Building Life-Cycle Cost (BLCC)

BLCC5 is programmed in Java with an XML file format. The user's guide is part of the BLCC5 Help system. BLCC version 5.3-16 contains the following six modules:

  • FEMP Analysis, Energy Project for energy and water conservation and renewable energy projects under the FEMP rules based on 10 CFR 436;
  • Federal Analysis, Financed Project for federal projects financed through Energy Savings Performance Contracts (ESPC) or Utility Energy Services Contracts (UESC) as authorized by Executive Order 13123 (6/99);
  • OMB Analysis, Projects subject to OMB Circular A-94 for non-energy, federal government construction projects, but not water resource projects;
  • MILCON Analysis, Energy Project for energy and water conservation and renewable energy projects in military construction;
  • MILCON Analysis, ECIP Project for energy and water conservation projects under the Energy Conservation Investment Program (ECIP); and
  • MILCON Analysis, Non-Energy Project for military construction designs that are not primarily intended for energy or water conservation.

BLCC5 conducts economic analyses by evaluating the relative cost effectiveness of alternative buildings and building-related systems or components. Typically, BLCC software is used to evaluate alternative designs that have higher initial costs but lower operating-related costs over the project life than the lowest-initial-cost design. It is especially useful for evaluating the costs and benefits of energy and water conservation and renewable energy projects. The life-cycle cost (LCC) of two or more alternative designs are computed and compared to determine which has the lowest LCC and is therefore more economical in the long run. BLCC also calculates comparative economic measures for alternative designs, including Net Savings, Savings-to-Investment Ratio, Adjusted Internal Rate of Return, and Years to Payback. The software can evaluate federal, state, and local government projects for both new and existing buildings. While the BLCC program is oriented toward building-related decisions, they can be used to evaluate alternative designs for almost any project type in which higher capital investment costs result in lower future operating-related costs.

Current VersionBLCC 5.3-16
System RequirementsWindows, Mac OS X, or Linux.
Contact/SupportNational Institute of Standards and Technology (NIST)
AvailabilityFree download from the Department of Energy's website.