Most of the existing building energy benchmarking tools use the total energy consumption of the entire building (landlord + tenant part) for benchmarking. However, if the building got a bad benchmarking result, it is hard to know whether the landlord or the tenant has to bear more responsibility for improving the energy performance. Therefore, it is worth to have a benchmarking systems to differentiate the energy performance of tenant and the landlord part (of course, it is always better if we could know the performance of individual building system, e.g. lighting, air-conditioning.... as well, but it is still very difficult to develop such system due to data availability.).
Hong Kong Green Building Council (HKGBC) therefore developed a benchmarking tool specifically for office tenants, so as to let them understand what their energy performance is and provide them initial saving potential suggestions. There are 2 parts of the system, a simple (free) and a more sophisticated tool. For more information, you can refer to the following website: http://bestoo.hkgbc.org.hk/greenbuilding/index.aspx
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