Site Prices Update
Last Updated28th June 2022
All calculations on this site are based on current fuel prices, they are checked regularly and calculations are automatically updated.
The costs calculated based on these fuel prices should be regarded as 'good estimates', given that fuel prices vary in different parts of the county and at different time of the year.
The calculations also have different levels of accuracy depending on the nature of the calculation. For example calculating the energy use of a known power output TV is very easy compared to calculating the effect on energy savings when insulating a cavity wall.
Site Calculations
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User PricesFor several of the fuel prices on this site you can now set your own prices and all the calculations on the site will adjust accordingly.
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At Confused About Energy we aim to provide practical, impartial advice on all aspects of energy usage, climate change and ways to save money on energy bills.
All calculations on this site are based on current fuel prices they are checked regularly are automatically updated and were last changed on:-
28th June 2022
The costs calculated based on these fuel prices should be regarded as 'good estimates', given that fuel prices vary in different parts of the county and at different time of the year.
The calculations also have different levels of accuracy depending on the nature of the calculation. For example calculating the energy use of a known power output TV is very easy compared to calculating the effect on energy savings when insulating a cavity wall.
Site Calculations
| Electricity | £0.271 per unit (1 kWh) |
| Economy Electricity | £0.094 per unit (1 kWh) |
| Gas | £0.072 per unit (1 kWh) |
| Domestic LPG | £0.122 per unit (1 kWh) |
| Heating Oil | £0.104 per unit (1 kWh) |
| UK Grid CO2 Emissions | 0.233 kg per kWh used |
The main units used in this site are in the table below, For a complete explanation of power and energy Read More.
| Unit | Name | Detail |
|---|---|---|
| W | Watt | Unit of Power |
| kW | Kilowatt | 1000 watts |
| kWh | Kilowatt hour | Measure of Energy |
| L | Litre | Measure of Volume |
Sometimes these numbers seem to be meaningless, they are so large, we cannot get our minds round them, 18Gt (18,000,000,000 tonnes) how bid is that? and these are not your soft American short tons, these are proper metric tonnes! To provide some perspective we have related this weight to the weight of the great pyramid at Giza, a rough estimate for the weight of the great pyramid at giza is 6 million tonnes. Using this number 18Gt of CO2 weighs the same as about 3000 Great Pyramids (18000Mt÷6Mt). So we need to remove about 8.2 Great Pyramid weights each day, that is quite a lot, but a least we know where we stand.
Population 5183
Some Key Points
- Population is included less as a metric we can or indeed wish to change but more as a measure to comprehend the link between energy use, food production and population.
- Simply put, the more of us there are, the more intensive the agriculture, the more cars we drive, the more houses we have to heat or cool.
- There is a feed back loop with energy and population, the more available the energy the more resources there are for population growth, the more energy we consume.
- The population growth figures come from the UN website.
References
https://data.worldbank.org/indicator/SP.POP.TOTLhttps://population.un.org/wpp/Graphs/Probabilistic/POP/TOT/
https://ourworldindata.org/world-population-growth
Notes
We have written about this before, have a look here fossil fuels food and population. There are many factors which influence population growth but energy availability and use is strongly linked. On the one hand it is fairly obvious that the more of us there are the more energy we use, what is perhaps less obvious is that if more energy becomes available to us it actually creates the conditions where more of us can exist, by providing more resources for things like food and agriculture. In the future the population limit is more likely to come from the slow erosion of the quality of our soils and the ability to continuously grow nutritional food on over farmed land, especially if we use our land to produce biofuels.
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Why is global warming measured from the average temperature between 1951 and 1980, this is a direct quote from the NASA website:- "The period of 1951-1980 was chosen largely because the U.S. National Weather Service uses a three-decade period to define “normal” or average temperature. The GISS temperature analysis effort began around 1980, so the most recent 30 years was 1951-1980. It is also a period when many of today’s adults grew up, so it is a common reference that many people can remember." So now we know, it is fairly arbitrary, but we do need a reference and it was a fairly stable period, so it makes sence.