Our references

Always alert and attuned to its customers’ needs, Cythelia’s team of professionals leaves no stone unturned in its quest to ensure full customer satisfaction.
The following is a sample of the positive feedback that we have received on our recent projects:

Cythelia's hallmarks are its quality and professionalism

Charles Bramont Manager - Kilowolt

A service provider always focused on our needs and displaying the utmost professionalism

Nicolas Humeau Technical Services Manager - Nueil-Les-Aubiers Council

They performed a professional service to the highest standards within contractual times. The report was explicit and well presented. The results have enabled us to make good use of the data.

Catherine Bigot Property and Logistics Director - Brittany Regional Council

Cythelia is a real expert in the field concerned. We built a good working relationship. Cythelia was capable of adapting to the service required and the deadlines.

Frédérique Dequiedt Delegate for Urban Ecology - Plaine Commune Combined District Council

Mission accomplished. Cythelia was always attentive to our needs.

Christian Labie Director - Rhône Alpes Energie Environnement (RAEE)

A first-class service. Cythelia did an excellent job analyzing the specifications of the authority's mandate and understanding all the local issues. Cythelia proved to be exceptionally available and quick to respond. The quality of the report, the clarity of the technical and financial analysis, and the consistency of the proposals bore all the hallmarks of a highly professional company.

Charles Fabre Mayor of Tarascon

A high-quality service that ticked every box and enabled us to take the right decisions.

Pascal Vianey General Maintenance Manager - Salomon

We have gained their trust

Our customers

Key projects (non-exhaustive list)

