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Site Archives

CARMA Notes: Future Data


One of CARMA’s rather unique features is the inclusion of data about the future. The v3.0 data contains entries for year 2004, year 2009, and the “Future”. All three points in time are displayed on any of the detail pages at CARMA.org (for example: http://carma.org/plant/detail/44204). Many CARMA users are interested in information about future developments [...]

CARMA Notes: Corporate Data


As in previous releases, CARMA v3.0 includes information about the electricity production and emissions of corporate entities involved in power generation. Every plant in the CARMA database is assigned to a company. The vast majority of that information comes from a proprietary, commercial database underpinning CARMA. In some cases, corporate ownership of U.S. plants is [...]

CARMA Notes: Geographic Data


CARMA v3.0 greatly improves both and scope and quality of geographic information provided for individual power plants. Basic information like country, state/province, and city comes from a proprietary, commercial database of global power plants. Similar data is provided for U.S. facilities by the Department of Energy (DoE). This raw data is processed with an algorithm [...]

CARMA Notes: Data Accuracy


Although CARMA incorporates all known major public disclosure databases, the majority of the site’s data is necessarily estimated using statistical models. This will hopefully change in the future as governments and companies become more open about the source of global warming pollution, but for now estimates are unavoidable. So, how accurate are CARMA’s model estimates? [...]

CARMA Notes: Methodology


Perhaps the most common question from CARMA users is: “Where do the figures on the site come from?” There is a brief answer to this question in the site’s FAQ section. A detailed CARMA v3.0 technical paper provides a complete answer to that question. This blog post aims to provide something in-between: sufficient detail for [...]