By 2050, the global floor area in buildings is expected to double to more than 415 billion square meters, and buildings’ energy demand may increase by as much as 50 percent. As assets with useful lives average 50-100 years, buildings lock in decisions today like few others, especially in high-growth regions like India, China and Africa, says World Resources Institute (WRI) President and CEO Andrew Steer.
Meanwhile, the buildings sector is a laggard in climate action. Average energy consumption per person in the global buildings sector remains practically unchanged since 1990 despite the fact that building energy upgrades represent thesingle largest source of low-cost emissions reductions and create significant equity benefits by reducing energy poverty. Three-quarters of NDCs overlook buildings and two-thirds of countries still have no mandatory building energy codes, leaving the easiest greenhouse gas (GHG) reductions on the table.
To keep global temperature increase to even 2 degrees Celsius requires an entirely different level of ambition. The IEA 2-Degree Scenario requires that building-related CO2 emissions drop by 85 percent from current levels by 2060. This means all new buildings must be zero carbon by 2030, and all new and existing buildings must be net zero carbon by 2050.
China is undergoing massive urbanization, which could increase buildings’ energy use by as much as 40 percent in the next 15 years. Now, the question is: How can those responsible for building construction—namely, cities, towns and developers—deliver on the lofty goals set by the national government? One shining example is Shanghai’s Changning District, which recently put in place an energy monitoring platform that now tracks 160 of the district’s 165 public buildings. Thanks to the project, 32 buildings have been retrofitted to achieve an average 20 percent energy savings. To encourage the remaining 133 public buildings to renovate, the district is considering using a third-party ranking system to rate buildings on their energy performance, a strategy that’s proved effective in other locales. The district also provided 23 million yuan ($3.34 million) in subsidies to help building managers make their buildings more efficient. This lowered the payback period for the private sector, which in turn encouraged them to invest an additional 140 million yuan ($20.33 million).
The Financing Sustainable Cities Initiative recently studied 16 case studies of municipal retrofit programs and projects to build a map of the elements involved in successful business models. We found that cities deployed a wide range of mechanisms, including energy tariff levies, municipal bonds and concessional finance. Most importantly, we found that successful cities utilized some public budgets, such as existing facilities maintenance funds, as a part of their overall business model. At recent workshops in Mexico City and Medellin, Columbia, we heard about the different approaches cities are using, including our host, which is funding its first round of retrofits with a targeted climate fund and exploring other options to make changes to a larger set of municipal buildings.
The “Road to Carbon Neutral Infrastructure” will be the focal point the CCC Summit being held in Gothenburg, 19 June.
Learn more and register here: http://constructionclimatechallenge.com/ev…/ccc-summit-2018/