Fernando Alonso doesn’t often sound surprised by a regulation change. He’s seen too many of them, driven through most of them, and generally treats the sport’s constant reinvention as a problem to be solved rather than a drama to be sold.
But as Formula 1 rolls into Spa-Francorchamps in 2026, Alonso’s read on the new power unit era carries a note of genuine caution — not about set-up minutiae or tyre behaviour, but about something far more fundamental: whether the car has enough usable power across a lap when the battery story goes against you.
The 2026 engine rules’ near 50/50 split between electrical and internal combustion output has pushed energy management from “nice to have” optimisation into the centre of performance. And circuits that don’t naturally lend themselves to harvesting — long, fast, flowing layouts with limited heavy braking — expose that reality brutally. Alonso points to Spa in the same breath as Silverstone: “energy poor” tracks where the driver can quickly spend what they can’t realistically earn back.
“Silverstone and Spa, they are very thirsty on energy, and you cannot deploy in all the straights,” Alonso explained ahead of the Belgian Grand Prix. In other words, the instinctive approach — use the electrical punch on every major full-throttle section — is exactly how you end up compromised later, stranded on the wrong part of the lap with nothing left to call on.
Spa is the perfect storm for it. The lap is long, the straights are long, and the high-speed sections that make the place so iconic are also the parts that don’t give you much back in recovery terms. Eau Rouge and Raidillon are sensational, the Kemmel Straight is still the Kemmel Straight, and the run down to the Bus Stop remains a power test. None of that helps you refill the tank.
Alonso laid out what he considers the “optimal” deployment pattern at Spa — and then immediately underlined why “optimal” comes with an ugly trade-off.
“If you deploy at Spa from Turn 1 to 5, finito for the rest of the lap,” he said. The message is that early-lap indulgence is punished. You have to ration energy to ensure you’re not defenceless when it matters later.
“You need to save a little bit there to have deployment from [Turn] 14 to the Bus Stop,” Alonso continued. “But, if you deploy on those two straights, which is the optimal deployment, then there is a one-minute Sector 2 with no deployment at all.”
A whole sector effectively running on the internal combustion engine alone isn’t just a lap-time inconvenience in this ruleset — it changes the character of the car. Alonso’s bluntest point is also the one that will make engineers wince: without electrical deployment, these 2026 F1 cars can feel underpowered relative to what everyone in the paddock instinctively views as the benchmark for “quick.”
“And with no deployment at all, we cannot forget that this year we have significantly less power than last year, and less power than F2,” Alonso said. “That’s the case when you cut the deployment. So, it’s a challenge.”
That comparison is telling because Formula 2 remains non-hybrid, running a 3.4-litre Mecachrome V6 turbo in a spec Dallara chassis. Alonso isn’t claiming F2 is faster around Spa — he’s pointing out what happens when the hybrid half of a modern F1 car disappears from the equation. In the wrong window, the “F1” part can feel like it’s missing a chunk of its identity.
This is where Spa becomes more than a driver’s circuit again — it becomes a strategic circuit in the truest sense. Not strategy in the Sunday sense of undercuts and safety cars, but strategy every single lap: how you build a deployment plan that protects you against the obvious threats (overtakes on Kemmel, the drag to the Bus Stop) without leaving you dragging through the middle of the lap with a car that suddenly feels anaemic.
It also adds a new layer to racing dynamics. If multiple cars converge on similar deployment patterns — because the track almost forces them into it — then the classic Spa rhythm of “attack here, recover there” could be replaced by a more jagged, situational sort of combat. A driver who spends early to gain track position might pay for it later in ways that aren’t visible on TV until the lap unravels. Another might look passive through Turn 1 to 5, only to appear “magically” fast on the final run because they’ve banked enough to light it up when it counts.
There is a counterpoint in the paddock, too. At Silverstone, drivers had arrived braced for energy management misery, only for that fear to soften once running began. Lewis Hamilton, in particular, had expected the worst there and later suggested it wasn’t as severe as anticipated. That doesn’t make Alonso wrong — it simply highlights how narrow the margins are in this era. A slightly different recovery profile, a slightly different approach to lift-and-coast, a slightly different balance of drag versus efficiency, and what looks like an energy famine on Thursday can become manageable by Saturday.
Still, Alonso’s warning matters because it frames Spa not as a pure downforce and confidence track — as it has so often been sold — but as a place where the 2026 regulations show their teeth. If “optimal” deployment forces you into a full sector with nothing left to deploy, then the performance ceiling at Spa is no longer just about how hard you can commit through Raidillon. It’s about how cleverly you can avoid turning part of the lap into a rolling reminder that this generation of cars is only fully itself when the battery is with you.
