Main modes of china renewable energy storage products

It is well known that renewable energy from solar panels and wind power and wind turbines is not always available and will not provide excess energy when demand is low. Therefore, in order to reduce the impact of inconsistent china renewable energy storage products generation, scientists and engineers are developing methods to store residual energy.

Here are six best ways to china renewable energy storage products.

1. Battery is the main way of china renewable energy storage products

Batteries are probably the most common way to china renewable energy storage products, and they are used in all electronic devices, from smartphones to cars. Lithium ion battery is a common type, which is used for small equipment and accounts for more than 90% of battery storage in the global power grid.

The working principle of the battery is to connect the negative end of the battery to the electrode called anode, and connect the positive end to another electrode called cathode. The electrolyte (liquid material with charged ions in the battery) combines with the electrode to produce a chemical reaction and generate current. According to the US Department of Energy, the anode and cathode store lithium in lithium-ion batteries. The electrolyte carries positively charged lithium ions from the anode to the cathode to provide power for battery charging, and vice versa. The same process can be accomplished using china renewable energy storage products.

The efficiency of lithium ion battery will be reduced, and it is more likely to fail over time; In addition, because it is difficult to extract the raw materials harmful to the environment needed for their manufacture, the cost of manufacturing them is high. According to the 2020 report of the World Energy Council, these batteries will not retain all energy, and their efficiency ranges from 85% to 95%.

2. The main way of china renewable energy storage products is pumped storage hydropower

The pumped storage system is built on or beside rivers together with hydropower, or uses sea water, such as the pumped storage system in Okinawa, Japan, where sea water is pumped from the sea and transported through pipelines. The system then restarts the water through the tubes to power the turbine and generate electricity.

3. The main way of china renewable energy storage products is pumped thermal energy storage

Pumped thermal energy storage includes using electricity generated from renewable energy to heat gravel or other easily prepared and readily available materials, and then storing the heat in insulated tanks to generate electricity when needed. The electric efficiency of pumped heat storage ranges from 50% to 70%.

4. The main way of china renewable energy storage products is gravity energy storage

A British company called Gravity is developing technology to make full use of gravity. The technology uses electricity to lift heavy objects on the crane so that they can be released later to modify the generator and restore most of the power used to lift it. According to the same company, the efficiency of this technology is estimated to be 80% to 90%.

5. Compressed air energy storage is the main way of china renewable energy storage products

The compressed air energy storage system pumps air into the basement to increase pressure so that it can be started up as required to run the gas turbine. It is not recommended to generate energy by burning natural gas in high-pressure air, as it will cause carbon dioxide emissions.

6. Hydrogen storage as the main method of china renewable energy storage products

Hydrogen is used to store chemical energy and convert electric energy into hydrogen through a process called electrolysis, which is to decompose water into hydrogen and oxygen components, and then store hydrogen as fuel for generating electricity or operating hydrogen compounds, thereby reducing greenhouse gas emissions.

According to the 2020 report of the World Energy Council, the efficiency of this technology in china renewable energy storage products is between 35% and 55%. But hydrogen fuel cells are very expensive because they require expensive materials, such as platinum.