A new program from DOE will complement the Energy Star Portfolio Manager, which building managers use to track and score actual energy performance on as-built buildings. The new asset rating will give potential buyers or tenants information on how energy efficient the structure is. An online tool that interfaces with the Porfolio Manager tool allows building owners and managers to get a score based on information they enter about the building envelope, mechanical and electrical systems and other major energy- using equipment in the building. Combining these two tools will allow for comparing actual energy use against the building’s potential energy efficiency.