  • AMO-eaudeparis
    Type of mission : Project management
    Energy: Solar photovoltaic
    Power: 530 kWp
    Customer: Eau de Paris
    Country: France
    Description: 10 industrial sites
  • 81
    Type of mission: Independent energy yield assessment
    Energy : Solar photovoltaic
    Power: 6 MWp
    Customer: Confidential
    Country: France
    Description: 30 rooftop installations
  • 62
    Type of mission: Opportunity study
    Energy: Solar photovoltaic
    Customer: Centre Regional Council
    Country: France
    Description: All public high schools (109 establishments) with a self-consumption study
  • 35
    Type of mission: Audit
    Energy: Solar photovoltaic
    Power: 500 kWp
    Customer: Confidential
    Country: France
    Description: Audit of two agricultural rooftop installations
  • etude-specifique-jordanie
    Type of mission: Consulting
    Energy: Solar photovoltaic
    Customer: AFD
    Country: Jordan
    Description: Benchmarking of equipment, manufacturers, suppliers and installation engineers for awarding bank loans. On-site training (Amman)
  • Danone - Bilan Carbone
    Type of mission: Carbon footprint audit
    Customer: Danone
    Country: France
    Description: Carbon footprint audit of two dairy plants (including the largest milk factory in Europe), La Salvetat (sparkling water), Danone Research, head offices of Danone Group and Danone France
  • 69
    Type of mission: Feasibility study
    Customer: Plaine Commune municipal association
    Country: France
    Description: Feasibility of an eco-district smart grid
  • 33
    Type of mission: Solar cadastre
    Energy: Solar photovoltaic and thermal
    Customer: City of Lyon
    Country: France
    Description: Mapping of the solar energy potential of 10,000 roofs
  • 60
    Type of mission: Energy audit
    Customer: Miscellaneous
    Country: France
    Description: Several dozens of condominiums from 30 to 200 lots in Savoie
  • 75
    Type of mission: Project management
    Customer: City of Frontenex
    Country: France
    Description: Thermal renovation of the school, community center and gym (insulation, heating, ventilation and shade screens)
  • diagnostic-thermique-salomon
    Type of mission: Energy audit
    Customer: Salomon
    Country: France
    Description: 30,000 m² of offices, warehouses and workshops
  • 82
    Type of mission: Energy yield assessment
    Energy: Solar photovoltaic
    Power: 1MWp
    Customer: Confidential
    Country: France
    Description: 7 rooftop installations
  • 42
    Type of mission: Audit
    Energy: Solar photovoltaic
    Customer: City of Chambéry
    Country: France
    Description: Audit of the city's PV power stations (10 sites)
  • Bilan Carbone bioMérieux
    Type of mission: Carbon footprint audit
    Customer: bioMérieux
    Country: International
    Description: Carbon footprint audit of 62 sites, including a nationwide statutory greenhouse gas audit
  • Cadastre solaire Bordeaux
    Type of mission: Solar cadastre
    Energy: Solar
    Customer: City of Bordeaux
    Partners: Geomap-Imagis
    Country: France
    Description: City-wide solar cadastre (in progress)
  • 37
    Type of mission: Consulting
    Energy: Solar
    Customer: INES-CEA
    Country: World
    Description: Comparative study between photovoltaics (PV), concentrator photovoltaics (CPV) and concentrated solar power (CSP)
  • 70-2
    Type of mission: Feasibility study
    Energy: Solar photovoltaic
    Power: 18 MWp
    Customer: Industrial (confidential)
    Country: Tunisia
    Description: Ground-mounted self-consumption photovoltaic power plant for a factory
    - Power need evaluation
    - Site selection
    - Plant sizing
    - Economics of the project
  • 61
    Type of mission: Project management
    Energy: Solar photovoltaic
    Power: 450 kWp
    Customer: Centre Regional Council
    Country: France
    Description: Self-consumption installations for 20 high schools
  • renovation-thermique-opac-savoie
    Type of mission: Project management
    Energy: Solar photovoltaic
    Customer: OPAC - Savoie
    Country: France
    Description: Thermal + photovoltaic renovation of an 18-storey high-rise apartment building
  • 57
    Type of mission: Carbon footprint audit
    Customer: SILA (Lake Annecy public-private partnership)
    Country: France
    Description: Carbon footprint audit of 10 sites covering 3 activities: waste incineration, wastewater treatment, and tertiary
  • Cadastre solaire Annecy
    Link on the Geoportal
    Type of mission:
    Solar cadastre
    Energy: Solar
    Customer: City of Annecy
    Partners: Geomap-Imagis & LesENR
    Country: France
