OFF HIGHWAY: Real-world emissions measurement of non-road mobile machinery (NRMM), power-generation, rail and marine.
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“As we scale up our emissions testing on our ammonia-to-power powerpack, Emissions Analytics was always available to provide timely, detailed, and accurate information. Our systems are novel and require much testing and refinement. We’ve been impressed with their diligence and commitment to excellence throughout every stage of the process.”
Amogy, Inc.
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‘Emissions Analytics carried out emissions testing on diesel generators coupled to our flywheel hybrid system. They took over the work at very short notice and showed great competence and professionalism in all stages of the project. Despite the novelty and peculiarities of our test requirements, their team showed great adaptability, attention to detail and provided excellent communication at all times.’
Punch Flybrid
NRMM operates in the most unpredictable conditions of all
Unlike on-road vehicles, NRMM lives its life in a world of shifting loads, rough terrain, stop-start operation, extreme temperatures and inconsistent duty cycles. Engines here work hard, heat unevenly and spike unexpectedly. These conditions create emissions behaviours that simply can’t be replicated in a laboratory.
Our PEMS programmes capture second-by-second emissions performance as machinery operates in real fields, quarries, pits, farms, tunnels and work sites. This gives manufacturers, regulators and operators a clear, independent understanding of how their machines behave in practice.
It’s the closest you can get to a genuine operational snapshot.
Why real-world testing matters for off-highway machinery
Non-road engines are incredibly sensitive to real operational conditions. Small changes in terrain, load, operator style or duty duration can shift NOx, CO₂ and PN dramatically.
Real-world NRMM PEMS testing helps you:
Meet Stage V In-Service Monitoring (ISM) requirements
Understand high-load emissions events and thermal instability
Validate new calibrations or hardware updates
Benchmark across generations and competitor platforms
Quantify ageing or deterioration under field conditions
Support warranty, durability and regulatory evidence
Verify retrofit or aftermarket system effectiveness
The data often reveals insights no dyno or stationary test could uncover.
Why choose Emissions Analytics for non-road vehicle emissions testing?
Project management
Liaison with the end user to arrange the tests and ensure customer satisfaction is maintained
Mobility
Working globally via bases in the UK, Germany and USA
Flexibility
Working around operators’ working hours
Experience
Experience across various applications from small all-terrain vehicles to inland waterway vessels
Cost effectiveness
Removing the internal burden to free up skilled staff for core projects, through outsourcing
Off-Highway projects
Stage V In-Service Monitoring (ISM): Complete support for ISM programmes, capturing real-use performance across diverse conditions and loads.
Power generation & fixed machinery: Dynamic load testing for generators and industrial engines
Hybrid, electrified and alternative fuels: Understanding how non-road hybrid systems, renewable fuels perform in real-world conditions.
Retrofit accreditation and benchmarking: On behalf of government bodies or technology specialists, independent proof of concept
Testing where your machinery works:
Forests and fields
Construction sites
Quarries and open-pit mines
Municipal works
Industrial plants
Rail
Rivers
Hard-to-reach regions in Asia, South America, North America, Europe, Australia and beyond
Your machinery operates there - we test there.
Testing in the environments your machinery actually works in
We deploy equipment wherever real insight is needed:
Agricultural fields
Construction sites
Quarries and open-pit mines
Municipal works
Industrial plants
Hard-to-reach regions in Asia, South America, North America, Europe, Australia and beyond
If your machinery operates there, we can test there.
Who we work with
Our independent data helps stakeholders understand risk, optimise performance, and make strong, evidence-based decisions.
Agricultural, construction and mining OEMs
Tier 1 and Tier 2 suppliers
Rental and operational fleets
Regulatory bodies and compliance teams
Retrofit and aftermarket technology providers
Our non-road machinery tailpipe emissions testing approach
Emissions Analytics use Portable Emissions Measurement Systems (PEMS) to collect real-world emissions data directly from non-road mobile machinery, including:
Mining and construction equipment: excavators, bulldozers, wheel loaders, haul trucks, generators, rock crushers
Agricultural machinery: tractors, harvesters, sprayers, woodchippers
Upcoming conferences
Ready to scope your Off-Highway machinery programme?
Talk to our team to map out the right machinery, routes and operational conditions for accurate, representative testing.