The International Day of Clean Energy is celebrated on January 26th, designated by the United Nations General Assembly to raise awareness and mobilize action towards a just and inclusive transition to clean energy, aligning with the Sustainable Development Goals; it also marks the founding date of the International Renewable Energy Agency (IRENA) which supports countries in their clean energy transition efforts. 

Key facts about International Day of Clean Energy:

Date: January 26th 

Focus: Promoting the adoption of clean energy sources like solar, wind, geothermal, and hydropower to combat climate change and achieve sustainable development 

Goal: Encourage global collaboration on research, development, and deployment of clean energy technologies 

Relevant UN Goal: Sustainable Development Goal 7, which aims to ensure access to affordable, reliable, sustainable and modern energy for all 

Key organization involved: International Renewable Energy Agency (IRENA)