The "energy storage + renewable energy" model can represent the future of the development of the energy industry

According to the International Renewable Energy Agency's 2014 Renewable Energy Generation Costs, the cost of renewable energy generation may fall to the same level or even lower than the cost of fossil fuel power generation
.
More importantly, unlike traditional energy sources, renewable energy technologies are still in a stage of rapid progress, and costs will continue to decrease
in the future.
The independent microgrid of "energy storage + renewable energy" represents the development of the energy industry and the future of
human energy supply and demand.

However, renewable energy also has inherent defects, wind and solar energy are volatile and intermittent, large-scale access to the grid will affect the stability and security of the power grid, greatly increasing the cost
of the grid.
Therefore, it can be said that the main factor restricting the large-scale development of renewable energy is not the cost of power generation, but the acceptance capacity of the power grid and the cost of the power grid, and energy storage technology is the key
to solving this problem.

The energy storage technology commonly discussed generally refers to power storage, that is, storing electrical energy through certain physical and chemical means
.
Simply summarized, in the specific application of future energy storage technology, there can be three modes: the first is "energy storage + large grid", that is, users can store electricity when the electricity price is low and power supply by the energy storage system when the electricity price is high
.
The second mode is to rely on "energy storage + renewable energy" to establish an independent microgrid, which operates separately from the grid
.
The microgrid can also be connected to the grid to operate, which is the third model that is often seen in reality, namely "energy storage + renewable energy + large grid"
.