Reducing Scope 3 Emissions: Moving goods with Renewable Natural Gas (RNG)

Truck with X15N

Companies aiming to minimize their environmental impact are prioritizing Scope 3 emissions—those generated across their entire value chain, including suppliers, contractors and transportation. Often the largest share of a business’s carbon footprint, these emissions present significant challenges, particularly for industries like manufacturing, food production, retail and shipping. Renewable Natural Gas (RNG) is one promising solution, offering an effective way to cut transportation-related emissions and support sustainability goals.

Why do companies have Scope 3 Emissions?

Scope 3 emissions stem from indirect activities linked to a company’s operations but beyond its direct control. These include emissions from purchased goods, waste and third-party transportation.

For many industries, transportation is a major contributor to Scope 3 emissions. Whether it’s food producers shipping goods to retailers, manufacturers distributing products to customers, or grocery chains replenishing stores, all these activities contribute to their company’s carbon footprint.  Addressing these requires collaboration with suppliers, contractors and logistics partners committed to sustainability.

How RNG can support your customers sustainability goals

Renewable Natural Gas (RNG) offers a viable, scalable solution for reducing emissions in transportation. RNG is produced from methane emitted by decomposing organic waste, including food waste, animal manure, wastewater sludge, and agricultural by-products. Instead of allowing this methane to escape into the atmosphere as a potent greenhouse gas, RNG projects capture it, refine it and convert it into a renewable fuel.

Over the past five years, the use of RNG as a transportation fuel has grown by an impressive 92%. In fact, RNG has helped offset around 6.96 million tons of CO₂-equivalent emissions during the last five years – comparable to removing 784 million gallons of gasoline from use.

How shippers can lower Scope 3 Emissions with RNG

Shippers can lower Scope 3 emissions by transitioning fleets to natural gas vehicles that run on RNG or partnering with logistics providers that use it. Converting specific shipping lanes to RNG offers measurable emissions savings, with greater impact as more routes adopt the fuel. Each RNG-powered truck that replaces a diesel vehicle cuts emissions, delivering compounding benefits over time and supporting sustainability goals.

RNG can be applied across different sectors to reduce Scope 3 Emissions:

  • Manufacturers: Transportation of raw materials and finished products is a major contributor to Scope 3 emissions. By partnering with logistics providers using RNG-powered trucks, manufacturers can lower emissions in their supply chains. This is especially beneficial for industries with high shipping volumes and long-distance logistics.
  • Food Producers: Food producers often collaborate with suppliers and logistics providers that handle organic waste. By adopting RNG-powered vehicles, they can turn waste by-products into valuable resources while reducing emissions in transportation networks. For example, food companies can work with logistics partners to use RNG-powered trucks for moving goods from processing plants to distribution centers.
  • Retailers and Grocery Chains: Retailers and grocery chains face significant transportation emissions from their fleets. Switching to RNG-powered trucks or partnering with RNG-using suppliers can help them reduce their Scope 3 emissions. Additionally, integrating RNG into operations through waste conversion (e.g., unsold goods) creates a closed-loop system that supports broader sustainability goals.

Route Examples

The emissions reduction potential of incorporating RNG is significant. Take a fleet making 250 trips per year: between Los Angeles and Oakland, using fossil CNG could cut emissions by 11 metric tons, while switching to RNG from landfill gas could save 181 metric tons, and using dairy RNG could slash emissions by 1,794 metric tons.

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On a route between Syracuse and Memphis,  landfill RNG by 207 metric tons, and dairy RNG by 2,051 metric tons.

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Finally, for a route between Dallas and Atlanta, landfill RNG 230 metric tons, and dairy RNG an impressive 2,279 metric tons. On all three routes, the use of dairy gas RNG could reduce emissions by nearly 500%.

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Taking the next step in transportation sustainability

Renewable Natural Gas (RNG) is a powerful, scalable way to cut transportation emissions and accelerate your path to sustainability. If you want to further reduce your Scope 3 emissions, contact your preferred carrier or third-party logistics partner and ask if they have trucks equipped with natural gas engines, such as the Cummins X15N. Or contact your local energy provider or fuel company and ask if they supply RNG.   

Cummins Office Building

Cummins Inc.

Cummins, a global power technology leader, is a corporation of complementary business segments that design, manufacture, distribute and service a broad portfolio of power solutions. The company’s products range from internal combustion, electric and hybrid integrated power solutions and components including filtration, aftertreatment, turbochargers, fuel systems, controls systems, air handling systems, automated transmissions, electric power generation systems, microgrid controls, batteries, electrolyzers and fuel cell products.

Cummins Custompaks are being used for water management as Thailand struggles with its water crisis

CustomPak on site

Water crisis

Sixty Cummins Inc. CustomPaks are in service in Thailand as part of a critical water management plan aimed at easing the country’s water crisis – a crisis that has caused enormous economic and social damage and stirred conflict among communities.

