The En-ROADS User Guide contains information about the ranges of each slider in the “Slider Settings” sections throughout the guide.

Each of the energy supply sliders is set to reflect a similar percentage cost increase or decrease for each input level. For example, the “highly taxed” input level is +60% to +30%, which translates to +$2.00 to + $1.00 (U.S. dollars) added to every thousand cubic feet of natural gas, +$30 to +$15 added to every barrel of oil, and +$40 to +$20 added to every ton of coal. 

The maximum ranges of the non-energy supply sliders (e.g. the Transport - Energy Efficiency slider, or the Methane & Other Gases slider) are not equivalent. For example, the maximum range of the Carbon Price slider is $250/ton, which is equivalent to $660/tce tax on coal. The maximum range of the Coal tax slider is $110/tce. 

Similarly, the difficulties of implementing the policies of each slider are not equivalent. That is, implementing the maximum (or minimum) values of each slider does not present an equivalent degree of difficulty in the world. For example, moving the Transport Electrification slider to its maximum (5% per year) is not necessarily as difficult as reducing deforestation by 10% a year (moving the Deforestation slider to “highly reduced”). 

Think of the sliders as interventions in the system. There are feedbacks that play out within the system when one slider changes that relate to the impact other interventions will have. Moving a slider will produce results that affect the impact other sliders will have, but you won’t see those sliders move. 

For example, instituting a Carbon Price will lead to lower energy intensity of GDP (greater energy efficiency). You won’t see the energy efficiency sliders of Transport or Buildings & Infrastructure move, but you can see the line in the “Energy Intensity of GDP” graph shift downwards. Similarly, if you subsidize renewables, the electric share of buildings and industry and transportation will increase, which you can see in the “Electric Share of Final Energy - Bldg & Ind” and “Electric Share of Final Energy - Transport” graphs. Any further electrification that you add with the Electrification sliders will build on what is already there. 

We selected the ranges of the sliders to reflect a distribution of possible policy proposals, and we acknowledge that some policy proposals may be outside the range of the sliders.