There must be analogous situations in NZ to those described.
from a reader
Recently I did some work for the body corporate at the Dock 5 Apartment Building in Docklands in Melbourne to see if we could install a small number of electric charging points for owners to charge their electric vehicles. We had our first three applications. We discovered:
1. Our building has no non-allocated parking spaces, i.e. public ones. This is typical of most apartment buildings so we cannot provide shared outlets.
2. The power supply in the building was designed for the loads in the building with virtually no spare capacity. Only 5 or 6 chargers could be installed in total in a building with 188 apartments!
3. How do you allocate them as they would add value to any apartment owning one. The shit fight started on day one with about 20 applications received on the 1st day and many more following.
4. The car park sub-boards cannot carry the extra loads of even one charger and would have to be upgraded on any floors with a charger as would the supply mains to each sub board.
5. The main switch board would then have to be upgraded to add the heavier circuit breakers for the sub mains upgrade and furthermore:
6. When Docklands was designed, a limit was put on the number of apartments in each precinct and the mains and transformers in the streets designed accordingly. This means there is no capacity in the Docklands street grid for any significant quantity of car chargers in any building in the area.
7. It gets better. The whole CBD (Hoddle Grid, Docklands and Southbank) is fed by two substations. One in Port Melbourne and one in West Melbourne. This was done to have two alternate feeds in case one failed or was down for maintenance. Because of the growth in the city, Docklands and Southbank ,now neither one is now capable of supplying the full requirement of Melbourne zone at peak usage in mid- summer if the other is out of action.
The Port Melbourne 66,000 volt feeder runs on 50 or 60 year old wooden power poles above ground along Dorcas Street South Melbourne. One is pole is located 40 cm from the corner curb at the incredibly busy Ferrars /St Dorcas St Intersection and is very vulnerable to being wiped out by a wayward vehicle.
8. The infrastructure expenditure required would dwarf the NBN [National Broadband Network] cost excluding the new power stations required.
These advocates of electric vehicles only by 2040 are completely bonkers. It takes 5-8 years to design and build a large coal fired power station like Loy Yang and even longer for a Nuclear one (That’s after you get the political will, permits and legislative changes needed). Wind and solar just can’t produce enough. Tidal power might, but that’s further away than nuclear.
It’s just a Greenies’ dream in the foreseeable future other than in small wealthy countries. It will no doubt ultimately come but not in the next 20 years…
The grid cannot support it in most places in Australia!
For New Zealand — Michael Kelly has done an analysis of the real costs of Net Zero, the politicians mostly do not consider these realities. Dr Kelly has drawn attention to the fact that most homes will need to be rewired, as existing wiring will not take the additional load required. In fact his analysis for New Zealand is published by the Global Warming Policy Foundation (GWPF) see Delivering Net Zero: A report from a putative delivery agency (bryanleyland.co.nz). The NZ ambition to replace internal-combustion engines with electric cars | CCG (climateconversation.org.nz).
The estimated cost is $NZ 550 billion, not including the cost of shutting down oil and gas exploration in the Taranaki, not the reduction in primary production up to 2050, say $100 billion. Thus the real cost is closer to $NZ 700 billion, just a bit more than the “less than 1% of GDP”, estimated by the Climate Commission or 7% of GDP estimated by McKinseys.