictions, and a 30-project reference portfolio that functions as a credibility asset when raising new investor capital. There is no disclosed revenue, no public funding rounds, and no PE/VC ownership; the company remains privately held with Anna Hofmann as Managing Director and majority shareholder alongside several minority shareholders including the Chairman and founding investors.

Name

GREEN SOURCE

Legal name

GREEN SOURCE GmbH

Website

https://greensource.at

Company type

Private

Founded year

2006

Operating status

Operating

Headcount range

11–50 employees

Short description

GREEN SOURCE is a Vienna-based photovoltaic project developer founded in 2006 that develops, finances, constructs, and operates ground-mounted solar PV and battery energy storage projects across Central and Eastern Europe for private and institutional investors, with 30 projects totaling 451 MWp of installed capacity.

Ownership category

akta.pro rank

Product category

Photovoltaic Project Development

NAICS

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

SIC

Cogeneration Services & Small Power Producers (4991)

akta.pro primary industry

Solar EPC & Construction (Utility-Scale, Rooftop, Balance of System) (EUAMABAB)

akta.pro secondary industries

Project Finance & Capital Structuring (Debt/Tax Equity/Project Bonds) (EUAMAAAD), Renewable Energy Infrastructure (FSAAAKAG), Environmental & Permitting Compliance During Construction (Erosion Control, Wildlife Mitigation, Monitoring) (EUAMAFAM)

Keywords

• Photovoltaic project development
• Solar energy development
• Battery energy storage systems
• Renewable energy investment
• Project financing services

Headquarters

HQ city

Vienna

HQ country

Austria

HQ region

Europe

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. Project Development Services: GREEN SOURCE develops PV projects for private and institutional investors, providing site selection, financing, construction supervision, and ongoing operation and maintenance. Revenue is earned through development fees and service charges.
2. Project Ownership/Stakeholding: The company takes ownership stakes in projects (e.g., 40% in Amnis, 10.5% in Gamma, partial ownership in Hungary projects), generating returns through electricity generation and eventual exit.
3. Operations & Maintenance (O&M): Ongoing technical and financial management of PV plants including monitoring, reporting, troubleshooting, and optimization services typically over 15-year operational periods.

Go-to-market motion1 record

Distribution channels2 records

Marketing channels4 records

Core offering

GREEN SOURCE develops, finances, builds, and operates ground-mounted photovoltaic projects and Battery Energy Storage Systems for private and institutional investors across Central & Eastern Europe. The company delivers the full project lifecycle — site selection, project development, financing structuring, construction supervision, due diligence, and 15-year operations and maintenance — and takes equity stakes in selected projects to generate returns.

Product overview

GREEN SOURCE is a photovoltaic project developer offering an integrated service portfolio covering the full project lifecycle: site selection and project development, financing structuring, construction supervision, project review/due diligence, and ongoing operations/maintenance. The company specializes in ground-mounted PV projects and battery energy storage systems (BESS) for private and institutional investors in Central and Eastern Europe. With 30 completed projects totaling over 451 MWp and 347 MWh BESS capacity, their services are delivered as a comprehensive turnkey offering rather than modular products, combining development, financing, technical oversight, and long-term operational management.

Differentiator

Problem solved

Functional benefit

Products and services

• Site Selection & Project Development (Standortselektion & Projektentwicklung)
• Project Financing (Finanzierung)
• Construction Supervision (Baubegleitung)
• Project Review / Due Diligence (Projektprüfung)
• Operations & Maintenance (Laufender Betrieb)
• Ground-Mounted Photovoltaic (PV) Projects
• Battery Energy Storage Systems (BESS)

Quantifiable outcome

• 820 Mio. EUR total investment volume across portfolio
• +4 more outcomes

Segments3 records

Ideal customer profiles2 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature2 records

Partnerships

Two partnerships are on record, tiered supporting.

• BDO AustriasupportingImplementation/ SI/ Consulting PartnerBDO is an international auditing and tax consulting firm. Partner Berndt Zinnöcker advises GREEN SOURCE on all tax and accounting related issues since company foundation. Provides tax advisory and auditing services.
• Partner Companies NetworksupportingOthersGREEN SOURCE utilizes a broad network of experienced partner companies for various project requirements including construction, legal, technical, and financial services across CEE markets.

Scale indicators8 records

Recent moves6 records

Expansion highlights5 records

Broad incumbents

• Encavis AG: Hamburg-based, MDAX-listed operator of solar and onshore wind plants across Europe. Comparable on European solar/wind IPP model, though operating at significantly larger scale and with broader technology mix.
• Lightsource bp: London-headquartered global solar developer and operator majority-owned by BP, with extensive European utility-scale solar activity. Comparable in solar development and ownership model, though backed by far deeper capital and broader geographic reach.
• BayWa r.e. Munich-based global renewable energy developer, trader, and operator with a substantial European solar and wind project pipeline. Comparable in PV development activities but operates at a much larger scale and across wider geographies.
• Enel Green Power: Rome-based global renewable energy developer and IPP and subsidiary of Enel Group, operating across wind, solar, and storage in Europe and globally. Comparable in PV and BESS development activities but at vastly greater scale and geographic breadth.
• RWE Renewables: Essen-headquartered European renewable energy developer and IPP with significant solar, wind, and storage activity across CEE markets. Comparable in PV development and operating geographies but operates as part of a much larger integrated utility.

Direct peers

• Photon Energy N.V. Amsterdam-listed solar developer and IPP with a strong Central & Eastern European footprint across Hungary, Romania, Czech Republic, and Slovakia. Closely comparable business model combining project development, IPP ownership, and O&M across the same CEE geographies GREEN SOURCE serves.
• ib vogt GmbH: Berlin-based utility-scale solar developer with a similar full-lifecycle service offering spanning development, financing, EPC oversight, and operations across European markets. Comparable on integrated developer/operator model although operating at larger scale.
• Sonnedix: Global solar IPP headquartered in London and owned by Macquarie Asset Management, developing and operating PV plants across Europe. Comparable IPP/operator model, although with a larger portfolio and broader geographic footprint.
• SOLARPARKS GmbH: German mid-sized solar project developer with integrated development, financing, and operation services. Comparable full-lifecycle developer model, although focused primarily on the German-speaking market.
• 7C Solarparken AG: German-listed operator of utility-scale solar parks across Europe, focused on owning and operating PV assets for institutional investors. Closely comparable IPP-only business model, though smaller in scale.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks5 records

Key highlights6 records

Customer concentration

• LinkedInlinkedin.com/company/green-source-consulting-gmbh

Revenue estimate

Valuation estimate

Number of profiles

Profiles14 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 GREEN SOURCE