Impact of financial assumptions on the cost optimality towards nearly zero energy buildings - a case study
Abstract
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The ultimate test of the business case for high performance low carbon building is to consider how the human benefits of these buildings could be reliably quantified to prove beyond all doubt the positive Return on Investment (ROI). After all, staff costs, including salaries and benefits, typically account for about 90% of business operating costs.
Energy efficiency (i.e., the ratio of output of performance to input of energy) in office buildings can reduce energy costs and CO2 emissions, but there are barriers to widespread adoption of energy efficient solutions in offices because they are often perceived as a potential threat to perceived comfort, well-being, and performance of office users. However, the links between offices' energy efficiency and users' performance and well-being through their moderators are neither necessary nor empirically confirmed.
The building sector is considered as the biggest single contributor to world energy consumption and greenhouse gas emissions. Therefore, a good understanding of the nature and structure of energy use in buildings is crucial for establishing the adequate future energy and climate change policies. Availability of the updated data is becoming increasingly important in order to allow a rigorous analysis. In this paper, recent data on the world energy consumption in both residential and commercial buildings are reported.