GRS
GRS is the EPC and O&M division of Grupo Gransolar, building turnkey utility-scale photovoltaic plants and battery storage systems globally and operating a 3.4 GW asset management book across 21 countries for energy developers and infrastructure investors.
- Company typePrivate
- Founded2006
- HeadquartersAlcobendas, Spain
- Headcount251–500
- GTM typeB2B
- OfferingServices
What GRS does
GRS is the solar engineering, procurement, and construction (EPC) and operations and maintenance (O&M) division of Grupo Gransolar, S.L., a privately held Spanish vertically integrated renewable energy group headquartered in Alcobendas, Madrid. The business builds turnkey utility-scale photovoltaic plants and battery energy storage systems (BESS) worldwide, leveraging in-house engineering consultancy, procurement, construction, and commissioning capabilities, and supports installed assets through a 24/7 remote control center and proprietary SunManager CMMS software. As of 2026, the company reports 129 completed or in-progress projects across 21 countries on five continents, more than 4,890 MW of cumulative EPC capacity built, and roughly 3.4 GW of PV and BESS assets under active O&M.
The company's go-to-market is direct enterprise project sales to utility-scale solar developers, energy investment funds, and infrastructure investors through competitive EPC bidding and multi-year O&M service contracts (typically 2-10 years). Customers include Octopus Australia, Recurrent Energy, Foresight, WElink Energy, Everwood Capital, AMP Energy, Millennium Green Investment Group, CHINT, and BNZ, with marquee projects such as the 300 MW PV + 486 MWh BESS Blind Creek hybrid in Australia and the 49.4 MW / 98.8 MWh Glendevon standalone battery in Scotland. Operations are delivered through four core service lines - GRS Engineering (consultancy, formerly Ingenia Solar Energy), GRS Construction (EPC with in-house commissioning), GRS O&M, and supporting IT/OT infrastructure services - and are underpinned by ISO 9001/14001/45001/50001/27001/20400 certifications. Revenue is generated through one-time EPC project contracts and recurring O&M subscriptions, with the EPC stream currently driving the majority of top-line given active construction backlog.
GRS firmographics
Firmographics- Name
- GRS
- Legal name
- GRUPO GRANSOLAR, S.L.
- Website
- https://grs.energy
- Company type
- Private
- Founded year
- 2006
- Operating status
- Operating
- Headcount range
- 251–500 employees
- Short description
- GRS is the EPC and O&M division of Grupo Gransolar, building turnkey utility-scale photovoltaic plants and battery storage systems globally and operating a 3.4 GW asset management book across 21 countries for energy developers and infrastructure investors.
- Ownership category
- akta.pro rank
GRS industry classification
Industry- Product category
- Solar EPC Services
- NAICS
- Solar Electric Power Generation (221114)
- SIC
- Electric Services (4911)
- akta.pro primary industry
- Utility-Scale PV EPC (Engineering, Procurement & Construction) (EUACAGAB)
- akta.pro secondary industries
- Solar EPC & Construction (Utility-Scale, Rooftop, Balance of System) (EUAMABAB), Commercial & Industrial (C&I) BESS EPC & Integration (EUAEAEAB), Electrical Balance-of-Plant EPC (MV Collection, Cabling, Earthing, Lighting) (EUAEADAB), Power Plant Electrical Systems EPC (Switchyard, Transformers, Protection & Controls) (EUAEAAAM)
Keywords
Where GRS is headquartered
LocationHeadquarters
- HQ city
- Alcobendas
- HQ country
- Spain
- HQ region
- Europe
Offices10 records
Markets served
GRS business model
Business model- GTM type
- B2B
- Offering type
- Services
- Cost components
- Personnel, Operations, Supply Chain, Technology or R&D, Infrastructure
Revenue model
- EPC Construction: Engineering, procurement, and construction services for turnkey photovoltaic plants and BESS projects. Revenue from project-based contracts covering full project lifecycle from design through grid connection.
- O&M Services: Operation and maintenance services for PV plants and battery storage systems. Contracts typically 2-10 years with recurring revenue. Covers monitoring, remote control, preventive/corrective maintenance, and performance optimization.
- Engineering Consultancy: Technical support, design engineering, permitting, grid studies, civil engineering, and performance calculation services for photovoltaic projects worldwide.
