HOPU is published as part of the State Heating Oil and Propane Program (SHOPP), a joint effort between EIA and several state energy offices to collect state-level residential heating oil and propane price data from October through March in states where heating oil and propane use is common. SHOPP collects residential heating oil and propane prices for 21 states. In 18 additional states, only propane prices are collected; in the District of Columbia, only heating oil prices are collected. SHOPP also provides wholesale heating oil prices for 25 states and propane prices for 23 states. EIA publishes weekly SHOPP price ... (full story)