    Description: City-wide solar cadastre + green roof cadastral map
  • pv-audit-technique-1
    Type of mission: Audit
    Energy: Solar photovoltaic
    Power: 6.5 MWp
    Customer: Confidential
    Country: Réunion Island
    Description: Expert appraisal of a ground-mounted power station (premature wear of modules)
  • 39
    Type of mission: Energy yield assessment
    Energy: Solar photovoltaic
    Power: 680 kWp
    Customer: Confidential
    Country: France
    Description: Independent energy yield assessment for four rooftop projects
  • 67
    Type of mission: Feasibility study
    Energy: Multiple renewable energies
    Customer: Confidential
    Country: World
    Description: Renewable energy power supply for 20 cement plants in Europe, Africa, Asia, Latin America and USA
  • 76
    Type of mission: Energy audit
    Customer: City of Frontenex
    Country: France
    Description: School, community center and gym
  • AMO-Slovaquie
    Type of mission: Project management
    Energy: Solar photovoltaic
    Power: 10 MWp
    Customer: SUNEOL Slovakia
    Country: Slovakia
    Description: Seven ground-mounted photovoltaic power plants
    - Engineering of the projet: sizing and optimisation, plans, schematics, drawings, calculation notes
    - Works follow-up
    - Commissionning of the plants
    - Monitoring of the performance during one year after commisioning
  • 46
    Type of mission: Consulting
    Energy: Solar
    Customer: ARCSIS
    Country: France
    Description: Support for several semiconductor manufacturers in diversifying into solar energy
  • MO-maison-ZEN-2
    Type of mission: Project management
    Energy: Solar photovoltaic
    Customer: SAS La Maison Z.E.N.
    Country: France
    Description: Two ZEN homes (Zero Energy Net)
  • Bilan Carbone ISOVER
    Type of mission: Carbon footprint audit
    Customer: St Gobain - ISOVER
    Country: France
    Description: Carbon footprint audit of the largest glass wool factory in Europe
  • 65
    Type of mission: Technical support
    Energy: Solar photovoltaic
    Customer: Point P
    Country: France
    Description: Design and energy optimization of a commercial building
  • assistance-technique-burkina-faso
    Type of mission: Project management
    Energy: Solar photovoltaic
    Power: 3.7 MWp
    Customer: AFD
    Country: Burkina Faso
    Description: Eight grid-tied ground-mounted power stations and hybrid (PV-generator) over a mini-grid
    - sites analysis
    - sizing of Hybrid PV Power plants, including diesel generators and storage
    - economics of the projects
    - preparation of the draft of terms of reference for the recruitment of EPCs
  • 54
    Type of mission: Energy audit
    Customer: Miscellaneous
    Country: France
    Description: Four condominiums (160 lots) in Marseille
  • 34
    Type of mission: Solar cadastre
    Energy: Solar photovoltaic and thermal
    Customer: Plaine Commune municipal association
    Country: France
    Description: Solar Cadastre - Ile St Denis eco-district
  • 40
    Type of mission: Energy yield assessment
    Energy: Solar photovoltaic
    Power: 410 kWp
    Customer: Confidential
    Country: France
    Description: Independent energy yield assessment for two rooftop projects
  • 45-1
    Type of mission: Market research
    Energy: Multiple renewable energies
    Customer: INES-CEA
    Country: World
    Description: Market research in 11 countries (MENA, Africa, Asia and South America)
  • MO-bbc-solar-pv-toiture-terrasse
    Type of mission: Project management
    Energy: Solar photovoltaic
    Power: 200 kWp
    Customer: BBC Solar
    Country: France
    Description: Rooftop installation for a shopping mall (four buildings)
  • pv-audit-technique-3
    Type of mission: Due diligence
    Energy: Solar photovoltaic
    Customer: Confidential
    Country: France
    Description: Takeover of 30 rooftop installations (70 to 450 kWp): complete technical audit of the installations + financial analysis
  • pv-qbe
    Type of mission: Audit
    Energy: Solar photovoltaic
    Customer: QBE
    Country: France
    Description: Audits of grid-tied installations and stations under construction + Assessment of BIPV processes and materials used, company organization
  • Bilan Carbone Chambery Metropole
    Type of mission: Carbon footprint audit
    Customer: Chambéry Métropole
    Country: France
    Description: Carbon footprint audit of a municipal association
  • 48
    Type of mission: Consulting
    Energy: Solar photovoltaic
    Customer: First Solar, Sulfurcell, Martifer
    Country: World
    Description: Factory audits and module benchmarking: support for investing in a module production line
  • 77
