Digitalization: The Key Enabler of Modern Energy Markets

In the session “Moving the Market Forward”, moderated by Radoslav Mikov, Georgios Giannopoulos focused on the digital transformation of energy trading and the technologies required to unlock value in increasingly complex electricity markets.

As energy traders manage ever more sophisticated portfolios comprising renewable generation, battery energy storage systems, demand response resources, and other flexibility assets, market participation is becoming significantly more complex. Creating value no longer depends solely on market expertise but increasingly on the ability to leverage advanced digital technologies.

Georgios highlighted the growing importance of optimization platforms, algorithmic trading, artificial intelligence, real-time forecasting, automated energy management systems, and digital decision-support tools. These technologies enable aggregators to optimize portfolio performance across multiple electricity markets while responding rapidly to continuously changing market conditions.

He also stressed that success in the evolving energy landscape requires not only cutting-edge technology but also strong partnerships across the energy ecosystem, enabling greater flexibility and maximizing the value of clean energy resources.

Driving the Energy Transition Forward

The discussions at RE-Source Southeast 2026 reinforced the importance of regional collaboration as Southeast Europe accelerates its transition towards a more sustainable, flexible, and digital electricity system.

Optimus Energy remains committed to supporting this transition through innovative market solutions, advanced optimization technologies, and the integration of new flexibility resources that strengthen power system reliability, improve market efficiency, and accelerate the deployment of renewable energy.

We would like to sincerely thank the organizers and all participants for the insightful discussions and valuable exchange of ideas. We look forward to continuing the dialogue and contributing to the next chapter of Southeast Europe’s energy transition.

Το άρθρο RE-Source Southeast 2026: Driving the future of the energy transition εμφανίστηκε πρώτα στο Optimus Energy.

Το άρθρο Optimus Energy at the MSc in Applied Physics, National and Kapodistrian University of Athens εμφανίστηκε πρώτα στο Optimus Energy.

Το άρθρο Balkan Battery Day 2026 εμφανίστηκε πρώτα στο Optimus Energy.

Bringing together perspectives from energy exchanges, aggregators, technology providers, traders, asset-management specialists and legal experts, the discussion reflected the increasingly multidisciplinary nature of flexibility. Topics across the forum included the management of RES and BESS, flexible contracts, BESS revenues and market penetration, forecasting, asset control and the transition towards increasingly dispatchable portfolios.

X Energy Exchanges 2026 brought together energy managers, power and gas traders, regulators, data analysts, and technology specialists, with sessions addressing developments in organized energy markets, the impact of technology on trading, digitalization and AI, flexibility, and energy risk management.

Optimus Energy’s participation underlined a broader shift already taking place across the sector: as renewable penetration grows and market conditions become more volatile, flexibility is moving from a complementary service to a core capability of modern energy portfolio management.

Through the integration of renewable generation, demand response and battery storage with advanced forecasting, digital infrastructure and automated optimization, Optimus Energy continues to develop the capabilities required for the next generation of energy markets.

Το άρθρο X Energy Exchanges 2026: Unlocking Flexibility εμφανίστηκε πρώτα στο Optimus Energy.

The Integration of Renewable Energy Brings New Challenges

The Greek electricity market has now entered a new stage of maturity. The continuous increase in installed renewable energy capacity has led to increasingly frequent periods of zero and negative electricity prices, as well as higher levels of renewable energy curtailment.

As Stella Zacharia explained, since renewable energy curtailments first emerged in 2023, installed solar capacity has grown significantly, fundamentally changing the operation of the power system. At the same time, phenomena that until recently were considered exceptional, such as negative electricity prices across European markets, are becoming increasingly common, placing considerable pressure producers, Aggregators, and system operators alike.

Aggregators Are Becoming More Critical Than Ever

Managing renewable energy portfolios has become increasingly complex. Accurate forecasting, continuous adjustment of market schedules, and the timely response to changing market conditions are now essential for reducing balancing costs and ensuring the reliable operation of the power system.

Through advanced Virtual Power Plant (VPP) energy management platforms, Optimus Energy has already integrated efficient remote-control capabilities, significantly improving the management of the renewable assets it represents while reducing the real-time operational burden on the Transmission System Operator.

Stella Zacharia also emphasized that every curtailment decision must be implemented with complete transparency, operational security, and fair treatment for all investors whose assets are represented within the company’s portfolios.

