Joannes Laveyne
@jolaveyne.bsky.social
1K followers 130 following 570 posts
PhD MSc at Electrical Energy Lab of Ghent University. Spaceflight enthusiast. Speelvogel. West-Vlaming in Hent. Stating a personal opinion.
Posts Media Videos Starter Packs
jolaveyne.bsky.social
Inertie wordt een product. Laat het maar aan de markt over om de beste aanbieder te kiezen.
jolaveyne.bsky.social
Ja, dat gebeurt al in o.a. Ierland en lijkt mij ook voor onze gascentrales geen slechte 'zomerjob'. Vereist wel wat technische aanpassingen, maar het kan.
jolaveyne.bsky.social
On a side note: love how you slipped in the Flengish 'panic football' there. 😁
jolaveyne.bsky.social
Spanje is natuurlijk wel een edge case (letterlijk) wegens de rand van de badkuip en dus gevoeliger voor deining in het EU net. België zit gesandwitched tussen heel sterke buren. En we hebben nog meer klassieke generatie. Neemt niet weg dat er ook hier aanpassingen in netuitbating nodig zijn.
jolaveyne.bsky.social
Echt eh. Vanaf enkele rechtse trolls ze gevonden heeft wordt het daar zo triestig dat het terug hilarisch wordt. 😆
jolaveyne.bsky.social
Because Belgium is so well connected, it also makes us attractive for BESS investments. You can serve BE, NL, DE and FR markets from here.
jolaveyne.bsky.social
Our geography doesn't allow for a increase in hydro. But the light gray battery discharge you see there is mostly capacity added in just the last year or so. There is a pipeline of ~9 GW of planned large-scale BESS, but uncertain how much will reach FID (cannibalisation effects).
jolaveyne.bsky.social
Technisch kunnen ze idd veel meer, uitdaging is vooral economisch/logistiek. Zeker voor een nucleair niet-geïntegreerde speler als Engie. In Frankrijk is het niet zo'n probleem als één reactor wat te veel of te weinig heeft gemoduleerd, de andere 55 vangen dat wel op. Hier zou dat big problemo zijn.
jolaveyne.bsky.social
Goede opmerking! Dit zal idd ook meespelen denk ik.
jolaveyne.bsky.social
D4T3 mogen 1% Pnom/min moduleren tot een minimum van 50% en 2h, kunnen dit om de 72h herhalen, en dit maximum 30 keren per brandstofcyclus van 18 maanden.
Hier is het dus geen modulatie, maar een grafiek die rekening houdt met im- en export (flow tracing).
jolaveyne.bsky.social
Inderdaad: de grafiek is de flow traced energiemix, rekening houdende met im- en export. Als er bv. veel lokale opwekking is verdringt dit kernenergie wat, dit wordt dan geëxporteerd. Op andere momenten importeren we wat Nederlandse of Duitse kolenstroom.
jolaveyne.bsky.social
Just a few years ago, it seemed implausible to run an energy system dominated by renewable energy. Even today, that narrative still pops up from time to time.
Yet we are doing it now. And tomorrow we will do it even better.
jolaveyne.bsky.social
This stability has everything to do with the quality of the forecasts. Predicted and measured wind and solar production matched almost perfectly. Renewable energy may be intermittent, but it is not unpredictable. And we are getting better and better at it. /
jolaveyne.bsky.social
Perhaps the most striking observation: the system imbalance rarely exceeded ±400 MW and the imbalance price fluctuated around €0/MWh for most of the time. In other words, the system maintained its frequency better than a Swiss clock. /
jolaveyne.bsky.social
Electricity prices remained close to or below zero for most of the weekend, only rising late on Sunday (to a still acceptable level these days).
It is quite rare for prices to be so low for an entire day. This shows how quickly market dynamics are changing. /
jolaveyne.bsky.social
Flow traced (taking into account imports and exports), Belgium's energy mix was:
• 🌬️ 69% renewable energy (mainly wind, some solar and bio)
• ☢️ 19.5% nuclear energy
• 🔥 6.2% fossil fuels (mainly gas)
• ❔ 5.3% other
(data: Live Electricity Maps) /
jolaveyne.bsky.social
It may have escaped your attention, but the Belgian energy system has quietly passed an important test. During the weekend of 4-5 October 2025, our consumption was almost entirely covered by renewable energy. And yet the system ticked like a Swiss watch. /
jolaveyne.bsky.social
"Slechts 1% van de woningen staat leeg, en in centrumsteden nog veel minder" was toch eigenlijk een betere kop geweest, niet?
jolaveyne.bsky.social
(For the techies: for example, it appears that the OLTC (mechanical systems for voltage control on the secondary side) are not fast enough compared to inverter-connected production, which also has overly strict safety margins. By the time OLTC regulates down, inverters have already disconnected.)
jolaveyne.bsky.social
The actual cause(s) are still being investigated (report in Q1-26). However, it seems clear that with production increasingly shifting to MV/LV level, the operation of the HV grid must also change. /
www.entsoe.eu/news/2025/10...
28 April Blackout in Spain and Portugal: Expert Panel releases comprehensive factual report
www.entsoe.eu
jolaveyne.bsky.social
In particular, the tripping of a transformer station at 12:32:57 due to excessive voltage on the secondary side (cause still unknown), followed shortly afterwards by the tripping of two large PV installations at 12:33:16 (cause unknown), appears to have brought the system to its knees. /
jolaveyne.bsky.social
The official ENTSO-E report on the Spanish blackout, released today, seems to confirm in detail what was already broadly known: a power surge event led to the shutdown of high-voltage lines and production units, plunging the peninsula into darkness in 30 seconds. 🧵
Reposted by Joannes Laveyne
akshatrathi.bsky.social
There's a severe shortage of gas turbines globally. Wait times have gone up from 2 years to 5 years or more. AI companies are willing to pay any price to get their hands on them.

Is that a climate blessing or curse? Our global investigation has an answer.

🎁link
www.bloomberg.com/features/202...
AI-Driven Demand for Gas Turbines Risks a New Energy Crunch
Orders for turbines to power natural gas plants are vastly outpacing supply, threatening the world’s ability to keep pace with rising electricity demand.
www.bloomberg.com