My knowledge of the energy sector Flashcards
According to the IPCC, wood burning releases less CO2 than bituminous coal.
True or false?
False - wood burning releases MORE CO2 than bituminous coal
Reference: IPCC, ‘Guidelines for National GHG Inventories, Volume 2 (Energy)’, 2006
Wood biomass is assumed to be carbon neutral.
What does this mean?
Why is it incorrect in practice?
That the carbon released by wood burning is sequestered by growing new trees, creating net zero emissions.
For wood biomass to be carbon neutral, the rate of emissions from wood burning must equal the rate of uptake from forest growth - not the case.
Carbon debt period: time lag between emissions being released and forest regrowth.
Forests take decades to grow!
We should only plant trees where they naturally grow.
Name 3 places we should NOT plant trees and explain why.
Peatland/wetland:
Anoxic conditions prevent decomposition = carbon store. Draining peatland to plant trees releases massive amounts of CO2, e.g. UK in the 80s/90s.
Savannah/grassland:
Naturally fire-prone landscapes. Planting = more fuel for fires.
Tundra:
Natural low-lying vegetation gets covered by snow = albedo, contributes to cooling effect. Planting tall, dark trees reduces snow cover, absorbs heat, reduces cooling effect.
Name 3 problems with converting natural forest to biomass plantation.
- Reduces AGB - mature trees and diverse carbon stocks (shrubs, deadwood, leaf litter) lost
- Reduces BGB - removal of residue disturbs soil
- Monoculture reduces biodiversity, genetic diversity and therefore adaptive capacity of the ecosystem
Why has biomass been grouped with other clean energy sources?
Give 2 reasons.
- The false assumption that it is carbon neutral
- The UN reporting guidelines state that emissions are recorded in the felling country but not the combustion country; makes emissions look artificially low
Why has the biomass industry grown so much in recent years in the UK?
It receives the same subsidies as wind and solar under the 2012 UK Bioenergy Strategy. This was a means of fulfilling the EU’s Renewable Energy Directive.
Give 3 facts about the UK biomass sector.
- We are the largest global importer of wood pellets - approx. 40% in 2017 (SA report, 2019)
- Due to demand, we are starting to use virgin not waste wood
- Demand is predicted to increase
Where are the biggest emerging biomass markets and why is this a problem?
Japan and South Korea
Two massive economies, threatens the nearby Asian tropical forests and Russian boreal forests to meet demand
Why is increasing global demand for biomass a problem for climate targets, aside from emissions/carbon debt?
To meet demand, companies might start planting trees in places unsuitable for tree growth: peatland, savannah and tundra
There are policy instruments that can drive transition to green economy.
Name 2 incentives.
- Feed-in tariffs: payments made to businesses generating their own electricity via methods that do not deplete natural resources, proportional to the amount of power generated. Popular, good way to intro green energy to the system.
- Carbon taxation: ‘polluter pays’, raises the cost of brown business. Unpopular as costs often paid by the consumer.
There are policy instruments that can drive transition to green economy.
Tell us about clean energy subsidies.
- Reduces the supply costs of green products
- Encourages investment from the private sector (less risk as less capital lost if the investment fails)
There are policy instruments that can drive transition to green economy.
Tell us about fossil fuel subsidies.
- Reduces project costs for FF companies
- Encourages investment in FFs from the private sector
- Ensures FFs dominate the market as renewable products more expensive in comparison
Outline 6 problems with fossil fuel subsidies, aside from encouraging emissions.
- Expensive - can cause debt and fiscal crises
- Inefficient - same money could make a bigger impact elsewhere
- Liability - when FF price increases, so does the cost of subsidising them
- ‘Regressive’ - benefit the wealthy more than the poor (only a small proportion of subsidies reach the lowest quintile)
- Slow adoption of renewable tech because they make FFs cheaper
- Often corrupt - illegal diversion of subsidised product has been known
What is a Green Bond?
A bond where the proceeds can only be used to finance green projects
When was the first Green Bond issued and by who?
2008 by the World Bank
What are the Green Bond Principles and when were they released?
A set of voluntary guidelines that provide a 4-step methodology for creating a Green Bond.
First published in 2014.
Green Bonds are only issued by multilateral banks.
True or false?
False - initially they were, but now they’re issued by banks, governments, municipalities and even multinationals e.g. Toyota.
Green Bonds are becoming increasingly popular in the developing world. True or false?
True - in countries like Brazil, Nigeria and India
Give 4 benefits of a Green Bond.
- Easy to identify green projects to invest in
- Allows portfolio diversification, reducing exposure to CC risks
- Transparent because they are publicly traded
- In-depth dialogue in the reporting process - collaboration and improvement
Give 3 challenges of Green Bonds.
- Lack of universally agreed standards and certification -> GREEN WASHING
- Prevailing short-term financial goals: monetary policy looks ~2-3 years ahead, physical assets ~10 years, but CC is long-term.
- Limited understanding of CC risks
Name the categories of CC risk.
