LONDON–(BUSINESS WIRE)– #buildingacleanertomorrow–Terra Firma Energy (TFE), a leading owner and operator of flexible generation assets, today announces the completion of a fleet-wide programme of pre-emptive maintenance to ensure maximum availability and resilience ahead of what is expected to be a challenging winter for the UK electricity system. This announcement follows the amber cold-weather health alert issued by the UK Health Security Agency, as reported by Sky News, with temperatures forecast to fall as low as –