Energiegewinner

What Energiegewinner does

Energiegewinner is a German photovoltaic systems integrator headquartered in Cologne that delivers full-service solar, battery storage, and EV charging infrastructure to residential, commercial, municipal, and social-sector customers across Germany. The operating entity, Energiegewinner Technik GmbH, was founded in 2017 as the engineering and crafts arm of the Energiegewinner eG citizen energy cooperative (Bürgerenergie-Genossenschaft, founded 2010) and was integrated into the heimWatt GmbH group in 2025. Projects span small residential systems (5-20 kWp) through utility-scale ground-mounted installations exceeding 50 MWp, configured as rooftop, ground-mounted, façade, carport, multi-family Mieterstrom, and solar fence (PV-Zaun) deployments. The technology stack combines Tier-1 inverter and storage components from manufacturers including SolarEdge, Huawei, Fronius, Sungrow, Enphase, and Astronergy with Aurora Solar planning software for pre-sales yield simulation.

The business model is predominantly project-based, one-time installation revenue from EPC contracts with bespoke quotations following site assessment and engineering, augmented by recurring revenue from in-house monitoring, operations, and maintenance contracts and from the cooperative's share-based membership financing model. Go-to-market is sales-led and consultative, ranging from inside-sales phone and website inquiry handling for residential customers to dedicated enterprise field sales with technical sales engineers for commercial and municipal projects (30 kWp to 50+ MWp). Distribution is direct only — no self-serve, e-commerce, or third-party resellers — and is augmented by a community referral channel through the 2,900-member Energiegewinner eG cooperative and the Bürgerwerke cooperative partnership. Recent additions include the heimWatt smartY home energy management system, EV charging parks of up to 72+ points and 792 kW, and dedicated delivery tracks for municipalities and non-profit social organizations (Soziale Träger).

The company employs more than 60 staff including 20+ engineers across project planning, order processing, and electrical engineering, plus installation craftsmen and a dedicated monitoring team — a workforce that is modest in absolute terms but enables true vertical integration from feasibility through O&M. Named customer references span automotive manufacturing (Bosal Deutschland, Valeo Klimasysteme, Thunderbike), paper manufacturing (L. Jansen Buntpapierfabrik), commercial real estate (Kabelwerk Businesspark), municipal government (Stadt Krefeld, Herford Deponie, Rathaus Herzogenrath), education (Tami-Oelfken-Schule, Helmholtz Gymnasium), housing cooperatives (EHRENFELDER Wohnungsgenossenschaft), and industrial operators (CFM Schiller).

Name

Energiegewinner

Legal name

Energiegewinner Technik GmbH

Website

https://energiegewinner.de

Company type

Private

Founded year

2017

Operating status

Operating

Headcount range

11–50 employees

Short description

Energiegewinner is a German photovoltaic EPC integrator based in Cologne delivering full-service solar, battery storage, and EV charging installations to residential, commercial, municipal, and social-sector customers nationwide, from 5 kWp residential systems to 50+ MWp ground-mounted utility projects.

Ownership category

akta.pro rank

Product category

Solar Photovoltaic Installation Services

NAICS

Solar Electric Power Generation (221114)

akta.pro primary industry

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

akta.pro secondary industries

Solar Balance-of-Plant EPC (Piles/Foundations, Trenching, Combiner Networks) (EUAEADAJ), Repowering, Augmentation & Retrofit Integration (Capacity Expansion) (EUAEAEAL), Major Component Service & Overhauls (Gearboxes, Blades, Generators, Inverters, Turbines) (EUAMAGAF), Construction Management & General Contracting (EPCM, Scheduling, QA/QC, HSE) (EUAMAFAJ)

Keywords

• Photovoltaic installation
• Battery storage solutions
• EV charging infrastructure
• Commercial solar systems
• Renewable energy services

