Hello Watt offers a free mobile app that aggregates real‑time electricity, gas and CO₂ consumption data across all French energy providers, letting homeowners monitor usage, detect anomalies and receive personalized efficiency advice. The platform also provides end‑to‑end energy renovation services—including certified audits, subsidy calculations, detailed quotes, supplier comparison, and installation by RGE‑certified technicians—while continuing to track post‑renovation savings within the app.
Funding
$12.9M raised to dateRaised to date based on public sources. This may differ from the amount the company actually raised and is based only on what is publicly available on the internet.
Founders
Product
Problem
Homeowners and renters often face high energy bills and difficulty identifying where energy is wasted, while navigating complex renovation options, subsidies, and supplier contracts can be time‑consuming and confusing.
Solution
Hello Watt provides a free mobile app that aggregates real‑time electricity, gas and CO₂ consumption data across all providers, enabling users to monitor usage, detect anomalies and receive personalized efficiency recommendations. The platform offers a full audit service performed by certified RGE professionals, calculates the profitability of renovation measures (insulation, windows, heating, solar PV, etc.) and integrates available financial aids (MaPrimeRénov’, CEE, eco‑PTZ). Users can obtain a detailed, aid‑adjusted quote, compare over 40 energy suppliers, and subscribe to a new contract in minutes. Certified technicians from the Hello Watt network then execute the selected works, while the app continues to track post‑renovation savings.
Target Audience
Primary customers are individual homeowners and landlords in France who own or manage residential properties and seek to reduce energy costs, improve building performance, and access renovation subsidies.
Features
- Free consumption dashboard showing kWh, € and CO₂ for electricity and gas, with anomaly alerts
- Energy audit by certified RGE experts, delivering a diagnostic report and prioritized renovation actions
- Automated calculation of subsidy eligibility (MaPrimeRénov’, CEE, eco‑PTZ, TVA) and integration into a single, transparent quote
- End‑to‑end project management: from quote generation, supplier comparison, contract signing, to scheduling of RGE‑certified installers
- Real‑time post‑installation monitoring of energy savings and carbon reduction within the app
- Integrated marketplace for solar PV kits, heat‑pump installations and connected thermostats, with plug‑and‑play options
- Compatibility with smart home devices for remote heating control and demand‑side management