Battery Storage Represents the Next Critical Step

Particular emphasis was placed on the commissioning of Greece’s first large-scale Battery Energy Storage Systems (BESS). Optimus Energy has already completed all the necessary preparations to participate in both the Hellenic Energy Exchange and IPTO market platforms, while the first battery assets under its representation are finalizing integrations for commercial operation.

Energy storage is expected to provide the flexibility required by the power system by shifting surplus renewable generation from midday to periods of higher demand, reducing renewable energy curtailments and strengthening overall system stability.

Merchant BESS: Essential for Unlocking the Full Value of Energy Storage

During her speecg, Stella Zacharia stressed that the full value of energy storage will primarily come from merchant battery projects, which can operate with greater commercial flexibility across electricity markets.

By contrast, subsidy-supported battery projects operate within a specific regulatory framework that partially limits the commercial utilization of their available capacity. For this reason, accelerating the licensing and deployment of merchant storage projects is a critical step for the continued evolution of the Greek electricity market.

She further highlighted that regulatory authorities and all relevant stakeholders should prioritize the rapid advancement of merchant battery projects, enabling more of these assets to enter the power system as soon as possible and contribute meaningfully to improving system flexibility, reducing renewable energy curtailments, and enhancing the overall efficiency of electricity markets.

Optimization Across All Markets Maximizes Investment Value

The effective operation of a battery is not limited to participation in the Day-Ahead Market alone. As Stella Zacharia explained, the true economic value of a battery investment is unlocked when optimization is performed simultaneously across all available electricity markets, including the Day-Ahead Market, Intraday Market segments, and Balancing Market.

Continuously updating operating schedules, making real-time trading decisions, leveraging algorithmic optimization models, and providing ancillary services can significantly enhance both the revenues and overall performance of battery storage investments.

Technology and Expertise Are the Competitive Advantage

Managing a modern battery portfolio requires advanced technological infrastructure, continuous market monitoring, and a high level of operational readiness.

For this reason, Optimus Energy has invested in state-of-the-art optimization tools and strategic partnerships with leading European technology providers, aiming to maximize the value of the assets it represents while delivering best-in-class services to investors.

At the same time, the successful development of the energy storage market requires close cooperation among all stakeholders, including investors, market representatives, system and market operators, and authorities, to ensure that battery storage assets gain full access to all electricity markets and can deliver their full value.

Modern Energy Management Is a Strategic Competitive Advantage

Stella Zacharia also highlighted the increasingly critical role of energy management in today’s electricity markets. As renewable generation and energy storage continue to expand, the effective representation of such portfolios extends far beyond submitting market schedules; it now requires continuous risk management and real-time optimization.

As she pointed out, Aggregators are now required to make hundreds of decisions every day while simultaneously managing participation in the Day-Ahead, Intraday, and Balancing Markets, with the objective of maximizing portfolio value while minimizing exposure to imbalances and charges.

Achieving this requires the use of advanced technologies such as optimization platforms, algorithmic trading, artificial intelligence, real-time forecasting systems, and Virtual Power Plants (VPPs), which have become an integral part of modern energy companies.

Particularly for Battery Energy Storage Systems (BESS), she stressed that the financial performance of an investment depends not only on the equipment itself but also on the quality of commercial optimization and energy management. The ability to participate across all electricity markets and make real-time optimization decisions can substantially increase both the value and the revenues of a storage project.

A New Era for the Greek Electricity Market

Concluding her remarks, Stella Zacharia noted that Greece is entering a defining new chapter in its energy transition. The continued growth of renewable energy, combined with the deployment of battery storage, digitalization, and advanced optimization technologies, is laying the foundations for a more flexible, efficient, and resilient electricity system.

Optimus Energy remains committed to investing in technology, innovation, and people, actively contributing to the development of the next generation of Greek and European electricity markets.

Το άρθρο 7th Power & Gas Forum: Energy management in new age markets εμφανίστηκε πρώτα στο Optimus Energy.

Το άρθρο Η Optimus Energy στηρίζει τη Renewable EnergyTech 2026 εμφανίστηκε πρώτα στο Optimus Energy.

