Solarcomplex
Solarcomplex AG is a citizen-owned German renewable energy company founded in 2000 that develops, builds, and operates solar parks, wind parks, and district heating networks across the Lake Constance region for municipalities, industrial enterprises, and energy utilities, while offering ecological investment products to over 1,000 shareholders.
- Company typePrivate
- Founded2000
- HeadquartersSingen, Germany
- Headcount11–50
- GTM typeB2B
- OfferingServices
What Solarcomplex does
Solarcomplex AG is a citizen-owned, non-listed German stock corporation (AG) founded in 2000 and headquartered in Singen, Baden-Württemberg, that develops, builds, and operates renewable energy infrastructure across the Lake Constance region. Its portfolio spans rooftop and ground-mounted photovoltaic systems (single projects up to 16 MW at Döggingen and 6.2 MW rooftop at Zollern), wind parks (notably Windpark Länge at 34.2 MW under construction), and a network of district heating systems incorporating solar thermal, wood chips, biogas, and lake thermal energy (Seethermie), with the DiWa network (Dingelsdorf/Wallhausen, 16 km, 370 connections, 22 million EUR investment) being the largest. Technical differentiators include the proprietary 'Solarstrom Direkt' direct-PPA model delivering solar electricity to industrial rooftops below grid fee cost, absorption heat pumps recovering wood-chip boiler exhaust, and the company's first solar-plus-storage park combining 3.3 MW PV with 2.5 MW / 11 MWh battery near Rottweil.
The company operates a hybrid business model: (1) project development and EPC services for municipalities and utilities such as Elektrizitätswerke Schönau (EWS) where solarcomplex builds but does not own the asset, (2) long-term ownership and operation of its own plant portfolio generating recurring revenue from EEG feed-in tariffs, direct marketing, and corporate PPAs (e.g., 10-year PPA with Rolls-Royce Power Systems), and (3) capital participation products including shares (Aktien), profit participation certificates (Genussscheine at 2.5% fixed interest), and bearer debentures offered to a community of over 1,000 shareholders. Headcount stands at approximately 50 employees, the 2025 balance sheet total reached 128.3 million EUR (up from 104.6 million EUR in 2024), and pre-tax profit grew to 2.8 million EUR.
Solarcomplex serves four primary customer segments: commercial and industrial enterprises (Rolls-Royce, Constellium, Zollern) for direct PPA and rooftop PV; municipalities (Gottmadingen, Gailingen, Stadtwerke Konstanz) for public renewable energy infrastructure; energy companies (EWS Schönau) for EPC contracting; and citizens/retail investors for ecological investment products. Sales cycles are relationship-driven and regional, with project tendering, feasibility studies, and multi-year contracts. The company explicitly targets 100% renewable energy supply for the Lake Constance region by 2030 and has realized approximately 200 million EUR of cumulative project investment since 2000.
Solarcomplex firmographics
Firmographics- Name
- Solarcomplex
- Legal name
- solarcomplex AG
- Website
- https://solarcomplex.de
- Company type
- Private
- Founded year
- 2000
- Operating status
- Operating
- Headcount range
- 11–50 employees
- Short description
- Solarcomplex AG is a citizen-owned German renewable energy company founded in 2000 that develops, builds, and operates solar parks, wind parks, and district heating networks across the Lake Constance region for municipalities, industrial enterprises, and energy utilities, while offering ecological investment products to over 1,000 shareholders.
- Ownership category
- akta.pro rank
Solarcomplex industry classification
Industry- Product category
- Renewable Energy Project Development & Operation
- NAICS
- Solar Electric Power Generation (221114), Biomass Electric Power Generation (221117), Wind Electric Power Generation (221115)
- SIC
- Cogeneration Services & Small Power Producers (4991), Electric, Gas & Sanitary Services (4900)
- akta.pro primary industry
- Solar EPC & Construction (Utility-Scale, Rooftop, Balance of System) (EUAMABAB)
- akta.pro secondary industries
- Renewable Distributed Generation (Rooftop/Onsite Solar, Small Wind, Small Hydro) (EUACALAJ), Distributed Generation (DG) Solar & Small Wind (EUAMAJAD), Solar Balance-of-Plant EPC (Piles/Foundations, Trenching, Combiner Networks) (EUAEADAJ)
Keywords
Where Solarcomplex is headquartered
LocationHeadquarters
- HQ city
- Singen
- HQ country
- Germany
- HQ region
- Europe
Offices1 record
Markets served
Solarcomplex business model
Business model- GTM type
- B2B
- Offering type
- Services
- Cost components
- Personnel, Operations, Infrastructure, Supply Chain, Technology or R&D, Marketing or Sales
Revenue model
- Energy Plant Operation: Solarcomplex operates its own portfolio of solar parks, wind parks, and district heating networks. Revenue is generated from selling electricity (via EEG feed-in tariffs, direct marketing, or corporate PPAs) and heat to end customers. Long-term plant ownership creates recurring revenue streams.
