£2m new diesel project underway at Power Station

Diesel 5 bed 2

Work is underway at La Collette Power Station to remove the huge concrete bed of one of the original GEC Steam Turbines, installed in 1965, in preparation for the installation of a new 5.5MW ‘black start’ Sulzer Diesel Generator. While we have scaled back some less cost effective steam generation following the completion of the 100MW Normandie 3 French supply cable in 2014, this latest addition to our standby generation plant is designed to start using compressed air and would restore full supplies to the Power Station in the unlikely event of complete blackout.

The reconditioned, 54-ton engine has been sourced by Swiss main contractors MIE from Lisbon, Portugal, and is expected in Jersey early next week. It is an eight-cylinder version of our four existing 11MW Sulzers and will be installed by the Madeira sub-contractor Vapour Ilhas who installed two of the existing Sulzers in 2012. The cost of the project is in the region of £2m.

Diesel 5 bed 1

Jersey Electricity CEO Chris Ambler said: ‘While we continue to invest heavily in our importation strategy, with another £40m power cable to France due to be laid later this year, we continue to maintain La Collette in case of emergencies. This power unit will provide additional insurance in the unlikely event of a major interruption to imported supplies and it will help us to meet our published Supply Security Standard.’

Jersey used 627 million units of electricity last year, up 1% on 2014. With two undersea supply cables now working in tandem, 94% of the total electricity used in Jersey was imported from low carbon sources in France, over a third of which was from renewable hydro sources.

Just over 1% of supplies were generated at La Collette, with the other 5% coming from the States-owned Energy from Waste Plant. The result of our importation strategy is that the annual carbon intensity of the electricity distributed in Jersey last year was at an all-time low of just 33g CO2e / kWh, 14 times cleaner than the UK electricity system, calculated at 462g CO2e/kWh*, and over seven times cleaner than local fossil fuels, with heating oil at 265g CO2e/kWh and LPG at 234g CO2e /kWh.**

*Source: Defra Carbon Factors
**Source: SAP Building Calculator as at 30 September 2015

Diesel 5 bed 3