National Grid launched £59bn HVDC supply chain framework. Six cable suppliers awarded £21.3bn contracts including LS Cable, NKT, Prysmian. Four converter suppliers got £24.6bn including Hitachi, Siemens, GE Vernova. Great Grid Upgrade overhauls transmission for renewables. Project includes 17 infrastructure builds across England and Wales. Grid needs remodel for rising clean energy demand. Upgrades enable offshore wind transfer to mainland. Framework secures global suppliers and drives efficiencies. Electrification supports net zero homes, businesses, transport. Fossil fuel grid obsolete for renewables expansion.