ADLER Solar
ADLER Solar is a Bremen-based Meisterbetrieb founded in 2008 that designs, installs, and services photovoltaic systems, battery storage, heat pumps, and EV charging infrastructure for residential and commercial customers across Northwest Germany.
- Company typePrivate
- Founded2008
- HeadquartersBremen, Germany
- Headcount51–100
- GTM typeB2B and B2C
- OfferingServices
What ADLER Solar does
ADLER Solar GmbH is a Bremen-based Meisterbetrieb (master craftsman business) founded in April 2008 by Gerhard Cunze, operating as a full-service provider of photovoltaic systems, battery storage, heat pumps, EV charging infrastructure, and emergency power solutions for residential and commercial customers across Northwest Germany. The company originated as a Europe-wide PV module service provider — performing decommissioning, quality management, and damage assessments, with proprietary methods including the Crack-Age-Test and one of the earliest electroluminescence QA procedures for installed PV modules — before pivoting in 2017 to new plant construction. The technical stack combines Sigenergy SigenStor batteries (5-48 kWh, up to 10,000 charge cycles), Sigenergy hybrid inverters (5-20 kW), and a Gateway for intelligent energy and emergency power management, integrated with clever-pv optimization software and inverters from GoodWe and Huawei.
The business runs on a project-based revenue model: quote-driven one-time installation sales for residential and commercial PV, storage, heat pump, and wallbox deployments, supplemented by professional-services recurring revenue from maintenance, repowering of legacy systems, and operation management and monitoring of large commercial PV plants. Pricing is not publicly disclosed but typical residential system ticket sizes range from EUR 9,000 to EUR 22,000, with self-consumption rates of 60-90% achievable when PV is paired with storage, heat pumps, and EV chargers. ADLER Solar employs approximately 100 staff across locations in Bremen, Eschwege, Oldenburg, and Rotenburg (Wümme), and distributes through its own showroom, field sales engineers, an inside-sales team, a website lead-generation funnel, regional events, and multi-channel digital marketing. The company is owner-operated, with no disclosed external equity backing; it holds historical joint-venture interests in pvXchange Trading GmbH and ADLER Solar Works (Yokohama, Japan).
ADLER Solar firmographics
Firmographics- Name
- ADLER Solar
- Legal name
- ADLER Solar GmbH
- Website
- https://adlersolar.de
- Company type
- Private
- Founded year
- 2008
- Operating status
- Operating
- Headcount range
- 51–100 employees
- Short description
- ADLER Solar is a Bremen-based Meisterbetrieb founded in 2008 that designs, installs, and services photovoltaic systems, battery storage, heat pumps, and EV charging infrastructure for residential and commercial customers across Northwest Germany.
- Ownership category
- akta.pro rank
ADLER Solar industry classification
Industry- Product category
- Solar Energy Installation Services
- NAICS
- Solar Electric Power Generation (221114)
- SIC
- Electrical Work (1731)
- akta.pro primary industry
- Renewable Energy Industrial Facilities Construction (Solar, Wind, Storage) (IMAFADAD)
- akta.pro secondary industries
- Solar Roofing & Roof-Mounted PV Systems (IMADAFAO), PV Balance of System (BOS) & Electrical Infrastructure (Inverters, Transformers, Cabling, Substations) (EUACAGAC), Solar Mounting, Racking & Trackers (Fixed-Tilt, Single/Dual-Axis, Rooftop Mounts) (EUAMABAF)
Keywords
Where ADLER Solar is headquartered
LocationHeadquarters
- HQ city
- Bremen
- HQ country
- Germany
- HQ region
- Europe
Offices6 records
Markets served
ADLER Solar business model
Business model- GTM type
- B2B and B2C
- Offering type
- Services
- Cost components
- Personnel, Operations, Marketing or Sales, Technology or R&D, Infrastructure, Supply Chain
Revenue model
- Photovoltaic (PV) system sales and installation: Complete PV system sales and installation for residential and commercial buildings, including planning, mounting, and commissioning.
