Disadvantages of renewable energy

As summarized on the previous page, renewable energies have many advantages, with the same or greater momentum as existing energy development such as thermal power generation.
However, renewable energies have their strengths as well as their weaknesses, just as they can cast shadows when exposed to light.
This page summarizes the disadvantages as easily as possible.

１．It is easy to make a difference in the amount of power generation depending on the environment

As a disadvantage of renewable energy, the amount of power generation is such as weather and season It is difficult to stabilize because it depends on environmental factors.。
If the weather continues to deteriorate, the power supply may be disrupted or There is a risk that the balance between supply and demand will be lost, causing a large-scale power outage.
To eliminate this disadvantage, control the balance between supply and demand Efforts are also underway to put a system called VPP (Virtual Power Plant) into practical use.

２．High power generation cost

High power generation costs are one of the factors that hinder the spread of renewable energy.
However, overseas, the cost of power generation is very low, competing with other major power sources. Even in Japan, it is not impossible to reduce the cost of generating renewable energy and use it as the main power source.
As an initiative for that, we will use the feed-in tariff system, which will be introduced later. The spread of renewable energy and the introduction of the bidding system beyond that, In addition, due to technological development and lower introduction costs due to increased demand, Efforts to reduce power generation costs need to be continued.

３．Inefficient energy conversion

Except for hydroelectric power generation, the power generation efficiency of major renewable energies such as solar power generation and wind power generation is It will be lower than thermal power generation and nuclear power generation.
Conversion efficiency of solar power generation is about 14-21%, Wind power generation is about 30% -40%, while thermal power generation is about 42-61%, Nuclear power generation is 33%, and when comparing solar power generation and thermal power generation, there is a difference of 30% to 40%.
Low energy conversion efficiency is also one of the factors that hinders the use of main power sources. It is expected that the conversion efficiency will increase as the development technology advances in the future.

summary

As you can see, renewable energy has its strengths as well as its weaknesses.
However, these problems can be steadily solved by technological advances and the introduction of new systems.
Therefore, energy development is very attractive, and I think that even if there are some problems, it will not bother you.

So far, we have summarized the energy situation and renewable energy, but in addition to the large-scale power generation that companies do, there are many ways that we can generate power immediately and easily.
I've summarized some of these examples on the next page in an easy-to-understand manner, so please take a look.

Benefits of renewable energy

Think about energy