Dimension

Indicator

Sources

Observations

Capacity, access and availability

Generating capacity per capita
(MW per capita)

Generating capacity: Department of Energy and Climate Change DUKES Table 5.7, http://www.decc.gov.uk/assets/decc/statistics/source/electricity/dukes5_ 7.xls
Population data: ONS, http://data.london.gov.uk/datafiles/demographics/ons-mye-population-totals.xls

Geographical coverage: United Kingdom

Generating capacity per economic unit of output
(MW per billion USD)

Generating capacity: Department of Energy and Climate Change DUKES Table 5.7, http://www.decc.gov.uk/assets/decc/statistics/source/electricity/dukes5_7.xls

Geographical coverage: United Kingdom

GDP measure: OECD, Gross domestic product (expenditure approach), constant prices, constant PPP extractable here: http://stats.oecd.org/index.aspx?queryid=556

Asset or capacity utilisation

Peak load as a percentage of generating capacity
(percentage)

Simultaneous maximum load met: Department of Energy and Climate Change DUKES Table 5.10,

http://www.decc.gov.uk/assets/decc/statistics/source/electricity/dukes5_10.xls

Generating capacity: Department of Energy and Climate Change DUKES Table 5.7, http://www.decc.gov.uk/assets/decc/statistics/source/electricity/dukes5_7.xls

Geographical coverage: United Kingdom

Service quality and reliability

Unplanned interruptions per 100 customers
(Interruptions per 100  customers)

Customer Interruptions data obtained from the Office for Gas and Electricity Markets (Ofgem) http://www.ofgem.gov.uk/Networks/ElecDist/QualofServ/QoSIncent/Pages/QoSIncent.aspx

Geographical coverage: Great Britain

Unplanned minutes lost per customer
(supply minutes lost per customer)

Customer Minutes Lost data obtained from the Office for Gas and Electricity Markets (Ofgem) http://www.ofgem.gov.uk/Networks/ElecDist/QualofServ/QoSIncent/Pages/QoSIncent.aspx

Geographical coverage: Great Britain
Time coverage: 2005-2009. 2010 value assumed equal to 2009 value

Transmission system availability
(percentage)

Transmission system availability: data obtained from the annual Transmission Performance Reports published by National Grid, http://www.nationalgrid.com/uk/Electricity/Info/performance/

Geographical coverage: Great Britain

Reliability of supply of the transmission system
(percentage)

Reliability of supply of the transmission system: data obtained from the annual Transmission Performance Reports published by National Grid, http://www.nationalgrid.com/uk/Electricity/Info/performance/

Geographical coverage: Great Britain

Asset condition

Transmission and distribution losses as a percentage of total electricity supplied
(percentage)

Transmission and distribution losses: Department of Energy and Climate Change DUKES Table 5.1, http://www.decc.gov.uk/assets/decc/statistics/source/electricity/dukes5_1.xls

Total electricity supplied: Department of Energy and Climate Change DUKES Table 5.1, http://www.decc.gov.uk/assets/decc/statistics/source/electricity/dukes5_1.xls

Geographical coverage: United Kingdom

Carbon emissions

Carbon intensity of electricity generation
(tonnes of CO2e per kWh)

Carbon emissions from electricity generation: European Environment Agency (EEA), http://www.eea.europa.eu/data-and-maps/data/national-emissions-reported-to-the-unfccc-and-to-the-eu-greenhouse-gas-monitoring-mechanism-5 (series "Public Electricity and Heat Production")

Geographical coverage: United Kingdom
Time coverage: 2005-2009. 2010 value assumed equal to 2009 value