Hello Watt

What Hello Watt does

Hello Watt is a Paris-based consumer energy platform founded in 2017 by Sylvain Le Falher and Xavier Coudert. The company combines a free mobile and desktop application — downloaded over 3 million times and serving more than 2 million users — for energy consumption tracking and supplier comparison with an end-to-end home energy renovation service. The app integrates with French grid operators Enedis (Linky smart meter data), GRDF (gas consumption), and RTE (Ecowatt grid-stress alerts) to deliver personalized recommendations, anomaly detection, and predictive analytics powered by the company's in-house Data team. The platform covers more than 40 electricity suppliers, 23 gas suppliers, and 160+ energy offers, alongside a portfolio of installation services (solar panels, heat pumps, insulation, EV charging, connected thermostats, boiler maintenance) delivered through a nationwide network of audited RGE-certified technicians.

The business model is built on three monetization streams: affiliate commissions from energy suppliers when users subscribe through the comparison platform, valorization of energy savings as Certificats d'Économies d'Énergie (CEE) under the BAR-SE-106 framework (which underwrites the free consumer experience), and revenue from facilitating paid renovation projects with subsidies (MaPrimeRénov', CEE) automatically deducted from quotes and administered by Hello Watt. Distribution combines direct-to-consumer digital channels (app, website, phone support) with a B2B2C layer of real estate agency partnerships (Century 21, Laforêt, SG, Crédit Agricole, LCL, Sixième Avenue). After six years of self-financed growth, Hello Watt raised €12 million in November 2023 from BNP Paribas Solar Impulse Venture Fund and Starquest Capital to expand the team to over 280 employees and launch services in additional European markets following a 2023 pilot in Spain.

Name

Hello Watt

Legal name

Hello Watt

Website

https://hellowatt.fr

Company type

Private

Founded year

2017

Operating status

Operating

Headcount range

101–250 employees

Short description

Hello Watt is a Paris-based consumer energy platform combining a free app for consumption tracking and supplier comparison with end-to-end home energy renovation services, serving over 2 million users across France and piloting in Spain.

Ownership category

akta.pro rank

Product category

Residential Energy Management and Home Renovation Services

NAICS

Electric Power Generation, Transmission and Distribution (2211)

SIC

Electric, Gas & Sanitary Services (4900), Electric Services (4911)

akta.pro primary industry

Customer Energy Engagement (In-Home Displays, Portals, Usage Insights) (EUADAFAH)

akta.pro secondary industries

DER Program Operations & Customer/Installer Enablement (Applications, Portals, Inspections) (EUADALAO), Demand Response & Load Flexibility Services (EUAMAJAF)

Keywords

• Energy supplier comparison
• Home energy renovation
• Solar panel installation
• Heat pump installation
• Energy consumption tracking

Headquarters

HQ city

Paris

HQ country

France

HQ region

Europe

Offices1 record

Markets served

GTM type

B2C

Offering type

Services

Cost components

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

Revenue model

1. Supplier Referral Commissions: Hello Watt receives commissions from energy suppliers when customers subscribe through their comparison platform. The service is free for consumers as Hello Watt is compensated by partner suppliers. This is the primary revenue driver for the comparison service.
2. Energy Efficiency Certificates (CEE): Revenue generated by valorizing energy savings achieved through user actions and renovation projects as CEE certificates. The free app is made possible through this valorization (BAR-SE-106). This creates a sustainable revenue stream aligned with energy savings outcomes.
3. Renovation Services Facilitation: Facilitates renovation projects (solar panels, heat pumps, insulation) by connecting customers with certified technicians. While the app and comparison are free, revenue may be generated through the renovation project facilitation, including managing subsidies and coordinating work.

Pricing tiers

Go-to-market motion3 records

Distribution channels6 records

Marketing channels6 records

Core offering

Hello Watt provides a free digital platform that combines an energy supplier comparison tool (covering 40+ electricity and 23+ gas suppliers) and a mobile/desktop consumption-tracking application with a full suite of home energy renovation services — solar panel installation, heat pump installation, insulation, EV charging stations, solar batteries, connected thermostats, and boiler maintenance — delivered through a vetted network of RGE-certified technicians across France. The platform handles end-to-end project delivery including subsidy management (MaPrimeRénov', CEE certificates) on behalf of customers.

Product overview

Hello Watt operates as a unified platform combining a free energy comparison and consumption-tracking app with a portfolio of coordinated renovation and installation services. The core platform includes a supplier comparison tool (comparateur électricité et gaz) covering over 40 electricity and 23 gas providers, and a free mobile/desktop app (Suivi conso) that tracks consumption, detects anomalies, and delivers personalized savings recommendations powered by the company's Data algorithms. These are complemented by a suite of installation and renovation services — solar panels, heat pumps, insulation, global renovation, solar batteries, EV charging stations, connected thermostats, and boiler maintenance — all performed by certified RGE-network technicians. Additional offerings include energy audits, a moving service (je déménage), an online store (la boutique), and a group purchasing program (achat groupé). The platform is available across France and piloted in Spain, targeting European expansion.

