By Paul Homewood
h/t Ian Magness
A glimpse of our future!
New Zealand has serious problems with its power supply. There are three underlying reasons: the weather, a flawed electricity market and a drive for ‘net zero’.
Sixty-five per cent of New Zealand’s electricity is provided by hydropower, and the remainder by geothermal, gas, coal, wind and some solar. Though hydropower is often seen as the one form of renewable energy which is not plagued by intermittency of supply, it sadly isn’t true. In a dry year, hydro’s ability to deliver falls away, and we lose about 10 per cent of our generation. In the past, we always tried to have the hydro reservoirs and coal stockpile full by the end of summer to guard against this possibility. When we switched to an electricity market, this was forgotten.
This year, we failed to refill the reservoirs, and levels are now unusually low. We are muddling along for the moment, but this is a difficult position from which to recover and there are likely to be blackouts at some point in the future.
The ability of our fossil fuel power stations to step into the gap has been severely restricted. We used to get 20 per cent of our electricity from gas-fired power stations, but six years ago, as part of their decarbonisation policy, the previous government banned further gas exploration, and we are now desperately short of gas. The new government is encouraging new exploration but we won’t see the results for several years.
We also have a single coal fired station with insufficient coal in its stockpile because our electricity market does not pay for the cost of maintaining an adequate stockpile.
Full story here.
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August 29, 2024 at 03:44AM
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