This paper provides an overview of existing measures relating to non-product-related processes and production methods (PPMs) adopted in the context of climate-change-mitigation policies, especially those linked to the life-cycle greenhouse-gas (GHG) emissions of particular products. Such domestic PPM-related requirements and schemes are important policy tools for promoting sustainable development and are aimed at addressing GHG emissions resulting from the activities involved in producing, processing and transporting the product to the final consumer. Their ostensive purpose is to promote better environmental outcomes and to ensure that domestic climate-change policies and incentives do not inadvertently undermine other environmental objectives. Even though the general objectives of the reviewed regulations and private schemes are comparable (e.g. the promotion of renewable-energy sources, or provision of information on the carbon footprint of goods), the approaches, level of detail, choices of instruments and targeted environmental characteristics vary considerably from country to country and from scheme to scheme. Some regulations rely more or less extensively on market mechanisms, attaching price premiums to certain types of products. Others introduce command-and-control provisions limiting the use of certain PPMs, variously defined in different countries. Still others target certain types of fuels eligible for public support, with varying eligibility criteria. Private schemes mainly use environmental sustainability claims to secure consumer preference. The choice of different instruments presumably entails different trade impacts. However, all of the reviewed measures and schemes are fairly new, and experience with their application and therefore their potential trade effects has so far been relatively limited.
