Mackwell Engines


The diesel problem…

Farming shouldn’t harm the environment, the farmer, or the farm, yet on average, farming consumes 47 litres of diesel per hectare.

Diesel engines fill the atmosphere with harmful particulates and CO2 emissions while price volatility impacts farming viability.

Farmers need tractors to supply our food. What can be done to make tractors resilient?

“This last harvest … our fuel costs were over double what they were the previous harvest.”

David Clark, Arable Farmer, Canterbury NZ – April 2022

What can we do?

For the first time ever, there is a viable alternative that can match a diesel tractor on both performance and cost.

Mackwell engines are powered by solid biofuel (wood and crop residue). A typical farm need only put around 2% of its land area to produce enough solid biofuel to meet the needs of its Mackwell indefinitely.

In a Mackwell A150 engine, 500kg of wood-chip provides 4 hours of run time at an average 48% load. 350kg of chip provides enough energy to crop one hectare, seed to harvest.

Resilient machinery is the future.

Our complete combustion firebox emits zero smoke or sparks. This is crucial for farming in arid regions with a high fire risk.

The Mackwell is fundamentally explosion proof, reaches full pressure in ten minutes and matches the power to weight ratio of a modern diesel.

Woodchip is a high energy return on investment fuel. Biophysical profitablity leads to economic profitability.

So… what can be done?

Begin planting biomass crops today to prepare for your zero-carbon traction future.

The best time to plant a tree was 20 years ago. The second best time is now.

– Chinese Proverb