500+ registered users
for CitySim Pro

our users can count on YouTube videos
a Wiki page for the input format
without forgetting a Users' Guide

Project UHI
in collaboration with
the city of Fribourg

a student uses CitySim Pro
to investigate ways to mitigate Urban Heat Islands (UHI)
and improve urban comfort in summer

A teaser
CitySim Pro

showing the use of CitySim Pro
from 3D models to full physical models
and their energy consumption/production

kaemco provides software for consulting in energy and urban physics

kaemco is a spin-off company of the Solar Energy and Building Physics Laboratory (LESO-PB) of EPFL. Founded in 2013, kaemco provides scientific simulation tools for a decarbonized and sustainable future.

Urban planning

We offer support to consulting companies, architects and urban planners for the use of our CitySim Pro simulation tool in their urban planning projects.


We provide installation, maintenance, documentation and training services for the users of the urban energy simulation software CitySim.


We offer a (geo-)data storage service, real-time data acquisition and access to databases for companies and public authorities.


CitySim Pro

Graphical User Interface (GUI) prepared by kaemco and built on top of the open-source CitySim Solver initially developed at EPFL.

CitySim aims at the simulation and optimisation of the sustainability of urban settlements by predicting energy fluxes at scales from a small neighbourhood to an entire city.

(Geo)database Services

A PostgreSQL server with PostGIS objects, a mosquitto server for MQTT messaging, and a web-based dashboard to display the data are provided by kaemco.

Our current price list


Building Integrated Photovoltaics (BIPV)

Estimation of the solar potential and electricity production considering obstructions from:

  • surrounding buildings (near-field)
  • mountains (far-field)

Heating and Cooling

Estimation of the heating and cooling power demands considering:

  • passive solar gains through glazing
  • fixed and moveable solar shading (blinds)
  • internal heat gains due to occupants' activities

Radiant comfort and Urban Heat Island (UHI) effect

Estimation of the surfaces' temperature and urban comfort indices (MRT, ITS, COMFA*) considering:

  • construction materials
  • solar reflectance
  • infrared emissivity
  • evapo-transpiration

District Heating Network (DHN)

Estimation of optimal extensions and operations of DHN considering:

  • temperature, pressure and mass flow in the pipes
  • losses in the ground
  • pump rotational speed
  • opening of the valves


Jérôme Kämpf Founder and Managing Partner

Jérôme is Physicist and responsible of the general management of the company together with R&D ...

jerome.kaempf at kaem.co

Jacques Oguey Administration Manager

Jacques is Hotelier-Restaurateur and responsible of administrative tasks within the company...

jacques.oguey at kaem.co

Actual and past projects

(in progress)

The project aims to develop a decision support software for District Heating Network contractors before making heavy investments. Eguzki will allow on the one hand, to optimize the architecture of the networks by reducing the investment costs and on the other hand to optimize the exploitation and to reduce the energy losses of the network.


The project aims to evaluate the opportunities and limitations of solar thermal panels coupled with storage for district heating in Switzerland. Final report

Urban Heat Islands

Through this project, the city of Fribourg wishes to provide itself with a decision-making and communication tool to anticipate and raise awareness of the consequences of global warming on urban comfort and human health, and on urban planning (nature in the city).


The project studies potentials, opportunities and risks linked to an energy strategy that goes beyond considering single buildings. With the objective to compare the traditional building by building retrofit strategy with a new combined approach that has measures dedicated to a single building but also considers connecting them through district heating, integrating renewable energy and considering an energy and economic analysis. Final report


The developed urban energy simulation framework will help collectivities, urban planners and stakeholders to evaluate the environmental impact of cities in a changing climate and to provide a basis for testing new urban energy retrofit scenarios.

CCEM-IDEAS4cities (completed)

In the project simulation models of urban energy hubs and urban microgrids for a cluster of buildings or city quarters will be developed and coupled to city energy models, which simulate the energy demand, generation, storage and management of the buildings in the city.

IEA SHC Task 50

Advanced Lighting Solutions for Retrofitting Buildings - Research and developments in the field of energy efficient lighting techniques encompassing daylighting, electric lighting and lighting controls combined with activities employing and bringing these techniques to the market can contribute significantly to reduce worldwide electricity consumptions and carbon dioxyde emissions.