Sun Systems Group
Sun Systems Group is a Tarragona-based Spanish renewable energy developer and EPC founded in 2005 that designs, installs and operates solar PV, wind and green-hydrogen projects for landowners, industrial clients, SMEs and residential homeowners through its Tucasasolar, Tunavesolar and Sun Systems Andalucía divisions.
- Company typePrivate
- Founded2005
- HeadquartersTarragona, Spain
- Headcount11–50
- GTM typeB2B and B2C
- OfferingServices
What Sun Systems Group does
Sun Systems Group (legal entity SUN PHOTOVOLTAIC SYSTEMS SL, CIF B55546154) is a privately-held Spanish renewable energy developer and EPC contractor founded in 2005 and headquartered in Tarragona. The company designs, installs and operates solar photovoltaic, wind energy and green hydrogen assets for a heterogeneous customer base spanning landowners (who host solar farms via 30-year land-rental contracts starting at €1,000/hectare/year), industrial and large-enterprise clients (rooftop and ground-mounted PV, plus emerging electrolyzer projects), SMEs (Tunavesolar division created 2021), and residential homeowners (Tucasasolar division created 2020). Technical scope includes utility-scale solar farms, industrial rooftop PV at 6+ MW of installed capacity, wind farms, and green-hydrogen electrolysis — the latter addressed through an APPORTT Quality & Sustainability award-winning electrolyzer design tied to Tarragona's petrochemical cluster.
The business generates revenue through four primary streams: (i) recurring land-rental income on long-dated (30-40 year) contracts where Sun Systems owns and operates the assets; (ii) one-time industrial solar EPC contracts under the Tunavesolar brand with approximately 6-year customer payback and embedded financing; (iii) professional-services/residential turnkey installations under Tucasasolar including legal paperwork handling; and (iv) large renewable project development fees. Distribution is fully direct, with no automated call centers — sales are field-led across specialized divisions and a new regional subsidiary, Sun Systems Andalucía S.L., established in Granada in 2025 to cover southern Spain. International footprint extends to Morocco and Nigeria.
The company employs 11-50 staff with a multidisciplinary profile (engineers, lawyers, installers, commercial) and reportedly was a pioneer of large industrial rooftop installations on the Iberian Peninsula under Spain's RD 661/07 regime before pivoting to self-consumption following subsidy reform. In May 2025 it signed a strategic alliance with Atitlan Helios to jointly develop renewable projects. No revenue, funding rounds, or AI/ML capabilities are disclosed in the source material.
Sun Systems Group firmographics
Firmographics- Name
- Sun Systems Group
- Legal name
- SUN PHOTOVOLTAIC SYSTEMS SL
- Website
- https://sunsystems.es
- Company type
- Private
- Founded year
- 2005
- Operating status
- Operating
- Headcount range
- 11–50 employees
- Short description
- Sun Systems Group is a Tarragona-based Spanish renewable energy developer and EPC founded in 2005 that designs, installs and operates solar PV, wind and green-hydrogen projects for landowners, industrial clients, SMEs and residential homeowners through its Tucasasolar, Tunavesolar and Sun Systems Andalucía divisions.
- Ownership category
- akta.pro rank
Sun Systems Group industry classification
Industry- Product category
- Renewable Energy Services
- NAICS
- Solar Electric Power Generation (221114)
- SIC
- Electric, Gas & Sanitary Services (4900)
- akta.pro primary industry
- Solar EPC & Construction (Utility-Scale, Rooftop, Balance of System) (EUAMABAB)
- akta.pro secondary industries
- Solar Roofing & Roof-Mounted PV Systems (IMADAFAO), Solar Financing, Leasing & Ownership Platforms (Tax Equity, PPA, Securitization) (EUAMABAJ)
Keywords
Where Sun Systems Group is headquartered
LocationHeadquarters
- HQ city
- Tarragona
- HQ country
- Spain
- HQ region
- Europe
Offices2 records
Markets served
Sun Systems Group business model
Business model- GTM type
- B2B and B2C
- Offering type
- Services
- Cost components
- Personnel, Supply Chain, Operations, Marketing or Sales, Technology or R&D, Infrastructure
Revenue model
- Land Rental for Solar Farms: The company rents rustic land from landowners for 30-year periods (extendable to 40) to install solar farms. Landowners receive annual rent starting at 1,000 euros per hectare with annual CPI adjustments. Sun Systems handles all installation costs and IBI property taxes.
