Large off grid solar project goes live in Twizel, NZ.
In an isolated forest close to Lake Pukaki there is a large log house. Up to to this stage the owners had to rely on a 12 kva diesel generator that was loud and polluting and required a lot of maintenance and diesel fuel.
To get mains power to the site would require a cable kilometres long at an expense of some $120,000. Green Spark Solar was invited to give an assessment and was able to take the lodge fully off grid using 10.6kw of solar panels with German built SMA inverters and Nanocarbon batteries; for a fraction of this price.
The installation was typically challenging. The soil was glacial morraine and had large boulders immediately under the surface. Some of the heaviest rains in living memory took place during the installation. The permafost melted, the roads dissolved and a considerable amount of time was spent just keeping the site accessable.
Steel beams were set deep in the earth to mount the array; about double the normal amount due to high wind speeds, earthquakes and snow loads.