Energy Indicators for Sustainable Development: Guidelines and Methodologies International Atomic Energy Agency United Nations Department of Economic and Social Affairs International Energy Agency Eurostat European Environment Agency

(c) Data References: The primary international sources of data are the FAO and the 
UNECE, which collect data on forest area and fellings on a regular 10-year basis. 
Data on harvested fuelwood are available from national ministries responsible for 
forestry. CRW data for many countries are available in the IEA statistics. 
REFERENCES 
• Eurostat, 2000. Forest and Environment, Statistics in Focus. Eurostat 17/2000. 
Luxembourg: Eurostat. 
• FAO, 1980, 1990 and 2000. Forest Resources Assessments. Rome, Italy: Food 
and Agriculture Organization of the United Nations. 
• FAO, 1993. Forest Resources Assessment 1990: Tropical Countries. FAO 
Forestry Papers no. 112/ FAO. Rome, Italy: Food and Agriculture 
Organization of the United Nations, Forestry Department. 
• FAO, 1999. State of the World’s Forests. Rome, Italy: Food and Agriculture 
Organization of the United Nations, Forestry Department. 

---

115 
• Harcharik, D.A., 1995. Forest Resources Assessment 1990: Non-Tropical 
Developing Countries. Rome, Italy: Food and Agriculture Organization of the 
United Nations, Forestry Department. 
• UNECE, 2000. Temperate and Boreal Forest Resource Assessment (TBERA). 
New York, NY, USA, and Geneva, Switzerland: United Nations Economic 
Commission for Europe. 
ENV7: Ratio of solid waste generation to units of energy produced 
Brief Definition 
Amount of solid waste (excluding radioactive 
waste) produced annually from activities related 
to the extraction and conditioning of primary 
fuels, and waste produced in thermal power 
plants, expressed as weight of waste per unit of 
energy produced 
Units 
Tonnes of waste per unit of energy produced 
(tonnes of oil equivalent [toe], megawatt hours 
[MWh] or specific units of fuel produced)