[Data Issue]: JP-CB solar values

[pierresegonne]

When did this happen?

It happens everyday

What zones are affected?

JP-CB

What is the problem?

The solar values are suspiciously high.

TL;DR: Anyone familiar with the Japanese grid to help determine whether reported solar production is realistic?

We can see that the total solar output can reach up to 9GW of power.

This data comes directly from the source: see csv file we parse (production data for solar starts on row~55, and is the last column 太陽光発電実績(５分間隔値)(万kW). It is supposed to be reported in 10,000kW = 10MW juyo_cepco003.csv

That data is consistent with yearly values we see from the TSO, colum 太陽光（実績）, where units are MW: 2023_areabalance_current_term.csv

In that yearly reporting, the total consumption is even consistent with the sum of all productions + exchanges.

What is suspicious is that there are no reports of solar power plants in that area of that scale.

Their targets state that they want 57MW by 2022 (how does that sum up to 3290MW one could ask) - but that includes all owned, maintained, constructed assets by Chubu Electric Power Group, which does not only act as a TSO.

Then their ESG report states that they own 20MW of solar

Some reports say that other IPP are installing PV capacity in Chubu: https://www.businesswire.com/news/home/20230201005451/en/TotalEnergies-Starts-Up-its-Fourth-Solar-Power-Plant-in-Japan but the numbers are not even close to what's reported.

[pierresegonne]

Note the disclaimer was updated to reflect this issue here

[qwjhvbxi]

I think the numbers in the first slide don't add up because the numbers 57, 21, etc. likely refer to 万kW = 10MW, so they are actually 570MW, 210MW, etc. As for the low numbers, I think the slides are just too old. The Japanese utilities have a history of grossly underestimating the growth of renewables. Those slides look to be from 2017, which would explain the ridiculously low targets. I don't have the numbers to confirm it, but that solar power looks realistic to me. The Chubu area has 23 million people, so it's not small.