Physical: loss of life, assets and supply chains due to natural disasters.
Transition: businesses not prepared for the low-carbon transition = stranded assets
Biodiversity: system collapse due to a loss of biodiversity, e.g. a loss of pollinators would cause agribusiness to collapse
What are stranded assets?
Those that de-value or fail to generate economic returns
Give an example of why we need meaningful dialogue between scientists, industry and government.
Biomass falsely perceived as carbon neutral, governments gave subsidies to the private sector, created a massive industry that is growing but is completely misaligned with climate targets.
Give benefits of renewable energy over FFs.
- No emissions
- Less/no pollution
- Energy security (infinite source)
- Reduced exposure to CC risk: FFs more susceptible to market fluctuations, as C19 has shown
What is ‘built capital’?
Give 2 key examples of built capital.
Any mechanism, building or technology constructed by humans.
Energy and transport.
Outline two challenges to the UK energy sector (domestic level).
Air pollution: many areas above the WHO safe limit for particulate matter, likely to exacerbate the current pandemic and cause future public health crises (respiratory disease, been linked to depression etc.)
Energy poverty in low income groups: many without adequate energy access, will be exacerbated by C19 due to unemployment and recession.
Outline a challenge for the energy sector at global level.
Relate it to the UK.
The transition to green economy in response to CC.
Different sized economies have different responsibilities.
Advanced economies like the UK must lead in decarbonisation. This presents immediate challenges at all levels of the economy.
The transition to green economy presents immediate challenges at all levels of the UK economy.
Outline 3.
- Development/deployment of sustainable infrastructure
- Changing consumer behaviour
- More effective regulation
The development/deployment of sustainable infrastructure needed for green transition presents numerous challenges.
Outline 5.
- High upfront costs - need investment for R+D and deployment
- Issue of scale - can we produce enough to cause costs to fall and roll them out at scale?
- Emissions and waste generated from R+D/deployment
- Adjustment hiccups that come with changing to a new system
- Job losses for those in polluting sectors being replaced
The development/deployment of sustainable infrastructure needed for green transition creates numerous opportunities.
Outline 3.
- Chance for public-private partnerships to raise capital: fosters collaboration reduces risk
- New business opportunities for the private sector.
- Job creation in new green sectors
The change to consumer behaviour needed for green transition presents numerous challenges.
Outline 3.
- Incentives like carbon taxation cause rising prices that upset the consumer - not good for gov or private sector
- Those from low income households may not be able to afford transition elements, e.g. a clean car
- Consumers may not understand the change needed/why due to poor CC education and lack of public discourse (though this is improving)
The increased regulation needed for green transition presents numerous challenges.
Outline 2.
- The imposition of laws and regulations upsets industry sectors and can elicit strong lobbying from them.
- Requires the establishment of new agencies, e.g. Greenpeace recommends a Warm Homes Agency for C19 recovery (Green Buildings), but this requires funding and expertise - takes time to set up.
Define the National Grid.
The network that connects all of the power stations in the UK to make sure that everywhere has access to electricity.
Define the energy sector.
In essence, what does it do?
Name its 3 components.
The totality of all the industries involved in the production and sale of energy.
Makes energy available to power the economy.
Components:
- Energy production (fuel extraction, manufacturing, refining)
- Energy sale
- Energy distribution
Name the different industries that make up the energy sector.
There are .
- FF companies (oil, gas, coal)
- Electrical power (electricity generation and distribution, e.g. the National Grid plc)
- Nuclear power
- Renewable energy (hydro, wind, solar, bioenergy)
- Traditional, i.e. firewood which is still used in developing nations
Is the transport sector part of the energy sector?
Define the transport sector.
No, but they are closely linked.
The part of the economy that provide services to move goods or people.
Define fossil fuel.
What are some examples?
A natural fuel formed in the geological past from the remains of living organisms.
Coal, oil and gas.
Green public procurement can also drive the transition to green economy. What does that mean?
When authorities procure public goods/services with reduced environmental impact.
What is meant by ‘whole systems’ approach to energy?
Give 3 points.
Looking at the energy landscape in its entirety, so considering economic, environmental, social and technological elements and how they interact to produce the whole.
Broad, multi-disciplinary approach.
From start to end of the energy life cycle.
Who are the Committee on Climate Change (CCC)?
The gov’s official climate advisors
What is energy storage?
Battery tech
Renewables are an intermittent energy source so we need to store excess energy for times when there is less wind/solar etc. available
What is DSR?
Demand-side response
Intelligent energy usage, basically using energy in the locations its most needed during peak times whilst turning it down in others
E.g. supermarkets turn down their freezers/lights when everyone is watching the Bake Off final
What is energy poverty?
A lack of access to modern energy services
Happens in developing countries
What is fuel poverty?
When a household cannot afford to keep adequately warm at a reasonable cost, given their income
Happens in developed countries like the UK
What is the 2012 UK Bioenergy Strategy?
