The article explores how changes in monetary policy impact energy prices. By analyzing data from different monetary policy events, the researchers found that unexpected increases in interest rates lead to lower oil prices. They also discovered that the Federal Reserve's asset purchase programs affect oil prices similarly to interest rate cuts. The value of the U.S. dollar exchange rate plays a significant role in how monetary policy influences oil prices. Additionally, news about the U.S. economy and inventories can also affect energy prices throughout the day.