Most calf sheds draw modest power: a milk warmer or hot water cylinder for mixing powder, a pump for the calfeteria or milk taxi, a wash-down unit for teats and buckets, heat lamps over the sick pen, and lights for the late check. None of it is huge. All of it matters when you have dozens of calves expecting a feed twice a day.
The trouble is that spring southerlies bring lines down right when the shed is fullest, and a calf that misses a feed or chills overnight goes backwards quickly. Rearers know the cost of a bad week in spring shows up for months afterwards in growth rates.
The electrolyser runs on cheap off-peak power overnight, or from a farm wind turbine or micro-hydro if you have one, and fills a low-pressure hydrogen buffer at 30 bar or less. A fuel cell turns that back into electricity when the grid drops, and a LiFePO4 battery with a UPS-mode inverter makes the switch instantly, so the milk taxi pump keeps running mid-fill.
How it works →
A small generator works until it does not start on a wet morning, or until someone has to fetch fuel in a storm. A hydrogen system has no engine and no fuel runs, and it is quiet enough to sit near a shed full of nervous calves. The trade-off is efficiency: round-trip is 30% or less, so it is backup and resilience, not a cheap way to heat milk every day.
Heat lamps are a steady, predictable load and sit well within 15 kW. How many hours you get depends on how much hydrogen is stored, which is sized in the pilot. Keeping calves warm through an outage is exactly the kind of job it is designed for.
The 15 kW output is enough for an average home with headroom, so a shed and house on one supply is possible if the combined load fits. If both run heavy loads together, the pilot would look at whether a larger or multi-unit setup is needed.
Yes, it splits filtered, de-ionised water, about 9 litres per kg of hydrogen. Most of that comes back from the fuel cell and returns to the loop, so the top-up is small. A farm supply with filtering is normally fine.
Pilot installs go to people on this list first. Rural homes, farms and remote sites especially. No spam, no payment.