Headquarters

HQ city

Cologne

HQ country

Germany

HQ region

Europe

Offices4 records

Markets served

GTM type

B2B and B2C

Offering type

Services

Cost components

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

Revenue model

1. PV System Installation (Commercial & Residential): One-time installation revenue from designing, engineering, and constructing photovoltaic systems for commercial businesses, municipalities, social organizations, and residential homeowners. Systems range from small residential (5–20 kWp) to large commercial and utility-scale (30 kWp to 50+ MWp). Revenue is project-based and upfront at installation.
2. Battery Storage Systems: Sale and installation of battery storage systems (residential and commercial), often bundled with PV installations. Battery systems include AC-coupled and DC-coupled options from Enphase, Sungrow, and Fronius.
3. EV Charging Infrastructure: Design, installation, and configuration of charging infrastructure including individual wallboxes for residential customers and large charging parks for commercial, municipal, and industrial customers. Includes load management systems and billing integration.
4. Monitoring, Operations & Maintenance: Ongoing monitoring, operations, and maintenance services for installed PV and battery systems. The company operates an in-house monitoring team that continuously tracks yields, error messages, and system performance, providing proactive maintenance and rapid issue resolution.
5. Genossenschaft Membership (Energiegewinner eG): The cooperative Energiegewinner eG (with 2,900 members) finances and operates renewable energy installations. Members invest in shares of the cooperative and receive returns from energy production and feed-in tariffs. The technical GmbH entity serves as the EPC contractor for cooperative-owned projects.

Pricing tiers

Go-to-market motion2 records

Distribution channels5 records

Marketing channels8 records

Core offering

Energiegewinner is a Cologne-based photovoltaic systems integrator that delivers turnkey solar PV installations, battery storage systems, and EV charging infrastructure for commercial, municipal, social-sector, and residential customers in Germany. The company manages the full project lifecycle from feasibility analysis, engineering, permitting, and installation through to ongoing monitoring and maintenance, using in-house engineering, construction, and operations teams. Project sizes range from 5 kWp residential systems to commercial and ground-mounted installations exceeding 50 MWp, with components sourced from Tier-1 manufacturers such as SolarEdge, Huawei, Fronius, Sungrow, Enphase, and Astronergy.

Product overview

Energiegewinner operates as a photovoltaic (PV) systems integrator and energy solutions provider offering a comprehensive portfolio centered on solar installations, battery storage, and EV charging infrastructure. The portfolio is organized around five product pillars: (1) Photovoltaik Gewerbe and Photovoltaik Eigenheim — commercial and residential PV installation services ranging from 5 kWp to over 50 MWp, covering roof-mounted, ground-mounted (Freifläche), facade, carport, solar fence (PV-Zaun), and multi-family building (Mieterstrom) configurations; (2) Batteriespeicher — battery storage systems offered as add-on modules to PV installations in both commercial (up to 430+ kWh) and residential sizes, including named products such as Enphase IQ Battery 5P, Sungrow SBH/SBR series, and Fronius Reserva; (3) Ladeinfrastruktur — wallbox and EV charging park solutions ranging from individual home wallboxes to large commercial charging stations (up to 72+ charging points, 792 kW total); (4) Solar Carport and PV-Zaun — alternative-area PV solutions for carports and perimeter fencing; and (5) Supporting services including the heimWatt smartY home energy management system, Öko-Strom/-Gas tariff products via the Bürgerwerke cooperative, and dedicated project services for municipalities and social institutions. The core offering is delivered as a full-service turnkey solution — from initial consulting and engineering design through installation, grid connection, and ongoing monitoring and maintenance — supported by in-house engineering, construction, and monitoring teams.

Differentiator

Problem solved

Functional benefit

Products and services

• Commercial Photovoltaik (Photovoltaik Gewerbe) Full-service commercial photovoltaic installation services for businesses, municipalities, and public-sector clients across Germany. Includes roof-mounted, ground-mounted (Freifläche), façade, carport, solar fence, and multi-family building configurations with project sizes ranging from 30 kWp to over 50 MWp.
• Residential Photovoltaik (Photovoltaik Eigenheim) Turnkey residential solar PV systems for single-family homeowners, delivered with optional wallbox integration and battery storage. Systems sized from 5 kWp to 20 kWp with in-house planning, installation, grid connection, and commissioning.
• Battery Storage Systems (Batteriespeicher) AC-coupled and DC-coupled battery storage solutions paired with PV installations to store excess solar generation for evening and peak-demand use. Commercial systems up to 430+ kWh and residential systems available using Enphase IQ Battery, Sungrow SBH/SBR, and Fronius Reserva product lines.
• Fronius Reserva Battery Storage DC-coupled battery storage system with usable capacities of 6.3–15.8 kWh, power up to 16.38 kW DC, and 204–512 V operating range. Designed to integrate with Fronius GEN24 Plus hybrid inverters; 10-year warranty.
• Sungrow SBH/SBR Battery Storage

Quantifiable outcome

• Self-consumption rate increased from 35% to 68% for CFM Schiller GmbH commercial installation with 432 kWh battery storage
• +6 more outcomes

Named customers14 records

Segments6 records

Ideal customer profiles4 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature4 records

Partnerships

Five partnerships are on record, tiered core and minor.