Pricing tiers
| Model | Billing | Price |
|---|---|---|
| Other | Multi-year contract | Custom project-based EPC pricing |
Go-to-market motion1 record
Distribution channels2 records
Marketing channels4 records
GRS product offering
Product offeringCore offering
GRS delivers turnkey engineering, procurement, and construction (EPC) services for utility-scale photovoltaic plants, along with battery energy storage system (BESS) integration. The company also provides ongoing operations and maintenance (O&M) services to maximize the performance and reliability of solar PV assets throughout their operational lifecycle.
Product overview
GRS (Gransolar Construction) is the solar EPC contractor division of Gransolar Group, offering vertically integrated services across the solar project lifecycle. The portfolio consists of three interconnected service lines: GRS Engineering (formerly Ingenia Solar Energy) provides PV engineering consultancy and technical advisory; GRS Construction (EPC) delivers turnkey PV plants and BESS construction with in-house commissioning; and GRS O&M provides ongoing operations, maintenance, and asset management. Supporting these core services are proprietary software (SunManager CMMS) and 24/7 remote monitoring (RCC Operations & Intelligence). The company operates across five continents with over 20 years of experience and approximately 4.5 GW of installed solar capacity.
Differentiator
Problem solved
Functional benefit
Brands
- GRS O&M: Operation and maintenance division of Gransolar Group providing O&M services for PV plants and BESS across multiple countries.
- GRS SunManager
- GRS RCC 24/7
Products and services
- GRS Engineering Engineering services covering design and technical planning for utility-scale photovoltaic plants and battery energy storage systems, provided to project developers and asset owners.
- GRS Construction (EPC) Turnkey engineering, procurement, and construction services for utility-scale photovoltaic plants and battery energy storage systems, delivered to developers, IPPs, and infrastructure investors.
- GRS Operations and Maintenance (O&M) Ongoing operations and maintenance services for installed photovoltaic plants, focused on maximizing energy yield, reliability, and asset uptime for plant owners.
Quantifiable outcome
- 4.5 GW of solar power installed
- +3 more outcomes
Companies that use GRS
Customer profileNamed customers10 records
Segments2 records
Ideal customer profiles1 record
GRS technology and API
TechnologyTechnology focussed No
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Feature3 records
GRS partnerships and signals
Strategic signalPartnerships
13 partnerships are on record, tiered core and secondary.
- SenseHawkcoreImplementation of SenseHawk's TaskMapper platform for digitizing global solar construction operations. Enables real-time geospatial tracking, digital quality control, and automated commissioning workflows across 1.5 GW of projects.
- Millennium Green Investment GroupcoreEPC contract for Dintel Solar 50 MWp photovoltaic plant in Wamba, Valladolid, Spain. GRS provides engineering, construction, and O&M.
- WElink EnergycoreO&M contract for Solara4 (219 MWp), one of Portugal's largest PV plants. Initial 2-year contract extendable to 10 years.
- Octopus AustraliacoreEPC and O&M partnership for Blind Creek Solar Farm (300MW PV + 486 MWh BESS) and Fulham Solar Farm (80MW) hybrid projects in Australia. GRS delivers construction and long-term operations while Octopus provides project development and offtake.
- Green Grid Connect (GGC)coreSubstation infrastructure construction for Blind Creek Solar Farm project as part of coordinated Gransolar Group effort.
- PV HardwarecoreSupplier of AxoneDuo Infinity solar trackers for Blind Creek and other GRS EPC projects.
- ForesightcoreEPC and initial O&M for Glendevon stand-alone battery project (49.4 MW / 98.8 MWh) in Scotland. Foresight is the investment manager and asset owner.
- Recurrent EnergycoreEPC contract for Carwarp Solar Farm construction in Australia. Recurrent Energy, a subsidiary of Canadian Solar, develops the project while GRS handles construction.
- Everwood CapitalcoreEPC for 167 MW photovoltaic cluster in Sevilla, Spain comprising multiple projects.
- BNZcoreEPC partnership for Famalicao photovoltaic plant construction in Portugal.
- AMP EnergysecondaryO&M contract renewal for Hillston and Molong projects in Australia through 2025.
- Amarenco GroupsecondaryO&M contract extension for Las Naranjillas photovoltaic plant until 2025.
- CHINTsecondary48.5 MW EPC contract in Portugal. Partnership for solar project development.