- Battery storage systems: Sale and installation of battery storage systems (SigenStor and other brands) for residential and commercial energy storage.
- Heat pump systems: Heat pump sales and installation for efficient and sustainable building heating, often combined with PV systems.
- EV charging infrastructure (Wallbox): Sale and installation of wallboxes and charging infrastructure for electric vehicles, combinable with PV systems for self-generated solar charging.
- Repowering services: Modernization of existing PV installations to improve yields and extend operational lifespan for older systems.
- Operation management and monitoring: Ongoing monitoring, maintenance, and operation management services for large PV installations for commercial customers.
- Maintenance services: Maintenance services for solar installations including inspections, repairs, and performance optimization.
Pricing tiers
| Model | Billing | Price |
|---|---|---|
| One time/ perpetual license | Multi-year contract | Residential PV system (single-family home) |
Go-to-market motion2 records
Distribution channels6 records
Marketing channels14 records
ADLER Solar product offering
Product offeringCore offering
ADLER Solar is a regional Meisterbetrieb (master craftsman business) that plans, sells, and installs photovoltaic (PV) systems for residential and commercial customers across Northern Germany. Offerings center on PV systems complemented by battery storage (notably Sigenergy SigenStor), heat pumps, wallbox EV charging, and emergency power backup, with full-service delivery covering consultation, planning, installation, commissioning, maintenance, and repowering.
Product overview
ADLER Solar is a Meisterbetrieb (master craftsman business) founded in 2008, offering comprehensive energy solutions centered on photovoltaic systems for residential and commercial customers in northern Germany. The core product portfolio centers on PV systems with complementary modules including batteries, heat pumps, wallboxes, and emergency power systems. The product line features Sigenergy-branded components (SigenStor batteries with 5-48 kWh capacity, hybrid inverters rated 5-20 kW, and the Sigenergy Gateway for system integration), which integrate with the clever-pv optimization software. Services encompass installation, maintenance, repowering of older systems, commercial charging infrastructure, and operational management of large-scale PV plants. The company positions itself as a full-service provider from consultation through installation and ongoing support.
Differentiator
Problem solved
Functional benefit
Products and services
- Photovoltaic (PV) Systems
- Heat Pump Systems (Wärmepumpe) Heat pump systems for efficient and sustainable building heating, combinable with photovoltaic installations to maximize self-consumption of self-generated solar energy.
- Battery Storage Systems (Batteriespeicher) Battery storage systems for storing excess solar power generated during the day for use during evening hours, increasing self-consumption rates up to 60-90%.
- Wallbox (EV Charging Station) Electric vehicle charging stations for home use, enabling charging of EVs using self-generated solar power from the PV system.
- Emergency Power Systems (Notstrom) Emergency backup power systems that maintain electricity supply during grid outages using battery storage technology, with automatic activation upon grid failure detection.
- Sigenergy SigenStor Battery Systems Sigenergy SigenStor battery storage systems with capacities from 5 kWh to 48 kWh, featuring intelligent battery management system (BMS) with up to 10,000 charging cycles and approximately 10-15 year lifespan.
- Sigenergy Hybrid Inverters Hybrid inverters that convert DC from solar modules to AC for household use while enabling battery storage integration, with power ratings from 5 kW to 20 kW combining normal inverter and battery inverter functions in one device.
- Sigenergy Gateway Energy Management Controller Central control unit that connects all solar system components for intelligent energy management, monitoring, and optimization of energy flows, with Smart Home integration and dynamic electricity tariff support.
- clever-pv Optimization Software Software solution for maximizing solar system energy yields through real-time data analysis and intelligent algorithms, integrating with Huawei, GoodWe, and Sigenergy products.
- Repowering Service Modernization service for existing older photovoltaic systems to improve performance and extend operational lifespan.
- Maintenance and Service (Wartung & Service) Ongoing maintenance and service for photovoltaic installations to ensure optimal performance and longevity, including inspections, repairs, and performance optimization.
