［ our ideas and philosophy］

１．The idea (philosophy) that WEO promotes is that renewable energy is the most important
　power source, and that all energy sources should be replaced. We are convinced that for
　future generations, 3E (harmony of environment, energy and economy) being in line with the
　SDGs (Sustainable Development Goals) movement, and also with the promotion of urgent
　themes advocated by “Donut Economics” are very important.

２．Although the theory of depart from nuclear power generation is correct, there is no
　explanation of the facts and prospects supported by the numbers. In the WEO, in the 135th
　study session regime, ” Estimation of replacing nuclear power plants with solar power ”
　shows that Fukushima nuclear power plant and its surrounding area can be replaced in terms
　 of area and cost.

３．Furthermore, the 135th study session regime showed that the drawbacks of fluctuating
　output such as solar power and wind power could be solved in various ways. There is
psychological resistance to preferentially accepting fluctuating energy sources, but current
technology is sufficient. For example, the utilization of existing pumped storage power plants,
natural gas-fired power plants (especially existing GTCC = gas turbine combined cycle power
generation, etc.) today can contribute to fluctuation absorption along with advances in local
weather prediction technology.

４．If we look the new technology, things seem much better to incorporate them in the
current technologies. By incorporating EV batteries, into smart grids in each region, it will
provide inexpensive means of absorbing fluctuations and help to balance supply and
demand. In addition to the reuse of EV batteries and their used products, the reuse and
recycling of current automotive lead-acid batteries can provide inexpensive means of
absorbing fluctuations. If we overlook the world, generating electricity in places with high
annual solar radiation, producing hydrogen by electrolysis of water, and combining it with
carbon to produce hydrocarbon-based liquid fuels (such as Solar Fuel) or by combining it
with nitrogen and transporting it as an ammonia fuel by tanker, stable energy storage and
its transport system are accomplished.

５．As FIT has surprisingly increased the installation amount and reduced cost, and the solar
power is becoming an important power source. However, in order to suppress the
temperature to 1.5 ° C or less (*) advocated by the IPCC, we need to drive the growth. In
particular, the increase in wind power in Japan is behind the world and needs to be hurried.
It is possible to make Japan a world-class technology-oriented country again with the system
that realizes supply and demand control by combining with building an optimal grid for each
region, including not only solar and wind power but also small hydropower and biomass.

[Supplementary explanation]

A statement from the President of WEO (January 20, 2015) showed that in 2030, all of Japan’s electricity could be renewables. Realization will require a change in government policy, but as of 2019 the move is scarce and will need to be done on a local government or enterprise basis. Since it will take time to do so, the roadmap shown has been updated the target slightly so that it could be possible to achieve 90% in 2030 and 100% in 2035.Renewable energy is currently dominated by photovoltaic power generation in Japan, and even if wind power generation, which is dominant in the world, grows significantly in the future, both have the weakness of severe fluctuations in output, but their leveling remains combining both existing and new technologies showed that they could be solved in various ways. By incorporating EV (electric vehicle) batteries, which should be spread as a new technology, into smart grids in each region, inexpensive means of absorbing fluctuations can be used, and this will also help balance supply and demand. Assuming that the spread of EVs is about 30% in 2030 mainly in urban areas, and that about 30% of them are parked and linked to the grid, about 6 million EV batteries can either be charged or discharged. If you are on standby and multiply by 15 kWh, you will be able to provide 100 million kWh with the aid of AI without any significant investment.For leveling, it is more effective if we utilize ocean current power generation (Kuroshio power generation), geothermal power generation, small hydro power generation, and part of biomass power generation.Ultimately, even with fluctuating renewable energy, water is electrolyzed in places with good weather conditions around the world, and the generated hydrogen and CO2 are chemically reacted into hydrocarbon-based liquid fuels (including Solar Fuel). By storing and transporting this, fossil fuels can be replaced, and this method can also make significant use of the current petrochemical industry infrastructure.
In Japan, there is no roadmap (time schedule) to achieve speeds comparable to those of Europe and the United States, so this time we propose a roadmap up to 2030.