What Solstyce does

Solstyce is a French photovoltaic engineering, procurement, and construction (EPC) company founded in 2009 and headquartered in Paris, operating as the dedicated solar subsidiary of Groupe Solstyce since the parent group's 2021 reorganization. The company designs, builds, finances, and maintains photovoltaic installations across four core modalities: rooftop systems on commercial and industrial buildings, ground-mounted solar farms on unused or brownfield land, parking canopy (ombrière) structures including the standardized Ombrières START line, and building-integrated architectural photovoltaics (BIPV) for façades and sunshades. Operations are delivered through six regional agencies covering all of metropolitan France, supported by dedicated expertise poles for key accounts, maintenance, the Ombrières START product, and the proprietary SMART Energy System, which combines real-time monitoring, predictive self-consumption algorithms, battery storage management, and electric vehicle charging optimization.

The business model combines one-time EPC project revenue with recurring income from long-term maintenance and operations contracts, supplemented by zero-capex project financing via the proprietary Novengo vehicle, electric vehicle charging infrastructure delivered through a flagship joint venture with Renault Group's Mobilize brand, and adjacent services (roofing/waterproofing and environmental/carbon consulting) provided through sister subsidiaries of Groupe Solstyce. Solstyce holds Qualifelec RGE certification at the highest SPV tiers (SPV1, 2, 3) plus maintenance and storage, alongside ISO 9001 and ISO 14001 certifications, and has reached €60 million in disclosed annual revenue with 160 collaborators (60% engineers) and 190 MWc of installed photovoltaic capacity across a customer base including Decathlon, SNCF, STEF, Lidl, IKEA, Essilor, Prologis, E.Leclerc, DB Schenker, L'Oréal, Vinci, TotalEnergies, E.ON, and Sunrock.

Name

Solstyce

Legal name

Solstyce

Website

https://solstyce.fr

Company type

Private

Founded year

2009

Operating status

Operating

Headcount range

101–250 employees

Ownership category

akta.pro rank

Product category

Solar EPC Services

NAICS

Solar Electric Power Generation (221114)

SIC

Cogeneration Services & Small Power Producers (4991)

akta.pro primary industry

Solar PV Power Plant EPC (Utility-Scale) (EUAEAAAG)

akta.pro secondary industries

Operations, Maintenance & Asset Management (O&M, Vegetation, Spares, SCADA) (EUACAGAH), Solar EPC & Construction (Utility-Scale, Rooftop, Balance of System) (EUAMABAB), Solar Balance-of-Plant EPC (Piles/Foundations, Trenching, Combiner Networks) (EUAEADAJ), Owner’s Engineering, Grid Interconnection & System Studies (PVsyst/Performance Modeling, Protection Studies) (EUACAGAG)

Keywords

• Photovoltaic installation services
• Solar EPC contracting
• Rooftop solar systems
• Ground-mounted solar plants
• Parking solar canopies

Headquarters

HQ city

Paris

HQ country

France

HQ region

Europe

Offices7 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Operations, Technology or R&D, Marketing or Sales, Supply Chain

Revenue model

1. EPC - Engineering, Procurement & Construction: Design and construction of photovoltaic installations including rooftops, ground-based farms, parking shades, and architectural integration. Revenue is generated through one-time project contracts covering engineering, procurement of materials, and construction delivery.
2. Maintenance and Operations: Ongoing maintenance, cleaning, supervision, and exploitation services for installed solar plants. Includes preventive maintenance, corrective repairs, regulatory controls (Q18 and Q19 infrared thermography), and administrative management including production invoicing to EDF Obligation Achat and CRE.
3. Project Financing (Novengo): Financing solutions for photovoltaic projects through Novengo asset management, enabling clients to invest in solar infrastructure without upfront capital. The company produces, finances, and operates solar plants.
4. Electric Vehicle Charging Infrastructure: Design, installation, and operation of EV charging infrastructure through the Mobilize joint venture with Renault Group, complementary to photovoltaic installations.
5. Roofing and Waterproofing Works: Waterproofing and thermal insulation work on flat rooftops, often combined with solarization (PV Ready) through the Group's roofing subsidiary.
6. Environmental Performance Consulting: Carbon performance advisory, carbon footprint assessment, and environmental certification services (Osez PINK – Passez au vert program) through the Group's consulting subsidiary.

