The arena also hosted the 2008 Democratic National Convention , although the party 's presidential nominee , then-Senator Barack Obama , made his acceptance speech at the nearby Invesco Field at Mile High . To prepare for the convention , Pepsi Center underwent large scale projects including electrical power increases and the installation of new transformers by Xcel Energy ( which is the namesake of the Xcel Energy Center in St. Paul , which hosted the 2008 Republican National Convention the following week ) and telecommunications wiring by Qwest . A backup generator was installed that has the capacity to power the entire city of Pueblo . Roughly of optical fiber cables were installed for the massive communication needs of the convention
2008 Republican National Convention
2008 Republican National Convention
Pepsi Center