| Building Energy Code (BEC) currently in-force | Act On Improvement Of Energy Consumption Performance Of Buildings (Building Energy Conservation Act) (No. 53 Of 2015) |
| Date of BEC publication | 1979 |
| BEC Jurisdiction | National |
| Climate zone classification | Warm, Humid |
| Income Group | High income |
| Type of BEC | Combination (Prescriptive/Performance-Based ) |
| BEC Coverage | Unified BEC |
GENERAL INQUIRIES
Japan
Tokyo
* denotes coverage is through the European Ecodesign Directive
Types of Standards
On selection, change the data
Passive design (Residential)
| Indicator | Mandatory Minimum Requirements |
|---|---|
| Maximum Solar Heat Gain Coefficient (SHGC) | Yes |
| Roof U-value (W/m². K) | 0.94 |
| Floors U-value (W/m². K) | 0.98 |
| External walls U-value (W/m². K) | 1.1 |
| Doors U-value (W/m². K) | |
| Air leakage prevention | Yes |
| Enforcement Mechanisms | Checklist of Passive Design, Thermal Transmittance or Insulation Calculations for Building Envelope, Solar Heat Gains Calculations for Building Envelope, Glazing Factors for Fenestration, Permanent Shading |