Carbon Inventorying
Carbon Emissions Inventory Calculator
Fugitive Emissions (Scope 1)
Fugitive emissions result from unintentional leaks of potent greenhouse gases, primarily refrigerants, in cooling systems. For example, a hotel’s air conditioning unit (R-410A) may leak during operation, or a supermarket’s refrigeration system (R-134a) may release refrigerant during maintenance. Enter the refrigerant type and annual leakage amount in kilograms (kg) from service records, or use the square footage of air-conditioned spaces for an estimate. This helps quantify the environmental impact of refrigerant leaks, which have high global warming potential.
Stationary Emissions (Scope 1)
Stationary emissions come from burning fuels in fixed equipment like boilers, furnaces, or generators at your facility. For instance, a school might use natural gas to heat classrooms, or a factory might rely on biodiesel for a backup generator. Enter the fuel type and annual usage (gallons for most fuels, cubic feet for Natural Gas) from utility bills or delivery records. This captures direct emissions from on-site fuel combustion, critical for understanding your operational footprint.
Mobile Emissions (Scope 1)
Mobile emissions arise from fuels burned in company-owned vehicles or mobile equipment, such as delivery trucks, boats, or inter-island aircraft. Examples include biodiesel for a catering company’s van, jet fuel for a tourism operator’s plane, or gasoline for a landscaping firm’s truck. Enter the fuel type and annual usage in gallons (except for Natural Gas), sourced from fuel receipts or fleet logs. Tracking these emissions highlights the impact of transportation and equipment in your operations.
Purchased Electricity (Scope 2)
Purchased electricity emissions stem from grid electricity used for lighting, equipment, or other operations. For example, a retail store powers its lights and HVAC with electricity, or a warehouse runs conveyor belts. Enter annual kWh from utility bills or dollars spent (converted to kWh using Hawaii’s $0.375/kWh rate) for each building. Use “Add Another Building” for multiple facilities, ensuring accurate accounting of electricity-related emissions.
Emissions by Sector
| Sector | Emissions (metric tons CO₂e) |
|---|---|
| Fugitive | 0.00 |
| Stationary | 0.00 |
| Mobile | 0.00 |
| Electricity | 0.00 |
| Total | 0.00 |