Power Facts and Figures Flashcards
LCOE Equation
πΏπΆππΈ (Β£/ππβ)=(πΆπ΄ππΈπ+πππΈπ+π·πΈπΆππ)/πΏπΌπΉπΈππΌππΈ πΈππΈπ πΊπ ππ ππ·ππΆππΌππ
Three Gorges
10 years contruction, 26 turbines - 700MW each, installed capacity of 20.3GW, 642km2 land inundated and 1.13 million people displaced
Severn Barrage
9m diameter bulb turbines producing 4.3% UKβs electricity
2GW - 8.6GW max
Β£17 billion to build
11m tidal range Bristol channel
6p/kWh is 3.3p more than typical selling price of 2.7p/kWh
Gas turbine power plants
Efficiencies above 55%
Baglan Bay 525MW CCGT plant 60% efficiency
Geothermal
1000-2000 times less CO2 output than fossil fuel plant
Transformers
Boost electricity to 400,000 volts
Grid transmission losses
5-10%
Nuclear
1*1inch fuel = 1 tonne coal
Β£92.50/mwhc
Trawsfynydd
470MW magnox reactor 1965-91 Β£103 million decommissioning will add Β£29.75/mwh to every mwh produced (69TWh during operations)
Wind Turbine
2MW/km2
20 year life
Β£39/mwh
110GW available offshore wind farms
Biomass
Produces 14% worldβs power
UKs average electricity demand
60GW
Grid balancing
Fridges listening in to frequency fluctuations 50Hz in supply and turning down thermostat
Plan N
5 London sized blobs in transmeditarranean desert - 2000km long transmission line
Carbon Tax
$150 per tonne, domestic users of gas would notice the cost of carbon in their heating bills
$370, carbon pollution would cost enough to significantly reduce peopleβs inclination to fly
$500 per tonne, average Europeans who didnβt change their lifestyle might spend 12% of income on the carbon costs of driving, flying, and heating their homes with gas.
$900 per tonne, the carbon cost of driving would be noticeable
$100 per tonne high enough to encourage investment in renewables and research and efficiency measures
Phone chargers in sub-Saharan Africa
235 million
Energy demand in the developing world
5% per year
Tidal power
1.7GW in planning/development
Tidal turbine velocity for economical operation
2ms-1
Total tidal range capacity
25-30GW
Swansea Lagoon
360MW capacity
Transport
1/3 UK energy use
Current UK energy
20% nuclear, 20% wind, 40% gas
Energy Trilemma
Energy security - leads to conflicts (e.g. Suez, Irag), energy equity (energy poverty affects the poorest), environmental sustainability (low carbon sources can be expensive)
