CARMA’s operating philosophy is to maximize possible transparency, so it’s only fair to shed some light onto how we calculated plant data. For the full CGD working paper, please read Calculating CARMA, Global Estimation of CO2 Emissions from the Power Sector by David Wheeler and Kevin Ummel.
CGD decided to focus on the power sector because [...]

As you may know, we just released a series of Widgets to help you explore CARMA. We’ve been looking at some of the plants tagged using the Improve Your CARMA widget, and there’s a lot of really interesting results to share. The following are just a few plants that you helped find…

I started writing this post thinking I’d find some other Environmental/Green-related API’s to mash up with CARMA’s data. At the moment, though, I couldn’t find many data sources that make available a comparable data set as openly as the CARMA API does. It’s disappointing, as this represents a barrier to creating really interesting applications. The bar [...]

At some point, working with any API involves making HTTP requests to retrieve data, followed by decoding that into a useful data structure for your own application. In the case of the CARMA API, there are five methods that can be called (getPlant, getCompany, searchPlants, searchCompanies,and searchLocations), and data can be returned as either JSON [...]