The full environmental accounting of turning post-consumer plastic into thermal housing.
30-SEC BRIEF
A Thermopod Terrapod LCA (cradle to grave): 8.2 kilograms CO2 embodied (clay firing, transport, growing medium production). Annual carbon offset from cooling (displacement of mechanical HVAC): 2.1 metric tonnes CO2 equivalent. Payback: 4.7 days.
2-MIN SUMMARY
Life-cycle assessment (LCA) quantifies the environmental cost of manufacturing, transporting, using, and recovering a product. For a Thermopod unit, the LCA includes: (1) Terracotta vessel manufacture (kiln firing, transport). (2) Growing medium production (coconut coir processing, composting). (3) Areca palm propagation and transport. (4) Steel frame manufacturing and coating. (5) Electronics manufacturing and assembly. (6) Operational use (water, plant maintenance). (7) End-of-life recovery (transport to recycler/composter).
Manufacturing phase emissions (embodied carbon): ~8.2 kilograms of CO2 equivalent per Thermopod unit. Largest contributor: kiln firing of terracotta (thermal energy, approximately 3.5 kilograms CO2e). Secondary: electronics manufacturing (approximately 1.8 kilograms CO2e). Growing medium and steel contribute approximately 1.5 kilograms CO2e combined. Transport is negligible (Thermopods are manufactured in India, short supply chains, 0.4 kilograms CO2e).
Operational phase: negligible emissions. Water use is <1,500 litres per year per unit (roughly 4 litres per day), minimal processing. Maintenance is manual (no electricity). Cooling is from photosynthesis, not fossil fuels.
Benefit phase (the cooling that displaces mechanical HVAC): A Thermopod unit with 3 areca palms produces approximately 3 kilowatt-hours per day of evapotranspiration cooling. Over a 200-day thermal season (March to October, assuming 5 days per week operation), this equals 600 kilowatt-hours per year of cooling displaced from mechanical systems.
Electricity grid CO2 intensity in India (2024-2026) is approximately 0.65 kilograms CO2e per kilowatt-hour. Therefore, annual carbon offset from mechanical HVAC displacement: 600 kWh × 0.65 kgCO2e/kWh = 390 kilograms CO2e per year, approximately 0.39 metric tonnes per unit.
At full deployment scale (1,000 Thermopods across a corporate campus), the annual carbon offset is 390 metric tonnes CO2e. Manufacturing embodied carbon for 1,000 units is 8,200 kilograms CO2e, or 8.2 metric tonnes. Payback period: 8.2 metric tonnes / 0.39 metric tonnes per unit per year = 21 years for manufacturing at 1,000-unit scale.
However, LCA includes end-of-life recovery. At 10 years, materials are fully recovered, and the same Thermopod can be remanufactured with minimal additional carbon (refurbishment is 30 percent of virgin manufacturing carbon). This enables 2 to 3 deployment cycles per physical unit. At 3 cycles, the manufacturing carbon is amortised, and the system operates carbon-negative from year 5 onward.
Simple interpretation: Thermopod embodied carbon is paid back through cooling benefit in approximately 4.7 days of operation (8.2 kg CO2e divided by 600 kWh/200 days = 1.74 kg per day, 8.2 divided by 1.74 = 4.7 days). After one week of cooling the space, the system has offset its own manufacturing carbon. Every subsequent day is climate benefit. Biothermal Microconditioning is carbon-negative within a week. Easy Retrofit. One day deployment. Carbon-positive by day 8.
ARTICLE
Life-cycle assessment (LCA) quantifies the environmental cost of manufacturing, transporting, using, and recovering a product. For a Thermopod unit, the LCA includes: (1) Terracotta vessel manufacture (kiln firing, transport). (2) Growing medium production (coconut coir processing, composting). (3) Areca palm propagation and transport. (4) Steel frame manufacturing and coating. (5) Electronics manufacturing and assembly. (6) Operational use (water, plant maintenance). (7) End-of-life recovery (transport to recycler/composter).
Manufacturing phase emissions (embodied carbon): ~8.2 kilograms of CO2 equivalent per Thermopod unit. Largest contributor: kiln firing of terracotta (thermal energy, approximately 3.5 kilograms CO2e). Secondary: electronics manufacturing (approximately 1.8 kilograms CO2e). Growing medium and steel contribute approximately 1.5 kilograms CO2e combined. Transport is negligible (Thermopods are manufactured in India, short supply chains, 0.4 kilograms CO2e).
Operational phase: negligible emissions. Water use is <1,500 litres per year per unit (roughly 4 litres per day), minimal processing. Maintenance is manual (no electricity). Cooling is from photosynthesis, not fossil fuels.
Benefit phase (the cooling that displaces mechanical HVAC): A Thermopod unit with 3 areca palms produces approximately 3 kilowatt-hours per day of evapotranspiration cooling. Over a 200-day thermal season (March to October, assuming 5 days per week operation), this equals 600 kilowatt-hours per year of cooling displaced from mechanical systems.
Electricity grid CO2 intensity in India (2024-2026) is approximately 0.65 kilograms CO2e per kilowatt-hour. Therefore, annual carbon offset from mechanical HVAC displacement: 600 kWh × 0.65 kgCO2e/kWh = 390 kilograms CO2e per year, approximately 0.39 metric tonnes per unit.
At full deployment scale (1,000 Thermopods across a corporate campus), the annual carbon offset is 390 metric tonnes CO2e. Manufacturing embodied carbon for 1,000 units is 8,200 kilograms CO2e, or 8.2 metric tonnes. Payback period: 8.2 metric tonnes / 0.39 metric tonnes per unit per year = 21 years for manufacturing at 1,000-unit scale.
However, LCA includes end-of-life recovery. At 10 years, materials are fully recovered, and the same Thermopod can be remanufactured with minimal additional carbon (refurbishment is 30 percent of virgin manufacturing carbon). This enables 2 to 3 deployment cycles per physical unit. At 3 cycles, the manufacturing carbon is amortised, and the system operates carbon-negative from year 5 onward.
Simple interpretation: Thermopod embodied carbon is paid back through cooling benefit in approximately 4.7 days of operation (8.2 kg CO2e divided by 600 kWh/200 days = 1.74 kg per day, 8.2 divided by 1.74 = 4.7 days). After one week of cooling the space, the system has offset its own manufacturing carbon. Every subsequent day is climate benefit. Biothermal Microconditioning is carbon-negative within a week. Easy Retrofit. One day deployment. Carbon-positive by day 8.
