The Energy Community is established, supporting Southeast Europe in adopting EU energy legislation, improving energy security, reducing environmental impacts, and integrating into the broader European energy market.

The Balkan Renewable Energy Program (BREP) is established to promote renewable energy markets of in the Western Balkans, initially with the participation of Albania, Bosnia and Herzegovina, and North Macedonia.

The World Bank and international organizations stress the importance of carbon pricing and markets to help the Western Balkans transition to low-carbon economies and integrate into broader European carbon frameworks.

The Balkan Renewable Energy Program, BREP, expands to also cover the rest of the Western Balkan countries, including Kosovo, Montenegro, and Serbia.

The Regional Energy Efficiency Programme (REEP/REEP Plus) is launched, aiming to improve energy efficiency and promote the use of renewable energy sources in the Western Balkans.

The inaugural EU-Western Balkans summit is held in Berlin, marking the launch of the Berlin Process, which aims to enhance regional cooperation and support the integration of Western Balkan countries into the European Union.

The second EU-Western Balkans summit is held in Vienna, focused primarily on regional cooperation, economic development and energy connectivity.

The same year, the Western Balkan countries commit to climate action by signing the Paris Agreement at COP21.

The third EU-Western Balkans summit held in Paris announced key energy efficiency initiatives to bolster the region's commitment to sustainability and economic integration with the EU.

The Paris Agreement is ratified by the Western Balkan countries, committing to submit Nationally Determined Contributions (NDCs).

During the fourth EU-Western Balkans summit held in Trieste, Italy, the EC announced additional financing of €48 million to boost entrepreneurial capacity in the region.

At the fifth EU-Western Balkans summit in London, a new guarantee instrument aiming to leverage up to €1 billion in investments is announced under the WBIF.

The Western Balkan countries submit their initial Nationally Determined Contributions (NDCs), outlining their climate action targets and strategies.

The European Commission proposes the Carbon Border Adjustment Mechanism (CBAM).

The first Law on Climate Change enters into force in Montenegro, highlighting a set of climate policies, including a GHG inventory and a national system for monitoring, reporting, and verification (MRV).

Montenegro’s regulation on emissions trading enters into force, launching preparations for a national ETS.

The European Commission adopts the Economic and Investment Plan for the Western Balkans, allocating up to €9 billion for the region's green transition, including significant funding for carbon reduction projects.

During the seventh EU-Western Balkans Summit in Sofia, the leaders’ declaration endorses the Green Agenda for the Western Balkans, promoting sustainable development, reducing pollution, and transitioning the region to a low-carbon economy.

Serbia adopts its first Law on Climate Change, which includes a system for monitoring, reporting, and verification (MRV) of GHG emissions.

The eighth EU-Western Balkans Summit in Berlin highlights the EU’s support for the region through the Economic and Investment Plan, which includes substantial investments in green and digital transitions.

Albania becomes the second Western Balkans country to submit its draft NECP.

The EC announces a €3.2 billion investment package in the Western Balkans to support 21 flagship projects in transport, digital, climate, and energy connectivity.

The ninth EU-Western Balkans Summit in Berlin saw the endorsement of the “Declaration on Energy Security and Green Transition”, including a substantial €1 billion energy support package.

The EU adopts Regulation (EU) 2023/956, introducing the Carbon Border Adjustment Mechanism (CBAM).

Western Balkan leaders attend the tenth EU-Western Balkans Summit in Tirana, reaffirming their commitment to the Paris Agreement. This marked the first summit held in a Western Balkan state.

The European Commission announces a €680 million investment package, for five flagship investments in rail transport and renewable energy in the Western Balkans.

Kosovo introduces its first comprehensive Law on Climate Change, introducing a legal framework for planning and implementing climate change policies.

A €1.2 billion investment package is approved to support eight new flagship investments under the EIP for the Western Balkans, focusing on environment and climate, sustainable transport, and business sector support.

The Western Balkans countries set the goal to integrate carbon pricing mechanisms, crucial for the CBAM.

 The full CBAM enters into force.