He added: “The Eden Sessions have always been about creating unforgettable moments in an extraordinary place, and we’re thrilled to share the full sessions line-up complete with star-studded special guests.”
The 150th session will welcome back indie-pop band Bastille.
The band previously played at the Eden Project in 2017, with coverage later broadcast on BBC Four as part of the Live at Eden series.
Organisers said signing with AEG Presents – a global live events company – in 2019, was a “pivotal moment” in the history of the event, enabling the “booking of more major artists”.
Other artists include MEEK, who will join Mika and the Maccabees, while rock group American Hi-Fi will join Bowling for Soup and Frank Turner & the Sleeping Souls.
Other special guests joining this year’s line-up include British singer-songwriter Alfie Templeman and alt-rock group Everything Everything.
They will be joined by five guests including Sunderland-based Tom A. Smith and Texas-born, Devon-based Tummyache.