this post was submitted on 09 May 2024
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Transpower warns of possible power shortages on Friday (www.rnz.co.nz)
submitted 6 months ago by Dave@lemmy.nz to c/newzealand@lemmy.nz
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The national electricity grid operator is warning of possible insufficient power generation to meet households' demand on Friday.

Transpower has issued a notice saying there was a risk that power generation and reserves would not meet demand between 7.30am-8.30am.

It said if power generators could not provide enough electricity, Transpower would manage demand to avoid a grid emergency.

"The system operator may instruct the grid owner to disconnect feeders without further notice to connected parties," it said.

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[–] haydng@lemmy.nz 3 points 6 months ago* (last edited 6 months ago) (1 children)

I believe a portion of it is quite a low forecast for wind generation coinciding pretty closely with the morning peak.

The peak-trough consumption difference seems to be about 2GW, and wind generation averages about 400MW but can hit 900MW

If you wanna poke around with some historical data yourself, I scrape a lot of it for my own curiosity, and have opened up my dashboard

[–] Dave@lemmy.nz 1 points 6 months ago

The original article has been fleshed out and they now say it's because a lot of generation is offline for maintenance ahead of winter, and this cold weather is earlier than expected.

If you wanna poke around with some historical data yourself, I scrape a lot of it for my own curiosity, and have opened up my dashboard

Oh wow heaps of cool stuff there! What happened to hydro in 2021/2022? Capacity doubled overnight, is this just a measuring issue? graph of electricity sources in NZ by type for last 5 years showing hydro jumping in capacity on 1 Jan 2022