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carbon-intensity / methodology

Methodology for the Carbon Intensity forecast:
http://carbonintensity.org.uk/
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Something amiss with the regional/national breakdown? #1

Open hunnymonster opened 2 years ago

hunnymonster commented 2 years ago

As I type this, N Scotland is showing intensity of 8g/kWh, S Scotland 38g/kWh but Scotland as a whole 77g/kWh - logically the answer must be somewhere in between? (Nearer the 38 I'd guess from the population distribution) Am I missing something really obvious?

chrsphr commented 1 year ago

Looks like the methodology of the national and regional views is quite different. At 10am, 19th May for example on the regional view, South Scotland is importing from Northern England but Exporting to North Wales. In the National view, Scotland is importing from Wales only, and with the carbon intensity of generation in North wales being much higher than north england, Scotland gets a higher intensity than Southern and Northern Scotland individually.

I'm not an electrical engineer, but the wikipedia page for the Western Link (south scotland to north wales) implies that the link would only supply energy in one direction at a time, so one of the views is giving numbers that are more likely to be incorrect, rather than the truth being an average of the two!

But I am just an enthusiastic user of the site, hope the developers will weigh in on this