• A 2011 article in the Journal of Business Ethics ranked multiple offset providers, with 11 getting the highest marks: 3 Degrees, The Carbon Fund, TerraPass, EcoSecurities, Carbon Clear, Climate Friendly, Tricorona Green, Pure, Climate Care, Climate Neutral Group and My Climate.
  • In 2008, the nonprofit education and consultancy organization Carbon Concierge developed a modifiable Carbon Offset Provider Evaluation Matrix [pdf] with which it evaluated 17 North American offset providers. The analysis ranked Native Energy and Climate Trust highest, followed by e-Blue Horizons, Sustainable Travel International and TerraPass. The criteria used in the matrix include offset quality, project location and offset traceability, project transparency, social benefit, third party evaluation and education.
  • An increasing number of companies offset emissions for customers, or offer the ability to do so for a small additional fee. Volkswagen and Land Rover offset the first year or first 45,000 miles, respectively, on a new purchase; UPS will offset shipping; and several airlines offer offsetting for a small additional fee.