Which energy sources supply the most energy in Japan?

In this study an interconnected Japanese electricity system in which solar PV and offshore wind supply most energy, and dispatchable generation sources (existing hydro, existing bio energy, and new hydrogen) and pumped hydro energy storage provide the balance is modelled.

Does Japan have more solar and offshore wind resources?

This study shows that Japan has 14 times more solar and offshore wind resources than needed to supply 100% renewable electricity and vast capacity for off-river pumped hydro energy storage.

Should Japan invest in solar & wind?

The Japanese government’s Clean Energy Strategy Interim Report lacks clear recognition of the crucial role of solar and wind in global decarbonization and, instead, it promotes nuclear energy, imported hydrogen and carbon capture and storage (CCS). This is unlikely to be a good choice.

How much solar PV & wind should a Japanese electricity system use?

Tsuchiya modelled a Japanese electricity system dominated by solar PV and wind targeting projected electricity demand in 2050, and found that the optimal system configuration would require 75% solar PV and 25% wind to minimize the required battery storage and the mismatch between generation and demand .

What is the market size of wind energy generation in Japan?

The overall market size of wind energy generation in Japan is growing. The cumulative power generation capacity from wind energy was 5,213,000 kW at the end of 2023, with 2,626 installed units.

How much does solar power cost in Japan?

It is found that Japan has sufficient solar PV, wind, and pumped hydro potential to support 100% renewable electricity and even 100% renewable energy. Importantly, a wide range of scenarios yield costs in the range US$86–110/MWh which are competitive with current spot prices.