Stuart Theobald

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Stuart Theobald

Stuart Theobald

@rationalhill

Chairman @kruthamx. Associate researcher @LSEPhilosophy. 6* finisher @WMMajors. Follow me on Bluesky https://t.co/3oa5ME6G3m

Johannesburg & London 参加日 Eylül 2009
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Krutham
Krutham@kruthamX·
The Financial Services Tribunal's recent ruling on African Bank vs the Prudential Authority reads on the surface as a routine compliance dispute. It is not, writes @rationalhill in this week’s Business Day column. Read more: krutham.com/insights/stuar…
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Stuart Theobald
Stuart Theobald@rationalhill·
Is there anything on X other than rage bait? Any considered views, based on careful thinking through the evidence, expressed with intellectual humility and the aim of genuinely wanting to know more?
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Stuart Theobald
Stuart Theobald@rationalhill·
@elonmusk @grok what is the rate of knife crime deaths in Great Britain compared to other developed countries?
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Krutham
Krutham@kruthamX·
One day remains to submit nominations for the 2026 Africa Impact Investment Awards. Nominations close 28 February. Submit: kaiia.krutham.com/entering-the-a…
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Stuart Theobald
Stuart Theobald@rationalhill·
@gabbo1961 As he said: "I will gladly accept any amount of future pain to do more to protect kids and give them a chance to grow up and have happy lives."
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Wayne Gabb
Wayne Gabb@gabbo1961·
@rationalhill To be fair why should US taxpayers fund everyone, when our own government is capturing the State and stealing the funds ?
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Protect Kamala Harris ✊
Protect Kamala Harris ✊@DisavowTrump20·
This is Alex Pretti, a registered nurse and the man murdered by ICE today in Minneapolis protecting a fellow citizen from Trump’s thugs. RETWEET to honor his life 💔
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Mishi Vibes 🇺🇲
Mishi Vibes 🇺🇲@Mishi_2210_·
Answer is not "300" Tell me the answer and win $1000
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Angus Parsad-Wyatt
Angus Parsad-Wyatt@anguswyatt·
NEW: @UKIP has submitted an application to the Electoral Commission to change its official logo. And it’s ever so slightly concerning… 👀
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Crypto roundhouse
Crypto roundhouse@Roundhouscowboy·
@theliamnissan Occam's razor says that you cannot attribute to malice what can be attributed to stupidity. Does anyone here actually think that they had evidence that could have put Trump away for child abuse in this form and they didn't use it in favor of trying to get him for bank records?
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Liam Nissan™
Liam Nissan™@theliamnissan·
The only reason the DOJ would release videos and Epstein letters they knew to be fake is to discredit the information they know to be real
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Republicans against Trump
Republicans against Trump@RpsAgainstTrump·
Steve Bannon: If we lose the midterms and we lose 2028, some in this room are going to prison, myself included.
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Krutham
Krutham@kruthamX·
Krutham’s executive chairperson, @rationalhill, will attend @theGIIN Impact Forum in Berlin from 7 to 9 October. DM us to discuss our work in outcomes-based finance. Learn more about Krutham’s research and instrument design in outcomes-based finance at krutham.com/outcomes-based…
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Grok
Grok@grok·
Renewable IPPs like solar/wind have high upfront costs (~R10-15M/MW for solar PV in SA, per GreenCape 2025), but low ops costs make LCOE ~R0.4-0.8/kWh vs. new coal >R1.5/kWh. Feasibility comes from private financing via REIPPPP bids (some at R0.34/kWh), govt incentives, and falling global prices (solar down 89% since 2010). Scaling needs grid investment, but adds capacity without Eskom's full capex burden.
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Sentletse 🇿🇦🇷🇺🇵🇸🇱🇧
Eskom reported R16bn profit for 2024/2025. What is most glaring is the R23bn reduction in primary energy cost. This reduction is attributable to less reliance on useless and costly IPPs and the burning of diesel. In 2024, IPPs represented 27% of total primary energy costs while contributing less than 5% total energy output. In 2025, IPPs represented only 8% of total primary energy costs. A significant reduction which saved Eskom money as coal power plants performed exceptionally. We do not need IPPs.
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Stuart Theobald
Stuart Theobald@rationalhill·
@grok @MadumeDumela But what's your point @MadumeDumela ? We all know Eskom invested in IPPs to help develop the technology and diversify revenue sources. Thanks to those efforts new IPPs are the cheapest source of electricity. So Eskom needs to lower average costs by buying much more from IPPs.
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Grok
Grok@grok·
@MadumeDumela @rationalhill Based on Eskom's FY2025 results, IPPs delivered 19.5 TWh (19,500 GWh) to the grid at a total cost of R45.9 billion, yielding an effective cost of R2.35/kWh (or R2,350/MWh). This reflects actual purchases and tariffs. Sources: Eskom annual results presentation.
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Stuart Theobald
Stuart Theobald@rationalhill·
@MadumeDumela @grok Grok was clear. New IPPs less than half the cost of new coal. So every new IPP Eskom adds reduces average cost of electricity.
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Madume Africa 🌍
Madume Africa 🌍@MadumeDumela·
@grok Now focus on the total supplied in FY25 for the respective , versus the cost reflected in the above pictures. Use proportionality to conclude on the total supply cost
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