The City Energy Analyst aims to supply planners and researchers with tools for the analysis and optimization of building energy systems in urban districts.


At CEA we are committed to empower practitioners and researchers to plan future low carbon cities. Check out a summary of our latest executive course held during July in Singapore

Applied Research

The City Energy Analyst (CEA) is being actively developed through case studies in Europe and South-East Asia.

Zurich - University Campus

The main campus of ETH Zurich will be transformed into a medical and educational hub in the centre of the city. Together with local authorities and designers, the CEA tool is used to explore synergies between buildings and transportation systems.

Singapore - Tanjong Pagar

The most important Singaporean ship terminal will be transformed into a mixed-use, high-density city district by 2030. Together with urban designers and engineers, the CEA tool is used to explore the optimal combination of resources, building programs and building typologies for the area.

Almere - Floriade legacy> 2022

The site of the world’s largest horticultural expo in Almere will be co-developed as a green extension to the city center by 2022. The CEA is used to analyse the effect of building form and vegetation on the area’s energy demand in terms of quantity, quality (temperatures) and dynamics.


Developed in Python, an open-source programming language, CEA is completely open source and free to use. CEA offers extensive documentation in order to facilitate further expansion. 



Process engineers, building systems engineers, architects and urban designers have integrated data, algorithms, and procedures needed to better assess and determine the future energy performance of our cities and communities.


Urban Planning and Design


Building Systems Engineering

Process Engineering


The CEA tool puts an emphasis on detail, accuracy and speed. Comprehensive multi-physics mathematical models are integrated according to the latest ISO and SIA standards and the state-of-the-art in research. CEA features the detailed and rapid simulation of energy exchange between buildings, users and the environment at the district scale.

Features at a Glance

The CEA aims to cover a wide number of applications for dynamic demand prediction, energy systems optimization, analysis and visualization. The features being researched and developed for the CEA are listed below.