Pricing tiers

Go-to-market motion2 records

Distribution channels2 records

Marketing channels4 records

Core offering

Solstyce designs, finances, builds, and operates photovoltaic solar power plants for businesses, industries, and local authorities across France. Its portfolio includes rooftop installations, ground-mounted plants, parking-lot solar canopies (including the standardized Ombrières START product), and architecturally integrated PV systems. The company supplements project delivery with proprietary technology (SMART Energy System), the Novengo finance-and-operate model, and a dedicated maintenance division covering both Solstyce-built and third-party installations.

Product overview

Solstyce is the photovoltaic subsidiary of Groupe Solstyce, offering a comprehensive portfolio of solar energy solutions organized around three core installation products (toiture/rooftop, ombrières/parking canopies, centrales au sol/ground-mounted) plus architectural integration, complemented by two supporting service modules (SMART Energy System for energy management/pilotage and Maintenance & Exploitation). The offering is designed as an integrated one-stop-shop: Centrales en Toiture and Centrales au Sol provide production capacity, the two Ombrières lines (standard sur mesure and START modular) address parking compliance needs, Intégration Architecturale enables building envelope solutions, while SMART Energy System adds intelligent energy optimization and maintenance services ensure long-term performance. All solutions can be combined with financing options through Groupe Solstyce.

Differentiator

Problem solved

Functional benefit

Products and services

• Centrales en Toiture (Rooftop Solar Power Plants) Turnkey rooftop photovoltaic solar installations designed for industrial, commercial, and public-sector buildings; targets enterprises and local authorities with underused roof assets seeking to produce on-site renewable electricity.
• Ombrières de Parking (Parking Solar Canopies) Photovoltaic canopy structures installed over parking lots to generate solar electricity while providing shade and weather protection for vehicles; sold to enterprises, retailers, and public parking operators with large paved surfaces.
• Ombrières START (Modular Parking Canopy Product) Standardized, modular parking solar canopy product line designed for faster, repeatable deployment across mid-market and enterprise parking assets; positions Solstyce's canopy offering as a packaged, quicker-to-install solution versus fully custom builds.
• Centrales au Sol (Ground-Mounted Solar Plants) Ground-mounted photovoltaic power plants built on available land for larger-scale electricity generation; targets enterprises, developers, and public actors with suitable land reserves seeking utility-scale or behind-the-meter solar capacity.
• Intégration Architecturale (Architectural Photovoltaic Integration) Photovoltaic solutions integrated into building envelopes and architectural elements (façades, sun-shading, customized structures); designed for projects where solar generation must coexist with strong architectural and aesthetic requirements, typically on premium commercial or public buildings.
• SMART Energy System Proprietary energy-autonomy solution combining solar generation, storage, and intelligent energy management to enable sites to optimize self-consumption and reduce grid dependence; sold to enterprise and public-sector customers seeking on-site energy autonomy alongside their solar installation.
• Maintenance et Exploitation (Operations & Maintenance Services) Ongoing photovoltaic operations and maintenance services delivered via Solstyce's in-house GMAO platform, covering both Solstyce-built and third-party installations; provides preventive and corrective maintenance, performance monitoring, and lifecycle support under multi-year service contracts.
• Novengo (Solar Asset Financing and Operation) Financing and operating-service model under which Solstyce funds, owns, and operates solar power plants on client sites, selling generated electricity back to the host; enables enterprises, public actors, and property owners to deploy solar with no upfront capital investment.

Quantifiable outcome

• Up to 190 MWc of installed photovoltaic power capacity managed
• +3 more outcomes

Named customers15 records

Segments3 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature4 records

Partnerships

Ten partnerships are on record, tiered core, flagship and minor.

