HEAT Building Stock Model - Emission Reduction Tool

Step 1: Building Stock Data Input

Configure your building stock parameters and emission factors

📊 Data Source Integration

Option 1: Load from Supabase

Connect directly to your Supabase database to sync data automatically

Option 2: Save to Supabase

Save current form data to your Supabase database

Location & Classification

Country: Selecting a country will apply typical EUI and emission factors (currently using estimated values - replace with official data for production use)

Jurisdiction Level:

Building Typologies

Typology 1

Stock Type:

Building Category:

Building Type:

Building Classification:

Total Area (m²):

EUI (kWh/m²/year):

Gas Share (%):

Electricity Share (%):

Embodied Carbon (kgCO₂e/m²): For new/renovated buildings

Operational Energy (MWh/year): Auto-calculated

Portfolio Summary

Total Building Area (m²):

Weighted Average EUI (kWh/m²/year):

Total Operational Energy (MWh/year):

Emission Factors

Emission Factor - Electricity (kgCO₂/kWh):

Emission Factor - Fuel (kgCO₂/kg):

📊 Country Benchmark Comparison

Compare your building stock data against national projections and carbon intensity benchmarks for .

Your Total Floorspace

m²

Country Benchmark (2025)

million m²

Your Operational Carbon

kgCO₂/m²/year

Benchmark Operational Carbon

kgCO₂/m²/year

Your Embodied Carbon

kgCO₂e/m²

Benchmark Embodied Carbon

kgCO₂e/m²

Detailed Floorspace Projections by Building Type

Carbon Intensity Benchmarks

Residential - Operational: kgCO₂/m²/year

Residential - Embodied: kgCO₂e/m²

Commercial - Operational: kgCO₂/m²/year

Commercial - Embodied: kgCO₂e/m²

Institutional - Operational: kgCO₂/m²/year

Institutional - Embodied: kgCO₂e/m²

📌 Data Sources & Methodology

Floorspace Projections:

India: Based on NITI Aayog building stock assessments and urbanization trends
Indonesia: Derived from Ministry of Public Works data and urban development plans
Vietnam: Based on Ministry of Construction building stock reports
Thailand: From Department of Public Works and Town & Country Planning data
Cambodia: Ministry of Land Management urban development projections
Germany: Federal Statistical Office (Destatis) building stock data

Operational Carbon Benchmarks:

Calculated as: Typical EUI (kWh/m²/year) × Grid Emission Factor (kgCO₂/kWh)
EUI values based on national building energy codes and surveys
Grid emission factors from IEA country-specific data (2023)
Residential: Lower EUI due to natural ventilation and simpler systems
Commercial: Higher EUI from HVAC, lighting, and equipment loads
Institutional: Moderate EUI reflecting mixed-use patterns

Embodied Carbon Benchmarks:

Based on typical construction practices and material intensities per region
Includes A1-A5 lifecycle stages (cradle to practical completion)
Values derived from RICS Whole Life Carbon Assessment guidelines
Regional variations account for local material availability and construction methods
Residential: 400-500 kgCO₂e/m² (typical concrete/masonry construction)
Commercial: 450-550 kgCO₂e/m² (higher due to steel, glass, MEP systems)
Institutional: 420-520 kgCO₂e/m² (moderate complexity)

⚠️ Important Note: These are estimated benchmarks based on typical values and regional averages. For official reporting and policy decisions, please replace with verified national data sources and country-specific building standards.

