Today, there is a discussion about carbon emissions per kilowatt-hour of energy. There are many kinds of energy sources, and their carbon emissions per kilowatt-hour vary.

If you look at thermal power, coal is burned as electricity. In the process, carbon escapes from the atmosphere in the form of carbon dioxide, so the carbon emissions per kilowatt-hour of thermal power are quite high. When coal is rich in carbon, when it is burned, carbon is turned into exhaust gas, resulting in large carbon emissions.

As for hydropower, generating electricity by the drop of water, there is no combustion, and there is almost no carbon emission. Water flows naturally, drives the unit, and in the energy conversion room, no carbon participates in the reaction, which is clean and low-carbon.

The same is true for wind power. The wind-driven impeller produces electricity with a generator. It is purely mechanical energy to electricity, and has no carbon emissions. It is a green energy source.

Photovoltaics use photovoltaic effect to convert light energy into electricity. There is no chemical change involving carbon elements, and carbon emissions are also small.

To reduce carbon emissions, we should widely promote hydropower, wind power, and photovoltaics, and use less high-carbon energy sources such as thermal power. This is of great benefit to the protection of the environment and the stability of the climate. All parties should work together to promote clean energy and reduce carbon emissions per unit kilowatt-hour to protect the mountains and rivers.