Jaco de Groot milks 240 cows organically with his parents in Kamerik.
All buildings are fitted with solar panels powering the farm and selling electricity to the national grid.
The farm is bordered by city limits and strict planning permission conditions apply.
Jaco uses some robotics on the farm but decided against robotic milking because some of his fields are too far for the cows to walk back on their own.
The herd is red Holstein, with some experimental cross-breeding.
Calving boxes and calf pens are bedded with straw.
But the cows' cubicles use dried manure scrapings, made on the farm with a solar-powered press extracting the water for use as bedding.