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LoanSTAR after 11 Years: A Report on the Successes and Lessons Learned from the LoanSTAR Program
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The Texas LoanSTAR (Loans to Save Taxes And Resources) Program was established in 1988 by the Texas Governor’s Energy Office (GEO) as a revolving loan program for funding energy conserving retrofits in state and local government buildings. The program has been very successful. One of the important features of the LoanSTAR program is the Monitoring and Analysis Program developed by the Energy Systems Laboratory that measures and reports energy savings from the retrofits using hourly before-after measurements in sites where the cost of the retrofit exceeds $100,000. At such sites data acquisition systems are ideally installed six to twelve months prior to the retrofit to monitor energy consumption so that an hourly whole-building, before-after analysis can be used as the basis for calculating savings. Numerous papers have documented the successes and procedures developed in the LoanSTAR program, including Athar et al. (1998), Claridge et al. (1991, 1992, 1994, 1996), Kumar et al. (2002), Turner et al. (1992, 2000), and Verdict et al. (1990).
DescriptionThe Texas LoanSTAR program, which began in 1988, has produced over $119 million savings from energy conservation projects applied to state and local government buildings. One of the key features of LoanSTAR has been the monitoring and verification of the savings. Nationally, LoanSTAR has served as a showcase for other states to follow. LoanSTAR M&V methods have become the foundation for the USDOE’s NEMVP, IPMVP and ASHRAE’s Guideline 14P. However, underneath the success of the LoanSTAR program are many lessons that have been learned that are not as highly publicized. This paper will present an overview of 11 years of measured savings from the LoanSTAR program, including the cost effectiveness of the LoanSTAR loans, trends in LoanSTAR funding, lessons learned about how to reduce the cost of a revolving loan program while maintaining quality control, and a discussion of the LoanSTAR emission reductions.
SubjectTexas LoanSTAR program
monitoring and verification
Loans to Save Taxes And Resources
Texas Governor’s Energy Office
Monitoring and Analysis Program
- Technical Reports 
Haberl, J. S.; Turner, W. D.; Claridge, D. E.; O'Neal, D. L.; Heffington, W. M.; Bryant, J.; Verdict, M.; Liu, Z.; Visitsak, S. (2002). LoanSTAR after 11 Years: A Report on the Successes and Lessons Learned from the LoanSTAR Program. Energy Systems Laboratory (http://esl.tamu.edu), Texas A&M University. Available electronically from