H2OME

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Power for the shack at the end of the track

River mouth fishing shacks, high country cabins and lakeside huts are built for getting away. Power there usually means a noisy generator, a smoky fire and a lot of jerry cans.

The jerry can routine

Most remote shacks run on a small generator and a car battery or two. Every trip starts with fuel cans in the ute, ends with a drained battery, and involves someone deciding whether the freezer is worth the noise overnight. On a calm evening at a river mouth the generator is the loudest thing for miles, and it is the thing people came to get away from.

What it would keep running

  • Bait and fish freezer
  • Lights and a water pump
  • Fridge and kettle
  • Phone and radio charging

Charging where the grid never reached

Many shack sites have steady wind off the water or a creek with enough fall for micro-hydro. The system is designed to charge from either, store the energy as hydrogen at 30 bar or less, and hold it for weeks without losing charge. Arrive after a month away and the store is still full, the battery is ready and the lights come on with no cord to pull.

Round-trip efficiency is 30% or less, so the turbine or hydro has to make a good deal more than the shack uses. That is a real sizing question for a small site, not a detail. The pilot would look at your wind or flow before anything else is decided.

How it works →
The H2OME loop: an electrolyser splits water into hydrogen, the hydrogen is stored in a tank for weeks, a fuel cell turns it into electricity for your home, and the water returns to the loop.

Is it the right size?

Honestly, a 15 kW whole-home system is more than a two-room shack with a few lights and a freezer needs. It fits better at a bigger family cabin used for long stretches, a shared site with several huts, or a shack that is becoming a permanent home. Shack owners who just want lights for a weekend are probably better served by something much smaller, and the pilot would say so.

Questions

Is it worth it for a small weekend shack?

Probably not. It is designed for an average home at 15 kW continuous, which is more than a two-room shack needs. It suits bigger cabins, shared sites or shacks used for long stretches, and the pilot would be honest about fit.

Can it run with no grid connection at all?

Yes, it is designed to charge from a wind turbine or micro-hydro. Because round-trip efficiency is 30% or less, the source needs to produce a good deal more energy than the shack uses over a year.

Will the hydrogen still be there after a month away?

Hydrogen keeps for weeks in the low-pressure store without losing charge, which is one of the main reasons it suits places that sit empty between visits. Leak sensors, automatic shutdown and venting are part of the design.

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