Climate & Energy

Domestic electricity demand in October 2025 was at a five-month low of 4,268 GWh. However, the country continued to maintain high export levels (245 GWh). Renewable energy sources ranked first in electricity production with 1,896 GWh, while lignite reached a three-month high with 195 GWh. In the first 10 months of 2025, we had record electricity production from gas (19,079 GWh) and record exports (1,932 GWh). However, clean energy sources (RES and big hydro) dominated with a total production of 25,306 GWh, despite RES cuts estimated at 1,837 GWh for the 10-month period.

In an article for energypress, Nikos Mantzaris, policy analyst and co-founder of The Green Tank, examines ENTSO-E data and clarifies the factors behind the drop in electricity prices in Greece on November 26, 2025.

The Green Tank participated in the public consultation launched by the Ministry of Environment and Energy on the updated National Action Plan to Combat Energy Poverty, submitting detailed comments and recommendations. The organisation recognises that the Plan moves in the right direction, combining short-term relief measures for households with longer-term interventions aimed at the structural alleviation of energy poverty. However, it highlights the need for improvements in several key areas.

The Green Tank submitted its positions to the European Commission’s public consultation on the Electrification Action Plan, emphasizing the need for a rapid, fair, and sustainable transition to clean energy.

The Green Tank submitted comments and recommendations to the public consultation on the draft law of the Hellenic Ministry of Environment and Energy regarding the capture, use, transport and storage of CO₂, as well as the related provisions for the energy market.

Greece is ranked 30th in this year’s Climate Change Performance Index (#CCPI) 2026, among 63 countries, marking an 8-place drop compared to 2025. According to the ranking published today at COP30 in Brazil, Greece remains a medium performer in greenhouse gas emissions, renewable energy, and energy use, while climate policy is once again rated as low.

The energy transition is advancing, but one crucial question remains: are the funds truly reaching citizens and investments, or do they remain on paper? In her article in Efimerida ton Syntakton, Ioanna Souka, Energy Policy Analyst at The Green Tank, sheds light on the significant delays in deploying resources from the Recovery and Resilience Facility — and the social and economic costs of these setbacks.

Domestic gas consumption reached a quarterly high in October 2025 (5.7 TWh), with Russian gas accounting for the largest share of imports for the same month (2.43 TWh). Overall, the first 10 months of 2025 saw gas demand reach record highs in power generation (40.5 TWh) and in networks (10.2 TWh). LNG ranked first in imports with 25.1 TWh (+80.6% compared to 2024), closely followed by Russian gas via Sidirokastro (23.2 TWh). Total exports for the 10-month period amounted to 5.74 TWh, with the largest share (97%) being exported via Sidirokastro.

Despite being the only region to cut emissions in 2023–2024, proposed changes to the EU #ETS2 risk increasing emissions and reducing revenues needed for the green transition. Environmental NGOs and think tanks — including The Green Tank — sent a letter to Commissioner Hoekstra.

In his article on energypress, titled “The weakening of ETS2 as a risk for the European climate strategy”, Nikos Mantzaris analyzes the recent announcement by the European Commission to consider changes to the new Emissions Trading System (ETS2) for buildings and road transport, following a request from 19 Member States, including Greece.

In the first 9 months of 2025, emissions from the power sector reached 11.65 million tons, exceeding the annual carbon budget of the NECP by 1.5 million tons. Fossil gas plants were responsible for 55%, with a record high of 6.45 million tons. Without the 9-month RES curtailments (1,785 GWh), emissions from the sector would have been 10.7 million tons (-8.1%). For September, however, emissions were limited to 1.17 million tons due to reduced total electricity production.

Montel News featured comments by Nikos Mantzaris, policy analyst and co-founder at The Green Tank, on the sharp rise in renewable energy curtailments in Greece during 2025.

Renewable energy sources (RES) took the lead in electricity generation in September 2025, with 2,464 GWh, although this represented a 16.5% decrease compared to August. Gas generation also fell to 1,719 GWh, while lignite increased (104 GWh, +39.7%). The average wholesale market price reached €92.75/MWh, up 26.8% compared to August. In the first nine months of 2025, gas generation set a record at 17,183 GWh, and exports also hit a record of 1,687 GWh. RES Curtailments reached historically high levels at 1,785 GWh for the nine-month period—more than double the amount for the same period in 2024—while lignite dropped to

In a letter addressed to 19 Environment Ministers, Climate, Net Zero and Clean Growth Commissioner Wopke Hoekstra announced on 21 October 2025 the European Commission’s intention to amend the rules governing the Market Stability Reserve (MSR). The 19 Ministers had co-signed a joint non-paper in June on price uncertainties in the new Emissions Trading System for buildings and road transport (ETS2).