Regulatory pressure on fleet emissions reporting is growing worldwide, and trucking carriers are now being asked to measure and disclose their carbon footprint in ways that were unheard of just a few years ago. While large corporations and shippers have already incorporated carbon accounting into their sustainability strategies, the burden is increasingly shifting down the supply chain to transport operators—many of whom lack the resources or expertise to comply.
That’s where GreenIRR comes in. Founder and CEO Celine King launched the company to help mid-market and enterprise trucking fleets automate emissions calculations and generate regulation-compliant reports—eliminating the need for manual data collection, complex spreadsheets, and time-consuming calculations.
At Geotab Connect 2025, I spoke with Celine King to understand how GreenIRR is reshaping carbon reporting for trucking fleets, why fleet operators need to start preparing now, and the key challenges facing the industry.
Why Trucking Fleets Are Under Growing Pressure to Report Emissions
Global carbon regulations are evolving rapidly, and trucking fleets are caught in the middle. The demand for Scope 3 emissions reporting—which requires companies to track the environmental impact of their entire supply chain—means that many large corporations are now forcing transport providers to disclose their emissions data or risk losing contracts.
“It’s not necessarily direct pressure on the trucking industry—unless you’re a publicly traded company,” says King. “But it’s more so pressure on your customers, and those customers won’t do business with you unless you can report your emissions.”
In the United States, three key regulations are driving the push for carbon reporting:
- California SB 253 – Requires all companies with over $1 billion in revenue to report Scope 1, Scope 2, and Scope 3 emissions.
- SEC Federal Regulation – Mandates Scope 1 and Scope 2 reporting for publicly traded companies.
- EU’s Corporate Sustainability Reporting Directive (CSRD) – Affects an estimated 10,000 US companies with European subsidiaries.
Similarly, in Australia, the government has introduced stricter Scope 3 reporting requirements, which have pushed the responsibility down the supply chain—forcing fleet operators to comply if they want to continue servicing large corporate customers.
“The supply chain is where most emissions occur, and large organisations are now requiring transport providers to account for their environmental impact,” King explains. “For many fleets, the challenge isn’t just measuring emissions—it’s knowing how to report them correctly.”
Automating Carbon Accounting with GreenIRR
For most fleets, emissions tracking is a tedious and time-consuming process. Fleet managers who attempt to calculate their carbon footprint manually often rely on Excel spreadsheets—a method that can take over 25 hours per reportand is prone to human error.
GreenIRR’s cloud-based platform automates the entire process. By integrating with Geotab telematics and fuel card providers, GreenIRR automatically collects fuel consumption and vehicle usage data, applies standardised emission factors, and generates fully compliant carbon reports in seconds.
“If a company is doing this manually, it takes an average of 25 hours per report,” says King. “With GreenIRR, it’s a five-second process—just push a button.”
How It Works
- Direct Integration with Fleet Telematics & Fuel Data – Pulls real-time vehicle data from Geotab and other providers.
- Automated Carbon Calculations – Converts fuel consumption into emissions using globally recognised GHG accounting standards.
- Regulatory Compliance – Ensures that reports meet requirements for California SB 253, the EU’s CSRD, and other frameworks.
- Seamless Reporting – Fleets can instantly generate reports for customers, regulators, or internal sustainability teams.
Challenges in Carbon Accounting for Trucking Fleets
Despite growing regulatory pressure, many trucking fleets are still unprepared for emissions reporting. According to King, three key challenges prevent fleets from fully embracing carbon accounting:
1. Lack of Internal Expertise
Most trucking companies do not have in-house sustainability teams. Fleet managers, who are already juggling compliance, maintenance, and driver management, often lack the training to calculate emissions properly—especially when dealing with different vehicle types, fuel sources, and alternative fuels.
“It’s not just a simple formula anymore,” King explains. “If you have a fleet using biodiesel, renewable diesel, or EVs, each has its own emission factor and reporting requirements. That’s where things get complicated.”
2. The Shift to Alternative Fuels Complicates Reporting
With the rise of biodiesel and renewable fuels, emissions calculations have become even more complex.
“Biodiesel adoption has increased tenfold in the US because it’s much more practical than electrifying long-haul trucking fleets,” King notes. “But any biogenic emissions must be reported separately, making compliance even harder for fleets without the right tools.”
Similarly, electric fleets must report their Scope 2 emissions—the indirect carbon footprint of their electricity use.
“A huge misconception is that EVs have zero emissions,” she says. “There are no tailpipe emissions, but fleets must still account for the emissions generated by the electricity they use for charging.”
3. Manual Reporting Is No Longer Enough
As regulations evolve, carbon reporting must be auditable and third-party verified—meaning that simple internal calculations are no longer enough.
“Regulations now require carbon reports to be assured by an external auditor,” King says. “Companies can’t just estimate their emissions and submit a spreadsheet. They need a system that ensures accuracy and compliance.”
Expanding into Global Markets
GreenIRR has gained rapid traction in the US trucking industry, but King sees major global opportunities.
“We haven’t entered Europe yet, but there’s a huge market there,” she explains. “With Geotab as an integration partner, it’s easier for us to expand into new markets like Australia, where fleets are facing similar regulatory challenges.”
Being listed on the Geotab Marketplace has also provided greater visibility for GreenIRR, helping the company reach fleets that need carbon accounting solutions.
“Geotab’s marketplace makes it easy for fleets to find solutions like ours,” she says. “If a company is feeling pressure to start reporting emissions, we’re there to help.”
Why Fleets Need to Act Now
Fleet emissions reporting is no longer optional—it’s becoming a business requirement. Whether driven by government regulations or corporate customer demands, trucking companies must start tracking their carbon footprint or risk losing business opportunities.
“At the end of the day, fleets need a system that makes emissions tracking effortless,” King says. “That’s exactly what we built GreenIRR to do.”
