Optimus Energy participated in X Energy Exchanges 2026, on 7 May at Domus, Asteria Glyfada, bringing together leading professionals from across the European energy trading ecosystem to exchange perspectives on the transformation of energy markets, technology and the growing importance of flexibility.
Representing Optimus Energy, Elena Kalogeropoulou, Head of Flexibility, joined the conference’s dedicated forum, a session focused on the rapidly evolving role of flexible assets and contracts, including renewable energy sources (RES), battery energy storage systems (BESS) and demand-side flexibility.
X Energy Exchanges is an annual international gathering in Athens dedicated to the energy trading sector, bringing together professionals from energy exchanges, utilities, trading companies, technology providers and other key market participants from across Europe and beyond. Designed as an industry-focused meeting point for energy experts, the conference combines expert discussions on the evolution of energy and commodity markets with opportunities for knowledge exchange, networking and collaboration across the sector.
Unlocking flexibility in Greece’s energy market
In her presentation, Elena Kalogeropoulou traced Optimus Energy’s journey and explored how increasing renewable penetration, market volatility and the emergence of new flexible technologies are fundamentally changing the way energy portfolios need to be managed.
Drawing on Optimus Energy’s experience across renewable energy, demand response and battery storage, the presentation highlighted that flexibility is no longer simply a matter of placing bids in individual markets. As electricity markets become increasingly dynamic, effective portfolio management requires high-resolution forecasting, real-time decision-making, automated trading, active asset control, risk management and continuous coordination with market and system operators.
Particular emphasis was placed on the increasing complexity of real-time renewable portfolio management, including the impact of negative Day-Ahead prices and the need to continuously adapt market positions as actual production and market conditions evolve.
The presentation also addressed the growing role of BESS as a truly cross-market flexible asset. Rather than participating in a single revenue stream, batteries can combine opportunities across the Day-Ahead and Intraday wholesale markets with Balancing Market services such as aFRR and mFRR. This creates a significantly more complex optimization problem, where market opportunities must be continuously evaluated alongside physical dispatch and asset constraints.
Today, Optimus Energy is in the final stages of launching the representation of stand-alone Battery Energy Storage Systems (BESS), as its first clients prepare for their projects to enter commercial operation. The market participation of these assets in the electricity markets will be carried out in collaboration with enspired, an Austrian company specializing in the algorithmic optimization of energy assets. Through this partnership, Optimus Energy’s expertise in the Greek energy market is combined with proven cross-market optimization capabilities, enabling the dynamic participation of BESS across multiple markets and aiming to maximize their economic performance.
From energy trading to real-time optimization
A central theme of the presentation was the transition towards a new generation of energy trading intelligence.
Advanced analytics, algorithmic trading and cross-market optimization are increasingly becoming essential capabilities for managing flexible portfolios. Real-time forecasting of production and prices, machine-learning models using large-scale datasets, automated position management and the ability to translate market signals directly into physical dispatch are gradually transforming both the role of the trader and the way energy investments are commercialized in electricity markets.
For Optimus Energy, this evolution builds on an already diversified flexibility portfolio. The company represents more than 4 GW of renewable generation and over 230 MW of flexible industrial load, while expanding its activities into storage optimization and route-to-market services for BESS.
The operating model presented at the conference illustrated how renewable generation, flexible industrial demand and battery storage can increasingly be brought together through Virtual Power Plant infrastructures, advanced analytics and algorithmic optimization, creating the technological foundation for more integrated and responsive portfolio management.
Flexibility at the centre of the industry discussion
The Flexibility Forum brought together experts representing different parts of the flexibility value chain. Alongside Elena Kalogeropoulou from Optimus Energy, the session featured Maurizio Mappelli, Head of Sales Power Derivatives at EEX; Eike Arndt, Head of Business Development at emsys VPP & energy & meteo systems; Paul Mignot, Founder & CEO of Withthegrid; Martin Georgiev, Chief Operating Officer at Electrohold Trade; and Stella Mavrommati, Senior Associate, Energy & Climate Change, at CMS. The session was moderated by Gabriel Lorca Aicardi, Manager, Price Reporting EMEA Electricity Power at S&P Global.
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.
