Water level measurement and rain measurement

Wairarapa, New Zealand

Fuel cell: EFOY Pro 800 Duo, Solution: Weatherproof enclosure

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General information about your application:

Greater Wellington Regional Council’s (GWRC) hydrology team maintains a flood warning network throughout the Wellington Region. Due to the remoteness of some of the sites we rely heavily on solar energy as our primary power source. Two of our sites, the Waiohine River and the Mangatarere River both have difficulty using Solar energy.

Which energy problems or challenges did you have to address?

Both sites run an HS-40 bubbler unit, a radio and a logger. The bubbler draws up to 30 Amps once every 18 hours for 16 seconds and the radio draws up to 7 Amps for several seconds every 15 to 30 minutes. The rest of the time it is in idle mode 50 mAmps. There is also a minimal draw from the logger (150 FX Datalogger) 1-0.5mAMP5. Solar wasn‘t enough for our Mangatarere Site, in the winter and we used a thermoelectric generator (TEG) to supplement the site. At the Waiohine site we only used the thermoelectric generators.

Why did you select EFOY Pro?

In the past we’ve used TEGs, which have been very effective as an alternative power source. Although effective the thermoelectric generator has aging technology and has proven difficult for servicing in New Zealand. Having researched the alternatives, the EFOY has been a viable alternative.

The solution:
EFOY Pro 800 Duo

Two EFOY Pro 800 fuel cells are in use, one at each site. The are installed in a small waterproof shelter.

more about EFOY Pro 800 Duo

“EFOY saves time and money”

We have a reliable energy supply to our site. We don’t have to replace heavy gas bottles any more, which has been a saving in both time and money. Due to the EFOY’s compact nature we have been able to secure them within the recorder hut. The EFOY’s have proven very efficient, reliable and fits our purpose well.

Braden Crocker, Technician at the Greater Wellington Regional Council, NZ

How is the EFOY Pro integrated in your installation?

The EFOYs are installed in a recorder hut and connects directly to the battery in the place of a standard charger or a TEG. Two EFOY Pro 800 fuel cells are in use, one at each site. The are installed in a small waterproof shelter.

What are the benefits of using the EFOY in your application?

We have a reliable energy supply to our site. We don’t have to replace heavy gas bottles any more, which has been a saving in both time and money. Due to the EFOY’s compact nature we have been able to secure them within the recorder hut. The EFOY’s have proven very efficient, reliable and fits our purpose well.

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