PPsyrius
commented
1 year ago Alternatively, Climate Transparency's 2022 paper for Japan numbers which cited Enerdata might be more trustworthy.
For each kilowatt hour of electricity, 462 g of CO₂ are emitted in Japan. Emissions from power generation have dropped by around 11% since 2016, a testament to the increasing role of renewables. However, the country’s current emissions intensity is still above pre-2011 levels. - Enerdata, 2022
When did this happen?
"2023-05-05"
What zones are affected?
Hokuriku, Chugoku, Shikoku, Okinawa, Tohoku, and Hokkaido
What is the problem?
The zones mentioned above all have their carbon emission factor defaulted to 700gCO₂eq/kWh, even if many of these zones do contain nuclear and renewable energy sources.
It may be better to simply default these values for unknown sources in these regions to 2020 Japanese National Average:
In 2020, the carbon intensity of energy production in Japan amounted to almost 0.22 kilogram of carbon dioxide per kilowatt hour. The figure decreased from about 0.24 kilogram of CO2 per kilowatt hour between 2012 to 2014.Thus bringing down the number to 220gCO₂eq/kWh for Unknown data sources.