<P> The SSE Hydro is a multi-purpose indoor arena located within the Scottish Event Campus in Glasgow, Scotland . The arena was initially named The Hydro after its main sponsor, energy company Scottish & Southern Energy subsidiary Scottish Hydro . The company then re-branded itself and its subsidiary companies as SSE, however the Hydro name was retained despite it no longer being a trading name . The arena was designed by the London - based architects Foster + Partners and officially opened on 30 September 2013, with a concert by Rod Stewart . </P> <P> Within 3 years of opening, the SSE Hydro became the eighth - busiest venue worldwide . The arena handled 751,487 ticket sales making it the eighth - busiest music arena in the world in terms of ticket sales . It also hosted the UFC's first event in Scotland--an event which was impossible to hold in any other arena in the country . </P> <P> The SECC identified the need for a new arena in which sports and other public events could be held . Previously, such events were held in Concert Hall 4, in the SECC main building . However, the SECC audience capacity is limited, seating just over 10,000 . Therefore, it is unable to accommodate the high attendance typically associated with large - scale performance events, such as rock concerts and children's shows . The new SSE Hydro arena is located adjacent to the SEC Centre and the SEC Armadillo and hosts international musical stars, global entertainment and sporting events; with a capacity of 13,000 and aims to attract one million visitors each year . </P> <Table> World's Busiest Arenas--2017 <Tr> <Th> Venue </Th> <Th> 2017 Ticket sales for concerts / shows </Th> </Tr> <Tr> <Td> The O2 Arena, London, England, UK </Td> <Td> 1,443,232 </Td> </Tr> <Tr> <Td> Madison Square Garden, New York, USA </Td> <Td> 1,167,544 </Td> </Tr> <Tr> <Td> Manchester Arena, Manchester, England, UK </Td> <Td> 1,072,079 </Td> </Tr> <Tr> <Td> The SSE Hydro, Glasgow, Scotland, UK </Td> <Td> 1,028,934 </Td> </Tr> <Tr> <Td> Barclays Center, Brooklyn, USA </Td> <Td> 936,794 </Td> </Tr> <Tr> <Td> Lanxess Arena, Cologne, Germany </Td> <Td> 931,394 </Td> </Tr> <Tr> <Td> Arena Monterrey, Monterrey, Mexico </Td> <Td> 906,290 </Td> </Tr> <Tr> <Td> Mexico City Arena, Mexico City, Mexico </Td> <Td> 881,665 </Td> </Tr> <Tr> <Td> The Forum, Inglewood, U.S. </Td> <Td> 790,728 </Td> </Tr> <Tr> <Td> WiZink Center, Madrid, Spain </Td> <Td> 784,699 </Td> </Tr> </Table>

How many does the hydro in glasgow hold