About CTT

Municipal GHG emission data repositories are expensive and time-consuming to build, maintain, validate, and evaluate. The absence of detailed cost/benefit calculations and measurements make it difficult to understand results of mitigation strategies. The Carbon Track and Trace (CTT) project aims to develop an automated system for greenhouse gas (GHG) emissions monitoring and reporting. The system will enable a municipality to automatically log and analyse calibrated measurements of their direct GHG emissions. This data will for the first time allow municipalities to develop evidence-based policy for mitigation strategies, linking specific actions and strategies to measured reductions unlocking the potential for significant increases in private capital investments in GHG emission reduction measures.


An IoT Sensor Network

Realtime measuring of greenhouse gas levels can be achieved by using inexpensive, open-source hardware.



By using novel communication technologies like LoRaWAN, we make the sensor network scalable.


Cloud Integration

The measurements from the IoT sensor network are relayed from gateways to an open cloud platform, allowing for easy integration with other applications.


Data Analysis

Tailored data analysis will integrate sensor measurements with other open data sources to generate new insights and city-level emission overviews.



Analysis results are visualized to different stakeholders and also made available for further processing.

End users

Politicians and Planners

CTT gives politicians and planners more accurate real-time greenhouse gas emissions measurements, facilitating faster feedback loops between action and quantifiable impact.


Giving citizens access to real time air quality maps of their city give them the opportunity to influence their local community to become more environment friendly, choose a 'green route' to work and choose when its best to go for a run.


The CTT ecosystem gives researchers an open source, low-cost platform for field measurements of greenhouse gas emissions in buildings, energy, transport, and waste, and will lower the threshold for researchers to engage with local emissions data.


We have deployed several sensors in Vejle, Denmark and the we are happy to see that we are receiving attention because of it.

The Danish website of Association of municipal IT managers ( recently posted an article about CTT on their website. Click here to read the Danish article.

Post date: 2016-09-15 13:27

On 26th and 27th of August, CTT was represented at the Maker Faire exhibition in Trondheim, Norway.

The stand demonstrated the technical side of the project, and there was a lot of interest from the visitors.

Maker Faire is a part of Trondheim Playground. To read about the Playground, visit


Post date: 2016-09-03 20:24

On August 17th, CTT was presented at the Sino-Norwegian Seminar on Zero Emission Buildings & Neighbourhoods / Green Buildings.

The presentation included an overview of the project itself, the milestones accomplished throughout 2016 as well as envisions of future collaborations.

Post date: 2016-09-03 20:18

The Climate-KIC Summer School ClimateJourney16 is staying for a week in Trondheim. It is Europe’s largest climate innovation summer school with over 220 students.

Patrick Driscoll gave a lecture at the school at NTNU about city-level emissions and the CTT project.

Post date: 2016-08-25 13:17

Read the Norwegian document here

English Summary:
The city of Trondheim is having a dialog meeting where 12 projects will present themselves. The projects will be within the area called "Kunnskapsaksen", stretching from Sluppen through Elgeseter and Midtbyen to Brattøra and Nyhavne, show how Trondheim can become a better and more sustainable city through the use of smart technology.

The motivation behind this dialog meeting is that Trondheim wants to form an application for EUs Horizon2020 program in the category “Smart Cities and Communities lighthouse projects (SCC1)”. Through the work with this application, Trondheim will visualise and support the opprtunities that exists, and look into how experiences can spread to the rest of the city.

Post date: 2016-08-23 00:00

A city’s greatest store of value is the knowledge and experience of its citizens, and iHow is a web/mobile platform to unlock that knowledge. Using advanced machine learning and geolocation algorithms, iHow will seamlessly connect people that want to learn a skill with those that want to teach one. With iHow, you will have an easy, searchable interface that allows you to look for people that offer a particular skill, see previous user ratings, negotiate a price/barter for services, and book a session all in a few steps. iHow can help lower the overall climate footprint of a citizen by reducing the amount of consumption of disposable goods by teaching citizens how to repair and reuse existing products as well by exchanging services instead of physical goods. Additionally, there is a strong social benefit in connecting diverse segments of the citizenry to one another through their quest to learn new things.

Read about Open Innovation Day - Gothenburg

Post date: 2016-08-21 19:08

The theme of Expo is “Internet + Innovation Entrepreneurship”. The expo contains exhibition, summit & forum, policy announcement, marching-making, and platform for dialog. This is very relevant for us in CTT, and we are excited to be attending the 2nd China Smart City Expo taking place 29 - 31. July. This is the first time CTT will be presented in China, and we are hoping to attract some attention to what is possible through modernized tracking and visualization of emissions, especially PM in Chinas case.

Post date: 2016-07-21 10:10

Dirk Ahlers and Patrick Driscoll presented an overview paper on CTT at ICE ITMC Conference 2016 in Trondheim, Session Sustainable Technology Management.

Abstract: A necessary prerequisite for impactful climate mitigation action is the availability of suitable and reliable baselines of emissions. This is especially true for urban and city-level actions and strategies that need reliable local data about emissions to prioritize actions and investments to achieve the highest possible impact. We describe the work of the Carbon Track and Trace project (CTT) done in collaboration with the municipality of Trondheim, Norway, to better understand the current gaps in emission reporting and monitoring based on GPC and discuss initial steps to address them.

Post date: 2016-07-04 20:27

Jette Vindum from Vejle Municipality presented the city needs and requirements for emissions monitoring, after a brief introduction to the CTT project.

Carbon Track and Trace CTT in Vejle available from SlideShare.

Post date: 2016-06-14 13:37

CTT has presented at ICLEI Smart CITIES 2.0 @ Metropolitan Solutions 2016.

Jette Vindum from Vejle Municipality has presented the city needs and requirements for emissions monitoring, after a brief introduction to the CTT project. The presentation is online.

Post date: 2016-06-14 13:34