The International Energy Agency's detailed quarterly report on developments in energy prices and taxes in OECD and selected non-OECD Countries.  Prices are provided at all market levels: import prices, industry prices and consumer prices.  The statistics cover main petroleum products, gas, coal, and electricity and prices are provided in both national currencies and in US dollars. Coverage is provided as far back as 1980 on an annual basis and 2003 on a monthly or quarterly basis.  This issue's feature article covers the importance of price signals in liberalised electricity markets.