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15 Feb, 4 tweets, 1 min read
TEXAS orders rotating power outages after generation fails to meet load during cold weather:
Forced load-shedding is a sign of a power system under extreme stress, with inadequate firm generation capacity, inadequate capacity to import power from neighbouring areas to support the network, and inadequate flexibility on the consumption side
Forced loading shedding is always a planning failure. Like California blackouts last summer, post-event study needs to identify why ERCOT had insufficient firm generation; whether grid managers acted in time to manage reserve margins; and whether there is enough load flexibility
The U.S. power system regularly has problems as a result of extreme cold weather during Jan/Feb before - as this column from 2014 shows - so the strain on the Texas grid should have been anticipated by managers: reuters.com/article/us-usa…

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More from @JKempEnergy

John Kemp Profile picture
15 Feb
POWER GRID FAILURES never have a single cause. Grids should be managed conservatively with multiple layers of protection and reserves. Even if there is a single proximate cause, such as a single generator outage, the grid will only fail if those multiple layers have eroded
IN TEXAS, the proximate cause of grid failure was likely the extreme cold temperatures across much of the state. But big freezes are not that infrequent in the state. ERCOT's system operating plan should have been able to cope with the cold. The question is why it failed.
IN TEXAS, the power crisis seems to have blown through multiple layers of system protection, including spinning reserves, peaking power reserves, and demand-response, all of which seem to have proved insufficient, leaving ERCOT no option but massive forced load-shedding.
Read 8 tweets
John Kemp Profile picture
4 Dec 20
GLOBAL OIL MARKET - current situation and outlook for 2021 (When I joined Reuters, I told my boss @richardmably my ambition was to tell a story without words, only charts):
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John Kemp Profile picture
27 May 20
“ONE COUNTRY, TWO SYSTEMS,” formula for Hong Kong is ending. Protestors reject China’s sovereignty; China rejects HKSAR legal autonomy; and United States no longer willing to treat HKSAR as a separate economic and financial territory: state.gov/prc-national-p…
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OCTS required ambiguity at multiple levels: social, HKSAR, PRC, and international. But at every level the ambiguity has given way to pressure for clarity. And the compromises and contradictions are starting to unravel.
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John Kemp Profile picture
27 Sep 19
ECONOMIC GROWTH and technological change has always destroyed huge numbers of jobs in old industries while creating employment in new industries:
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John Kemp Profile picture
1 Aug 19
USTR LIGHTHIZER’s negotiating strategy can be summarised as lay out an uncompromising position and then engineer a deadline/crisis to push the negotiations over the line and secure a deal. Current White House has been an enthusiastic supporter of this approach giving 100% backing
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USMCA only reached conclusion by splitting weaker partner (Mexico) from stronger one (Canada), doing deal with weaker partner and threatening to leave stronger partner isolated if it didn’t sign on
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John Kemp Profile picture
22 Apr 19
SOME INFORMAL reflections on the U.S. decision to end all waivers for Iran sanctions:
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