- EPC / Project Development: Solarcomplex develops, plans, and builds solar parks and heating networks on behalf of municipalities, industrial companies, and energy companies (e.g., EWS Schönau, Gottmadingen municipality, Gailingen municipality). Revenue is earned as project fees or EPC contracts.
- Capital Participation Products: Solarcomplex raises equity capital by issuing new shares, profit participation certificates (Genussscheine), and bearer bonds to citizens and investors. Proceeds fund the growing plant portfolio. Revenue is capital raised, not recurring, but repeated as growth financing rounds.
Pricing tiers
| Model | Billing | Price |
|---|---|---|
| One time/ perpetual license | Multi-year contract | Genussscheine (Profit Participation Certificate) - Öko-Festgeld |
| One time/ perpetual license | Multi-year contract | New Share Issuance 2024 |
| One time/ perpetual license | Multi-year contract | New Share Issuance 2022/2023 |
Go-to-market motion3 records
Distribution channels3 records
Marketing channels6 records
Solarcomplex product offering
Product offeringCore offering
Solarcomplex AG plans, builds, and operates renewable energy plants for electricity and heat generation, including rooftop and ground-mounted photovoltaic systems, wind parks, biogas facilities, and district heating networks. It also offers direct solar power supply (Solarstrom Direkt) to industrial customers via on-site PPAs, and enables citizen participation through shares, profit participation certificates (Genussscheine), and bearer debentures. The company serves as both project developer/EPC contractor and long-term plant operator in the Lake Constance region of Germany.
Product overview
Solarcomplex AG operates as a regional renewable energy company offering a comprehensive portfolio of products and services focused on solar, wind, and heating energy. The core product offerings include rooftop and ground-mounted photovoltaic systems (Photovoltaik Dachanlagen and Freilandanlagen), wind power installations (Windkraftanlagen), district heating networks (Wärmenetze/Nahwärmenetze) incorporating innovative technologies like lake thermal energy (Seethermie), and biogas plants (Biogasanlagen). The company also offers an innovative direct solar power model (Solarstrom Direkt) delivering solar electricity directly to industrial customers. Additionally, solarcomplex provides financial products for capital participation including profit participation certificates (Genussscheine), bearer debentures (Inhaberschuldverschreibung), and shares (Aktien) traded on their proprietary platform. The company has recently expanded into battery storage integrated with solar parks. Services include emergency heating support, meter reading, and infrastructure mapping. With over 20 years of experience since founding in 2000, solarcomplex has developed approximately 50+ MW of solar installations, multiple wind farms, around 20 heating networks, and offers citizen investment opportunities in renewable energy projects.
Differentiator
Problem solved
Functional benefit
Products and services
- Photovoltaik Dachanlagen (Rooftop PV Systems)
Quantifiable outcome
- 2025 annual result after tax, interest, and depreciation: 2.8 million EUR (Vorjahr 2.4 million EUR)
- +5 more outcomes
Companies that use Solarcomplex
Customer profileNamed customers8 records
Segments4 records
Ideal customer profiles4 records
Solarcomplex technology and API
TechnologyTechnology focussed No
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Feature4 records
Solarcomplex partnerships and signals
Strategic signalPartnerships
Five partnerships are on record, tiered core and minor.
- Elektrizitätswerke Schönau (EWS) - Additional ProjectscoreEWS commissioned two additional solar parks in Niedereschach (Schwarzwald-Baar district) and Trichtingen (Rottweil district) with combined capacity of ~11 MW. Part of ongoing strategic partnership.
- Hegauwind GroupminorSolarcomplex is commissioned by Hegauwind Group for project development of Windpark Brand (3 × Nordex N-163 turbines). Solarcomplex holds a 1/11 stake in Windpark Verenafohren which it developed for Hegauwind.
- Elektrizitätswerke Schönau (EWS)coreEWS Schönau commissioned solarcomplex for multiple solar park projects: ~4 MW at Döggingen (2023), ~16 MW at Döggingen (2025), and two parks in Niedereschach and Trichtingen (~11 MW). EWS is a key recurring client and strategic partner in solar park development.
- Bundeskartellamt / Bundesamt für Justiz (Federal Agencies)minorAs a heat network operator, solarcomplex participates in government relief programs (Soforthilfe, Wärmepreisbremse) mandated by the German government. Customer billing automatically includes government-mandated price caps and subsidies.
- Rolls-Royce Power Systems (RRPS)coreSolarcomplex and Rolls-Royce Power Systems signed a 10-year corporate PPA for the Solar park Berghof (3.7 MW, ~4 million kWh/year). Rolls-Royce uses the solar power for its Friedrichshafen facility as part of its path to climate-neutral operations. This is a flagship direct PPA deal with a major industrial company.
Scale indicators10 records
Recent moves7 records
Expansion highlights5 records
Solarcomplex competitors and assessment
Company assessmentDirect peers
- Green Planet Energy eG: Cooperative-owned renewable energy supplier in Germany (formerly Greenpeace Energy). Comparable to solarcomplex as a values-driven renewable energy provider with deep citizen/community ownership and direct marketing of renewable electricity to end customers.