A strategy that provides a holistic view of biomass uses
Used to inform policy decisions on electricity, heat and transport
What is the EU Renewable Energy Directive?
When was the original one?
When was the updated one?
A set of rules for the EU to achieve its renewables targets (% contribution)
Original: agreed in 2009 for 2020
Recast: agreed in 2018 for 2030, composes two different regulatory mechanisms (targets for each country until 2020, joint target until 2030)
What is an ‘energy vector/carrier’?
Give two examples.
A convenient way to store, move and use energy extracted from other sources
E.g. electricity and hydrogen
The energy vectors electricity and hydrogen can be decarbonised. True or false?
True - by using renewables as the energy source
What is floating offshore wind (FOW)?
Wind turbines attached to structures that float on the water. They are tethered to the seabed to stop them floating away.
What is the advantage of floating offshore wind over fixed?
Fixed offshore wind is limited to depths of approx. 165ft, meaning floating offshore wind can be deployed in more places to expand energy capacity.
How does floating offshore wind stay upright?
They use the iceberg principle; most of the mass is underwater.
Why are European oil majors interested in floating offshore wind?
Because they can capitalise on their offshore expertise (oil extraction) to diversify their product and lead the market.
Who is currently leading in floating offshore wind?
Where is the world’s only commercial floating offshore wind farm and what is it called?
Europe
Scotland, called Hywind Scotland
Which three well-known European oil majors are investing in floating offshore wind?
Equinor, Shell and Total
Which unit is electricity measured in?
Watts, or multiples of.
Smaller devices are measured in watts.
Larger devices are measured in kilowatts.
How many watts are in the following:
1 kilowatt
1 megawatt
1 gigawatt
1 terawatt
1 kW = 1000 W (one thousand watts)
1 mW = 1,000,000 W (one million watts)
1 gW = 1,000,000,000 W (one billion watts)
1 tW = 1,000,000,000,000 W (one trillion watts)
Define…
Nuclear fission
Nuclear fusion
Which one releases more energy?
Which one is used commercially and why?
Fission = splitting of a heavy, unstable nucleus into two lighter nuclei
Fusion = combining two lighter nuclei
Fusion releases more energy
Fission is used commercially as it can be controlled, plus the conditions needed are less expensive to generate.
What is the Green Homes Grant?
A government grant for homeowners in England to help pay for certain energy-efficient home improvements.
How much can you get through the Green Homes Grant?
The maximum amount available is £5,000, or £10,000 if you get certain benefits.
What can the Green Homes Grant help to pay for?
- Double or triple glazed windows
- Floor, wall or roof insulation
- Energy-efficient doors
- Solar thermal energy systems
- Heat pumps
- Thermostats and heating controls
What is the problem with the Green Homes Grant?
There is a lack of skilled tradespeople to fit the home improvements. Currently, many consumers have applied but there are not enough suppliers signed up to the scheme.
The scheme is only due to run until March 2022; this is not enough time to incentivise tradespeople to take time off work/lose money to attend training.
What is the Warm Home Discount?
An annual credit paid by energy companies into the electricity account of eligible consumers.
Is the Warm Home Discount voluntary?
It is compulsory for large energy companies, though many smaller suppliers voluntarily offer it.
How much is the Warm Home Discount for winter 20-21?
£140 credit
Who is eligible for the Warm Home Discount?
Two groups:
Core group - those who received the Guaranteed Credit element of Pension Credit
Broader group - those on a low income or with certain means-tested benefits
What is Direct Air Capture (DAC)?
Capturing carbon dioxide from the air
How does DAC work?
There are multiple methods:
Using a chemical that selectively binds CO2 from the air and releases it when heated
Systems that use changes in temperature, humidity or electrical charge to capture/release CO2
DAC can be used in ‘carbon recycling’. How?
The pure CO2 can be used in short-lived products, where after use the CO2 is released back to the atmosphere.
DAC can be used in long-lived products like low-carbon cement. What is this called?
A carbon-to-value supply chain
There are concerns about DAC’s energy demands. Why?
Because the concentration of CO2 in the air is so low, large amounts of energy are needed for DAC. This must be low-carbon energy to maximise it’s climate impact.
Using low-carbon energy may divert it from emissions reductions purposes and require large areas of land.
DAC is put into ‘geologic storage’. What does this mean?
What are the concerns?
CO2 is injected into geological reservoirs (underground).
Pipeline damage, leakage, seismic activity, water pollution.
DAC can be used in ‘enhanced oil recovery’. What is this?
What is the concern?
Where CO2 is pumped into declining oil wells to increase output.
It is being used to prolong the fossil fuel industry, thereby negating DAC’s benefits.
What is a Regulated Asset Base (RAB) funding model?
A type of economic regulation typically used in the UK for infrastructure assets such as water, gas and electricity networks.
Why is RAB funding used?
To incentivise private investment into public projects by providing a secure payback, i.e. guaranteed returns on investment for developers.
Under RAB funding, who takes ownership of the assets and operating costs?
Bear in mind RAB is used to fund public projects.
The private company