📚 Recommended Data Sources:

IEA Energy Statistics and Balances
IPCC Emission Factor Database
National Building Energy Codes and Standards
RICS Professional Standards (Whole Life Carbon Assessment)
World Green Building Council Reports
National Statistical Offices (Building Stock Data)

Additional Information

Notes/Source of Data:

Continue to Scenario Settings →

Step 2: Scenario Parameters

Configure baseline and future scenarios for emission projections

🎯 Nationally Determined Contribution (NDC) Targets

2035 Emission Reduction Target (% from base year):

2050 Emission Reduction Target (% from base year):

Show NDC targets on charts:

📊 Baseline Scenario

Emission Factor Reduction every 5 years (%):

Building Stock Growth Rate (% per year): Annual growth rate of total building floor area

Annual Retrofit Rate (% of existing stock): Share of existing floor area retrofitted each year

Embodied Carbon Reduction every 5 years (%):

Baseline EUI Change every 5 years (%): Positive values increase energy use intensity in the baseline (e.g. +5% every 5 years); negative values reduce it.

🚀 Futureline 1

Scenario Name:

Emission Factor Reduction every 5 years (%):

Building Stock Growth Rate (% per year): Annual growth rate of total building floor area

Annual Retrofit Rate (% of existing stock): Share of existing floor area retrofitted each year

Embodied Carbon Reduction every 5 years (%):

Notes about scenario assumptions:

🚀 Futureline 2

Scenario Name:

Emission Factor Reduction every 5 years (%):

Building Stock Growth Rate (% per year): Annual growth rate of total building floor area

Annual Retrofit Rate (% of existing stock): Share of existing floor area retrofitted each year

Embodied Carbon Reduction every 5 years (%):

Notes about scenario assumptions:

🚀 Futureline 3

Scenario Name:

Emission Factor Reduction every 5 years (%):

Building Stock Growth Rate (% per year): Annual growth rate of total building floor area

Annual Retrofit Rate (% of existing stock): Share of existing floor area retrofitted each year

Embodied Carbon Reduction every 5 years (%):

Notes about scenario assumptions:

Continue to Run Model & View Results →

Step 3: Results & Visualization

Run the model and view emission projections

Total Emission Reduction by 2070

Peak Emissions Year

Net Zero Year

Cumulative Emissions (MtCO₂)

Million tonnes CO₂

📊 Understanding Emission Units

MtCO₂e = Million tonnes of CO₂ equivalent
1 MtCO₂e = 1,000,000 metric tonnes CO₂e
All emissions in charts and tables are shown in MtCO₂e

For reference: A 100,000 m² building portfolio typically emits 0.010-0.020 MtCO₂e per year.

Whole-Life Carbon Emissions (Operational + Embodied)

Operational Carbon Emissions

Embodied Carbon Emissions

Building Stock Transition

📊 Floorspace Projection vs Country Benchmark

Compare your building stock projections against national benchmarks by building type

🎯 Carbon Intensity vs Benchmark

Your operational and embodied carbon compared to national benchmarks

Detailed Results

← Back to Data Input

Step 1: Building Stock Data Input

📊 Data Source Integration

Option 1: Load from Supabase

Option 2: Save to Supabase

Location & Classification

Building Typologies

Typology 1

Portfolio Summary

Emission Factors

📊 Country Benchmark Comparison

Your Total Floorspace

Country Benchmark (2025)

Your Operational Carbon

Benchmark Operational Carbon

Your Embodied Carbon

Benchmark Embodied Carbon

Performance Assessment

Detailed Floorspace Projections by Building Type

Carbon Intensity Benchmarks

📌 Data Sources & Methodology

Floorspace Projections:

Operational Carbon Benchmarks:

Embodied Carbon Benchmarks:

Additional Information

Step 2: Scenario Parameters

🎯 Nationally Determined Contribution (NDC) Targets

📊 Baseline Scenario

🚀 Futureline 1

🚀 Futureline 2

🚀 Futureline 3

Step 3: Results & Visualization

🔄 Model Running...

Total Emission Reduction by 2070

Peak Emissions Year

Net Zero Year

Cumulative Emissions (MtCO₂)

📊 Understanding Emission Units

Whole-Life Carbon Emissions (Operational + Embodied)

Operational Carbon Emissions

Embodied Carbon Emissions

Building Stock Transition

📊 Floorspace Projection vs Country Benchmark

🎯 Carbon Intensity vs Benchmark

Detailed Results