- JUWI GmbH: One of Germany's largest wind and solar project developers and EPCs. Directly comparable to solarcomplex as a renewable energy developer covering utility-scale solar parks, wind farms, and increasingly storage — competing for the same municipal and industrial customers in southern Germany.
- IBC Solar AG: German solar EPC and project developer active in utility-scale and commercial rooftop PV. Directly comparable on the photovoltaic side of solarcomplex's business, with similar target customers in commercial and industrial segments and project-development capabilities.
- GP Joule: German integrated renewable energy developer covering wind, solar, biomass, and sector coupling (including heat and e-mobility). Highly comparable to solarcomplex's multi-technology renewables-plus-heating platform and serves similar municipal and commercial customers across Germany.
- Elektrizitätswerke Schönau (EWS): Citizen-owned German renewable energy utility. Overlaps with solarcomplex as both customer (EWS commissions solarcomplex for EPC) and competitor (EWS develops its own renewable assets). Both are regional, citizen-anchored renewable energy companies in Baden-Württemberg with similar mission and customer segments.
- Naturstrom AG: German independent renewable energy supplier with a focus on citizen participation. Operates its own wind and solar portfolio, supplies green electricity to households and businesses, and competes for similar eco-conscious customer and investor segments as solarcomplex.
Broad incumbents
- EnBW Energie Baden-Württemberg AG: Dominant integrated utility in Baden-Württemberg and a major developer of wind, solar, and grid infrastructure. While much larger and broader in scope, it is the principal incumbent competitor for municipal energy-transition mandates and renewable project tenders in solarcomplex's home region.
Regional players
- badenova AG & Co. KG: Regional energy utility headquartered in Freiburg, serving Baden and the Upper Rhine region. Comparable as a regional renewable energy operator in southern Germany with overlapping municipal and commercial customer segments, though larger and more diversified.
- Stadtwerke Konstanz GmbH: Municipal utility of Konstanz and shareholder/strategic partner of solarcomplex. Operates as a regional energy supplier with growing renewable generation; partly a customer and partly a competitor for municipal renewable projects in the Lake Constance area.
Emerging players
- Lichtblick SE: Hamburg-based green electricity and flexible-energy supplier with a strong citizen-engagement narrative. Comparable in mission (decentralized, citizen-friendly renewables) and in selling renewable power and flexibility services, though operating from a different region and with a different scale.
Market position
Strengths5 records
Weaknesses5 records
Competitive moat5 records
Key risks7 records
Key highlights7 records
Customer concentration
Solarcomplex social profiles
Digital presenceSolarcomplex financial estimates
Financial estimateRevenue estimate
Valuation estimate
Solarcomplex leadership team
Management profileNumber of profiles
Profiles6 records
Solarcomplex funding detail
Funding detailFunding overview
Funding rounds
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
Solarcomplex M&A and investment
M&A and investmentM&A
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about Solarcomplex
What does Solarcomplex do?
Solarcomplex AG plans, builds, and operates renewable energy plants for electricity and heat generation, including rooftop and ground-mounted photovoltaic systems, wind parks, biogas facilities, and district heating networks. It also offers direct solar power supply (Solarstrom Direkt) to industrial customers via on-site PPAs, and enables citizen participation through shares, profit participation certificates (Genussscheine), and bearer debentures. The company serves as both project developer/EPC contractor and long-term plant operator in the Lake Constance region of Germany.
Is Solarcomplex a public or private company?
Solarcomplex is a private company. It is classified as founder individual operated bootstrapped and is currently operating.
When was Solarcomplex founded?
Solarcomplex was founded in 2000. It employs 11 to 50 people.
Where is Solarcomplex based?
Solarcomplex is headquartered in Singen, Germany, in the Europe region.
How does Solarcomplex make money?
Three revenue lines are on record. Energy Plant Operation is the primary driver. The others are EPC / Project Development and capital Participation Products.
Who are Solarcomplex's main competitors?
Direct peers on record are Green Planet Energy eG, JUWI GmbH, IBC Solar AG, GP Joule, Elektrizitätswerke Schönau (EWS) and Naturstrom AG. EnBW Energie Baden-Württemberg AG is listed as a broad incumbent. Regional players are badenova AG & Co. KG and Stadtwerke Konstanz GmbH. Lichtblick SE is listed as an emerging player.
Does Solarcomplex have an API?
No public API is recorded for Solarcomplex.
What industry is Solarcomplex in?
Solarcomplex's product category is Renewable Energy Project Development & Operation. Its primary akta.pro industry code is EUAMABAB, Solar EPC & Construction (Utility-Scale, Rooftop, Balance of System), with a secondary code of EUACALAJ, Renewable Distributed Generation (Rooftop/Onsite Solar, Small Wind, Small Hydro). Its NAICS code is 221114 and its SIC code is 4991.