South Wales Gas Pipeline
Coordinates: 51°57′54″N 2°15′22″W / 51.965°N 2.256°W The South Wales Gas Pipeline (also known as the Milford Haven pipeline) is the UK’s largest high-pressure gas pipeline. The 197-mile (317 km) pipeline passing through Wales was built for the National Grid and links Dragon and South Hook liquid natural gas (LNG) terminals at Milford Haven, Pembrokeshire with the national gas network at Tirley, Gloucestershire.
The pipeline was expected to cost around £700 million,and was, according to the National Grid, expected to transport around 20% of the gas needed to meet UK consumption in future. Construction of the pipeline was estimated to take approximately three years, aiming to end in October 2007. Environmental controversy surrounded the decision to build it, especially through sections of the Brecon Beacons National Park where the National Park Authority called it a "huge blow". The pipeline was completed in November 2007.
Ruled a national energy security issue by the government, the pipeline's significance lies in the UK's move from being a net exporter to a net importer of energy as the North Sea oil and gas fields are used up. National Grid stated that, "The reality is that the offshore fields are decreasing in output and demand for gas from homes and businesses is growing at such a rate, that analysis shows that the UK will become increasingly dependent upon imported gas over the coming years." This depletion was predicted by Hubbert peak theory. As a result, the energy policy of the United Kingdom is likely to become an increasingly important issue and importation of liquid natural gas from the Middle East will help diversify UK energy supplies otherwise dependent on a few suppliers such as Russia.
...
Wikipedia