- Large Renewable Energy Projects: Development, installation, and operation of large-scale solar photovoltaic, wind, and green hydrogen projects. Revenue generated from electricity production and sales, as well as project development fees.
- Industrial Solar Installations (Tunavesolar): Solar photovoltaic and hot water installations for businesses and industries. Company provides design, construction, and operation services with financing options and approximately 6-year payback period.
- Domestic Solar Installations (Tucasasolar): Residential solar installations including consulting, component selection, installation, and all legal paperwork. Turnkey service for homeowners covering all phases of the installation process.
Pricing tiers
| Model | Billing | Price |
|---|---|---|
| Subscription | Annual | Land Rental - Minimum 1,000 euros per hectare per year |
| Other | Pay-as-you-go | Industrial Installation - Approximately 6-year payback |
Go-to-market motion2 records
Distribution channels4 records
Marketing channels4 records
Sun Systems Group product offering
Product offeringCore offering
Sun Systems Group (legal name SUN PHOTOVOLTAIC SYSTEMS SL) develops, installs, and manages renewable energy projects across Spain, covering solar photovoltaic, wind, and green hydrogen solutions for residential, commercial, and industrial customers. The company operates three specialized divisions — Tucasasolar (residential), Tunavesolar (SME/industrial), and Grandes Proyectos (large-scale projects) — and runs a land rental program that allows landowners to lease plots for solar farm development.
Product overview
Sun Systems Group operates as a unified renewable energy platform offering photovoltaic solar, wind energy, and green hydrogen solutions through multiple specialized divisions. The core offering spans land rental for solar farms, large-scale projects, and installation services. The portfolio includes two key sub-brands: Tucasasolar (launched 2020) handles domestic residential installations, while Tunavesolar (launched 2021) serves industrial and SME clients. A new regional subsidiary, Sun Systems Andalucía S.L. (2025), expands coverage to southern Spain. The company also offers green hydrogen as a pioneering service in Spain. All divisions work coordinately to generate synergies across the renewable energy spectrum.
Differentiator
Problem solved
Functional benefit
Brands
- Tucasasolar: Division created in 2020 for domestic solar installations targeting residential customers.
- Tunavesolar
- Sun Systems Andalucía S.L.
Products and services
- Tucasasolar (Residential Solar Installations)
- Tunavesolar (SME / Industrial Solar Installations)
- Grandes Proyectos (Large Renewable Energy Projects)
- Hidrógeno Verde (Green Hydrogen Production)
- Land Rental Program for Solar Farms
- Sun Systems Andalucía
Quantifiable outcome
- 6+ MW of installed photovoltaic power in rental regime on industrial rooftops
- +4 more outcomes
Companies that use Sun Systems Group
Customer profileSegments5 records
Ideal customer profiles4 records
Sun Systems Group technology and API
TechnologyTechnology focussed No
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Feature3 records
Sun Systems Group partnerships and signals
Strategic signalPartnerships
One partnership is on record.
- Atitlan HelioscoreStrategic agreement signed in May 2025 to combine efforts in developing renewable energy projects. Sun Systems Group contributes its experience in solar systems and advanced energy solutions while Atitlan Helios reinforces its commitment to energy transition and decarbonization. The alliance aims to implement sustainable and efficient solutions in the energy sector.
Scale indicators6 records
Recent moves9 records
Expansion highlights5 records
Sun Systems Group competitors and assessment
Company assessmentDirect peers
- Grenergy Renovables: Spanish renewable energy developer with utility-scale solar, wind, and storage projects across Iberia and Latin America, publicly listed on the Spanish Continuous Market. Operates a similar land-based project development model and is a natural competitor for Spanish utility-scale solar and storage tenders.
- Powen (Grupo Powen): Spanish solar EPC serving residential, commercial, and industrial customers with turnkey photovoltaic installations across Spain. Closely comparable to Sun Systems' Tunavesolar division in business model, customer profile, and full-service installation approach.
- Holaluz-Clidom: Spanish green energy retailer and residential solar installer focused on rooftop PV for homeowners, with a multi-channel direct-to-consumer sales motion. Directly comparable to Sun Systems' Tucasasolar residential division in target customer and product offering.
