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.


An overview paper of the CTT technical infrastructure will be presented at the Norwegian Informatics Conference (NIK2016)
Dirk Ahlers, Patrick Driscoll, Frank Alexander Kraemer, Fredrik Anthonisen, John Krogstie

Cities are main drivers for climate change mitigation and emission reduction today. However, in many cases they lack reliable baselines of emissions to validate current developments over time, assess the impact of their projects, and prioritize investments and actions. They also need better data on a small geospatial and temporal scale to really understand local emissions. This paper describes the rationale and the design of the Carbon Track and Trace project (CTT) that aims to develop an automated system for greenhouse gas (GHG) emissions monitoring through a low-cost city-level sensor network. The system is based on a flexible architecture incorporating open source sensor platforms, an Internet-of-Things wireless backbone, and extensive data analytics. We describe concept, architecture, and deployment as well as initial results.

Post date: 2016-10-24 12:31

Registration deadline 21.Oct.2016

Our project partner Trondheim Kommune is hosting a Climathon in October. While this is not a CTT event, the questions are very relevant and related and we hope for a large turnout:

Trondheim Municipality, NTNU and Technoport join forces to host a Climathon on October 28th at DIGS in Trondheim. During a Climathon event, each city brings up their local climate challenges and invite the whole city to find ideas and development them within 24 hours. Trondheim is the northernmost city in this global movement which 121 cities all over the world participate in. CO2-emissions from the transport sector account for approximately 50 % of the total CO2-emissions in Trondheim. The city needs measureable, integrated and engaging solutions to reduce the CO2-emissions from the transport sector. Through the Climathon Trondheim, we’d like to engage students, scientists, entrepreneurs and citizens from different backgrounds to co-design innovative and future-oriented solutions and business cases for “Zero Emission Knowledge Axis” and the city beyond.

Read more and register here.

Post date: 2016-10-19 15:45
The smart city event NordicEdge2016 takes place in Stavanger 06.-07.10.2016 and CTT is participating with a booth and a presentation at the Centre Court in the Stavanger Forum.
Come and meet CTT and NTNU at booth 184 at the Expo and join our presentation in the session Public Solutions from 13:30-14:45on Friday, 7th.Oct.2016 on the topic Climate-Smart Cities.
Post date: 2016-10-04 15:15

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