Table 2. Summary of short-listed proposals

Project construction Installed capacity Cost
Shoots barrage 1.05 GW £3.2 bn
Beachley barrage 625 MW £2.3 bn
Fleming lagoon 1.36 GW £4.0 bn
Bridgewater Bay lagoon 1.36 GW £3.8 bn
Cardiff-Weston barrage 8.64 GW £20.9 bn