The British Library has received the green light for a £95m redevelopment project of its Boston Spa site in West Yorkshire.
The refurbishment will create 220km extra shelf space in a new storage facility equipped with a public viewing gallery.
An £8.5m Public Sector Decarbonisation Scheme grant to install 730 solar panels, ground source heat pump system and improve insulation has also been secured.
British Library Chief Operating Officer Phil Spence is delighted Leeds City Council approved plans for the redevelopment.
"It marks a major step forward towards transforming our presence in the north of England and creating a sustainable British Library for everyone."