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Heat failure: Why essential tech fails when the temperature rises

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A woman stands silhouetted on the banks of the River Thames, holding a purple umbrella for shade.

As one of France’s hottest days on record unfolded on 23 June, exasperated people painted white chalk on their windows to screen out the sun. Paris’s Eiffel Tower closed early.

And in the town of Ergué-Gabéric, in Brittany, the punishing temperatures – around 40C – were too much for one electric transformer.

The chunky metal box malfunctioned, initially leaving more than 100,000 people without power.

It was a “heat related” incident, according to local authorities, external. Videos posted to social media appeared to show a plume of smoke rising from the stricken transformer. A spokeswoman for power company RTE confirmed to the BBC that the video showed one of the firm’s facilities.

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The day before the accident, RTE had published a statement, external saying there was “no concern” surrounding the availability of electricity across its network this summer.

Just as we all have our own limits in terms of high temperatures, so too does technology. Electrical and telecoms equipment, and railway signalling cabinets sometimes falter during a heatwave. Extreme temperatures can even set off alarm systems.

Heat-troubled tech is a serious issue.

For instance, six NHS trusts in England declared a critical incident last week after hot weather adversely affected their IT systems, scanners, and cancer and lab equipment.

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More frequent and more intense heatwaves triggered by human-caused climate change mean that engineers are increasingly adapting infrastructure to cope.

“Anything to do with the electricity network – the power lines, the interconnectors and transformers – they all struggle to keep themselves cool enough,” explains Iain Staffell at Imperial College London. “It reduces the efficiency of everything.”

Staffell and colleagues estimate that, in temperatures of 40C, the output of gas-fired power stations drops by roughly 10% versus 20C.

The efficiency of solar panels also falls as temperature rises, though Staffell notes that this effect has become less pronounced with newer generations of panels.

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Even so, the impact of high temperatures on solar energy in Great Britain is visible in data he and his colleagues have analysed and shared with the BBC. “Once the UK gets above 27C, our solar output plateaus and starts to slowly fall [as temperatures continue to rise],” says Staffell.

That said, extended periods of sunny weather during heatwaves can still boost solar output relative to cloudier days before the heatwave hit. This happened last week, according to comparison website Utility Bidder.

Aside from electricity-generating facilities, consider also the power lines that swathe the country. These cables are made of metal, which expands in heat, causing the lines to droop. Running electricity through them generates even more heat.

“There is a limit to how much droop you can allow,” says Simon Hogg, a consultant and professor emeritus at Durham University.

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If sagging cables touch trees or buildings below, that could cause an accident or power failure.

This scenario was behind a massive blackout in 2003 in North America.

Given the risk, operators reduce the amount of electricity sent along power lines during heatwaves, limiting the supply.

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Goldman Sachs sees a bigger space opportunity beyond launch providers

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Goldman Sachs sees a bigger space opportunity beyond launch providers
Space stocks could offer significant long-term growth opportunities as the industry expands beyond rocket launches into satellites, orbital broadband, communications, defence applications and other space-enabled services, although high valuations and extreme volatility could make the investment journey uneven, according to a research report by Goldman Sachs.

The research report noted that opportunities may increasingly emerge from the broader space ecosystem and its supply chain, rather than only from companies directly involved in launching rockets. Semiconductor, electronics, software, advanced materials, manufacturing and communications infrastructure companies could benefit as the commercialisation of space accelerates.

Goldman Sachs said its custom basket of US space and satellite stocks had gained around 13 per cent in 2026 through July 14, outperforming the 9.8 per cent rise in the S&P 500 over the same period. The basket has risen more than 360 per cent over the past two years, although its rally has cooled from its late-May peak.

The report noted that the space theme has evolved significantly, with investors increasingly focusing on rocket launches, satellites, global communications and potential future markets enabled by space technologies. Some companies in the basket are also seeing rising sales linked to US government defence contracts, particularly in satellite imagery and connectivity.

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A key factor supporting the sector’s outlook is the improving economics of space activity. Goldman Sachs said the cost of rocket launches and satellites has declined, while opportunities in global communications services are developing. Some companies in the space and satellite basket could become profitable as early as next year, according to analyst Louis Miller.


The report also highlighted growing investor interest in orbital broadband services, including companies such as SpaceX’s Starlink. Potential future applications such as orbiting data centres are also attracting attention, although these remain longer-term opportunities.
Goldman Sachs said demand for space-related investments is coming from retail, private wealth and institutional investors, with many seeking differentiated secular growth themes rather than traditional sector allocations.

However, the sector remains highly volatile. The Goldman Sachs space basket is roughly twice as volatile as a comparable AI basket and about five times as volatile as the S&P 500. The report cautioned that investor enthusiasm could periodically run ahead of fundamentals even if the sector’s long-term structural direction remains positive.

