Ask the Flexperts | Episode 4: Romanian & Bulgarian Flexibility Markets with Filippos Falieros

Ask the Flexperts | Episode 4: Romanian & Bulgarian Flexibility Markets with Filippos Falieros

by Aurora Energy Research

Applied Sciences & Engineering Economics & Finance KNBEnergy industries and utilitiesKNBLElectrical power generation and distribution industries
🎙 Aurora Energy Research 👥 2K 📅 July 14, 2026 ⏱ 15 min 👁 141 📄 expert opinion 🧭 2026-08-16
Available in: English (current) Français

Keywords

battery storagearbitragebalancing marketssubsidiesco-location

Summary

In this episode of Ask the Flexperts, Eva Zimmermann interviews Filippos Falieros from Aurora Energy Research about the battery storage markets in Romania and Bulgaria. They discuss the different drivers: Romania is driven by balancing markets and improving regulation, while Bulgaria relies on arbitrage and a large subsidy scheme (RESTORE). The conversation covers the risk of cannibalization, with Bulgaria facing it sooner due to its smaller market and faster deployment. They also explore the potential of co-location with solar to improve IRR, the role of tolling and hybrid PPAs in de-risking projects, and the grid constraints in each country. The episode concludes with key takeaways for investors, highlighting the trade-off between Romania’s diversified upside and Bulgaria’s faster but riskier deployment.

120 words

Critical Evaluation

Value of the Information & Strength of the Argument

The video provides valuable insights into two emerging battery storage markets, offering specific data on subsidy schemes (RESTORE and RESTORE 2) and market dynamics. The argumentation is solid, based on Aurora’s modeling and expert experience, but it lacks external validation and is somewhat promotional for their software Chronos.

Scientific Rigor, Source Quality, Title Accuracy

The scientific rigor is moderate; the content is based on expert opinion and internal modeling, with no external sources cited. The title accurately reflects the content, and the video is well-structured with clear chapters. No public comments were provided for analysis.

104 words

Title / Content Match

The title accurately reflects the content, which is a discussion on flexibility markets in Romania and Bulgaria.

Quality & Reliability

8/10

The video features an expert from a recognized energy research firm, providing data-driven insights and referencing specific subsidy schemes and market dynamics. However, it is largely based on expert opinion and internal modeling, with no external citations or peer-reviewed sources.

Chapters

Cited Sources

Concurring Sources

Contribution & Novelties

The video offers a comparative analysis of two neighboring markets with distinct drivers, providing actionable insights for investors. It highlights the importance of co-location and contracting strategies.

Pour aller plus loin :

  • Battery storage — Overview of battery storage technology and applications.
  • Electricity market — Context on how electricity markets function, including arbitrage and balancing.
  • Renewable energy in Bulgaria — Background on Bulgaria’s renewable energy landscape.

66 words

Radar Profile

The radar profile shows high scores in information quantity and quality, with moderate technical depth and reliability. This indicates a well-informed discussion but with room for more rigorous sourcing.

Reliability 7/10