Frequently Asked Questions​

Most frequent questions and answers


Our proposals are all-inclusive. That means they cover everything related to your EDGE certification journey, including registration, preliminary and final certification costs, design audit fees (if applicable), and site audit fees. We also include a standard scope of EDGE Expert support at no additional cost to help you get started with your EDGE journey.

Absolutely. We work with EDGE Experts throughout the world to offer an integrated offer to our clients. However, if you are already working with an EDGE Expert, you may be eligible for a discount.

You cannot choose your auditor. Sintali works exclusively with SGS. We offer a one-stop shop approach, so you get one contract that includes the certification and auditing, without having to negotiate or tender your auditing fees separately. SGS is one of the largest global auditing firms in the world and has auditors around the world. Having worked on hundreds of EDGE projects, they bring high quality, rigor and expertise to our clients.

The time needed for EDGE certification depends largely on the availability of documentation and the client’s familiarity with the EDGE App and the process. Typically, EDGE certification and audit can take a matter of weeks. If you are working towards a specific deadline, for example accessing financing or a live event, please let us know as early as possible so we can help you meet your deadline.

The first step to getting your project registered is to ensure your registration invoice has been paid. Once payment has been received, your auditor will contact you and ask you to submit the project on the EDGE App for registration. Make sure you select “Sintali-SGS” as the certifier.

Registration, certification and design audit fees need to be paid upfront before any work starts, to avoid any conflict of interest. As soon as payment is received, the project is registered on the EDGE App. For portfolio projects, payment plans are arranged accordingly.

To achieve EDGE Zero Carbon Certification, a project must reach a minimum of 20 percent savings in water and embodied energy, and a minimum of 40 percent energy savings on-site. 100 percent energy savings can then be achieved either through renewables or carbon offsets. For more information, read the IFC guidance.

EDGE certificates do not need renewals as they certify that the asset is built to be resource-efficient.

Projects that undergo the EDGE Zero Carbon certification require renewal every 2-4 years as the certification is based on operational data. 


Yes, we accredit EDGE Expert trainers who can deliver training in multiple languages. We currently only offer English and Spanish, and will shortly be offering French and Chinese too. 

Please review our requirements for EDGE Trainers here  and submit a partnership request

You only have to take the EDGE Exam if you want to get the EDGE Expert accreditation. We have many clients who take the EDGE Expert training to improve their understanding of the standard, without necessarily needing the accreditation.

You need to have a higher education qualification in a construction industry-related field, or three years’ experience in a construction industry-related field and a higher education qualification of any kind. 


Head to the EDGE app and create the first use of your subproject. Using the same project name, create another subproject with the second use and save it. You can do this for as many uses as you have in your project. Make sure to be signed in to be able to save or the save function won’t work.

  1. Measure entire “exterior” wall length – the line that separates “interior” from “exterior” (red line)
  2. Ignore small details: ducts, notches
  3. Multiply by floor height =Wall Area
  4. Sum the area of all glazed windows and doors = Window Area
  5. Divide Window Area by Wall Area = WWR


Tip: Include walls with windows into unconditioned enclosed space.

If you have two cooling systems, select the measure representing the system with the biggest capacity and model the remaining systems in the calculations of this measure. For example, a project has:

  1. 200 Refrigeration Tons (RT) air-cooled chiller
  2. 50 RT water-cooled chiller
  3. 48000 BTU/h VRF system

Select “Air Conditioning with Air Cooled Chiller” in this case and include all the systems in the calculations of that measure (preferably using the EDGE calculator of that measure). Make sure to convert all cooling capacities to the same unit when comparing system capacity.

Yes, as long as the efficacy of the lighting is above 90 Lumens/Watts. At least 90 percent of all the fixtures must meet the EDGE requirements. You can still pursue the lighting measures even if not 100 percent of your lighting fixtures are EDGE compliant.

Please refer to the Materials User Guide and select a material that has similar/comparable embodied energy on the EDGE app.

Version 3.0

All projects will be required to register with EDGE version 3.0 from October 2021. Projects registering before October will have a choice of version

One of the key updates in EDGE version 3.0 is an updating of all the baselines around the world. As building codes become more rigorous, the baselines in EDGE become more rigorous as they are an aggregation of building codes and industry practices. That means that countries where the building regulations have become more stringent will see that a 20% improvement over the baseline is harder to achieve than it used to be.

Yes but you will need a signed certification agreement and our team will work with you to determine the best way for multiple projects to be registered before the deadline. If you want to find out more about our portfolio process, get in touch.