Week 1 Flashcards
Household energy consumption
- picture*
- ) peak around 18-24
- ) cooling stays the same during the day while other change like cooking and washing and light
3 main approaches to energy
- Earth System: Modelling and forecasting; greenhouse effect, carbon
cycle, fossil fuels; global data and models; systems thinking - Technological development: sustainable energy production;
systems for transmission and distribution; storage; MLP and
transition theory; futuring; global and national data - Practice Theory: intersection of practices and infrastructures in two
main sectors (built environment and mobility); changing demand
Energy transition
- Resource -> new sources of energy
- Technical -> efficiency
- Commodity -> price
- Services -> practices
What is energy?
Physics
Energy is the ability to do work.
(Work is the ability to exert force
and cause change)
Energy as technical problem (neoclassical economics) Efficiency increases the amount of output that can be produced from a given quantity of resources and thereby increases the amount that can be consumed
World primary energy supply
84% Fossil fuels (27% coal, 24% gas, 33% oil)
- 3% Nuclear
- 4% Hydro
- 2% Wind
- 7% Biofuels, Geothermal and other
- 1% Solar
Why is the peak a problem?
• Electricity grid (infrastructure) • Meeting demand with ‘on-demand’ source of energy (‘carbon intensive) Recall: fossil system is system in which production follows demand • Not economic more expensive energy (market prices)
Global Energy Consumption
29% industry 33% Transportation 27% residental 6% commercial 3% other
Energy Efficiency:
1) ‘more services for the same energy input, or the same services for less energy input’
2) reduce the amount of energy used
3) In relation to buildings and building technologies, more efficient solutions are expected to perform as well if not better than those they replace.
4) Reduce the carbon emissions associated with the design and operation of things like buildings, domestic appliances, and heating and cooling technologies, or with the organization of bureaucratic, business or industrial processes.
Energy Efficiency Criticisms:
1) First, that efficiency strategies reproduce specific understandings of ‘service’ (including ideas about comfort, lighting, mobility, convenience etc.), not all of which are sustainable in the longer run.
2) Second, that concepts and measures of efficiency depend on ‘purifying’ and abstracting energy from the situations in which it is used and transformed
3) Rebound effect
people do not use energy for its own sake
they use it as part of accomplishing social practices at home, at work and in moving around.
Understanding energy means
understanding the sets of practice that are enacted, reproduced and transformed in any one society, and of understanding how material arrangements, including forms of energy, constitute dimensions of practice. (Shove & Walker, 2014, p. 48
Rebound effect:
As is widely recognized, money saved through the adoption of more energy-efficient technologies (a car or central heating boiler) can be used in ways that have negative consequences for energy demand in the ‘system’ or society as a whole, e.g. enabling more travel, or the construction of larger homes.
Similarly, people with better insulated properties might take back ‘comfort’ (higher temperatures) rather than reducing the energy they consume (Hamilton et al., 2016).
Societies become ‘entrapped’ by the material relations of which they are a part, and that over time, forms of energy and resource dependency have become increasingly and perhaps irreversibly embedded.
the effect of improving the efficiency of a factor of production
that the effect of improving the efficiency of a factor of production, like energy, is to lower its implicit price and hence make its use more affordable, thus leading to greater use. (Herring, 2006, p. 10)6
forms of energy production and use are
either the cause or the consequence of changing political, economic and technical systems
definition of energy
‘the ability to do work’, but this time with the possibility of drawing on an appropriately sophisticated account of what that ‘work’ entails and how it changes.