GRS

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.

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

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

• Solar EPC services
• Photovoltaic construction
• PV operations maintenance
• Battery storage systems
• Utility-scale solar

Headquarters

HQ city

Alcobendas

HQ country

Spain

HQ region

Europe

Offices10 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

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

Revenue model

1. 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.
2. 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.
3. Engineering Consultancy: Technical support, design engineering, permitting, grid studies, civil engineering, and performance calculation services for photovoltaic projects worldwide.

Pricing tiers

Go-to-market motion1 record

Distribution channels2 records

Marketing channels4 records

Core 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

Named customers10 records

Segments2 records

Ideal customer profiles1 record

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature3 records

Partnerships

13 partnerships are on record, tiered core and secondary.

• SenseHawkcoreTechnology or Integration · 25 March 2026Implementation 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 GroupcoreStrategic or Co-development Partner · 1 March 2026EPC contract for Dintel Solar 50 MWp photovoltaic plant in Wamba, Valladolid, Spain. GRS provides engineering, construction, and O&M.
• WElink EnergycoreStrategic or Co-development Partner · 27 January 2026O&M contract for Solara4 (219 MWp), one of Portugal's largest PV plants. Initial 2-year contract extendable to 10 years.
• Octopus AustraliacoreStrategic or Co-development Partner · 28 November 2025EPC 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)coreStrategic or Co-development Partner · 28 November 2025Substation infrastructure construction for Blind Creek Solar Farm project as part of coordinated Gransolar Group effort.
• PV HardwarecoreTechnology or Integration · 28 November 2025Supplier of AxoneDuo Infinity solar trackers for Blind Creek and other GRS EPC projects.
• ForesightcoreStrategic or Co-development Partner · 1 September 2025EPC 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 EnergycoreStrategic or Co-development Partner · 10 March 2025EPC contract for Carwarp Solar Farm construction in Australia. Recurrent Energy, a subsidiary of Canadian Solar, develops the project while GRS handles construction.
• Everwood CapitalcoreStrategic or Co-development Partner · 17 October 2024EPC for 167 MW photovoltaic cluster in Sevilla, Spain comprising multiple projects.
• BNZcoreStrategic or Co-development Partner · 9 September 2024EPC partnership for Famalicao photovoltaic plant construction in Portugal.
• AMP EnergysecondaryStrategic or Co-development Partner · 20 August 2024O&M contract renewal for Hillston and Molong projects in Australia through 2025.
• Amarenco GroupsecondaryStrategic or Co-development Partner · 20 June 2023O&M contract extension for Las Naranjillas photovoltaic plant until 2025.
• CHINTsecondaryStrategic or Co-development Partner · 24 February 202148.5 MW EPC contract in Portugal. Partnership for solar project development.

Scale indicators14 records

Recent moves6 records

Expansion highlights4 records

Direct 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

• LinkedInlinkedin.com/company/grs-energy
• YouTubeyoutube.com/@grs-energy

Compliance7 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles6 records

Subsidiaries4 records

Funding overview

Funding rounds1 record

Investors1 record

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 GRS