The Paris Agreement is an international agreement within the United Nations Framework Convention on Climate Change (UNFCCC) that aims to limit global warming to well below 2 degrees Celsius, preferably to 1.5 degrees Celsius, compared to pre-industrial levels.

The primary goal of the European Union's Renewable Energy Directive is to increase the share of renewable energy in the EU's energy mix to 20% by 2020 and 32% by 2030.

The Investment Tax Credit (ITC) is a U.S. tax credit that provides a 30% tax credit for the cost of installing solar panels and other renewable energy systems.

A feed-in tariff is a policy mechanism that guarantees a fixed price for renewable energy, typically for a period of 20 years. This provides a stable and predictable revenue stream for renewable energy generators, making it more attractive for investors to finance renewable energy projects.

China has the highest installed capacity of solar photovoltaic (PV) systems, with over 300 gigawatts (GW) of installed capacity as of 2021.

The primary goal of the Global Wind Energy Council (GWEC) is to promote the development of wind energy worldwide. GWEC works to advocate for wind energy policies, provide technical assistance to wind energy projects, and conduct research on wind energy.

The United Nations Framework Convention on Climate Change (UNFCCC) is the international organization responsible for coordinating global efforts to combat climate change. The UNFCCC was established in 1992 and has 197 member states.

A renewable portfolio standard (RPS) is a policy mechanism that requires utilities to generate a certain percentage of their electricity from renewable energy sources, such as solar, wind, and hydropower. RPS policies are designed to promote the development of renewable energy and reduce greenhouse gas emissions.

China has the highest installed capacity of wind energy, with over 300 gigawatts (GW) of installed capacity as of 2021.

The primary goal of the International Renewable Energy Agency (IRENA) is to promote the development of renewable energy worldwide. IRENA works to advocate for renewable energy policies, provide technical assistance to renewable energy projects, and conduct research on renewable energy.

China has the highest installed capacity of hydropower, with over 300 gigawatts (GW) of installed capacity as of 2021.

The primary goal of the Clean Power Plan is to reduce greenhouse gas emissions from power plants by 32% below 2005 levels by 2030.

The United States has the highest installed capacity of geothermal energy, with over 3 gigawatts (GW) of installed capacity as of 2021.

The primary goal of the Renewable Energy and Energy Efficiency Partnership (REEEP) is to promote the development of renewable energy and energy efficiency in developing countries. REEEP works to advocate for renewable energy and energy efficiency policies, provide technical assistance to renewable energy and energy efficiency projects, and conduct research on renewable energy and energy efficiency.

China has the highest installed capacity of biomass energy, with over 200 gigawatts (GW) of installed capacity as of 2021.