British energy transmission and distribution company National Grid plc (<a href="https://www.londonstockexchange.com/stock/GRID/gresham-house-energy-storage-fund-plc/company-page" target="_blank">LON:NG</a>) today unveiled plans to invest GBP 60 billion (USD 76.5bn/EUR 70.4bn) over the five-year period till March 2029, nearly double the prior five years.