The Greek Ministry Of Environment And Energy Has Launched A Tender For Energy Storage Power Plants

The Greek Ministry of Environment and Energy has launched a tender for energy storage power plants to stabilize the renewable energy market environment in 2026.

 

2025 was a year of significant challenges for the renewable energy sector in Greece, marking the first time power generators experienced curtailment at the behest of the Greek Independent Transmission Operator (ITO) and the Greek Electricity Market Operator (GEMO). The shutdown of photovoltaic (PV) power plants during specific periods resulted in zero generation and zero revenue, creating a high-pressure and unstable operating environment.

 

 

 

In the same year, particularly during the critical summer period for PV power generation, the electricity market experienced several instances of zero or even negative electricity prices. This meant that many renewable energy projects-even those generating electricity normally-could not generate revenue after grid connection and even incurred losses. Solar panels without battery storage highlighted the limitations of the existing system, as excess production could not be effectively managed, underscoring the urgent need for substantial intervention.

 

Power plant batteries and large-scale national grid battery storage solutions emerged as critical tools to address these issues. Technologies like vanadium in batteries (such as vanadium redox flow batteries) offer advantages for long-duration, grid-scale applications due to their durability, safety, and minimal degradation over thousands of cycles, making them suitable for stabilizing the grid and supporting renewable integration.

 

Storing mechanical energy (e.g., through pumped hydro) also remains relevant in Greece's broader strategy, but the focus in 2025 shifted heavily toward electrochemical options like battery energy storage systems (BESS). Companies such as BLOOPOWER provide advanced LiFePO4-based solutions, including rack-mounted and containerized systems for both residential and commercial/industrial use, which can pair effectively with solar to enhance self-consumption and flexibility.

 

 

 

At the end of 2025, the Greek Ministry of Environment and Energy announced the launch of a tender for final grid connection of energy storage power plants. The operation of these energy storage systems is expected to significantly alleviate overcapacity generation, price volatility, and curtailment, improving energy consumption and utilization efficiency. The industry anticipates that new energy storage power plants will be operational in 2026, creating a more stable, predictable, and healthy development environment for renewable energy, thereby supporting investment confidence and the country's sustainable energy transition.