- Operation Management and Monitoring (Betriebsführung) Operational management and monitoring services for large-scale commercial photovoltaic installations, providing ongoing oversight, performance tracking, and issue resolution.
- Commercial Charging Infrastructure (Ladeinfrastruktur für Unternehmen) Commercial charging infrastructure solutions including wallboxes, fast chargers, and load management systems for employees, fleets, and customers at commercial sites.
- PV Financing (Finanzierung) Financing options for photovoltaic installations provided through partner relationships.
Quantifiable outcome
- Self-consumption rates of 60-90% achievable with PV storage and additional consumers (heat pumps, wallboxes)
- +3 more outcomes
Companies that use ADLER Solar
Customer profileNamed customers1 record
Segments2 records
Ideal customer profiles2 records
ADLER Solar technology and API
TechnologyTechnology focussed No
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Integration3 records
Feature8 records
ADLER Solar partnerships and signals
Strategic signalPartnerships
14 partnerships are on record, tiered core, major and minor.
- Bundesverband des Solarhandwerks (BDSH)coreADLER Solar is a founding member of BDSH, the German federal association of solar trade. This partnership demonstrates the company's commitment to professional standards and industry leadership in the solar installation sector.
- GoodWecoreSince 2019, ADLER Solar has been a partner in the after-sales services sector for GoodWe, a major inverter manufacturer. The partnership was established following GoodWe's strategic partnership with pvXchange, the world's largest trading platform for PV modules and components.
- pvXchange Trading GmbHmajorFollowing the 2014 strategic partnership with pvXchange, ADLER Solar participated in the brand's restart through founding pvXchange Trading GmbH together with platform co-founder Martin Schachinger in 2015.
- SigenergycoreADLER Solar offers Sigenergy products including SigenStor batteries (5-48 kWh), hybrid inverters (5-20 kW), and the Sigenergy Gateway for intelligent energy management and emergency power solutions.
- clever-pvcoreSoftware partnership offering clever-pv optimization software that maximizes energy yields of solar systems through real-time data analysis, working with Huawei, GoodWe, and Sigenergy products.
- HuaweicoreIntegration partnership with Huawei for energy management solutions, working with clever-pv optimization software for solar system performance maximization.
- Stadtwerke RotenburgminorPartnership with Stadtwerke Rotenburg (municipal utility) for heat pump solutions and regional energy services.
- I|2|B - IDEA TO BUSINESSminorPartnership with I|2|B for business development and idea-to-business consulting services.
- #machWatt (Solar campaign)minorParticipation in the #machWatt solar campaign, a public awareness initiative. ADLER Solar participates in events like Nachhaltigkeitsmarkt where the Solarkampagne #machWatt and Verbraucherzentrale Bremen energy consulting are present.
- Verbraucherzentrale BremenminorCollaboration with Verbraucherzentrale Bremen for energy consulting at public events, providing consumers with professional energy advice.
- Heidelberger BallschuleminorSponsorship partnership with Heidelberger Ballschule, a sports education program.
- ATSV HabenhausenminorSports sponsorship partnership with ATSV Habenhausen local sports club.
- Umwelt Unternehmen BremenminorPartnership with the Umwelt Unternehmen Bremen environmental business initiative, demonstrating commitment to sustainability.
- Energie ExpertenminorPartnership with Energie Experten network for energy efficiency consulting and professional services.
Scale indicators11 records
Recent moves14 records
Expansion highlights6 records
ADLER Solar competitors and assessment
Company assessmentDirect peers
- Enerix: German regional solar installer franchise with local Meisterbetrieb partners across Germany. Closely comparable business model (regional PV + storage installation) directly contesting ADLER Solar's Northwest Germany footprint.
- Enpal: Berlin-based solar leasing and holistic home energy provider offering PV, storage, heat pumps, and wallboxes to German homeowners. Competes for the same residential customer with a financing-driven, digital-first model.
