{"id":2988,"date":"2026-06-26T09:09:58","date_gmt":"2026-06-26T09:09:58","guid":{"rendered":"https:\/\/reliablemovingcrews.com\/?p=2988"},"modified":"2026-06-26T09:09:58","modified_gmt":"2026-06-26T09:09:58","slug":"how-to-track-european-power-system-stress-during-heatwave","status":"publish","type":"post","link":"https:\/\/reliablemovingcrews.com\/?p=2988","title":{"rendered":"How to track European power system stress during heatwave"},"content":{"rendered":"
LITTLETON, Colorado, June 26 (Reuters) – Scores of cities across Europe are sweltering under record temperatures that are boosting demand for cooling systems while forcing utilities to scale back power production to avert outages.<\/div>
The double whammy of higher electricity demand and lower supply is \u200bplacing unprecedented strain on the region’s power grids that are already struggling to accommodate rising electricity use from data centers, EVs and \u200cheat pumps.<\/div>
Here is a breakdown on how to track the fallout from the ongoing heatwave across Europe’s power systems, where power prices and generation mixes remain in constant flux as a result of the stress.<\/div>

PRICE SIGNALS<\/h2>
Many of Europe’s largest power markets have day-ahead and intraday prices which provide useful clues on expected system conditions, and reveal several things at once.<\/div>
High and rising prices indicate \u200bthat demand is expected to remain strong while supply is set to remain tight.<\/div>
Rising power prices can also reveal which power source is setting the \u200bmarginal price for production in key markets, thanks to the so-called merit order pricing system.<\/div>
In most European power markets, the \u2060most expensive power source needed to meet demand sets the price for the whole market, which is often gas-fired plants but can also be coal, nuclear and \u200bhydro power systems.<\/div>
High day-ahead prices can therefore indicate which technology is setting the marginal price in which market, and what fuel and carbon costs will feed through each \u200bsystem as power firms adjust output mixes to balance market needs.<\/div>
Subscribers to market data providers such as LSEG can track power prices in the energy and power applications, while websites such as EUenergy.live<\/svg>, opens new tab<\/span> and electricitymaps.com<\/svg>, opens new tab<\/span> also provide recent data on prices and generation mixes.<\/div>

POWER FLOWS<\/h2>
Imports and exports also play a key role in Europe’s power markets, with countries such as France and Norway normally large \u200belectricity suppliers to neighboring nations.<\/div>
Again, the likes of LSEG have real-time data on cross-border power trading available to subscribers, while the International Energy Agency also provides tracking \u200btools to measure the direction and scale of trade among key nations.<\/div>
Unexpected outages in key exporter nations can have far-reaching repercussions throughout Europe, and can trigger a widespread rise in regional \u200cprices if \u2060normally large and persistent exporters cut back on supplies for extended periods.<\/div>

OPERATOR ALERTS<\/h2>
Power market trackers must also stay on top of grid operator notices, which inform market participants of potential network issues.<\/div>
Common heat-related alerts include voltage control problems, which can arise when demand for air conditioners peaks just as supply flowing through key infrastructure such as transmission lines dips due to heat stress.<\/div>
Grid operators also use alerts to call for reduced consumption among key power users or during particular time periods, and so can \u200bact as a further signal on the \u200bhealth of key networks.<\/div>
France’s main operator \u2060of nuclear plants issued a notice this week warning that high temperatures have reduced the supply of river water that can be used to cool its reactors, forcing them to reduce output.<\/div>
The United Kingdom’s grid operator also issued a rare electricity margin \u200bnotice this week, warning that supply may be lower than normal just as total system demand pushes higher.<\/div>
With extreme heat \u200bwarnings in effect through \u2060the rest of this week in the UK, France and other parts of Europe, further stress on regional power grids is likely that can impact traders, utilities and businesses alike.<\/div>
For those watching closely, the signals are already there: in rising prices, shifting power flows, changing generation mixes, and alerts from grid operators.<\/div>
The opinions expressed here are those of \u2060the author, a \u200bcolumnist for Reuters.<\/div>
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