Search for information about Combined Cycle Gas Turbine and Carbon Capture and Storage to estimate the time duration for the project in the UK
you need to write about :
1-Utilise high level timelines for project development
2- Optimistic, pessimistic and most likely timelines for the phases of the project (feasibility, planning and construction)
use the link for uk gov for more info and also look for some articles
Google ccgt ccs project duration
also focus on getting a source for the project durations ,major blocks