    Type of mission: Feasibility study - Smart grid
    Energy : Solar photovoltaic
    Customer: City of Besançon
    Country: France
    Description: Self-consumption feasibility study for five buildings, including energy control
  • 50-après
    Type of mission: Technical support
    Energy: Solar photovoltaic + heat pump
    Customer: Mr. Grelier
    Country: France
    Description: Technical support on a renovation to achieve zero energy net performance
  • 44
    Type of mission: Consulting
    Energy: Solar photovoltaic
    Customer: Confidential
    Country: World
    Description: Technical/economic analysis and optimization of the hybrid PV/generator power stations
  • diagnostic-thermique-college-savoie
    Type of mission: Energy audit
    Customer: Savoie Departmental Council
    Country: France
    Description: Three high schools in Savoie
  • 72
    Type of mission: Project management
    Energy: Solar photovoltaic
    Power: 90 KWp
    Customer: SCIC-AS ENER'GUIL
    Country: France
    Description: Village power station for the Queyras Regional Nature Park (10 buildings)
  • 36
    Type of mission: Audit
    Energy: Solar photovoltaic
    Power: 250 kWp
    Customer: Confidential
    Country: France
    Description: Audit of an agricultural rooftop installation
  • Bilan Carbone - Savoie Dechets
    Type of mission: Carbon footprint audit
    Customer: Savoie Déchets
    Country: France
    Description: Carbon footprint audit of an energy recovery and waste treatment center
  • 66
    Type of mission: Feasibility study
    Energy: Multiple renewable energies
    Customer: Fermes des Portes du Sahara power station
    Country: Morocco
    Description: Comparative study for incorporating renewable energies into greenhouses (15 acres): solar thermal, PV, CSP, wind power, heat pump
  • 79
    Type of mission: Technical support
    Energy: Solar photovoltaic
    Power: 1.2 MWp
    Customer: Vaucluse Departmental Council
    Country: France
    Description: Construction of photovoltaic installations at eight high schools in the Vaucluse department
  • 64
    Type of mission: Technical support
    Energy: Solar thermal
    Customer: National Forestry Commission
    Country: France
    Description: Design and energy optimization of a park ranger's house
  • 78
    Type of mission: Solar mapping
    Energy: Solar hybrid
    Customer: Confidential
    Country: World
    Description: Global map of hybrid PV systems (combined with generators), with or without storage
  • 49
    Type of mission: Consulting
    Energy: Solar
    Customer: Confidential
    Country: World
    Description: Opportunity analysis for an innovative solar technology in a dozen countries and for a dozen industrial applications
  • 53
    Type of mission: Energy audit
    Customer: Miscellaneous
    Country: France
    Description: Three condominiums in the Paris area (20 to 200 lots)
  • diagnostic-toiture-etude-PV-lycees-bretons
    Type of mission: Feasibility study
    Energy: Solar photovoltaic
    Customer: Brittany Regional Council
    Country: France
    Description: 108 public high schools in Brittany
  • Bilan Carbone CG79
    Type of mission: Carbon footprint audit
    Customer: Deux-Sèvres Departmental Council
    Country: France
    Description: Carbon footprint audit for the Deux-Sèvres Departmental Council
  • 47
    Type of mission: Consulting
    Energy: Solar
    Customer: INES-CEA
    Country: France
    Description: Greenhouses: state of the art and R&D opportunities
  • 57
    Type of mission: Energy audit
    Customer: SILA (Lake Annecy public-private partnership)
    Country: France
    Description: Head office: 2,000 m² administrative building
  • pv-audit-technique-2
    Type of mission: Due diligence
    Energy: Solar photovoltaic
    Power: 1 MWp
    Customer: Confidential
    Country: France
    Description: Takeover of seven rooftop installations: complete technical audit of the installations + financial analysis
  • MO-ombrieres-agricoles
    Type of mission: Project management
    Energy: Solar photovoltaic
    Power: 6 MWp
    Customer: SUNEOL
    Country: France
    Description: Two agricultural photovoltaic shade screens
    - Engineering of the projet: sizing and optimisation, plans, schematics, drawings, calculation notes
    - Works follow-up
    - Commissionning of the plants
  • Assistance technique photovoltaique - AFD Bolivie 50 MWc
    Type of mission: Technical support
    Energy: Solar photovoltaic
    Power: 50 MWp
    Customer: AFD
    Country: Bolivia
    Description: "Feasibility" and "Contracting" phases for a ground-mounted power station
    - Review of the deliverables of the feasibility study