Over the past several decades, Thailand has continually faced water problems caused by severe drought. Water reserves in dams and reservoirs are insufficient while water resources are often contaminated with toxins caused by urban communities and the industrial and agricultural sectors.

Severe flooding is a threat, too, at a time when the realities of climate change are hanging over the country.

As a result, the allocation of precious water resources, which must be shared among various stakeholders including new and existing industry, large and small agriculture, and cities and villages has become a flashpoint.

Kittithanapat Engineering Co. (KTP), has been involved in the water management system since 1996, working closely with authorities such as the Royal Irrigation Department, Department of Water Resources, Bangkok Metropolitan Authority and others.

CustomPaks on site

600 hp CustomPaks

To help KTP meet its often urgent requirements, Cummins DKSH (Thailand) has recently supplied 60 Australian-built CustomPaks – 45 powered by Cummins’ X15 engine rated at 600 hp, and 15 powered by the QSL9 rated at 325 hp. These fully self-contained powerpacks are emissions certified to Tier 3.

The CustomPaks are coupled to hydraulically-driven, large-volume submersible water pumps sourced by KTP from US company Moving Water Industries (MWI); KTP is the exclusive distributor in Thailand for these MWI Hydroflo pumps.

Prior to Cummins’ involvement, KTP was using another diesel engine brand but service support wasn’t up to the standard required.

Long-serving KTP engineer Kittisak Thanasoot says Cummins DKSH’s reputation for technical and aftersales support along with the reliability of the Cummins product were a key reason behind KTP’s decision to specify the CustomPaks for the Royal Irrigation Department.

The ability of Cummins DKSH to respond to short delivery times was also important.

“Supplying large quantities of high horsepower diesel engines for emergency situations such as flash flooding can be a challenge for KTP,” says Kittisak Thanasoot.

“Responding to the needs of the government agencies to manage such problems in a timely manner and with least impact on communities, KTP has found the answer in our partnership with Cummins DKSH.”

Power, pride and passion

Parked semi truck

The switch back to Cummins power has been beneficial for iconic New Zealand company Uhlenberg Haulage. It's all about whole-of-life costs.

Uhlenberg Haulage is closing in on 60 years in business, having been founded in 1966 by Mike and Carol Uhlenberg.

Based in Eltham, Taranaki, in New Zealand’s North Island, the operation is today owned and operated by their sons Chris, Daryl and Tony Uhlenberg.

Describing the Uhlenbergs as “old school family truckies”, Daryl talks about the company’s time-honored journey with a definite tone of pride, especially the work of his parents in laying the foundations for what is today an iconic fleet in its own right.

Cummins Inc. made its debut in the Uhlenberg fleet in 1971 with an NH250 powering a second-hand Kenworth K923 used in logging. A second Kenworth, a new W924 with a Cummins NTC335, followed soon after hauling an LPG tanker.

The Uhlenberg operation today comprises 40 prime movers and a variety of trailing gear to cater for the myriad of a jobs the fleet is involved in.

A number of Peterbilts feature in the fleet although Kenworth is now the brand of choice with six new units to be delivered over the next 12 months to cater for business growth.

Cummins’ X15 Euro 5 engine rated at 550 or 600 hp is the preferred power specification, with 18 red engines currently in the fleet.

Uhlenberg family in front of truck

Whole-of-life support

“The switch to Cummins has been a very good experience for us. We have nothing but praise for the Cummins organization,” says Daryl.

“The whole-of-life picture is the key thing for us and we’ve got that nailed with the support we get from Cummins – parts availability, scheduled maintenance, life expectancy and in-frame rebuilds.

“So the red engines turn up, we run them to life, which is 900,000 to 1.2 million kilometers, and then Cummins does an in-frame overhaul in a timely manner. If there’s an issue, parts and support are close by.

“The support we get from Cummins Palmerston North is fantastic, second to none.”

Daryl recently looked under a Kenworth that was in the workshop for a service and was surprised to see no oil leaking from the one-million-kilometer X15. “I remember when I was a fitter we had to wear a raincoat when working under a truck,” he jokes.

Fuel agnostic

Acknowledging that the push to decarbonize is now “very real”, Daryl likes the idea of Cummins’ fuel agnostic concept where one base internal combustion engine, optimized to run on diesel, can also be customized to run on ultra-low and zero-carbon fuels like renewable natural gas and hydrogen.

“My father was a pioneer of linehaul trucking in New Zealand and he always embraced new technology. He was never scared of it,” he says.

“I tend to be a little more cautious but I can see where a 500 hp natural gas or hydrogen engine would work for us in short haul applications,” he admits. “We’re certainly willing to look closely at these alternative fuel technologies when suitable infrastructure is in place.”

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