Xcel Energy has hit a major milestone in the construction of a new service center that will position it to continue to provide safe and reliable energy service across St. Paul. The company has completed the structure of the main building at the site, marking the halfway point in the 320,000-square-foot project. The new service center, which is part of The Heights multi-use development on St. Paul’s East Side, will be about twice the size of the company’s existing service center on Rice Street.