The invisible work environment around mobile power.

Up to 250x higher particulate emissions than permitted limits.

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A service vehicle often does more than transport people and tools. It can also provide the power needed to get the job done.

When that power comes from a fossil generator or an engine-driven PTO, emissions are produced right where the work takes place — often close to the people doing it.

Together with Kåre Press-Kristensen and the Danish Technological Institute, we set out to understand what that means for the working environment.

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We measured particle emissions from a petrol generator and a diesel generator when used as a source of power.

The aim was to put numbers on something that is otherwise difficult to see: the particles released into the immediate working environment.

The measurements gave us a clearer picture of what workers can be exposed to when power is produced close to where they work.

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“The ideal solution is electric power.”

Kåre Press-Kristensen

Generator exhaust contains gases and particles.

According to Kåre Press-Kristensen, exhaust from petrol and diesel generators contains harmful gases as well as particles of different sizes.

Larger particles tend to deposit in the airways, while the smallest, ultrafine particles can reach deep into the lungs. This makes emissions relevant to consider when combustion takes place close to where people are working.

Because ultrafine particles cannot simply be seen, measuring them gives us a better understanding of the exposure around the equipment.

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The petrol generator produced around five times as many ultrafine particles.

The Danish Technological Institute measured ultrafine particle emissions from both generators. Both produced ultrafine particles. But the difference between them was surprising.

In this particular test, the petrol generator produced around five times as many ultrafine particles as the diesel generator tested.

“I did not expect the petrol generator to produce around five times as many.”

Søren Hanghøj Møller, Danish Technological Institute.

The measurement relates to the specific generators and test conditions, so it should not be seen as a general comparison between all petrol and diesel generators.

Instead, it highlights something useful: actual emissions may not always match our assumptions.

Full report from Danish Technological Institute

Particulate emissions from generators
avoided by Kemp & Lauritzen.

250x higher particulate emissions than permitted limits.

In Kemp & Lauritzen's district heating division, 22 vehicles head out daily to jobs demanding serious power. Until now, the division has relied on petrol and diesel generators — but seven battery-powered energy systems are now in operation, and they're already making a noticeable difference to everyday work.

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The van is more than a vehicle.

For technicians and service professionals, the van often becomes a mobile workplace.

People work in and around it. Tools need power. Equipment needs charging. And energy needs to be available wherever the next job happens to be.

For fleet managers, this means there is a wider perspective to consider when designing the energy setup.

Capacity, runtime, reliability and cost remain important. But the way energy is produced – and what happens around the vehicle while it is being produced – should be part of the equation too.

Electric power removes generator emissions at the point of use.

Traditionally, a generator has been a straightforward way of getting electrical power where the grid is unavailable.

Today, energy can also be stored onboard the vehicle and used to power tools and equipment when needed.

That changes one important part of the mobile workplace: electrical power no longer has to be produced through combustion next to the people doing the work.

For fleet managers, this opens up a different way of thinking about mobile energy. Not simply which power source to choose, but how the complete energy system can best support the work.

How much energy is actually needed?

When is it needed?

Which equipment needs to run?

And how can that power be supplied reliably throughout the working day?

At least, this is how we approach mobile energy: as a system designed around the operation and the people relying on it. The particle measurements add another useful perspective to that conversation.

“The ideal solution is electric power.”

Kåre Press-Kristensen

Watch the film

Proof in the field

Real examples of how mobile teams use Clayton Power to support reliable operation, reduce generator dependency, and make service vehicles more capable in daily work.