Feb 28, 2025
Rewiring Aotearoa
Electric Avenue: Feb 28

As the focus remains on rising electricity costs in New Zealand, solar and storage continues to drop in price and is set to become the cheapest source of energy around the world in the next few years; an Auckland man's quest to create the world's first electric helicopter; the efficiency of electric flight and the pitfalls of predictions; an electric road in Sweden that could wirelessly charge EVs; solid state batteries take to the streets and look set to increase range; and why going electric was better than offsetting because it led to actual emissions reductions for WoolWorks and Sawmill.

Slip, slop, slap on some solar and storage

There’s been an understandable focus on the price of electricity recently, with fears we may be in for a repeat of the wholesale debacle of 2024 as our hydro lake levels remain low. Yesterday, the Energy Competition Taskforce made another announcement about levelling the playing field for independent retailers and removing preferential pricing for the gentailers’ retail arms and, just like the announcement prior to that that talked about moves to level the playing field for customers with solar and batteries, this is another positive step towards a fairer system, but it’s not guaranteed to bring electricity prices down. 

What is more likely to bring prices down is solar and batteries, and a recent paper in Nature suggested that solar and storage would be the cheapest energy source in most of the world by 2030, with most of the switch happening by 2027

With our world-class hydro scheme, we already have a lot of the storage built, so we’re looking a gift horse in the mouth if we don’t follow the money. 

Image via Gavin Mooney

Check out our latest explainer ‘why solar makes sense’ to see how solar can turn sunlight into water and help keep our hydro lakes full. 

Good rotations

New Zealand has a rich history of aviation innovation, with a farmer from Timaru supposedly beating the Wright Brothers into the air for the first time. There was no proof of Richard Pearse's flight, unfortunately, but there is plenty of footage of Oskar Stielau’s test flights in the world’s first electric helicopter. 

As this article says, the Auckland inventor first had the idea in 2010 and he's still perfecting it, with an ultralight test taking place last year. 

Electricity in a battery is a much more efficient way to move your car and it’s also the most efficient way to move your machines in the air. The below graphic shows the Elysian E9X battery powered plane in comparisn to hydrogen or sustainable aviation fuel. 

While there is plenty of electric potential with smaller aircraft and short haul flights (like this beautiful looking contraption from Pivotal) jets do most of the world’s flying. Some think it will be impossible to electrify these machines, but saying something is impossible is an invitation to join the long list of things that were deemed impossible before they were created, like computers, electric cars, or nuclear energy. As Wilbur Wright said in 1901: “Not within a thousand years will man ever fly”. In 1903, they took to the skies. 

No stopping

One day soon, after our cars have finished powering our house or feeding electricity back into the grid, you might be able to charge it up as you drive: Sweden is set to launch a section of electrified highway this year that will wirelessly charge vehicles with that capability. 

Sweden has already experimented with electric truck routes and its E20 highway is part of a goal to create 3,000 kilometers of electrified roads. 

As the range increases in EVs, there’s less need for charging away from home, however. Mercedes has just started trialling solid state battery tech in the real world and it is expected to increase the range by 25%. 

As the story says: “Solid-state batteries promise more range, faster charging times and better fire safety at similar or reduced weight compared to traditional lithium-ion batteries.The EQS is expected to deliver 620 miles (1,000 kilometers) of range on the WLTP cycle.”

Click go the shears, boys

New Zealand owes a lot to the sheep. Fortunes were made off the back of them, quite literally, and now money is being saved and emissions are being reduced with electric wool. 

EECA's case studies show what's possible when homes and businesses electrify and as this clip on WoolWorks New Zealand shows, going electric is the best way to actually reduce emissions, not just offset them.

“With support from EECA, WoolWorks replaced a coal-fired boiler with an 8MW electric boiler and an industrial heat pump, cutting 11,000 tonnes of CO2 emissions each year. This shift strengthens New Zealand’s position in the global wool market, where eco-credentials are increasingly valued.”

And after they’ve finished their electric scouring, they presumably kick back with an electric beer from Sawmill. 

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