Daily guide · NL · 2026-07-29

Negative-price watch Netherlands: this week's floor, and what's ahead

All numbers computed from the week's published auction results at publication and frozen — this article is an honest snapshot, not a page that rewrites itself. Reproduce via the API.

The week's floor landed at -10,63 EUR/MWh on 25 July, hour 14, squarely in the midday solar window where Dutch prices most often turn negative. That single print sits inside a broader pattern: 15 hours went negative this week, and 29 hours cleared below 10 EUR/MWh, meaning roughly twice as many hours were soft as were outright negative.

For readers, the signal is less about the floor itself than its shallowness. At -10,63 EUR/MWh the downside was modest, and our seven-day forecast recorded no negative-price hours, suggesting the model did not anticipate this cluster. That gap is worth noting when planning around midday exposure. The year-to-date count now stands at 1.524 negative periods, so the structural trend remains firmly in place regardless of any single week.

The concrete takeaway: treat the early-afternoon hours as the primary risk window, since both the floor and the bulk of the 15 negative hours concentrate there. With 29 sub-10 hours on the week, the softness extends well beyond the negatives, and that is where flexible load or storage has the clearest room to work.

When wind and solar produce more than a zone can consume or export, the day-ahead auction clears below zero — producers literally pay consumers to take power. Negative prices went from curiosity to structural feature across Europe, and for anyone with flexible load or storage they're the most interesting hours of the year. Here's where NL stands.

-10.63

this week's floor (€/MWh), 2026-07-25 at 14:00 local

15 / 29

hours below €0 / below €10 this week

1,524

negative delivery periods in 2026 so far (NL)

The forward view

Our negative-price risk model (Brier-scored daily against climatology — record on /accuracy) currently puts the peak probability of a sub-zero period in NL over the next 7 days at 0%. That number updates daily via GET /v1/risk/negative/NL — a 14-day calendar of per-15-minute probabilities.

Never miss one again

The useful pattern isn't watching a dashboard — it's a webhook that fires when tomorrow's auction clears negative anywhere in your zone: 

curl -X POST -H "Authorization: Bearer YOUR_KEY" \
  -H "Content-Type: application/json" \
  -d '{"event": "negative_prices", "zone": "NL", "url": "https://your-app/hook"}' \
  https://voltcast.com/api/v1/webhooks

It delivers seconds after the 13:00 CET publication, HMAC-signed. Journalists and analysts: the live NL tracker has the all-time records, monthly history and a CSV download — free to cite with attribution. For the systematic view (which hours, which seasons, how deep), the full 2015+ archive is one bulk export away.

Live NL prices → All daily guides → Get a free API key →

Method & citation. Prices are hourly means of published day-ahead auction results (native 15-minute periods averaged; ENTSO-E/SMARD, attributed). Wholesale-price component only — grid fees and taxes come on top and vary by supplier. Cite as "Voltcast Research, voltcast.com/guides/negative-watch-nl-2026-07-29".

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