| 1 |
High electricity demand |
Lighting, conveyors, automated storage systems, ventilation, heating and cooling. |
20–60 kWh/m²/year for many ambient warehouses; refrigerated facilities can reach approximately 200–1,000 kWh/m²/year. |
Higher electricity consumption increases indirect greenhouse-gas emissions, especially where power generation is fossil-fuel intensive. |
Install sub-metering, LED lighting, occupancy controls, efficient motors and on-site solar where feasible. |
Indicative building-energy benchmarks; actual performance varies with climate, operating hours, automation and storage temperature. |
| 2 |
Lighting-related energy use |
Illumination of aisles, loading docks, picking areas and exterior yards. |
Lighting commonly represents about 15–30% of electricity use in non-refrigerated warehouse operations. |
Uncontrolled lighting adds electricity demand and internal heat, which can increase cooling loads. |
Use LED fixtures, daylight harvesting, occupancy sensors and zoned controls. |
Warehouse energy-efficiency guidance from the U.S. Department of Energy and ENERGY STAR programs. |
| 3 |
Refrigeration and refrigerant emissions |
Cold storage, frozen storage, compressors, evaporators and temperature-control equipment. |
Refrigeration can account for roughly 40–60% of electricity demand in temperature-controlled warehouses; refrigerant leakage can have a high global-warming impact. |
Electricity use rises substantially, while leakage of high-global-warming-potential refrigerants adds direct emissions. |
Maintain seals and compressors, detect leaks, improve insulation and transition to lower-impact refrigerants. |
Cold-chain energy and refrigerant-management guidance from the Carbon Trust, UNEP and national environmental agencies. |
| 4 |
Carbon emissions from purchased electricity |
Grid electricity used for warehouse operations and material-handling equipment. |
A planning factor of approximately 0.4–0.6 kg CO₂e per kWh represents a broad global electricity-generation range; local grid factors differ considerably. |
A warehouse using 1,000,000 kWh/year may be associated with approximately 400–600 metric tonnes of CO₂e/year before renewable-energy adjustments. |
Reduce consumption first, then procure verified renewable electricity or generate renewable power on-site. |
International Energy Agency electricity-emissions intensity ranges; site-specific national or regional factors should be used for reporting. |
| 5 |
Water consumption |
Restrooms, handwashing, cleaning, landscaping and cooling systems. |
A basic operational planning range is approximately 5–15 litres per employee per shift, excluding process water and evaporative cooling. |
Water demand contributes to local freshwater stress and creates wastewater-treatment requirements. |
Install low-flow fixtures, repair leaks, reuse rainwater where permitted and monitor water by building zone. |
Facility water-planning benchmarks based on workplace sanitation demand; local codes and climate conditions should be applied. |
| 6 |
Packaging material demand and waste |
Receiving, order picking, repacking, protective packaging and dispatch. |
Paper and paperboard represented approximately 68% recycling by weight in the United States in 2018; actual warehouse recovery depends on contamination and local collection systems. |
Virgin fiber, plastics, inks and adhesives require raw materials and energy; discarded packaging increases landfill volume. |
Right-size cartons, eliminate unnecessary void fill, use reusable totes and separate clean cardboard and plastics. |
U.S. Environmental Protection Agency national paper and paperboard recycling statistics, 2018. |
| 7 |
Land use, traffic and local air pollution |
Warehouse construction, truck access, loading yards, employee commuting and delivery activity. |
Road transport produces approximately 23% of global energy-related CO₂ emissions from transport; freight activity is a major contributor to this total. |
Land conversion can reduce habitat and increase stormwater runoff, while trucks contribute CO₂, nitrogen oxides, particulate matter and noise. |
Prioritize infill sites, add permeable surfaces and vegetation, consolidate loads, optimize routes and use low-emission vehicles. |
International Energy Agency transport-emissions analysis and established urban land-use impacts of freight facilities. |