- 1Komma5°: German energy company offering holistic residential energy solutions including PV, battery storage, heat pumps, and EV charging — directly overlapping ADLER Solar's core bundle but at national scale with venture backing.
- Solarwatt: Dresden-based German manufacturer and installer of solar systems, battery storage, and energy management. Comparable product mix (PV modules + storage + smart energy management) and overlapping customer base in Germany.
- Zolar: Online solar platform connecting German homeowners with regional installation partners for PV, storage, and heat pumps. Comparable end-customer offering and target market; differs via marketplace model rather than owned installers.
- IBC Solar: German PV system provider and EPC active in residential, commercial, and utility-scale solar. Comparable photovoltaic systems offering and installer network serving German end customers.
Broad incumbents
- Viessmann: German heating and climate technology manufacturer that has expanded into PV, battery storage, and holistic energy solutions. Competes with ADLER Solar on the heat-pump-plus-PV bundle within a much broader HVAC portfolio.
- E.ON: Major European utility offering residential and commercial solar solutions as part of a broad energy portfolio. Larger incumbent serving German customers with PV, storage, and EV charging products that overlap ADLER Solar's bundle.
Others
- SMA Solar Technology: German inverter and energy management technology supplier to solar installers including ADLER Solar. Adjacent ecosystem participant — not a direct competitor but a critical technology partner in ADLER Solar's product stack.
Emerging players
- BELECTRIC: European EPC focused on utility-scale solar and storage projects. Partial overlap with ADLER Solar's commercial operation management and repowering capabilities, though focused on large-scale rather than residential.
Market position
Strengths5 records
Weaknesses5 records
Competitive moat5 records
Key risks6 records
Key highlights7 records
Customer concentration
ADLER Solar social profiles
Digital presenceADLER Solar compliance and trust
Trust signalCompliance3 records
ADLER Solar financial estimates
Financial estimateRevenue estimate
Valuation estimate
ADLER Solar leadership team
Management profileNumber of profiles
Profiles7 records
ADLER Solar subsidiaries and ownership
Company hierarchySubsidiaries2 records
ADLER Solar funding detail
Funding detailFunding overview
Funding rounds
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
ADLER Solar 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 ADLER Solar
What does ADLER Solar do?
ADLER Solar is a regional Meisterbetrieb (master craftsman business) that plans, sells, and installs photovoltaic (PV) systems for residential and commercial customers across Northern Germany. Offerings center on PV systems complemented by battery storage (notably Sigenergy SigenStor), heat pumps, wallbox EV charging, and emergency power backup, with full-service delivery covering consultation, planning, installation, commissioning, maintenance, and repowering.
Is ADLER Solar a public or private company?
ADLER Solar is a private company. It is classified as founder individual operated bootstrapped and is currently operating.
When was ADLER Solar founded?
ADLER Solar was founded in 2008. It employs 51 to 100 people.
Where is ADLER Solar based?
ADLER Solar is headquartered in Bremen, Germany, in the Europe region.
How does ADLER Solar make money?
Seven revenue lines are on record. Photovoltaic (PV) system sales and installation is the primary driver. The others are battery storage systems, heat pump systems, EV charging infrastructure (Wallbox), repowering services, operation management and monitoring and maintenance services.
Who are ADLER Solar's main competitors?
Direct peers on record are Enerix, Enpal, 1Komma5°, Solarwatt, Zolar and IBC Solar. Broad incumbents are Viessmann and E.ON. SMA Solar Technology is listed as an others. BELECTRIC is listed as an emerging player.
Does ADLER Solar have an API?
No public API is recorded for ADLER Solar.
What industry is ADLER Solar in?
ADLER Solar's product category is Solar Energy Installation Services. Its primary akta.pro industry code is IMAFADAD, Renewable Energy Industrial Facilities Construction (Solar, Wind, Storage), with a secondary code of IMADAFAO, Solar Roofing & Roof-Mounted PV Systems. Its NAICS code is 221114 and its SIC code is 1731.