Second cohort of projects enters comment period

Last month, we saw seven projects successfully go through the TerraPass comment period. To our knowledge, we’re the only carbon offset company to incorporate public stakeholder input into our project selection process.


A new engine will generate clean energy from landfill gas at Worcester County Landfill.

Today we’re adding two more projects to the mix: a brand new landfill gas to energy project in Maryland and a cow power project in upstate New York. Sharpen your pencils, and let us know what you think after reading the reports on the two new projects.

A special thanks for your comments. Based on feedback from the last comment period, we’ve adjusted our Project Information Reports to include reporting on the negative environmental impacts of these projects, such as the concrete and steel used in a dairy digester. As we did last time, we’ll summarize and respond to the comments we receive and if appropriate adjust our practices. With your help TerraPass will continue to lead the charge for quality in the carbon offset market.

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  1. Hank Pierce - April 22, 2008

    This is a great idea but it is not new. Many years ago I read about a farmer that installed Methan digesters for is animal waste and compost and heated his house, barn, and used the methan to offset the cost of fuel for his machinery. The government thought that he was cheating them out of taxes. Maybe that is why it is taking so long to get these process in operation.
    The waste went back into the land.
    Hank Pierce

  2. Aaron A. - April 23, 2008

    I think what Mr. Arnold meant was that these projects are new; according to TerraPass’s write-up, the Maryland landfill digestor won’t start running until June. You’re correct, though, in that the technology has been around for a while. The first known anaerobic digestor went live in 1859.
    — A.
    Read more about it: (PowerPoint)
    Some of the details are a little egghead-ish, but overall I think it provides a solid primer on anaerobic digestion for us non-scientists.
    This isn’t quite as educational, but if you don’t like PowerPoint, there’s also this publication from Ireland’s Environmental Protection Agency. (pdf)
    “Based on existing energy prices anaerobic digestion is generally not economically viable. However if projects were compensated or subsidised for the environmental benefits they generate, anaerobic digestion would be a feasible commercial proposition.”