Nord Pool opens door to later start as day-ahead volumes dry up before 09:00 CET
Nordic exchange sees thin early trading and weighs shifting opening hour, a sign of structural change in how regional power changes hands.
Nord Pool said Thursday (2026-05-21) it is ready to discuss opening day-ahead trading an hour later than the current 08:00 CET start, citing very low volumes in the first hour of the session. Only around 2% of the exchange's trades occur between 08:00-09:00 CET, a figure that raises questions about whether the current timetable still fits how Nordic power is bought and sold.1
That matters for generators, utilities and traders who staff desks for an hour that barely moves the market. A later start would shift when participants must commit to physical delivery schedules, potentially compressing decision windows for hydropower producers who dominate the Nordic mix and who now face a separate set of pricing headaches.1,4
The discussion arrives as flow-based market coupling is already distorting how Norwegian hydropower values clear. Power prices in central Norway have surged amid physical grid constraints and flow-based calculations, according to the head of physical power trading at a renewable energy firm who spoke to Montel. That disconnect between the exchange's clearing mechanics and actual transmission limits has created problems for producers facing tight supply.4
Nord Pool's willingness to trim its trading day reflects a broader strategic push. The exchange plans to expand its financial power futures offering to European countries next year, adding to its Nordic and Baltic base, its CEO told Montel. A shorter day-ahead session in the Nordics would not obviously hurt that ambition, but it does signal where the exchange sees growth.3
The low-volume hour is not new. Day-ahead auctions across Europe have consolidated into thinner windows as financial trading on separate venues grows and as portfolio optimisation tools reduce the need for manual positioning in the early morning. The question for Nord Pool is whether its timetable still serves the physical market it was built for, or whether it now mainly adds cost.1
Hydropower producers in central Norway are watching a separate issue. Flow-based pricing has pushed their local prices higher even as supply tightens, a combination that should favour sellers but complicates hedging. If day-ahead hours shift, those producers lose one more fixed reference point in a market where the relationship between physical constraints and clearing prices is already hard to read.4
The regional context is mixed. Serbian day-ahead power settled above EUR 100/MWh on Tuesday (2026-05-19) as a supply shortfall from neighbouring Kosovo, where planned outages have left the coal fleet 400-800 MW short of demand, pushed volumes onto surrounding grids, a regional trader told Montel. That is a different market from the Nordics, but it shows how tight supply in one system now ripples through day-ahead outcomes across Europe.2
Nord Pool's expansion plans and its operational tweaks point in the same direction: the exchange wants to be more than a Nordic clearing house. But a later start also means less overlap with the morning workflows of traders who manage both physical and financial positions. Some may welcome the change. Others will need to rework schedules that feed into portfolio balancing.3,1
The exchange has not proposed a specific new opening time, only said it is ready to discuss the option with market participants. The consultation process itself will reveal how much demand exists for the current hour, and how much of that thin 2% of volume is simply habitual rather than necessary.1
For traders, the practical risk is less about the lost hour and more about what a shift signals. If Nord Pool can move its session start, other operational parameters may also be up for discussion. The exchange's financial expansion into Europe next year will require liquidity in products that currently do not exist in depth across the continent. A day-ahead timetable adjusted for a thinner, more automated market may be a prerequisite for that growth.3,1
Watch how Norwegian hydropower participants respond in the consultation. Their supply dynamics are already distorted by flow-based pricing, and they hold the largest physical positions in the Nordic system. If they push back against a later start, the exchange may find the low-volume hour is the only part of the session where the market's biggest players actually want to trade.4,1