These are large scale developments relating to energy, transport, water or waste (eg, airports, power stations, major roads) which require a type of consent known as a 'Development Consent Order'. The process is dealt with by the National Infrastructure Planning Unit, with the final decision resting with the Secretary of State. You can find out more about the process and how to get involved here: https://national-infrastructure-consenting.planninginspectorate.gov.uk/