Why are we dedicating half a day to electrification at LandWISE 2025?
Part of the answer, of course, is in the conference title – “Getting to Carbon Positive”. If we want to get our emissions to zero, we need to stop using fossil fuels. But that is only part of it as Uttam Singh Floray, Community Kead at Electrify Hawke’s Bay will explain.
Solar electricity is now the cheapest form of energy and it is getting cheaper. The cost to generate a kWh ranges from about 4c from a farm-scale system to perhaps 12c for a home system. If you generate it on-site, there are virtually no transmission losses. If you have excess, you can store some to use when the sun isn’t shining. Or you can sell it and have another income stream. Or both. The price you get depends on the agreement you reach and possibly on spot-prices.
In “Unlocking the potential of farm solar and storage”, Rewiring Aotearoa reports that a Federated Farmers’ survey of 1,000 farmers showed that 70% of respondents would consider installing solar panels and the enthusiasm was evenly spread across different age groups, genders and farm types. Going electric is a clear win on the numbers, both at home and on the farm, but it can be complicated in practice. Our keynote speaker, Rewiring Aotearoa CEO Mike Casey from Forest Lodge Orchard, is well versed in all this.
Lincoln University is establishing an electric research farm, a 1.5 MW solar installation that will comprise around 2800 photovoltaic (PV) panels, generating about 2.3 GWh of renewable energy per year. This will be described by Pieter-Willem Hendriks.
Another farmer with personal experience they are willing to share is Becks Smith. With her farm already set up, she now engaged in “Farmers supporting energy solutions on farm”.
One of the main issues facing those wanting to install solar at present is navigating the legal processes and regulatory requirements. Hopefully this will be quickly simplified, but electrical, building, resource management and utility requirements must all be met. Another is sizing the optimum system and allowing for future needs. We will use the MicroFarm solar system as a case study with Freenergy’s Aaron Duncan leading us through the various options modelled for economic optimisation, and the process of ticking boxes so our excess can be exported.
If you want to set up a totally off-grid system, some things will be easier. Electrical regulations must still be met, of course! Marc Dresser will discuss how simple a system can be, based on a lifestyle property. A remote building or electrical equipment could follow similar principles.
As someone who has driven a fully electric car for well over two years, I’m well aware of the questions I get most frequently. They are about range (I can get over 500km on a charge, weather and terrain depending), charging times (technically 350 km in 18 minutes on a fast charger or 50 km/h at home), cost of electricity (~12c/km on the most expensive charger, 0c/km at home), towing ability (my car has an 1,800 kg braked rating), and do I like it (YES!)
In Cyclone Gabrielle we plugged key home essentials – fridge, internet, electric jug – into extension cords from the car’s 230V vehicle to load (V2L) plugs. After about four days we had barely dropped the battery reserve.
Is it a 4WD ute suitable for hard farm work? (No)
But there are electric and hybrid ute options now. Some, like my car, have built-in 230V power outlets, very handy for using power tools a long way from home.
It might be a while before all farm machinery has electric options. In the meantime, it is possible to transplant an electric motor and power-pack into internal combustion engine (ICE) machines. You can see an example master-minded for Mountain Bike Rotorua by Ra Cleave from Ripple Tech. And because it isn’t just solar that enables on-farm electricity generation, Boyn Benton will outline some of the micro-hydro options available too.
We are setting up some physical displays at the Horizons Regional Council Field Session, so come along and learn about options for farm or home, car or machine, and whether electricity could be another income stream. And cut costs, emissions and your footprint at the same time.
