A scientific model built on real data — not estimates. Transparent, reproducible, grounded in European best practices.
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pillars
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postal codes
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scientific sources
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transparent
The Azimut autonomy score quantifies the residential resilience potential of a household: its capacity to produce energy, collect and recycle water, and source fresh food from its own physical characteristics and installed systems. It is a potential performance indicator, not a real consumption audit.
Each pillar is calibrated against reference values published by recognised organisations (European Commission JRC, INRAE, ADEME/CSTB, Eurostat). Calculation parameters are aligned with sector standards in force for sustainable housing.
What it measures
This pillar evaluates a household's photovoltaic solar production capacity based on its roof characteristics and the real solar irradiation at its precise geographic location, compared to its annual electricity consumption — declared or estimated.
Data & calibration
Solar irradiation is provided in real-time by the European Commission's PVGIS API (JRC), which compiles satellite measurement data over more than 15 years. The systemic efficiency factor applied (Performance Ratio) conforms to IEC 61724 for residential installations in Europe.
Why this weight
Energy carries the highest weight (40%) because it delivers the most direct, measurable, and immediate return on investment for the majority of European households.
What it measures
This pillar evaluates a household's capacity to cover part of its non-potable water needs (sanitation, irrigation, washing) through rainwater harvesting via its roof, supplemented where applicable by a greywater system or well.
Data & calibration
Coverage caps by climate zone are derived from the ADEME/CSTB rainwater-harvesting guide, the French and European reference for this type of calculation. Annual rainfall figures are derived from the home's geographic latitude.
Why this weight
Water carries 25% of the score. Its growing scarcity under climate change — particularly in Mediterranean and continental zones — makes it a major resilience issue for the coming decades.
What it measures
This pillar evaluates a household's fresh fruit and vegetable production capacity based on its cultivable garden area, the presence of a greenhouse or small livestock, measured against the standard dietary needs of its occupants.
Data & calibration
The food-requirement reference (annual fresh fruit and vegetables per person) is the one published by INRAE in its sustainable-food framework. The reference yield-per-area comes from experimental measurements on market gardens of comparable size.
Why this weight
Food carries 20% of the score. Local fruit and vegetable production is the most accessible autonomy lever for the majority of homeowners, with a strong impact on food carbon footprint and logistical resilience.
What it measures
This pillar evaluates the share of heating needs covered by low-carbon solutions — heat pump, wood or pellet stove, solar heat — weighted by the home's insulation quality.
Data & calibration
Reference heating needs come from RE2020/RT2012 (EU) and EIA RECS (US) standards, adjusted to local heating degree-days. Heat-pump performance uses a COP of 3.5 (ASHRAE 90.1).
Why this weight
Heating carries 15% of the score. It is often the household's largest energy expense; reducing it through insulation and renewable heat has a strong impact on autonomy and carbon footprint.
0–29
Getting Started
Your home is grid-dependent. High potential for quick wins.
30–59
Growing
You've started producing your own resources. Big gains possible with targeted investment.
60–79
Advanced
Significant autonomy achieved. You're ahead of 90% of European households.
80–95
Champion
Near-complete autonomy. You're a model for resilient living.
The score is capped at 95 — never 100. Full autonomy is a journey, not a checkbox.
Baseline derived from Eurostat residential energy data and JRC autonomy studies.
The Azimut model is built entirely on public data from European and national reference organisations. No proprietary data or private statistical models are used. Every source can be consulted directly.
JRC PVGIS
European Commission
Used for
Annual solar irradiation (kWh/m²/yr) by GPS coordinates, integrated into each energy score calculation in real time.
Why it's authoritative
The European Commission's solar reference database, built on 15+ years of MERRA-2 and CMSAF satellite measurements.
EIA RECS
U.S. Energy Information Administration
Used for
Reference data on market-garden food production and annual per-person requirements for fresh fruit and vegetables.
Why it's authoritative
France's national public research institute for agriculture, food and the environment — the leading scientific body on these subjects.
NOAA
National Oceanic & Atmospheric Admin.
Used for
Regulatory rainwater-coverage caps by climate zone, plus carbon-impact ratios for the circularity pillar.
Why it's authoritative
France's ecological transition agency — its technical guides are the reference for the sustainable-building sector in France.
USDA
U.S. Dept. of Agriculture
Used for
Average residential electricity prices by country (updated annually), used to compute projected financial savings.
Why it's authoritative
The statistical office of the European Union — the official source of energy-price data harmonised across the continent.
EPA
Environmental Protection Agency
Used for
Geolocated natural-hazard data (flooding, earthquake, radon, wildfire) used in the Risk Exposure section.
Why it's authoritative
Géorisques is the official national platform of France's Ministry of Ecological Transition, fed by the BRGM geological survey.