    - Preparation of the Terms Of References for the recruiment of the EPC
    - Assistance during the evaluation process
  • Bilan Carbone - Tunnel Nice
    Type of mission: Carbon footprint audit
    Customer: GHELLA S.P.A.
    Country: France
    Description: Carbon footprint audit for a tunnel excavation in Nice for a new tramway line
  • 52
    Type of mission: Energy audit
    Energy: Solar photovoltaic + heat pump
    Customer: Confidential
    Country: France
    Description: Condominium comprising 38 lots in Courchevel
  • 73
    Type of mission: Complete technical study
    Energy: Solar photovoltaic
    Power: 25 MWp
    Customer: Armorgreen
    Country: France
    Description: Ground-mounted photovoltaic power plants, parking lot photovoltaic shade screens and rooftop photovoltaic power plants (12 projects)
    (18 MWp of ground-mounted PV plants)
    - drawings and plans for construction permits
    - detailed sizing, including cables and protection devices
  • 43
    Type of mission: Consulting
    Energy: Solar photovoltaic
    Customer: Confidential
    Country: World
    Description: Strengths and weaknesses of thin-film solar cells, focus on CIGS cells: technical analysis (SWOT), global market, industrial and research firms
  • etude-faisabilite-plateau-leysse
    Type of mission: Feasibility study
    Energy: Solar photovoltaic and thermal
    Customer: Rhône-Alpes Energie Environnement (RAEE)
    Country: France
    Description: Village power station for the Bauges Regional Nature Park
  • Bilan Carbone - Yeo international
    Type of mission: Carbon footprint audit
    Customer: Yeo International
    Country: France
    Description: Carbon footprint audit of a dairy plant
  • MO-reflection-toiture-Allier
    Type of mission: Project management
    Energy: Solar photovoltaic
    Power: 100 kWp
    Customer: SDE03 (Allier Energy Committee)
    Country: France
    Description: Complete overhaul of four rooftop installations with roof space insulation for public access buildings (schools, museum)
  • 58
    Type of mission: Design study
    Customer: Bauges Regional Nature Park
    Country: France
    Description: Extension to the park's visitor center
  • etude-opportunite-mauritanie
    Type of mission: Opportunity study
    Energy: Solar photovoltaic
    Power: 100 MWp
    Customer: Department of Energy
    Country: Mauritania
    Description: Ground-mounted solar power plant
    Technico-economic comparison of several solar technologies (PV, CPV, CSP):
    - Solar Resource + Yields Evaluation
    - Costs (Investment + O&M) evaluation
    - Economic figures calculation
  • Bilan Carbone LGR Emballages
    Type of mission: Carbon footprint audit
    Customer: LGR Packaging
    Country: France
    Description: Carbon footprint audit of two cardboard packaging production sites
  • etude-opportunite-ville-lyon
    Type of mission: Opportunity study
    Energy: Solar photovoltaic
    Customer: City of Lyon
    Country: France
    Description: Property assets of the City of Lyon (288 assets, nearly 10,000 roofs analyzed)
  • AMO-college-vaucluse
    Type of mission : Feasibility study
    Energy : Solar photovoltaic
    Customer: Vaucluse Departmental Council
    Country: France
    Description: 25 high schools in the Vaucluse department
  • Bilan Carbone JO Annecy 2018
    Type of mission: Carbon footprint audit
    Customer: Annecy Organizing Committee for the 2018 Olympics
    Country: France
    Description: Provisional carbon footprint audit for the transport component of the Annecy 2018 Winter Olympics
  • etude-faisabilite-plaine-commune
    Type of mission: Feasibility study
    Energy: Solar photovoltaic
    Customer: Plaine Commune municipal association
    Country: France
    Description: 30 industrial and commercial buildings
  • etude-potentiel-aeroport-bretagne
    Type of mission: Feasibility study
    Energy: Solar photovoltaic
    Customer: Brittany Regional Council
    Country: France
    Description: Four airports in Brittany
  • diagnostic-PV-college-lot-garonne
    Type of mission: Technical support
    Energy: Solar photovoltaic
    Customer: Lot-et-Garonne Departmental Council
    Country: France
    Description: 27 high schools in the Lot-et-Garonne department
  • 38
    Type of mission: Solar mapping
    Energy: Solar
    Customer: INES-CEA
    Country: World
    Description: Global maps for comparing PV - CSP - CPV technologies
  • diagnostic-PV-college-maine-loire
    Type of mission: Feasibility study
    Energy: Solar photovoltaic
    Customer: Anjou Energies Renouvelables (public-private partnership)
    Country: France
    Description: 50 public high schools in the Maine-et-Loire department and 100 communal buildings
