Energy Digital Twin: an HBIM procedure for energy redevelopment in historic buildings

A recent ministerial decree n. 77/2020 provides tax deductions and incentives in order to make the building heritage more efficient. This highlighted the issue of energy efficiency in historic buildings, which are arduos, as compliance with the requirements could cause an unacceptable alteration of building’s historic – artistic values. Following workflow defines an assessment system based on Level of Sustainability which is a digital that allows Code Checking and that evaluates (without giving value judgments) environmental, cultural and economic level of sustainability of a restoration, in order to obtain an environmentally-historic-aware energy upgrading.