Feb 21, 2025
Rewiring Aotearoa
Electric Avenue: February 21

It's a two-way street this week as energy minister makes positive noises about 'big batteries on wheels' playing a role in the energy system (and Zaptec smart chargers aim very high with a new campaign), Fed-Ex rolls out a few more electric delivery vans and wonders why everyone else isn't doing it, the story behind New Zealand's first electric coffee roastery in Queenstown, Christchurch Airport also claims a first with an electric firetruck, and Nat Bullard shows what's going on with the climate and where we're getting our energy from.

Plug and play

Petrol or diesel cars use the most energy in a household (around 60% of the total), and transport is responsible for most of our oil use, but electric vehicles - both small and large - could end up becoming an essential part of our energy system because these ‘big batteries on wheels’ could soon start to power our homes (V2H) and contribute to the energy market (V2G).

Australia is a fair way down this path and with 1.5 million EVs expected to be on Australian roads by 2030, it is estimated that just 10% of them with V2G capability could meet around one third of the National Energy Market's total storage needs.

This will require bi-directional charging and upgrades to some of the regulations, which are in train across the Tasman (and will hopefully be followed by the supposedly fast following New Zealand). 

As reported in interest.co.nz

Energy minister Simon Watts told interest.co.nz that energy security and affordability are his key priorities, and bidirectional charging, also known as V2G or vehicle to grid, is one of the options being considered for that.
"Consumer generated energy storage using batteries and or electric vehicles will play a key role in New Zealand’s future energy system, and I understand 'vehicle to grid' will increasingly become a reality as EV manufacturers enable this in their vehicles and networks," Watts said. "I believe there should not be any barriers to consumers doing this now if their vehicles and electricity networks enable it."

Some of the changes proposed by the Energy Competition Taskforce around exporting at peak times will also make EVs with this capability more bankable. 

Smart charging is an integral part of the future and Norwegian brand Zaptec launched an entertaining campaign for its new charger recently. It seems they’re aiming very high indeed. 

Delivering the goods

When you’re looking at the total kilometres driven in New Zealand, personal vehicles make up a relatively small chunk. The bulk of the total is from the trucks, buses, taxis and delivery vehicles that are always on the road and, as the economics improve, more of those machines are going electric. 

Fed-ex has invested in ten more electric LDV e-Deliver9 vehicles and, as station manager Troy Tipene wrote on the NZ EV owners Facebook page, “the driver feedback has been great. Although most were reluctant to jump ship from the trusty old Hiace or Merc sprinter, they now have the EV bug. Range anxiety is a thing of the past which is easily charged each night. Why other companies or contractors haven’t followed suit beats me and customer feedback has been great.”

As Fed-Ex said in a release: “This range, combined with the EV charging stations installed at FedEx facilities in Auckland, ensure that the vehicles can easily operate a full day's route, making them an efficient choice for last-mile delivery solutions.” 

The range on modern EVs is big enough for even the busiest of Uber drivers, school buses are going electric and making money when they're not being used at peaks, and for those businesses that need more range, like long-haul trucking, options like the all-electric Windrose are showing what’s possible. 

Good buzz

Ryder Coffee in Queenstown claims to be New Zealand’s first electric roastery after getting its hands on a German machine called a Probat P05e, the electric version of one of the world’s most well known roasters. 

As master roaster, relationship manager and founder Samantha Bright wrote on the company blog

“Traditionally, the roasting process creates gases which are emitted into the environment – an afterburner may be used to incinerate some of these gases, but this creates other emissions, none of which are environmentally friendly. When using electricity to roast, far less emissions are created, and there is no need for the installation of an afterburner, minimising our carbon footprint in the roasting process.”
Time spent warming up the roaster ready for a day of roasting is also cut down dramatically thanks to the electric hot air technology, requiring next to no time to warm up (or cool down!) as it works basically like a hair dryer – on demand heat, unlike gas heated drum roasters which typically take 30-60 minutes to properly warm up. This saves us energy, and time!” 

Increasingly, electric versions of fossil fuel machines offer the same results, with lower lifetime costs and much lower emissions. She says previous attempts have been made by other companies to create an electric roaster that stands up next to its gas heated counterpart, but they didn’t create like-for-like results in the cup. As we have seen over and over again, if you want to sell a sustainable product it needs to perform just as well.

“If we were going to drop a fortune on a new roaster, we weren’t going to compromise on the quality of the results the roaster was capable of, nor compromise on our efforts to run our roasting business as sustainably and planet-friendly as possible … We hope to see more of them arriving on our shores in the coming years, so as an industry we can move forward together in having a lower impact on the planet.”

Kudos for leading the charge. We know how powerful demonstration projects can be and we look forward to sampling some fine electric brews in the near future.

  • Buy your electric coffee here.

Siren call

Speaking of firsts, Christchurch Airport has just announced the arrival of the country’s (and Southern Hemisphere’s) first electric firetruck, a Rosenbauer RT. 

New Zealand's first electric fire truck is now ready to serve at Christchurch Airport.

As it says in a release: “The arrival of the new vehicle is part of the airport’s broader fleet transition programme. With the corporate fleet already 100% electric, the airport is now transitioning its emergency response vehicles as part of its commitment to a zero-emission fleet by 2035.”

We showcased Rosenbauer last year and they are amazing machines, as this test drive shows.  

Those doing the driving love them too. 

“Getting behind the wheel of this truck has been an amazing experience,” says Senior Firefighter Trevor Casey. “It’s incredibly smooth, responsive, and packed with smart features that help us do our jobs better. The training has been excellent, it’s going to take our response times and capability to the next level".

Rewiring always advocates for swapping the fossil fuel machines we can swap now while we wait for solutions in the harder-to-decarbonise sector. One electric firetruck and some electric cars may seem tiny when all those massive jets continue to fly in and out, just as electrifying a few gas boilers in a dairy factory or investing in EV tankers seems tiny in relation to all the emissions from the dairy sector, but we should still be able to celebrate the decisions that reduce fossil fuel use in some way. 

How’s our energy?

Nat Bullard is one of the most astute energy analysts in the world, and many look forward to his presentations about what’s happening to the climate and where we’re getting our energy from

As his latest presentation outlines, record amounts of fossil fuels and wood are being burned for energy, in large part because of the economic development in places like China, India and elsewhere. As he says: there is no such thing as a wealthy, low-energy country. 

But solar and batteries are also growing rapidly and there’s one big difference between these two energy sources: fossil fuels don’t rapidly improve in efficiency, whereas solar and batteries are showing signs of Moore’s Law-level of improvements and the cost is dropping so quickly that, as a recent paper in Nature suggested, solar and storage will be the cheapest form of electricity available in most of the world by 2027. 

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Via Gavin Mooney

This podcast interview with Derek Thompson is worth a listen for a summary of where we're at and how far we have to go.

Read moreDownload the document here

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