Energy-efficient renovation had been accepted widely as the best solution for aging residential buildings.
The ERF includes tools for energy-efficient renovation, including 'E-Scope', 'E-Ray', 'Impact Tables A&B'Impact'E-SpecTables thandhave been developed to support energy-efficient remodeling processes in South Korea.
Following it, a suitable energy-efficient renovation plan, integrating all effective and available energy-saving measures, could be put forward for the subject building, and its effects on reduction of energy consumption, CO2 emission and cost be evaluated accurately.
The results showed that from the viewpoint of reducing energy consumption and CO2 emission, energy-efficient renovation was worth being implemented to upgrade the existing residential buildings in China, but from the economic view, governments should provide certain subsidy for such real projects and increase electricity price.
In order to guide such real projects in China and maximize the benefits in energy, environmental and economic fields from these activities, this article developed a methodology to assist decision-makers to design energy-efficient renovation plan in the early stage of design phase, and used a case study to demonstrate how to apply it.
It is recommended to apply a policy mix, including all the proposed policy instruments carbon tax, subsidies for solar technologies, and funding for energy-efficient renovation.
Bradford Tito, the county's deputy director of environmental coordination, said that the participating companies' efforts would make it affordable to install new boilers, make energy-efficient home renovations, use biofuels for heating, add solar heating and buy products that can quickly reduce home energy consumption.
Three policy instruments were included in the system dynamic model: carbon tax, subsidies for solar technologies, and funding for energy-efficient building renovations with the aim to decrease energy consumption.
The first involves individual renovation phases, their combinations and a complex energy-efficient refurbishment of the existing multi-family buildings.
