Analysis of information sources in references of the Wikipedia article "Super grid" in English language version.
In 1965 the first 400 kV line was inaugurated, running for 150 miles from Sundon, Bedfordshire to West Burton in the Midlands. The two new 275 kV and 400 kV systems running in parallel with each other became known as the Supergrid.
In 1965 the first 400 kV line was inaugurated, running for 150 miles from Sundon, Bedfordshire to West Burton in the Midlands. The two new 275 kV and 400 kV systems running in parallel with each other became known as the Supergrid.