In 2025, wind and solar generated 30 percent of the European Union’s electricity for the first time, edging past fossil fuels. Battery capacity increased 45 percent year on year, with utility-scale systems driving most new additions. These are significant industry milestones. But for operators on the ground, the conversation has shifted. Variability is no longer an exception; it is the operating environment. Much like an orchestra, Europe’s energy transition now depends less on adding instruments and more on how well they are coordinated.
When variability becomes the operating environment
The coordination challenge is visible across Europe, where operators must increasingly optimise renewables, dispatch for immediate needs while considering pricing signals, grid stability and evolving regulations, alongside longer-term implications. In practice, this means decisions are no longer local or linear. A dispatch choice made for one asset now has portfolio, market and regulatory implications within minutes.
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This is especially clear in southern and south-eastern Europe, where solar-heavy markets such as Spain, Italy and Greece are seeing more frequent periods of oversupply, reflected in rapidly growing solar generation shares and increasing curtailment, while newer balancing and trading mechanisms continue to evolve across the Balkans and the wider region to manage cross-border flows and flexibility needs. In these markets, curtailment is no longer a rare event; it is becoming embedded in operating assumptions. At the same time, cross-border balancing arrangements across the Balkans are maturing, creating both opportunity and additional layers of coordination.
The International Energy Agency (IEA) estimates that grid congestion cost the EU over €3.8 billion in 2024 and that renewable curtailment exceeded 10 TWh that same year, enough to power almost three million homes. As well as greater variance between forecast and realised revenue, curtailment has other costs, including more time spent deciphering market dynamics and increased resources required to manage stop-start operations. These figures are significant at system level. For operators, they represent lost dispatch hours, compressed margins and growing exposure to revenue volatility.
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Price signals are reinforcing the same message. In 2024, Europe recorded 7,841 hours of negative wholesale electricity prices in the first eight months of the year, as solar and wind output outpaced the ability of grids and markets to absorb surplus power. Negative prices are not simply a symptom of success in renewable deployment; they are evidence that coordination between generation, storage and market participation has not kept pace with capacity growth. They are a reminder that the core question is shifting from “How much did we generate?” to “How was it generated, stored and managed?”
Flexibility meets complexity
Batteries are one of the most significant new instruments in this orchestra and help operators manage variability, but they come with their own complexities. Battery operation requires a balance between cycling, degradation, dispatch and market participation across multiple time horizons, from seconds to hours and years. A dispatch decision can protect asset life or accelerate degradation; a maintenance decision can improve availability or reduce optionality at times when flexibility is most valuable.
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Storage adds significant opportunity, but it also raises the operational bar. Without coordination, flexibility can become another source of complexity rather than a solution. Regulation is pushing these decisions closer to real time, underlining the need for operators to align more closely with the market. Under the EU electricity market design reform, the intraday cross-zonal gate closure time for trading should be no more than 30 minutes ahead of real time from 1 January 2026, with defined derogation pathways. This is not simply a compliance change; it is a commercial shift that rewards operators who can respond with speed, confidence and discipline across their portfolios.
Orchestration as a core capability
In any orchestra, the instruments are not the problem. The difference between noise and performance lies in how well they are coordinated, moment by moment, against a shared score. The same is now true for renewables. Orchestration is not about adding another dashboard, but about bringing together real-time insight and long-term planning to maximise flexibility and profitability.
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In this model, the operator is the conductor. The portfolio is the orchestra. Technology provides the shared visibility and decision structure needed for coordinated performance. What we increasingly see across hybrid portfolios is not a lack of capability, but a lack of connection between decisions. Assets are often well managed individually. The challenge emerges where operational, maintenance and market decisions intersect.
That shift begins with visibility. Not site-level dashboards in isolation, but a unified view across solar, wind and storage assets, often spread across regions and governed by different OEM logic. Without that clarity, operators are effectively conducting without being able to hear the full orchestra. From there, visibility must evolve into foresight. Renewable underperformance is rarely a single dramatic failure; it is more often a pattern of drift, constraint or missed early warnings that compound over time. The ability to translate SCADA and sensor data into forward-looking insight changes the quality of decision-making, moving teams from reaction to anticipation.
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Execution is where coordination becomes visible. Hybrid operations are defined by trade-offs: availability versus cycling, curtailment versus charging, response speed versus asset health. Decisions that look rational at asset level can erode value at portfolio level if they are not aligned. Orchestration means acting deliberately, with full awareness of system-wide consequences.
Finally, coordination must extend into market participation. The value pool is fragmented across day-ahead, intraday and ancillary services, while compliance expectations are increasing. Monetisation is not simply about trading faster. It is about ensuring that bidding and dispatch strategies reflect what assets can realistically deliver, balancing performance, degradation and system constraints. When these elements move together, volatility becomes manageable rather than destabilising. When they remain separate, complexity compounds.
Conducting the next phase of renewables
As Europe’s energy mix continues to evolve, success will be defined less by asset scale and more by orchestration capability. Operators that combine visibility, foresight and coordinated execution will be best positioned to navigate volatility, unlock flexibility value and support a resilient, responsive grid.
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Technology has a clear role to play here. In this context, platforms such as OnePact can support the shared visibility and structured decision-making that hybrid portfolios now require. But technology alone does not conduct the orchestra; operators do. Europe has added the instruments. Performance now depends on how deliberately they are brought together. (Remi Ramcharan/hcn)
