> in fairly recent years

Although this financial instrument dates from late last century, its use in energy markets is much newer, the UK began using CfDs for electricity about a decade ago.

So, yeah, if you recall conversation about wholesale electricity prices back in 2010 they wouldn't have mentioned CfDs for the same reason they didn't mention the effect of Russia's invasion of Ukraine, it hadn't happened yet. Back then renewable electricity generation schemes were subsidised very differently.