Introduction to energy systems Flashcards

1
Q

Q: What is DUKES?

A

A: Digest of UK Energy Statistics the main source of UK energy statistics.

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2
Q

Q: What does the Climate Change Committee do?

A

A: Advises the UK government on reducing greenhouse gas emissions.

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3
Q

Q: What are the GHG emissions for coal gas and renewables (gCO₂/kWh)?

A

A: Coal: 850 gCO₂/kWh Gas: <400 gCO₂/kWh Renewables: 0 gCO₂/kWh

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4
Q

Q: Why was the Central Electricity Authority formed?

A

A: To avoid inefficiency from isolated power units and enable shared reserves.

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5
Q

Q: Why were power stations built near coal fields?

A

A: To reduce coal transport costs and environmental impact.

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6
Q

Q: What industries were privatised under Thatcher’s government?

A

A: Telecoms British Gas and water companies.

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7
Q

Q: Why was privatisation challenging?

A

A: Regulating private monopolies was harder than regulating national ones.

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8
Q

Q: What caused the demand for electricity to slow down in the 1970s?

A

A: The oil crisis.

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9
Q

Q: Why was nuclear power costly in the 1970s?

A

A: Due to the lack of mass-produced standardised plants.

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10
Q

Q: What companies emerged from CEGB’s breakup?

A

A: Eon RWE Nuclear Electric and Independent Power Producers.

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11
Q

Q: How was the electricity system structured in Scotland?

A

A: Managed by Scottish Power and Scottish Hydro.

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12
Q

Q: Why are transmission and generation separate in the UK?

A

A: To avoid land conflicts and limit foreign influence.

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13
Q

Q: What key reform occurred in 1998?

A

A: Capacity payments were introduced to encourage power plant construction.

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14
Q

Q: What did the government enforce in 2001?

A

A: Companies had to divest mid-merit power generation to increase competition.

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15
Q

Q: Why was entering the energy market difficult for new companies?

A

A: They lacked experience in the energy sector.

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16
Q

Q: Why restructure the energy market instead of central planning?

A

A: To allow market competition enabling better information discovery.

17
Q

Q: What is central dispatch?

A

A: A system where electricity generation follows demand-capacity graphs.

18
Q

Q: What is decentralised self-dispatch?

A

A: Buyers and sellers negotiate prices directly in the market.

19
Q

Q: What is baseload power?

A

A: A power source with high capital but moderate variable costs.

20
Q

Q: What is mid-merit power?

A

A: Gas-powered electricity used for intermediate demand levels.

21
Q

Q: What complicates wind power’s capacity planning?

A

A: Its variable nature.

22
Q

Q: Why are generators cautious in the energy market?

A

A: Uncertain revenue streams due to fluctuating supply and demand.

23
Q

Q: Why do market failures occur in the energy sector?

A

A: Due to inefficient carbon pricing and incomplete energy contracts.

24
Q

Q: What solution was introduced to support renewables?

A

A: Central auctions for renewable energy projects.

25
Q

Q: What happens if energy capacity is unconstrained?

A

A: Generators meet the same price (P1 = P2).

26
Q

Q: What issue arises if capacity is constrained?

A

A: Price differences may prevent investment returns.