The State of New Hampshire aims to reduce its GHG emissions by 20 percent from 1990 levels by 2025 and 80 percent below 1990 levels by 2050 (DES 2009:24-25). Almost all scientific sources recommend a reduction of 80 percent by 2050, which is the amount of GHG reduction deemed necessary by the United Nations’ Intergovernmental Panel on Climate Change to keep temperatures from exceeding a 2-degree Celsius (°C) increase. The HHS CAP aims to align with these recommendations, as described in the following section.