•Data-Driven Flexibility & Optimization29 Conclusion & Strategic Recommendations37 WE HELP YOU IN EVERY STEP OFYOUR INNOVATION JOURNEYStartups inUnicorns100k+30+ 550+ Partners Serviced emerged from the vulnerabilities the crisis laid bare. The fact is, thelights went out across the Iberian Peninsula not because there wasn’tenough power, but because the grid itself couldn’t handle the strain. This was a systemic failure, pure and simple.At the heart of the collapse were a few key culprits: critically low systeminertia, the unavoidable intermittency of Spain’s impressive solar and Data-Driven Flexibility &Optimization SolutionsThis is about making the gridsmarter. By leveraging AIthrough platforms like DERMS,3 infrastructure work harder andmore efficiently. opportunity for forward-looking start-ups and investors.Plug and Play and Susten are working to close the gap. Plug and Play,a global innovation platform connecting the world’s leadingcorporations with cutting-edge startups, is helping to de-risk andaccelerate the deployment of critical technologies. Similarly, Susten focuses on early-stage European companies tackling the mostchallenging energy system pain points with scalable, commercially CREDIT:IEA Let’s be clear: the power outage on April 28, 2025, starting at 12:33CEST, wasn’t just another hiccup; it was arguably one of the most generator fumes and fires. Ultimately, this event’s scale and profoundsocietal impact underscore our critical dependence on reliableelectricity and how urgently we must address the glaringvulnerabilities within the modern power grid. little, too late. To make matters worse, the vital interconnection toFrance was in export mode that day, preventing it from supporting theIberian grid and causing local blackouts in neighboring French regions.As the instability grew, the interconnection tripped offline to protect therest of Europe, completely cutting the Iberian Peninsula adrift. WithinThe vast gap between the initial trigger and thefinal, catastrophicoutcome tells us something important: this wasn’t about a single pieceof equipment failing. It was a systemic breakdown. The grid simply 8 had fallen by two-thirds over the last decade. In a low-inertia world,any sudden power imbalance sends the frequency plummeting muchfaster (a high RoCoF, or df/dt), giving operators and control systemsprecious little time to react before disaster strikes.Making matters worse is the fact that the Iberian Peninsula is, for allintents and purposes,an “energy island”. Its connection to the rest ofEurope is shockingly small, with the capacity to France at the timerepresenting only5-6% of Spain’s peak demand, which is a far cry fromthe EU’s 15% target. This bottleneck meant that when the system beganto fail, it couldn’t draw enough stabilising power from the vast, steady inertia created a hidden vulnerability waiting for a trigger. The answerisn’t to slow down on renewables; it’s to accelerate investment in thetechnologies that make a high-renewables grid resilient, safe, andreliable. The need for investments in the grid is especially highlighted inSpain by its lowest-in-EU ratio between investments in grid andinvestments in renewables,according to Bloomberg NEF. This reframesthe entire challenge as a compelling, can’t-miss investment opportunity. Spain is standing at a true crossroads. On one side, you have one ofEurope’s most ambitious decarbonization agendas. On the other hand,you have the stark reality of a grid whose vulnerabilities were laid barefor all to see in 2025. Successfully navigating this path means looking thechallenges of a renewable-heavy system square in the eye and investingstrategically in the tools to solve them. 22-22.5 GW of energy storage. Spain has established itself as a frontrunnerin the EU’s renewable energy transition. However, this remarkable successhas brought with it new challenges in maintaining stability.The most pressing technical challenge is theinertia deficit. As we’ve seen,swapping out heavy, spinning conventional generators for lightweight, condensers or certain types of LDES, or cleverly mimic its stabilisingeffect with advanced grid-forming inverters. Notably,MITECO, theSpanish regulator, has confirmed the deployment of synchronouscondensers as the key step toward system stability. amounts of baseload power, meaning costly and mainly fossil-fueledpower plants, or a tremendous amount offlexibility from every cornerof the system: dispatchable power plants, fast-ramping storage,consumers willing to shift their demand, and strong connections toneighbors. Without these tools, the only option is to throw away cleanenergy through curtailment, a waste that theIEA warns could hit 15%Theinterconnection bottleneckjust pours salt on the wound. With onlya tiny 3 GW connection to France, Spain is severely limited in its ability to and AI-drivenflexibility absolutely paramount. CREDIT:IEA 12 market, are so important. They create a way to properly value