Differentiator

Problem solved

Functional benefit

Products and services

• Comparateur électricité et gaz (Energy Supplier Comparison Tool) Free online tool that compares over 40 electricity suppliers and 23 gas suppliers to help French consumers find and switch to the best-priced energy offer; subscription can be completed in approximately three minutes via the app, website, or with an expert.
• Application Hello Watt (Suivi conso — Energy Consumption Tracking App) Free mobile and desktop app that tracks household energy consumption in kWh, euros, and CO2, breaks down usage by category, benchmarks the household against similar homes, and delivers personalised recommendations for savings, eco-gestures, and renovations.
• Installation panneaux solaires (Solar Panel Installation) End-to-end photovoltaic solar panel installation service including sizing, profitability studies, and certified RGE installation, with guarantees of up to 40 years; available to French homeowners.
• Pompe à chaleur (Heat Pump Installation) Heat pump installation service (air/water and air/air types) replacing traditional gas or oil boilers, with Hello Watt claiming it can halve energy bills; installed by certified RGE technicians.
• Isolation (murs, combles, fenêtres) — Insulation Services Insulation services covering wall insulation (interior or exterior), attic/crawl space insulation, and window/door replacement, all performed by RGE-certified technicians in the Hello Watt network.
• Rénovation globale (Whole-Home Energy Renovation) Comprehensive whole-home energy renovation service bundling insulation, heating system replacement, and solar installation, coordinated end-to-end by a dedicated Hello Watt renovation expert.
• Batterie solaire (Solar Battery Installation) Solar battery installation service that stores excess photovoltaic energy for use at any time, including during evening and peak-rate periods; offered with up to 15 years of warranty.
• Borne de recharge IRVE (Home EV Charging Station Installation) Smart at-home electric vehicle charging station installation, positioned to integrate with solar panels so owners can charge their EV with self-produced electricity; claimed to be up to 4x cheaper than public charging.
• Thermostat connecté (Connected Thermostat Installation) Connected thermostat installation that optimises heating control to reduce household energy bills, installable as part of Hello Watt's home automation offering.
• Entretien chaudière (Boiler Maintenance) Boiler maintenance service for natural gas and fuel oil boilers, provided by certified technicians in the Hello Watt network.
• Audit énergétique (Energy Audit) Energy audit service that assesses a home's energy performance and identifies the most impactful and cost-effective renovation works to recommend.
• Je déménage (Moving / Contract Transfer Service) Moving service that handles subscription to new energy contracts and cancellation of old contracts for households relocating to a new address.
• Achat groupé (Group Energy Purchasing) Collective purchasing programme aggregating household demand to negotiate discounted rates on energy equipment and services for participating consumers.

Quantifiable outcome

• 15% average reduction in energy consumption during winters 2022-2023 and 2023-2024 compared to winter 2021-2022
• +3 more outcomes

Named customers6 records

Segments4 records

Ideal customer profiles3 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

AI capability7 records

Feature4 records

Partnerships

One partnership is on record.

• EnediscoreTechnology or IntegrationEnedis is the electricity distribution network operator for 95% of France. Hello Watt integrates with Enedis data for consumption tracking, particularly leveraging Linky smart meter data for automated meter reading and real-time consumption analysis.

Scale indicators6 records

Recent moves7 records

Expansion highlights6 records

Direct peers

• Selectra: Selectra is the leading French and European energy and telecom comparison platform, offering free supplier switching services for electricity, gas, and broadband. It is Hello Watt's most direct competitor in the French energy comparison market and operates a similar affiliate-referral revenue model.
• Wekiwi: Wekiwi is a French energy supplier offering competitive electricity and gas tariffs distributed through digital channels including comparison platforms. It operates as both a partner supplier on Hello Watt's platform and a direct competitor for end-consumer energy contracts in France.

Regional players

• ekWateur: ekWateur is a French renewable energy supplier focused on green electricity and gas offers, often listed on Hello Watt's comparison platform. It represents a regional renewable-energy supplier peer competing for the same eco-conscious French consumer segment.

Broad incumbents

• Engie: Engie is one of France's largest energy suppliers and a major provider of home energy renovation, heating, and insulation services. Its broad portfolio in residential energy services and direct customer relationships make it a key incumbent competitor for Hello Watt's renovation offering.
• TotalEnergies (Home Services): TotalEnergies is a major French energy supplier with an expanding residential services offering including solar installation, heating, and insulation through its home services division. Its scale, brand recognition, and direct customer base position it as a broad incumbent competing across multiple Hello Watt product lines.
• EDF (Électricité de France): EDF is France's incumbent electricity supplier, historically state-owned, and offers direct consumer energy management tools, supplier comparison via its own branded offers, and increasingly bundles energy renovation services. EDF's native billing data and massive customer base represent both a partnership channel and a direct competitive threat to Hello Watt.

Emerging players

• Tibber: Tibber is a Norwegian digital energy retailer operating across multiple European markets with a focus on dynamic tariffs, consumption insights, and smart home energy management. Its app-driven model and emphasis on real-time consumption data align closely with Hello Watt's consumer engagement approach.
• SunRoof: SunRoof is a European provider of integrated solar roofs, batteries, and energy management solutions operating across multiple European countries including France, Germany, and the Nordics. It competes with Hello Watt in the residential solar and home energy system installation market with a comparable full-service delivery model.
• Octopus Energy: Octopus Energy is a UK-founded renewable-focused energy supplier that has expanded into France, Germany, and other European markets. Its digital-first approach, smart tariff products, and in-house Kraken technology platform position it as an emerging European peer with overlapping consumer-facing energy management ambitions.

Others

• France Rénov': France Rénov' is the official French government service providing free energy renovation advice and guiding consumers through MaPrimeRénov' and other subsidy programs. While not a commercial competitor, it serves as the primary public alternative for consumers seeking renovation guidance and competes for consumer attention and trust in the same funnel.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat6 records

Key risks6 records

Key highlights7 records

Customer concentration

• Xx.com/hello_watt
• YouTubeyoutube.com/channel/UC3X8oJkYFWaToR3oXKR6NCg
• Facebookfr-fr.facebook.com/hellowatt
• LinkedInfr.linkedin.com/company/hello-watt

Revenue estimate

Valuation estimate

Number of profiles

Profiles2 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 Hello Watt