• • Rapid price fluctuations across Continuous Intraday, and real-time Balancing Markets
• • High weather-driven volatility impacting renewable generation
• • Grid constraints and congestion leading to curtailment
• • Everchanging regulatory and market rules

How do you turn thousands of data points, market signals, and physical constraints into coordinated, real-time action? At scale, this becomes a high-dimensional optimization problem, where thousands of variables must be processed simultaneously. The hidden layer is continuous optimization, seamless system integration, automation, and intelligence.

From Aggregation to Real-Time Orchestration

For a portfolio like Optimus Energy’s, managing flexibility means:

• • Forecasting with precision: not just predicting generation, but anticipating market conditions
• • Making real-time decisions: continuously adjusting positions as new data arrives
• • Executing automatically: ensuring trades and dispatch actions happen instantly
• • Minimizing imbalances: reducing exposure to penalties and inefficiencies
• • Aligning risk and strategy: integrating hedging, compliance, and operational constraints

This is where traditional approaches break down. Manual processes or static strategies simply cannot keep up. In a market increasingly defined by volatility and renewable penetration, traditional approaches are no longer optional.

Why BESS Changes the Game

Battery Energy Storage Systems (BESS) sit exactly at the intersection of this complexity. They are not passive assets, they are decision-driven assets. Their value depends entirely on: when they charge or discharge, which market they participate in and how. Without advanced optimization, BESS risk becoming underutilized and misaligned with market signals. With the right tools, however, they become flexibility engines, capable of absorbing excess generation responding instantly to balancing needs and capturing value across multiple markets simultaneously.

Transparency and Trust for Asset Owners

Another key pillar highlighted during the presentation was the importance of transparency for asset owners. As energy flexibility becomes commercialized in more sophisticated ways, investors and operators increasingly demand full visibility into how value is created. This means not only understanding revenue streams, but also having clear traceability of decisions, strategies, and behavior under real market conditions. The goal is ensuring that optimization is not a “black box,” but a measurable and trusted process.

Το άρθρο Montel CSEE Energy Day 2026: Optimus Energy and enspired showcase the future of flexibility εμφανίστηκε πρώτα στο Optimus Energy.

Stelios Vagropoulos, Director of Renewable Energy Sources (RES) at Optimus Energy, participated in the annual conference of the Panhellenic Federation of Photovoltaic Producers Associations (POSPHIEF). During his presentation, he highlighted the rapidly evolving dynamics of the electricity markets, the challenges arising from the intermittent and increasingly surplus generation of renewable energy, and the critical role of advanced forecasting and remote-control solutions in managing large-scale, system-critical RES portfolios, such as Optimus Energy’s portfolio, which now exceeds 4 GW.

Stelios Vagropoulos also presented the proactive measures that Optimus Energy has been implementing for more than a year, encouraging all RES plants represented by the company to connect to its Virtual Power Plant (VPP). This connectivity enables real-time monitoring, control, and optimized portfolio management, particularly during periods of zero or negative electricity prices, helping mitigate risks, improve operational efficiency, and reduce uncontrolled renewable energy curtailments.

At the same event, Optimus Energy CEO Stella Zacharia participated in a high-level panel discussion moderated by Kostas Deligiannis, alongside representatives from the Regulatory Authority for Waste, Energy and Water (RAAEY), the Independent Power Transmission Operator (IPTO), the Hellenic Electricity Distribution Network Operator (HEDNO), the Renewable Energy Sources Operator & Guarantees of Origin (DAPEEP), and the Ministry of Environment and Energy’s Committee on Energy Storage.

During the discussion, Stella Zacharia highlighted the increasing challenges associated with managing large renewable energy portfolios and emphasized the importance of secure dispatch and close coordination with the system operators. As she noted, Optimus Energy continues to invest in resilient infrastructure and technologies, building a future in which renewable energy producers can operate with confidence by entrusting the management of their assets to a modern, robust, and secure operating platform.

Reflecting on the remarks she made at the same event one year ago, Stella Zacharia noted that energy storage facilities have unfortunately not yet entered commercial operation. As a result, renewable energy curtailments have increased significantly, while periods of zero or even negative electricity prices have become more frequent. At the same time, the continuous integration of new renewable generation further intensifies these market conditions, making zero and negative prices a natural consequence of the growing supply of low-cost renewable energy.

We sincerely thank the organizers for the excellent event and for providing such a valuable forum for dialogue on the future of solar energy and the energy transition in Greece.