• Mobilize Power SolutionscoreTechnology or IntegrationStrategic technology partnership for EV charging infrastructure integrated into Ombrières START parking shade structures. The ombrières are pre-equipped and compatible with IRVE (Infrastructure de Recharge pour Véhicules Électriques) through this partnership, enabling Solstyce to offer combined solar + EV charging solutions to parking operators.
• Renault Group / MobilizeflagshipStrategic or Co-development PartnerJoint venture between Renault Group's Mobilize brand and Groupe Solstyce for electric mobility charging infrastructure. The partnership is marketed as 'a MOBILIZE Companies' initiative, combining automotive-grade EV charging infrastructure expertise with Solstyce's solar energy and installation capabilities to deliver integrated e-mobility solutions.
• Mobilize Power SolutionscoreTechnology or IntegrationPartnership for EV charging solutions integrated into custom parking shade structures. Mobilize Power Solutions serves as the expert Group partner for charging infrastructure within Solstyce's custom ombrière offerings.
• TotalEnergiescoreStrategic or Co-development PartnerEPC (Engineering, Procurement and Construction) collaboration for large-scale ground-based solar farm projects. Solstyce delivers complete solar installation services for TotalEnergies' renewable energy development projects.
• E.ON Business SolutionscoreStrategic or Co-development PartnerEPC collaboration for ground-based solar farm projects. Solstyce provides engineering, procurement, and construction services for E.ON's solar development pipeline in France.
• SunrockcoreStrategic or Co-development PartnerEPC collaboration for ground-based solar farm projects. Solstyce delivers construction services for Sunrock's solar installations in the French market.
• AtlansunminorStrategic or Co-development PartnerProfessional renewable energy network membership. Solstyce is a member of Atlansun, a network of solar energy professionals in France.
• TenerrdisminorStrategic or Co-development PartnerProfessional renewable energy cluster membership in the Auvergne-Rhône-Alpes region. Solstyce participates in the Tenerrdis cluster for solar energy innovation and collaboration.
• AfilogminorStrategic or Co-development PartnerProfessional logistics real estate association membership. Solstyce is listed as a member of Afilog, positioning the company within the logistics and real estate ecosystem for solar installations.
• PerifemminorStrategic or Co-development PartnerTrade association membership for retail and distribution professionals in France. Supports Solstyce's positioning in the retail sector for solar installations on commercial properties.

Scale indicators8 records

Recent moves8 records

Expansion highlights7 records

Broad incumbents

• Engie Green: French renewable arm of Engie covering onshore wind, solar (rooftop and ground), and storage at national scale. Overlaps with Solstyce in distributed PV EPC and O&M for enterprise and public-sector customers.
• EDF Renewables: Subsidiary of EDF group and one of France's largest renewable developers. Competes in rooftop, ground, and parking canopy segments with utility-scale balance sheet, broader portfolio (wind, solar, storage), and direct EDF OA relationship that Solstyce also services.
• TotalEnergies Solar (Renouvelables France): Solar division of TotalEnergies active in distributed and ground-mounted PV in France. Notable as both a Solstyce customer (EPC relationship) and a competitor, with materially larger balance sheet and project finance capacity.

Direct peers

• Photosol: Major French solar developer and EPC contractor with both ground-mounted and rooftop projects. Comparable business model covering PV development, construction, and operation; serves similar enterprise and public-sector customers in France.
• TSE: French mid-sized solar developer specializing in agrivoltaics and ground-mounted PV with full EPC and operations capabilities. Comparable as a France-based PV EPC at similar scale, with overlapping enterprise and public-sector client base.
• Akuo Energy: Independent French renewable energy developer with solar EPC operations across rooftop, ground, and shade projects. Comparable for project development, EPC, and long-term operations serving enterprises and local authorities.
• Urbasolar: French photovoltaic EPC and developer active in rooftop, ground-mounted, and shade-structure installations across France. Directly comparable to Solstyce in customer segments (enterprises, local authorities), service scope (EPC + O&M), and national agency model.
• Sun'R: French solar IPP and EPC offering utility-scale and distributed PV with self-consumption and storage solutions. Comparable for its SMART-style energy piloting proposition and enterprise rooftop customer base.

Emerging players

• Neoen: French-origin independent renewable developer (now international) with utility-scale solar and storage operations. Comparable on ground-mounted PV construction and operations in France, though more focused on utility-scale than rooftop/parking.
• GreenYellow: Energy services provider (originally Casino group) offering rooftop solar, energy efficiency, and EV charging to retail and commercial customers in France. Comparable for integrated solar-plus-services proposition aimed at multi-site retail/enterprise customers.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat6 records

Key risks1 record

Key highlights7 records

Customer concentration

• YouTubeyoutube.com/@GroupeSolstyce
• LinkedInlinkedin.com/company/solstyce/?originalSubdomain=fr
• Xx.com/solstyce_sas

Compliance7 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles14 records

Funding overview

Funding rounds1 record

Investors2 records

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 Solstyce