HEMERA ENERGY

What HEMERA ENERGY does

HEMERA ENERGY, founded in 2014 and headquartered in Paris with an engineering office in Levallois-Perret, is a French energy renovation specialist serving residential, tertiary, and social-housing clients. The company operates as a confirmed mandataire in the CEE (Certificats d'Économies d'Énergie) framework and delivers a portfolio of nine core services spanning calorifugeage (pipe insulation), insulation of singular points, floor slabs, lost attics, flat roofs and external walls (ITE), connected thermostats via a partnership with Thaleos, heat recovery from cold production units, and collective boiler replacement with high-efficiency condensing technology. Its operations are anchored in COFRAC-accredited quality control and ISO 9001 certification (obtained September 2024), and the company holds RGE certification alongside ATEE and Ademe affiliations. The 34-expert team, led by founder Myriam Mahboub and partner Mehdi Chergui, supports full-cycle delivery from energy audit and engineering study through works execution and administrative management of CEE dossiers.

The business model is project-based professional services revenue, with quotes tailored to building characteristics and eligible work types, financed up to 100% through CEE subsidies. Go-to-market is enterprise field sales targeting property managers, social landlords (bailleurs sociaux), building cooperatives, and tertiary operators subject to the Éco Énergie Tertiaire decree; named customers include Foncia, Nexity, Oralia, Sergic, and Logeo Seine. Distribution is primarily direct via the engineering office and a Calendly-based appointment funnel, supplemented by LinkedIn/Instagram presence and event participation (Salon de la Copropriété, POwR.Earth Summit). The company previously operated under the Iso Tech Energie brand, which remains reflected on its social channels. No external funding rounds, M&A activity, or geographic expansion beyond France have been disclosed.

Name

HEMERA ENERGY

Legal name

HEMERA ENERGY

Website

https://hemera-energy.fr

Company type

Private

Founded year

2014

Operating status

Operating

Headcount range

11–50 employees

Short description

HEMERA ENERGY is a Paris-based energy renovation specialist serving French residential, social-housing, and tertiary clients with insulation, heat recovery, boiler replacement, and CEE financing administration through a 34-expert engineering team.

Ownership category

akta.pro rank

Product category

Building Energy Renovation Services

NAICS

Drywall and Insulation Contractors (238310)

akta.pro primary industry

Reflective Insulation & Radiant Barriers (IMADAGAF)

akta.pro secondary industries

Roof Ventilation & Attic Venting Upgrades (HSAPAKAI), Radiant Floor Heating Installation (HSAOAGAG)

Keywords

• Energy renovation services
• Thermal insulation works
• CEE financing intermediation
• Heat recovery systems
• Building energy efficiency

Headquarters

HQ city

Paris

HQ country

France

HQ region

Europe

Offices2 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

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

Revenue model

1. CEE Mandatary Services: As a confirmed mandataire in the CEE (Certificats d'Économies d'Énergie) framework, HEMERA ENERGY accompanies companies and local authorities in financing their energy efficiency improvement works. The company handles the complete administrative process from energy audit through CEE certificate validation by PNCEE and payment of subsidies.
2. Energy Renovation Works: Direct execution of energy renovation works including insulation services (calorifugeage, loft, roof, wall, floor insulation), heat recovery system installation, connected thermostat installation, and collective boiler replacement. Revenue generated through service fees for technical studies, project management, and works execution.

Pricing tiers

Go-to-market motion2 records

Distribution channels3 records

Marketing channels7 records

Core offering

HEMERA ENERGY is a French energy renovation specialist founded in 2014 that delivers professional insulation and energy efficiency services for residential, tertiary, and social housing buildings. Its portfolio includes nine service lines covering pipe insulation (calorifugeage), singular point insulation, floor/attic/flat roof/external wall insulation, connected thermostats, heat recovery systems, and collective boiler replacement, complemented by CEE (Certificats d'Économies d'Énergie) financing intermediation as a confirmed mandataire.

