According to the EU norms and standards - Directive 2010/31/EU, 2002/91/EC, ISO 13790:2008 and references
Monthly calculations, reflecting the influence between parameters
All basic parameters for energy calculations included: geometry, U-values, infiltration, indoor temperatures, occupancy schedules, heating schedules, ventilation rates, operation periods, lighting, various equipment, system efficiencies
Calculations for "Actual", "Baseline" and "After measures"
Results presented as energy need, energy use and heat transfer coefficients