The G-res Tool


We offer training on how to use the G-res Tool to assess the greenhouse gas (GHG) emissions of your reservoirs.

Learn to evaluate the GHG emissions from your reservoirs

Using the internationally recognised G-res Tool

New sustainability and environmental criteria are currently being developed for the provision of green bonds and other forms of climate finance. These criteria are increasingly requiring more detailed assessments of greenhouse gas (GHG) emissions, including those caused by the creation of a reservoir.

Our interactive training course has been designed to allow individuals with a basic knowledge of geographic information systems and reservoir GHG dynamics to independently use the GHG Reservoir (G-res) Tool and accurately interpret the results.

The course includes a scientific introduction to the tool and a step-by-step tutorial on using it, as well as training on case scenarios and results analysis. When the course is finished, participants will be accredited as certified G-res Tool users.

Course outline

Module 1: Background and scientific basis of the G-res Tool

Module 2: Step-by-step tutorial on G-res Tool and Earth Engine functionality

Module 3: Using the G-res Tool with real project data

Book a training

The G-res Tool training is going virtual!

With the current global situation, we decided that it was time to bring our training online.

Upcoming virtual training dates: 18 October 2021

The next G-res Tool Training course will start on Monday 18 October 2021 (participants are required to attend live streaming sessions on the 18, 20 and 22 October, 1pm to 5pm GMT). This course ends on Friday 22 October 2021.

Register your place for our next training directly online through our training academy.

To learn more about the training course and booking options – including booking a course at your workplace – as well as the additional services we offer, please contact

How much does it cost?

The standard rate for the training course is £2,500. Discounts are available to IHA members.

To learn more about IHA membership, visit

Other services

Along with training opportunities, the G-res team offers the following services:

The team can assess your reservoirs, provide validated results and offer further analysis of the net GHG emissions obtained.

Validation of results
The team can validate your G-res Tool results and certify the net GHG emissions of your reservoir. Validated results acknowledge the quality of the work done using the G-res Tool and certify the results for public disclosure.


Trainee Testimony:

“As a consultant, I can see growing demand for GHG emissions estimates in tenders for hydropower projects globally. Thanks to the training I received on the G-res Tool, I can now provide clients with cost-effective GHG emissions analyses as a certified user.” – Karin Grandin, Sweco

Start today

Contact the G-res Team for further information and to plan a training or assessment.