EDGE (Excellence in Design for Greater Efficiencies)
EDGE is a green building certification system focused on making buildings more resource efficient. It can be used for various types of buildings such as homes, hotels, hospitals, offices, schools, etc. in any stage of their life cycle, including new construction, existing buildings, and major renovations. EDGE empowers design teams and project owners to quickly evaluate and compare estimated costs for design strategies targeting reductions in usage of energy, water and embodied energy of materials.
- Easy to use: user-friendly Software rather than complex simulations.
- Smart: A powerful engine underlies an apparently intuitive interface that understands local climatic conditions and how the building will be used by occupants.
- Fast: Edge software calculates savings by applying all changes to the building.
- Financial feasibility: EDGE is a powerful investment tool that quickly calculates the return on investment for your green building strategies.
- Affordable the EDGE software is free to everyone with certification available at a modest cost.
EDGE uses a performance calculation engine using a set of equations based on climatology, heat transfer and building physics. With the needed design inputs, the software demonstrates a building’s potential performance in three target areas of energy, water and embodied energy of materials.
For predicting energy consumption, a quasi-steady-state model is used. This model is based on European CEN standards and ISO 13790. Base case parameters are determined, relying on the information on typical building practices and national building performance codes. Typical base case system efficiencies for HVAC systems are based on ASHRAE-90.1-2007 standard.
EDGE certificate and compliance
To comply with the EDGE standard, a building must achieve a minimum 20% savings in all three mentioned areas when compared to a local benchmark.
There are documentation requirements during both the design and post-construction phases of a building project. The required documents include design drawings, manufacturer’s data sheets calculations, proof of delivery and photographs. After pre-certification check, a site audit will be required for EDGE certification.
There are two types of measures for the three mentioned areas. Required measures should be submitted; even if they have a negative impact on the building. Optional measures aren’t necessary to submit and could be ignored.
The following graphs show the classifications of these measures for each area. Measures with an asterisk are the required ones, and others are optional.