Joe Calhoun Achieve a cleaner, low-carbon operation with propane
Forklifts are essential for any warehouse, distribution center, or production facility, and choosing the right energy source for forklifts has an immediate impact on operations and a lasting repercussions on the environment.
Supply chains contribute significantly to a company’s carbon footprint. In fact, the carbon emissions in supply chains are, on average, four times those of a company’s direct operations. Forklift fleets are often the workhorse of these operations, and using propane-powered forklifts creates an opportunity for warehouses and distribution centers to significantly improve their carbon footprint.
Propane equipment ensures sustainable, low-carbon operation
Propane is a clean, low-carbon alternative energy source. According to the Propane Education & Research Council (PERC) when propane is used to power forklifts, sulfur oxide (SOx) emissions are reduced by 76 percent compared with electric grid emissions that power battery-operated equipment. Nitrogen oxide (NOx) and hydrocarbon emissions are reduced by 94 percent compared with diesel models.
A research paper published by PERC, Fork(lifts) in the (Off) Road: Should We Ban Internal Combustion Engines for Electric? compares the lifecycle emissions profiles of propane and electric forklifts. Findings show that in most states, propane forklifts are the cleaner option compared with electric forklifts, especially when considering marginal electric grid emissions. The case for internal combustion engine (ICE) forklifts becomes even stronger with hybrids and renewable fuels. In fact, nearly all propane ICE forklift technologies emit extremely low criteria pollutants compared to the regulatory standards.
The analysis used available engine certification emissions data published by the Environmental Protection Agency (EPA). The study presented the following scientific findings:
- A true zero-emissions forklift does not exist.
- Hybrid electric forklifts, when paired with both conventional and renewable fuels, emit less CO2 than battery-electric forklifts in well-to-wheel emissions.
- For most states, NOx emissions from propane-powered forklift engines can be less than half that of battery-electric forklifts powered by the electric grid.
- 314,000 ICE forklifts are operating in California alone. Replacing all ICE forklifts in the state with battery-electric forklifts would require nearly 10 GWh/day of additional charging capacity.
This is important as forklift managers across the US work to navigate new emissions requirements for Class 4 and Class 5 forklifts. The California Air Resources Board (CARB) is pursuing a ban on all equipment that uses diesel, propane, natural gas, and gasoline—and mandating the use of battery electric and hydrogen fuel cell electric forklifts only.
Propane’s edge over electric comes down to electric’s full-fuel-cycle emissions including those produced in the manufacturing, transportation, and disposal of electric forklift batteries, as well as the generation and distribution of electricity.
Propane’s low-emissions profile allows the equipment to safely operate indoors (in properly ventilated environments) and outdoors. In fact, well-maintained propane forklifts meet or exceed nationwide indoor air quality standards.
When selecting a forklift energy source, companies making the choice between electric and propane-powered equipment often rely on the fact that electric equipment produces zero emissions during operation but tends to overlook its full emissions profile, which includes well-to-wheel emissions. Propane produces significantly fewer lifecycle emissions than both diesel and electric and is the best choice for businesses interested in reducing their carbon footprint.
Going green doesn’t have to break the budget
Many companies that are looking to reduce emissions have noticed that it can sometimes come with a higher price tag. With propane forklifts, companies can reduce emissions more cost-effectively than other energy sources.
Propane forklifts offer cost savings throughout ownership. The capital costs of propane-powered forklifts can be up to 30 percent lower than those for electric when factoring in the equipment needed for battery recharging. Propane helps avoid these extra expenses, saving money for other line items like new employees, additional training, or business development, to name a few. Businesses operating on propane may also be able to lock in a mutually beneficial fuel contract with their local propane supplier for more savings and financial peace of mind.
While the duty cycle of forklift applications varies, one propane cylinder will power a forklift for an entire eight-hour shift. An equivalent battery-electric lift often does not last a full eight hours of continuous use. Propane forklifts are also 90 percent efficient versus electric forklifts which are about 25-30 percent efficient from generation to distribution.
Material handling professionals continue to choose propane as the best power source. Propane forklifts’ ability to work around the clock and reduce emissions, while keeping costs in check, are just a few reasons that business owners count on them to get the job done.
Read the full Fork(lifts) in the (Off) Road: Should We Ban Internal Combustion Engines for Electric? report at Propane.com/Forklifts, and discover additional propane forklift benefits.
About the Author:
Joe Calhoun is the director of off-road business development for the Propane Education & Research Council. He can be reached at [email protected]