Το άρθρο Annual Gathering of Greek Solar Producers εμφανίστηκε πρώτα στο Optimus Energy.

From renewable growth to system flexibility

The discussion opened with a clear picture of the structural shift taking place across all power systems. Renewable energy sources now frequently dominate electricity production, with Greece ranking among the top EU countries in solar penetration. As renewable shares increase, so do system imbalances and curtailments, with projections indicating that by the end of 2025, up to 15% of renewable generation in Greece could be curtailed.

In this new reality, flexibility becomes a system-critical resource. BESS is no longer a complementary technology, but a central enabler for integrating renewables, stabilizing markets, and managing volatility.

Why BESS optimization is fundamentally complex

A key message of the presentation was that operating a grid-scale battery is far more complex than a simple charge-and-discharge strategy. Real-world BESS operation requires continuous optimization across multiple markets: Day-Ahead, Intraday, and Balancing, each with different price signals, timelines, and constraints.

Elena Kalogeropoulou emphasized that successful optimization, especially in mature markets, highly depends on:

• High-resolution forecasting and real-time decision engines
• Automated trading and 24/7 market participation
• Sophisticated state-of-charge (SoC) management
• Continuous compliance with technical limits, warranties, and regulatory rules

As electricity markets increasingly move “by the millisecond,” batteries must be operated through advanced algorithms capable of reacting instantly to changing conditions. For this reason, Optimus Energy partnered with enspired, an internationally proven provider of dynamic optimization solutions, leveraging state-of-the-art technology to ensure the optimal market participation of energy storage assets. More information about the collaboration is available here: https://www.enspired-trading.com/bess-optimization-greece

Revenue stacking: turning volatility into opportunity

One of the core themes of the presentation was revenue stacking, or the ability of BESS to generate income from multiple market layers simultaneously. This includes energy arbitrage in wholesale markets, capacity payments from ancillary services, and activated balancing energy revenues.

However, revenue stacking is not simply about accessing many markets. It requires a single, unified optimization strategy that continuously re-evaluates market conditions, regulatory constraints, and price uncertainty. Long-term revenue predictability is inherently challenging, making advanced scenario analysis and continuous re-optimization essential.

The operating framework behind the screens

The presentation provided a rare look behind the scenes of BESS operation. From real-time asset data and VPP dispatch instructions to trading platforms, optimization engines, and customer transparency, Elena outlined how multiple systems must work seamlessly together.

The integrated framework by Optimus Energy ensures:

• Full transparency for asset owners
• Real-time visibility of performance and revenues
• Robust dispatch coordination and compliance
• Secure, reliable participation across all relevant markets

Such infrastructure is a prerequisite for scaling BESS portfolios and building investor confidence.

Performance warranties as a strategic lever

A particularly impactful part of the presentation focused on performance warranties and their direct impact on revenues. Degradation-informed optimization, which accounts for battery health and cycling limits in real time, was presented as a critical factor in maximizing long-term value.

Even small shifts in parameters such as round-trip efficiency, usable SoC, or availability can translate into millions in lost or gained revenues over a project’s lifetime. Alignment between optimization strategies, commercial contracts, and OEM warranty terms is therefore not optional, but strategic.

Choosing the right commercial model

The presentation concluded with a comparison of different BESS commercial structures, including fully merchant models, tolling agreements, and floor-and-profit-sharing arrangements. Each model reflects a different balance between risk, upside potential, and revenue stability, reinforcing that there is no one-size-fits-all solution. The optimal structure depends on the asset’s technical characteristics, the owner’s risk appetite, and market conditions.

Optimus Energy demonstrated that unlocking the full value of BESS requires far more than market access. It demands deep market expertise, advanced optimization technology, robust operational frameworks, and carefully structured contracts that align incentives across all stakeholders. As renewable-dominated grids become the norm, such integrated approaches will define the successful energy storage projects that will bloom in Greece.

In case you missed it 👉 https://www.youtube.com/watch?v=naJLSFUloz4=4020s

Το άρθρο BESS focus at Athens Conference on EU Energy Law & Policy εμφανίστηκε πρώτα στο Optimus Energy.

Το άρθρο Insights from Stelios Vagropoulos at Energy Innovation Forum εμφανίστηκε πρώτα στο Optimus Energy.