As Europe accelerates its energy transition, market design is evolving to better reflect the realities of a grid increasingly reliant on intermittent renewables and flexible demand. One of the most impactful changes coming in 2025 is the continent-wide shift to a 15-minute day-ahead power trading interval, replacing the traditional 1-hour blocks across most European markets for a new 15-minute Market Time Unit (MTU) in the Single Day Ahead Coupling (SDAC). While this change was initially expected in June 11, 2025, it is now scheduled to take effect on September 30, 2025.  

Portugal and Spain, via their joint market OMIE, were among the early movers, transitioning to a 15-minute granularity in early 2025. But now, the rest of Europe is preparing to follow suit, with countries like Germany, France, and others aligning with the EU's target model for intraday markets and closer-to-real-time balancing. This change is not just a regulatory update — it’s a structural transformation of how electricity markets operate. Recent unplanned blackouts in Spain in April have drawn attention to the challenges of operating a rapidly evolving grid. While investigations into the exact causes are ongoing, these events have highlighted the critical importance of operational transparency, system flexibility, and accurate load forecasting.

For energy traders, asset operators, and utilities across Europe, the upcoming market changes introduce both greater complexity and greater opportunity. They require more precise forecasting, faster decision-making, and tools capable of operating at the same temporal resolution as the market itself. As trading intervals shorten and volatility increases, forecasts must keep pace — yet many traditional forecasting solutions are struggling to meet the speed and precision these evolving markets demand.

How Amperon Helps You Win in the New Market Structure

Amperon is already prepared to deliver 15-minute forecasts for both load and grid-scale renewables across European markets. With a proven track record supporting the Iberian OMIE transition and the existing sub-hourly market structure in Great Britain, Amperon has expanded 15-minute granularity support to eight additional markets across the continent including France, Germany, Netherlands, Belgium, Denmark, Italy, Austria, and Switzerland.  

Our forecasting platform is built for the demands of Europe’s evolving power market, offering market participants a powerful edge in sub-hourly operations and trading:

• Manage Imbalances More Effectively: Amperon’s sub-hourly load and net demand forecasts help traders and utilities track system trends in real time, allowing them to better shape their consumption and generation ramps, manage balancing responsibilities, and reduce exposure to imbalance costs.

• Stay Ahead in Intraday Trading: Amperon’s sub-hourly granularity provides a distinct edge by enabling participants to capitalize on pricing inefficiencies and volatility windows with 15-minute forecasts to make better-informed trading and hedging decisions.

• Optimize Renewables and Flexible Load: Whether operating variable renewables or flexible assets like batteries and demand response, market participants need granular visibility into system conditions. Amperon’s sub-hourly assets and grid-level forecasts support renewables participants in ancillary services (aFRR, mFRR) and help identify optimal dispatch windows for flexible assets using high-resolution net demand forecasts.  

Staying Ahead of Market Changes

With the 15-minute transition now set for September 30, 2025, Amperon stands ready to help market participants across Europe navigate, adapt, and lead in this next phase of the continent’s energy market evolution.