Session 4: Renewable energy sources Session 4: Renewable energy sources statisticsstatistics

United Nations Statistics Division

International Workshop on Energy Statistics

24-26 September 2012, Beijing, China

Renewable energy sourcesRenewable energy sources

Important because:

• They address many environmental issues

• Reduce the dependency on fossil fuels

• A number of targets are set at national and international level on the use of renewable energy

OutlineOutline

• Classification

• Measurement units

Relevant SIEC SectionsRelevant SIEC Sections

SIEC 5 Biofules

SIEC 6 Waste

SIEC 7 Electricity

SIEC 8 Heat

HydroGeothermalSolarTide, wave and oceanWindNuclearCombustible fuelsOther

5 Biofuels

51 Solid biofuels

511 Fuelwood, wood residue and by-products

512 Bagasse

513 Animal waste

514 Black liquor

515 Other vegetable materials and residues

516 Charcoal

52 Liquid biofuels

521 Biogasoline

522 Biodiesel

523 Bio jet Kerosene

524 Other liquid biofuels

53 Biogases

6 Waste

Measurement unitsMeasurement units

Fuelwood can be measured in

in volume (stack cubic metres or solid volume)

or

in mass (dry or wet basis)

Important to know the units as they calorific values are different

IRESIRES

No specific measurement units are recommended for national data collection (most suitable for the circumstance)

However, certain units are recommended for dissemination. In particular,

Fuelwood -> cubic metres

Solid fuels -> Metric Tons

Gases -> Terajoules

Waste -> Terajoules

Data itemsData items

They reflect data collected from statistical units

UNSD Annual QuestionnaireUNSD Annual Questionnaire

UNSD Annual QuestionnaireUNSD Annual Questionnaire

Products currently covered:• Fuelwood• Charcoal• Bagasse• Pulp and paper• Vegetable waste• Other biomass and waste• Biogasoline• Biodiesel• Biogas• Municipal Waste• Industrial Waste

Common problemsCommon problems

• Data on renewables are often hard to collect

• Consumption data are often missing

• Transformation into charcoal production is often not reported

We collect statistics through the Annual Energy Statistics Questionnaires

They are then published in two publications and in the Energy statistics database (1950 – present)

Thank you!