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We've seen electric cherries and electric chickens. How about electric piggies? CJ and Tim Lepper run a pig farm in Taranaki and, like a growing number of clever rural folk, they realised that solar was a slam dunk for their business.
Working with FarmGen, it installed a 1.8 megawatt system at a cost of around $1.5 million and CJ says that investment could be paid off in as little as five years.
Solar can slash bills for farmers overnight because it allows them to avoid high grid electricity costs but, with plenty of space for bigger systems, export revenue can also be significant. For them, selling a year’s worth of energy to the market at normal prices could bring in $200-250,000 each year.
It’s not just the solar that’s smart, either. The Leppers also have a system to turn the manure from 3,500 pigs into fertiliser and biogas. The biogas is sent to a 40kW generator that heats water to keep the piglets warm and Tim says it takes care of around 30% of the electricity bill.
While biogas can make sense on some farms because there’s an opportunity to turn waste into revenue, it is not a viable substitute for the gas network as there’s so little of it available and it’s more expensive than standard gas.
When Mike Casey bought his house near Cromwell, it came with gas bottles on the side of the home for water and an expensive diesel system for the underfloor heating. He replaced both of them with a Steibel Eltron system and it's been saving him money ever since. As technical manager Bhawesh Singh told him at the Electrify Queenstown conference, there has been a big influx in enquiries from homes looking to get off the molecules and onto electrons.
Read moreDownloadConfidence that cutting regulations to make solar power more accessible - won't jeopardise people's safety. A new Regulation Ministry reports laid out a potential blueprint to legalise plug-in solar and reduce the time and cost of panel installation. Rewiring Aotearoa CEO Mike Casey shares his thoughts with Andrew Dickens.
The burgeoning demand for solar was also a chance to address a mismatch between the numbers of training opportunities available and young people searching for work, Casey said. "The mums of New Zealand are telling me that there's not enough apprenticeships for their kids and the solar installers of New Zealand are telling me there's not enough trained people."
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