Climate Change Solutions Simulator
Watch a three minute demonstration of its operation and features below.
Ways to Use En-ROADS
Experiment with the simulator and create your climate vision in En-ROADS.
In a workshop
A non-role-playing workshop experience for groups to learn about climate solutions.
Have you run an En-ROADS Event? Please register your event here. Registering your event allows us to keep track of who is running the game around the world.
Ways to Share En-ROADS
En-ROADS is a System Dynamics model with origins in the MIT PhD theses of Dr. John Sterman and Dr. Tom Fiddaman. Recent breakthroughs have enabled the model to be made user friendly and accessible to wide audiences. The modeling team at Climate Interactive, led by Dr. Lori Siegel, have taken on the more recent model developments in continued collaboration with MIT Sloan’s John Sterman, Ventana System’s Tom Fiddaman, and many others.
En-ROADS is a global model that focuses on how changes in the energy, economic, and public policy systems could affect greenhouse gas emissions and climate outcomes. Behind the simulator is an extensive study of the literature of important factors such as delay times, progress ratios, price sensitivities, historic growth of energy sources, and energy efficiency potential. En-ROADS stands for Energy Rapid Overview and Decision-Support.
En-ROADS is a high-order, non-linear differential equation model built originally and contemporaneously in Vensim software. We then translated En-ROADS into WebAssembly via a tool we built with Todd Fincannon called SDEverywhere so that it can run in a web browser. When a user moves a slider, the En-ROADS application calculates the results from ~14,000 equations, with a time step of ~45 days, over 110 years from 1990 to 2100, in 60 milliseconds.
If you like En-ROADS, you may appreciate exploring the larger, more disaggregated models that our modeling team used to test and calibrate our simulator. One group of models is the Energy Modeling Forum out of Stanford University, which includes 18 energy-economy and integrated assessment models.
All assumptions, equations, and parameters are documented in the En-ROADS Reference Guide (380 pages).
A brief overview of the insights from academic literature supporting the need for En-ROADS is here.
Below, you can see the main En-ROADS interface.
En-ROADS in the Media
Quotes on En-ROADS
En-ROADS teaches us that while it is still possible to avoid dangerous climate change, there are indeed no silver bullets to reach this goal, and we have our work cut out for us.
Eileen Claussen, President, Center for Climate and Energy Solutions (C2ES)
En-ROADS is useful as a way to influence government, business, and public opinion to think, “Yes, it is possible to keep greenhouse gas concentrations below 450 ppm and temperature increase below two degrees.”
Alfredo Sirkis, Brazilian Congressman
I think we all walked away with a better understanding of the complex energy and climate system and hope in our collective ability to drive a more sustainable future.
Jessica Thomas, Director, Business Sustainability Collaborative
From a personal perspective, I found the session very useful and the capability of the model, its speed and ease of use are definitely beneficial to get the key interdependencies and challenges seen in real time and so help to stimulate discussion and debate within a group.
Gareth Davies, Pöyry Energy Consulting
Until your course this week, I’d pretty much put the environment out of mind. But with your system dynamics model, I feel that I understand the levers in a deeper way and more structured so that I could explain it to others.
Bruce Pon, Management Consultant and MIT Business Dynamics student