Product overview

HEMERA ENERGY is a specialist in energy renovation for professionals since 2014, offering a comprehensive portfolio of energy efficiency services centered around a portfolio of 9 core insulation and energy optimization offerings: Calorifugeage (pipe insulation), Isolation des points singuliers (singular point insulation), Isolation des planchers bas (floor slab insulation via projection), Isolation des combles perdus (attic insulation), Isolation des toitures terrasses (flat roof insulation), Isolation thermique extérieure (external thermal insulation), Thermostats connectés (connected thermostats with Thaleos partnership), Système de récupération de chaleur (heat recovery systems), and Remplacement de chaudière collective (collective boiler replacement). The company also provides CEE (Certificates of Energy Savings) financing assistance as a Mandataire CEE, and serves three sectors: residential, tertiary, and social landlords. Services include energy audits, work management, and quality control (COFRAC certified).

Differentiator

Problem solved

Functional benefit

Products and services

• Calorifugeage (Pipe Insulation) Insulation of heating pipe networks carrying hot water from collective boilers to apartments in residential buildings, also applicable to tertiary buildings such as hospitals, schools, offices, and shopping centers. The service prevents thermal losses, reduces CO2 emissions, and protects against freezing.
• Isolation des points singuliers (Singular Point Insulation) Insulation of valves, faucets, reducers, meters, and hot spots present in boiler rooms and sub-stations using removable mineral wool mattresses with technical fabric coating, complementing pipe insulation to reduce thermal losses.
• Isolation des planchers bas (Floor Slab Insulation) Insulation technique using projection of fibrous insulating material (flocage) on floor slabs and ceilings with a minimum thickness of 12 cm, using slag wool applied with three possible finishes (raw, troweled, or rolled projection) for thermal and acoustic insulation.
• Isolation des combles perdus (Attic Insulation)

Quantifiable outcome

• Up to 15% reduction in heating bills with connected thermostats
• +2 more outcomes

Named customers5 records

Segments4 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature3 records

Scale indicators5 records

Recent moves6 records

Expansion highlights5 records

Direct peers

• Hello Watt: French energy renovation platform providing insulation, heating, and photovoltaic installations with integrated CEE financing. Comparable customer segment (residential/tertiaire) and bundled financing-plus-execution model.
• Effy: French energy renovation platform (formerly Quelle Energie) connecting homeowners to certified contractors and managing CEE/prime financing. Direct competitor in French residential energy efficiency services with overlapping customer base and financing-adjacent model.
• IZI by EDF: EDF subsidiary offering turnkey residential and tertiary energy renovation services across France. Closely comparable as a one-stop provider covering audit, financing administration (CEE/MaPrimeRénov'), and works execution — the same bundle HEMERA sells.

Broad incumbents

• SPIE France: Multi-technical services group operating across electrical, mechanical, and energy efficiency contracting in France. Comparable services include building insulation, HVAC retrofits, and energy performance contracts for tertiary clients.
• Eiffage Énergie Systèmes: French construction and energy services division offering HVAC, electrical, and energy renovation for buildings. Competes with HEMERA on tertiary-sector energy retrofits and boiler replacement projects but with broader infrastructure portfolio.
• Bouygues Energies & Services: Energy and digital services arm of Bouygues covering building energy efficiency, HVAC, and facility management. Comparable on tertiary and multi-site renovation frameworks where HEMERA competes but at corporate-group scale.
• ENGIE Solutions: Large French energy services subsidiary of ENGIE providing building energy efficiency, HVAC, and renovation across all sectors. Overlaps with HEMERA's tertiary-sector and boiler-replacement offerings but operates at vastly larger scale with national coverage.
• TotalEnergies Home Services: TotalEnergies' residential heating and energy services subsidiary in France. Overlaps with HEMERA's boiler replacement, connected thermostat installation, and heating network services but with brand and capital advantages.

Emerging players

• PrimesEnergie: French energy renovation platform operated by TotalEnergies, focused on CEE-financed insulation and heating works for residential clients. Comparable digital-first model pairing CEE/prime financing with certified contractor fulfillment.
• Ideoz: French energy renovation specialist supporting co-property managers and social housing operators with audit, CEE financing, and works coordination. Direct overlap with HEMERA's syndic and bailleur sociaux customer segments.

Market position

Strengths4 records

Weaknesses4 records

Competitive moat4 records

Key risks6 records

Key highlights6 records

Customer concentration

• LinkedInlinkedin.com/company/hemera-energy-fr
• Instagraminstagram.com/isotechenergie

Compliance7 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles2 records

Funding overview

Funding rounds

Investors

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 HEMERA ENERGY