HOW DOES BROLL RATE BUILDING PERFORMANCE?

Broll adopts a myriad of performance assessment metrics for buildings related to sustainability. This report examines three critical metrics for measuring energy efficiency:

Ÿ energy use intensity;

Ÿ energy cost intensity; and

Ÿ carbon intensity.

Energy Use Intensity (EUI)

With the absence of an industry standard or benchmark in cross-building assessments for energy consumption⁹, comparing energy usage between buildings is challenging. Without considering building size, configuration or building type, measuring energy usage for a chosen period will not provide an accurate benchmark system for analysis. Therefore, an indicator such as the EUI standardises energy use data, based on critical criteria for practical comparative assessments.

EUI indicates the energy efficiency of a building’s design and operations. It helps set energy performance targets to benchmark against a building’s operational performance and similar structures. It is also used to evaluate compliance against energy code requirements. By allowing for energy comparisons, EUIs highlight focus points and areas to address the reduction of overall energy consumption.

Based on a case study analysis of buildings within Broll’s US$1.8-billion facility management mandate portfolio, the data shows the tremendous impact of green buildings and features on energy use and efficiency. Landlords recognise these gains, which is why investors such as Lango, Sanlam, Eco Bank, ACA and Actis are either implementing or considering retrofitting projects for increased energy efficiency.