Green certification is a designation given to buildings, products, or processes that meet specific environmental standards aimed at reducing their environmental impact. These certifications evaluate energy efficiency, water usage, resource management, and sustainability. Common green certification systems include:

1. LEED (Leadership in Energy and Environmental Design): Focuses on sustainable building design, construction, operation, and maintenance.

2. BREEAM (Building Research Establishment Environmental Assessment Method): Assesses the sustainability performance of buildings.

3. Energy Star: Rates the energy efficiency of appliances and buildings.

4. WELL Certification: Focuses on the health and well-being of occupants in buildings.

These certifications promote eco-friendly practices and help reduce energy use, water consumption, waste, and carbon emissions, contributing to overall sustainability.