A diesel genset or PTO generator can deliver a lot of power and run as long as there is fuel. That is its strength. Its weaknesses are familiar: it has to be started, often by someone who has to get to it in a storm, there is a break in power while it starts, the fuel goes stale if it sits, and it needs servicing. It is noisy, and on many farms it gets started so rarely that it fails when needed.
PTO generators also tie up a tractor that might be needed elsewhere, often for feeding out or clearing slips in the very storm that caused the outage. Hooking it up and changing over the switchboard is a job for someone who knows how.
Stored hydrogen is made on the farm from water, using off-peak power, wind or micro-hydro, and kept at 30 bar or less for weeks without losing charge. There is no fuel to buy or cart. A LiFePO4 battery and UPS-mode inverter switch over instantly, so nothing resets. The fuel cell has no engine, so it is quiet and there are no oil changes. The by-product is water, which goes back into the loop.
How it works →
Diesel wins on raw power and energy density. The hydrogen system gives 15 kW continuous, which suits a house, dairy shed or workshop, but not frost fans, big pumps or heavy machinery. Round-trip efficiency is 30% or less, so hydrogen made from grid power is not cheaper energy. Where a farm needs large power for long periods, diesel or a bigger supply remains the answer. Where it needs reliable, instant, quiet backup within 15 kW, hydrogen is designed for that.
Not necessarily per unit of energy. Round-trip efficiency is 30% or less, so making hydrogen from grid power costs more than using the power directly. The benefits are no fuel runs, instant switch-over, quiet running and no engine to service.
Only for loads within 15 kW continuous. A large PTO unit running heavy irrigation or machinery is beyond one unit. A larger or multi-unit setup could be sized in the pilot, but for some loads diesel remains the better tool.
Not straight away. During a pilot, many farmers would keep the old generator as a second fallback. Once the hydrogen system has proven itself through a few outages, you can decide what to do.
Pilot installs go to people on this list first. Rural homes, farms and remote sites especially. No spam, no payment.