Scale indicators14 records
Recent moves6 records
Expansion highlights4 records
GRS competitors and assessment
Company assessmentDirect peers
- Solaria Energía y Medio Ambiente: Spanish solar PV developer and EPC competitor operating in Iberia and Latin America. Directly comparable as a Spanish-headquartered utility-scale solar EPC and project developer serving similar utility and developer customers.
- BayWa r.e. German-headquartered global solar and wind EPC, project developer, and O&M provider. Closely comparable to GRS in vertically integrated utility-scale solar services across Europe, Americas, and Asia-Pacific.
- juwi: German renewable energy EPC and project developer specializing in utility-scale solar and storage. Comparable in service scope (engineering, EPC, O&M) and target customer base of developers and investors.
- ib vogt: German-headquartered utility-scale solar EPC and developer with global footprint. Comparable business model spanning development, EPC, and operations across Europe, Americas, Asia, and Africa.
- Swinerton Renewable Energy: US-based utility-scale solar EPC contractor with strong execution track record. Comparable as a non-OEM EPC specialist serving developers and infrastructure funds on utility-scale PV and storage.
- Mortenson Construction: US-based EPC contractor with a dedicated renewable energy group executing utility-scale solar and storage projects. Closely comparable in EPC service offering and developer/investor customer base.
- Sterling and Wilson: Indian-headquartered global solar EPC contractor with utility-scale and storage projects worldwide. Comparable as a globally active EPC specialist competing in the same multi-region utility-scale solar market.
Broad incumbents
- Acciona Energía: Spanish global renewables developer and operator with in-house EPC capabilities. Comparable as a large Spanish utility-scale solar player; competes with GRS for both EPC contracts and project development opportunities across multiple continents.
- Enel Green Power: Global utility-scale renewables developer-operator with internal EPC capabilities. Comparable as both a potential customer (asset owner) and as a large integrated competitor that can displace third-party EPC contractors like GRS.
Others
- Recurrent Energy (Canadian Solar subsidiary): Global utility-scale solar developer and EPC arm of Canadian Solar. Comparable as both a customer (e.g., Carwarp EPC award to GRS) and a vertically integrated developer-EPC competitor in GRS's core markets.
Market position
Strengths5 records
Weaknesses5 records
Competitive moat5 records
Key risks6 records
Key highlights6 records
Customer concentration
GRS social profiles
Digital presenceGRS compliance and trust
Trust signalCompliance7 records
GRS financial estimates
Financial estimateRevenue estimate
Valuation estimate
GRS leadership team
Management profileNumber of profiles
Profiles6 records
GRS subsidiaries and ownership
Company hierarchySubsidiaries4 records
GRS funding detail
Funding detailFunding overview
Funding rounds1 record
Investors1 record
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
GRS 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 GRS
What does GRS do?
GRS delivers turnkey engineering, procurement, and construction (EPC) services for utility-scale photovoltaic plants, along with battery energy storage system (BESS) integration. The company also provides ongoing operations and maintenance (O&M) services to maximize the performance and reliability of solar PV assets throughout their operational lifecycle.
Is GRS a public or private company?
GRS is a private company. It is classified as corporate owned and is currently operating.
When was GRS founded?
GRS was founded in 2006. It employs 251 to 500 people.
Where is GRS based?
GRS is headquartered in Alcobendas, Spain, in the Europe region.
How does GRS make money?
Three revenue lines are on record. EPC Construction is the primary driver. The others are O&M Services and engineering Consultancy.
Who are GRS's main competitors?
Direct peers on record are Solaria Energía y Medio Ambiente, BayWa r.e., juwi, ib vogt, Swinerton Renewable Energy, Mortenson Construction and Sterling and Wilson. Broad incumbents are Acciona Energía and Enel Green Power. Recurrent Energy (Canadian Solar subsidiary) is listed as an others.
Does GRS have an API?
No public API is recorded for GRS.
What industry is GRS in?
GRS's product category is Solar EPC Services. Its primary akta.pro industry code is EUACAGAB, Utility-Scale PV EPC (Engineering, Procurement & Construction), with a secondary code of EUAMABAB, Solar EPC & Construction (Utility-Scale, Rooftop, Balance of System). Its NAICS code is 221114 and its SIC code is 4911.