National energy conservation day is celebrated on December 14th in India to raise awareness about the importance of energy conservation and efficiency. It's also a day to recognize the country's achievements in energy conservation and to encourage people to adopt sustainable practices. 

Here are some reasons why energy conservation is important:

Environmental impact

Energy conservation can help reduce the environmental impact of various energy sources, such as fossil fuels and nuclear energy. 

Sustainable future

Conserving energy and embracing renewable energy can help create a sustainable future. 

Global warming

Energy use is a major contributor to global warming, which could make the planet uninhabitable. 

Energy efficiency

Energy conservation can help lower costs and reduce energy use in homes, offices, and government institutions. 

The Bureau of Energy Efficiency (BEE), an agency of the Government of India, organizes events to celebrate National Energy Conservation Day. These events include discussions, conferences, debates, workshops, and competitions. The BEE also gives out annual awards to recognize industries, buildings, and manufacturers for their achievements in energy conservation.