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Red-Hot Inflation And (Inflation-Adjusted) Strong Domestic Private-Sector Demand Marks Q2 GDP – Debt-To-GDP Ratio Dips To 121.5%

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Red-Hot Inflation And (Inflation-Adjusted) Strong Domestic Private-Sector Demand Marks Q2 GDP - Debt-To-GDP Ratio Dips To 121.5%

Red-Hot Inflation And (Inflation-Adjusted) Strong Domestic Private-Sector Demand Marks Q2 GDP – Debt-To-GDP Ratio Dips To 121.5%

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Auto & Transport Roundup: Market Talk

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Auto & Transport Roundup: Market Talk

The latest Market Talks covering the Auto and Transport sector. Published exclusively on Dow Jones Newswires at 4:20 ET, 12:20 ET and 16:50 ET.

0921 ET — Magna International is improving its margins even while the world produces fewer vehicles. TD Cowen’s Brian Morrison says in a report 2Q results “reinforce Magna’s margin improvement story with adjusted EBIT margin expanding y/y to 6.2% despite lower y/y global light vehicle production.” At the same time, sales increased 3% to $10.98 billion, on “anticipated benefit of FX y/y and new program launches, partially offset by lower global production y/y.” This bodes well for the company. Morrison says that along with strong free cash flow, he sees upside potential to consensus and the applied multiple.” (adriano.marchese@wsj.com)

Copyright ©2026 Dow Jones & Company, Inc. All Rights Reserved. 87990cbe856818d5eddac44c7b1cdeb8

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Organon Co earnings missed by $0.50, revenue fell short of estimates

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Organon Co earnings missed by $0.50, revenue fell short of estimates

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Politics And The Markets 08/02/26

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OneWater Marine Inc. (ONEW) Q1 2026 Earnings Call Transcript

This is the forum for daily political discussion on Seeking Alpha. A new version is published every market day.

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SpaceX Stock Hits a Record Low. Starship’s Heat Shield Is Just One More Hurdle.

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SpaceX Stock Hits a Record Low. Starship’s Heat Shield Is Just One More Hurdle.

SpaceX Stock Hits a Record Low. Starship’s Heat Shield Is Just One More Hurdle.

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Balchem Stock: It’s A Buy From Me After Posting Strong Q2 Results (NASDAQ:BCPC)

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Balchem Stock: It's A Buy From Me After Posting Strong Q2 Results (NASDAQ:BCPC)

This article was written by

I have a masters degree in Analytics from Northwestern University and a bachelors degree in Accounting. I have worked in the investment arena for over 10 years starting as an analyst and working my way up to a management role. Dividend investing is a personal hobby and I look forward to sharing my thoughts with the Seeking Alpha community.

Analyst’s Disclosure: I/we have no stock, option or similar derivative position in any of the companies mentioned, and no plans to initiate any such positions within the next 72 hours. I wrote this article myself, and it expresses my own opinions. I am not receiving compensation for it (other than from Seeking Alpha). I have no business relationship with any company whose stock is mentioned in this article.

Seeking Alpha’s Disclosure: Past performance is no guarantee of future results. No recommendation or advice is being given as to whether any investment is suitable for a particular investor. Any views or opinions expressed above may not reflect those of Seeking Alpha as a whole. Seeking Alpha is not a licensed securities dealer, broker or US investment adviser or investment bank. Our analysts are third party authors that include both professional investors and individual investors who may not be licensed or certified by any institute or regulatory body.

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Fires on more than 250,000 acres of Washington state prompt evacuations

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Fires on more than 250,000 acres of Washington state prompt evacuations

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These Were the Best and Worst S&P 500 Stocks in July

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These Were the Best and Worst S&P 500 Stocks in July

These Were the Best and Worst S&P 500 Stocks in July

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Recent Quarterly Report Shows Improvement For NB Bancorp Stock (NASDAQ:NBBK)

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Recent Quarterly Report Shows Improvement For NB Bancorp Stock (NASDAQ:NBBK)

This article was written by

I have been involved in the financial world for over 25 years with experience as an advisor, teacher, and writer. I am a full believer in the free-market system and that financial markets are efficient with most stocks reflecting their real current value. The best opportunities for profits on individual stocks come from stocks that are less-widely followed by the average investor or from stocks that may not accurately reflect the opportunities that currently exist in their markets.

Analyst’s Disclosure: I/we have no stock, option or similar derivative position in any of the companies mentioned, and no plans to initiate any such positions within the next 72 hours. I wrote this article myself, and it expresses my own opinions. I am not receiving compensation for it (other than from Seeking Alpha). I have no business relationship with any company whose stock is mentioned in this article.

Seeking Alpha’s Disclosure: Past performance is no guarantee of future results. No recommendation or advice is being given as to whether any investment is suitable for a particular investor. Any views or opinions expressed above may not reflect those of Seeking Alpha as a whole. Seeking Alpha is not a licensed securities dealer, broker or US investment adviser or investment bank. Our analysts are third party authors that include both professional investors and individual investors who may not be licensed or certified by any institute or regulatory body.

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