Daily guide · SE2 · 2026-07-26
Negative-price watch Sweden Sundsvall: 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.
This week the floor in Sundsvall landed at -2,72 EUR/MWh, recorded on 19 July in hour 1. That is a shallow dip rather than a deep excursion, but it sits within a broader pattern of soft overnight pricing. Across the week there were 11 negative hours, alongside 50 hours priced below 10 EUR/MWh.
For the reader, the signal is less about the single negative print and more about the width of the low-price band. Fifty sub-10 EUR/MWh hours points to sustained periods of loose supply-demand balance, not a one-off event. The year-to-date count of 311 negative periods provides the longer-run context and confirms this is a recurring feature rather than an anomaly.
The concrete takeaway: treat the -2,72 EUR/MWh floor as a marker of a soft floor rather than a hard one, and focus planning on the 50 sub-10 EUR/MWh hours, where load-shifting and flexible consumption capture the most value. Overnight windows, consistent with the hour-1 floor, remain the natural place to look first.
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 SE2 stands.
-2.72
this week's floor (€/MWh), 2026-07-19 at 01:00 local
11 / 50
hours below €0 / below €10 this week
311
negative delivery periods in 2026 so far (SE2)
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": "SE2", "url": "https://your-app/hook"}' \
https://voltcast.com/api/v1/webhooksIt delivers seconds after the 13:00 CET publication, HMAC-signed. Journalists and analysts: the live SE2 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.
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-se2-2026-07-26".
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Negative-price records, the biggest spreads, which zones were hardest to forecast — every number computed from our production data, on the 2nd of each month. No filler, unsubscribe anytime.