Carbon credit, also known as carbon right, means that under the conditions of certification by the United Nations or a United Nations-recognized emission reduction organization, a country or enterprise reduces carbon emissions by increasing energy use efficiency, reducing pollution or reducing development, so that it can enter the carbon trading market. A unit of carbon emissions measurement, one carbon credit is equivalent to one ton of carbon dioxide emissions. The carbon emissions of a coal-fired power plant last year exceeded the standard. According to the above definition, the corresponding practice of the power plant does not include:. ['Relocate the plant from the suburbs of the city to the seafood side.', 'Reduce the total power generation of the plant throughout the year.', 'Improve equipment to improve heat source conversion efficiency.', 'Buy carbon credits to achieve emissions standards.']