...so the author of the article either missed that or is intentionally misleading us - because the article definitely gives the impression that it's half the total reduction:
> A new study estimates that the low-tech method could capture almost half the carbon the UK needs to meet its climate goals
> [...]could capture 45% percent of the carbon dioxide required to help the UK meet its 2050 net-zero targets
I'm not sure what you mean by total reduction. The reduction hasnt happened yet, so the total is unknown. But we do know what is needed, and the part you quoted seems to clearly measure the proposal in terms of what is needed, not what is presently output.