- Solaria Energía y Medio Ambiente: Spanish solar PV developer focused on utility-scale projects and distributed generation for residential and commercial customers across Iberia. Direct competitor in both large-scale solar development and the residential/SME installation market that Sun Systems serves through Tucasasolar and Tunavesolar.
- Solarpack (now TotalEnergies Renewables Iberia): Spanish-headquartered solar PV developer and EPC historically focused on utility-scale projects across Iberia and Latin America, with similar PV project development and land-based solar farm model. Most direct comparable for Sun Systems' large-project and industrial rooftop business at a larger scale.
Broad incumbents
- Audax Renovables: Spanish-listed renewable energy utility generating and supplying 100% renewable electricity to retail and SME customers, with growing solar generation assets across Iberia. Broader incumbent that competes with Sun Systems in SME/industrial solar supply and self-consumption installations.
- EDP Renováveis (EDPR): Portuguese-headquartered global renewables developer with significant wind and solar assets across the Iberian Peninsula. Major incumbent in the Spanish renewable energy landscape and an indirect competitor for project development resources and grid connection capacity.
- Iberdrola Renovables: Spanish global utility with the largest renewable energy portfolio in the country, including utility-scale solar PV, wind, and emerging green hydrogen projects. Largest incumbent in the Spanish energy transition and a dominant competitor for utility-scale project pipelines.
- Acciona Energía: Spanish-listed global renewables operator with significant utility-scale solar and wind capacity, including in Spain. A major incumbent competing for large-scale project tenders, landowner contracts, and corporate PPAs where Sun Systems also operates.
Emerging players
- Factor Energía: Spanish independent energy retailer and renewable project developer active in distributed generation and self-consumption installations for SME and industrial clients. Emerging competitor with overlapping customer segments to Sun Systems' Tunavesolar division.
Market position
Strengths5 records
Weaknesses5 records
Competitive moat4 records
Key risks2 records
Key highlights7 records
Customer concentration
Sun Systems Group social profiles
Digital presenceSun Systems Group financial estimates
Financial estimateRevenue estimate
Valuation estimate
Sun Systems Group leadership team
Management profileNumber of profiles
Sun Systems Group subsidiaries and ownership
Company hierarchySubsidiaries3 records
Sun Systems Group funding detail
Funding detailFunding overview
Funding rounds
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
Sun Systems Group 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 Sun Systems Group
What does Sun Systems Group do?
Sun Systems Group (legal name SUN PHOTOVOLTAIC SYSTEMS SL) develops, installs, and manages renewable energy projects across Spain, covering solar photovoltaic, wind, and green hydrogen solutions for residential, commercial, and industrial customers. The company operates three specialized divisions — Tucasasolar (residential), Tunavesolar (SME/industrial), and Grandes Proyectos (large-scale projects) — and runs a land rental program that allows landowners to lease plots for solar farm development.
Is Sun Systems Group a public or private company?
Sun Systems Group is a private company. It is classified as unknown and is currently operating.
When was Sun Systems Group founded?
Sun Systems Group was founded in 2005. It employs 11 to 50 people.
Where is Sun Systems Group based?
Sun Systems Group is headquartered in Tarragona, Spain, in the Europe region.
How does Sun Systems Group make money?
Four revenue lines are on record. Land Rental for Solar Farms are the primary driver. The others are large Renewable Energy Projects, industrial Solar Installations (Tunavesolar) and domestic Solar Installations (Tucasasolar).
Who are Sun Systems Group's main competitors?
Direct peers on record are Grenergy Renovables, Powen (Grupo Powen), Holaluz-Clidom, Solaria Energía y Medio Ambiente and Solarpack (now TotalEnergies Renewables Iberia). Broad incumbents are Audax Renovables, EDP Renováveis (EDPR), Iberdrola Renovables and Acciona Energía. Factor Energía is listed as an emerging player.
Does Sun Systems Group have an API?
No public API is recorded for Sun Systems Group.
What industry is Sun Systems Group in?
Sun Systems Group's product category is Renewable Energy Services. Its primary akta.pro industry code is EUAMABAB, Solar EPC & Construction (Utility-Scale, Rooftop, Balance of System), with a secondary code of IMADAFAO, Solar Roofing & Roof-Mounted PV Systems. Its NAICS code is 221114 and its SIC code is 4900.