While it is important to be transparent about the cost of a solution, this is commercially sensitive information for many of our registrants. For that reason, we have presented the solution cost according to a dollar scale, with the least expensive represented by $ and the most expensive represented by $$$$$. Being the most expensive does not necessarily mean a solution has a low return on investment. You can see the payback period as well as the $/tCO2e on the solution pages. 

We categorized solutions as Utilities (energy-related investments), Process Machinery (any piece of equipment purchased to deliver the process), Ancillary/Systems (support or monitoring for the production process). and Programs (programs that have a service cost as well as investments in improvements as a result of the program recommendations). This is the first iteration of our scale which will become more detailed and nuanced over time. You can find the ranges here.