Flux50 Connect 2026: What Belgium's grid debate tells us about the future of forecasting

The energy sector doesn't always move fast on acknowledging hard truths. So when an entire room of Belgian grid operators, flexibility providers, EMS builders and asset managers spends a full day reaching the same conclusions, the convergence is hard to ignore. Our Product Manager Reinout Daels attended Flux50 Connect last week, and what struck him most wasn't surprise. It was recognition.

The "sunny Sunday" problem is now a structural market condition

At Amplifino, we've been tracking incompressibility risk in our forecasting models for a while. The signal has been getting louder. What Flux50 confirmed is that the broader sector now sees it the same way.

Easter Monday 2026. April 26. May 1 and several other public holidays this spring. Belgium hit extreme negative imbalance prices repeatedly and the DA floor price had to be adjusted from -500 to -600 €/MWh because the existing limit kept getting breached. Elia was transparent about it at the event: this is a recognized strategic problem, and the Summer Outlook 2026 is essentially a public acknowledgment that uncovered flexibility still exists in the system.

For anyone running renewable portfolios or managing BRP positions, none of this is abstract. These events show up directly in your P&L. The question has shifted from "could this happen?" to "how often, and are you ready when it does?"

Proactive forecasting is the difference between capturing value and watching it pass

One case study showcased on Flux50 Connect illustrated this cleanly. A flexibility provider had already forecast negative prices for solar hours before the market cleared and positioned their assets accordingly. When reactive curtailment by others tightened supply and flipped prices positive, they de-curtailed and captured the upside. Everyone else was responding to something that had already happened.

This is exactly the dynamic we build for at Amplifino. The value of a forecast isn't just accuracy in stable conditions, it's being right at the moments of highest volatility, and having that signal integrated tightly enough into operations that you can actually act on it. That gap between insight and action is where money is made or lost.

Congestion is moving from background risk to active market

Fluvius walked through the mechanics of grid congestion with a message that's becoming harder to ignore: electrification is accelerating fast enough that DSO-level flexibility is no longer a nice-to-have. Platforms like NODES are opening up commercial congestion markets, and the regulatory direction from Brussels, network codes, demand response frameworks, grid investment packages, reinforces that this trend has structural legs.

The companies building forecasting and optimization capabilities now are the ones that will be well-positioned as these markets mature. The ones waiting for the market to fully develop before investing tend to find they're already behind.

What the room confirmed

Flux50 wasn't a wake-up call for us, it was a mirror. The challenges that came up throughout the day are the same ones we work on with our clients every week: volatile imbalance prices, the operational complexity of acting on forecasts in real time, the need for models that handle extreme market conditions as well as average ones.

It's useful when an entire sector event lands on the same page. It means the conversation has moved past "is this a real problem?" and into "what are you doing about it?", which is exactly where we like to operate.

If you're rethinking your forecasting setup in light of what's happening in Belgian and European energy markets, get in touch with us and we'd be glad to have that conversation.