• heimWatt GmbHcoreStrategic or Co-development Partner · 1 January 2025Energiegewinner became part of the heimWatt GmbH group in 2025. While Energiegewinner continues to focus on large commercial projects and social organization clients, heimWatt provides residential PV and heat pump solutions under one roof. The heimWatt group operates from headquarters in Salzhausen with offices in Köln and Norderstedt, and has installed more than 1,200 PV systems.
• Energiegewinner eG (Cooperative Structure)coreStrategic or Co-development Partner · 1 January 2010Energiegewinner eG is the citizen energy cooperative (Bürgerenergie-Genossenschaft) founded in 2010 with 2,900+ members. It finances and operates renewable energy installations. The Energiegewinner Technik GmbH serves as the EPC (engineering, procurement, construction) contractor for projects owned and financed by the cooperative. This two-entity structure (cooperative + GmbH) is central to the company's business model.
• Bürgerwerke eGcoreGTM or Marketing PartnerBürgerwerke eG is a cooperative of citizen energy cooperatives (not individuals), serving as a supplier of green electricity and gas tariffs across Germany. Energiegewinner eG is a member of Bürgerwerke and refers customers who want renewable energy supply (not just PV generation) to Bürgerwerke. Bürgerwerke delivers 100% green electricity (TÜV-certified), biogas from organic residues, with no minimum contract terms and transparent pricing.
• EHRENFELDER WohnungsgenossenschaftminorStrategic or Co-development PartnerEnergiegewinner collaborated with this housing cooperative in Köln-Braunsfeld to install a 96.4 kWp PV system on five buildings with green roofs, supplying 76 apartments and 11 commercial units with approximately 87,750 kWh of solar power per year under a Mieterstrom model.
• green_planet_energy eGminorStrategic or Co-development PartnerCollaborated with green_planet_energy eG on the Köln-Braunsfeld Mieterstrom project (EHRENFELDER Wohnungsgenossenschaft) to provide sustainable, locally produced solar power to residents.

Scale indicators6 records

Recent moves8 records

Expansion highlights6 records

Direct peers

• Enpal: Berlin-based PV leasing company offering residential PV, battery, and heat pump as a subscription. Competes directly with Energiegewinner's residential and small commercial PV offering, with a different financing/ownership model.
• Zolar: Berlin-based online PV marketplace connecting homeowners with regional installer partners. Competes for the same residential PV and storage customers as Energiegewinner, primarily via digital lead generation and partner fulfillment.
• Enerix: German regional PV installer franchise covering residential, commercial, and storage across multiple Bundesländer. Highly comparable regional EPC service model with similar Tier-1 component sourcing.
• Solarwatt: Dresden-based PV manufacturer and installer offering glass-glass modules, battery systems, and full-service installation. Overlaps Energiegewinner as a German full-service PV provider with both product and EPC capabilities.
• BELECTRIC: German utility-scale solar EPC and operations provider with deep experience in ground-mounted PV up to several hundred MWp. Directly comparable on the commercial/utility-scale end of Energiegewinner's project range.
• 1Komma5°: Hamburg-based German PV installer offering residential and commercial PV, battery storage, heat pumps, and EV charging with its proprietary Heartbeat Energy Manager. Directly comparable as a German full-service PV EPC competitor.

Emerging players

• sonnen (sonnen GmbH): German battery storage specialist (now part of Shell) offering home and commercial battery systems plus virtual power plant aggregation. Comparable on the storage-attachment side of Energiegewinner's offering.

Broad incumbents

• Viessmann: German HVAC and heat pump leader that has expanded into PV and battery solutions for residential customers. Competes for combined PV+heat-pump projects with Energiegewinner/heimWatt's smartY-driven offering.
• EnBW: Major German utility with a renewable generation arm developing utility-scale solar, wind, and infrastructure projects. Overlaps Energiegewinner on commercial and municipal solar development but at much larger scale.
• E.ON: Large German energy company offering solar PV, battery storage, heat pumps, and EV charging through its customer solutions business. Competes for residential and small commercial customers across Germany.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks6 records

Key highlights7 records

Customer concentration

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Revenue estimate

Valuation estimate

Number of profiles

Profiles7 records

Subsidiaries1 record

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 Energiegewinner