  • 68
    Type of mission: Feasibility study
    Energy: Solar photovoltaic
    Customer: City of Bordeaux
    Country: France
    Description: City of Bordeaux's building assets (31 buildings)
  • etude-potentiel-PV-Tarascon
    Type of mission: Technical support
    Energy: Solar photovoltaic
    Customer: City of Tarascon
    Country: France
    Description: City of Tarascon's building assets (nine buildings)
  • AMO-installations-PV-nueil-les-aubiers
    Type of mission: Project management
    Energy: Solar photovoltaic
    Power: 80 kWp
    Customer: City of Nueil-les-Aubiers
    Country: France
    Description: Construction of photovoltaic installations at four buildings
  • etude-potentiel-PV-eau-paris
    Type of mission: Feasibility study
    Energy: Solar photovoltaic
    Customer: Eau de Paris
    Country: France
    Description: Eau de Paris's extramural assets (20 industrial sites)
  • diagnostic-PV-college-val-oise
    Type of mission: Feasibility study
    Energy: Solar photovoltaic
    Customer: Val d'Oise Departmental Council
    Country: France
    Description: Eight public high schools in the Val d'Oise department
  • 63
    Type of mission: Feasibility study
    Energy: Solar thermal
    Customer: City of Montmélian
    Country: France
    Description: Integration of a solar wall at an inter-municipal gym in Montmélian
  • 17
    Type of mission: Feasibility study
    Energy : Solar photovoltaic
    Customer: City of Nueil-les-Aubiers
    Country: France
    Description: Nueil-les-Aubiers' building assets (16 buildings
  • etude-technique-centrale-PV-photosol
    Type of mission: Technical study
    Energy: Solar photovoltaic
    Power: 12 MWp
    Customer: Photosol
    Country: France
    Description: Ground-mounted power station
    - design and sizing of the plant
    - GCR (Ground Cover Ratio) optimization
    - plans and drawings
  • AMO-helios-dynamic
    Type of mission: Project management
    Energy: Solar photovoltaic
    Power: 45 kWp
    Customer: Helios Dynamic
    Country: France
    Description: Rooftop installation for a new professional building
  • MO-bbc-solar
    Type of mission: Project management
    Energy: Solar photovoltaic
    Power: 100 kWp
    Customer: BBC Solar
    Country: France
    Description: Rooftop installation for an industrial building with asbestos removal and reinforcements to the roof structure
  • AMO-college-drome
    Type of mission: Feasibility study
    Energy: Solar photovoltaic
    Customer: Drôme Departmental Council
    Country: France
    Description: Seven high schools in the Drôme department
  • etude-technique-centrale-PV-sorgenia
    Type of mission: Technical study
    Energy: Solar photovoltaic
    Power: 12 MWp
    Customer: Sorgenia
    Country: France
    Description: Ground-mounted power station
    - site and risks analysis
    - mounting solutions survey
    - design and optimization of GCR (Ground Cover Ratio)
    - single-wire diagram
    - yield computation and economic analysis, NPV (Net Present Value) optimization
  • assistance-technique-egypte
    Type of mission: Technical support
    Energy: Solar photovoltaic
    Customer: AFD
    Country: Egypt
    Description: Supervision of a feasibility study for a 20 MW ground-mounted photovoltaic power plant
    - Preparation of the Terms Of Reference of the feasibility study
    - Assistance during the recruitment process
    - Review of the deliverables of the feasibility study
    - Assistance for the recruitment of the Owner's Engineer
  • Technical Assistance for Minigrids in Kenya
    Type of mission: Technical support
    Energy: Solar photovoltaic
    Customer: AFD
    Country: Kenya
    Description: Technical assistance for a 23 minigrids (genset + PV + wind) project
    - Analysis of previous studies
    - Preparation of the Terms of Reference to recruit a Consultant for the feasibility study and technical support during construction (Owner's Engineer)
    - Price estimation and planning
    - Scoring system for bids' analysis
  • 50 MWp project in Tanzania
    Type of mission: Technical support
    Energy: Solar photovoltaic
    Customer: AFD
    Country: Tanzania
    Description: Technical assistance for the development of a 50 MWp PV plant
    - Analysis of existing material
    - Preparation of the Terms of Reference to recruit a Consultant for the feasibility study
    - Training of Tanesco's people
    - Analysis of the Tanzania's solar sector
  • 71
    Type of mission: Project management
    Energy: Solar photovoltaic
    Power: 70 KWp
    Customer: SAS PERLE
    Country: France
    Description: Village power station for the Bauges Regional Nature Park (seven buildings)