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.
Global Warming 4786
Some Key Points
- This is the key climate metric, it is measured relative to the average global land/ocean temperature between 1951 and 1980.
- It is the average Global Land/Ocean Temperature Deviation.
- It is close now to 1oC above that average.
- The UN warns that to avoid real issues for our habitat we should not go above 1.5oC and that above 2oC humanity will move into uncharted and dangerous territory.
- Climate change is normally quite natural, but the rate of change today is caused by man made greenhouse gas emissions, mainly carbon dioxide (CO2) from burning fossil fuels.
- In the past 10 years global CO2 emissions increased by 16%, with ever increasing fossil fuel use.
- The high/low projections to 2040 simply follows this trend in CO2 emissions, it is the nothing changes scenario.
- We see no real sign that the world will react rapidly enough to stop this, there just isn't the political will, by 2040 we will be at least 2oC warmer than the pre 1980 period.
References
https://climate.nasa.gov/vital-signs/global-temperature/https://data.giss.nasa.gov/gistemp/
http://www.ipcc.ch/report/sr15/
Notes
There are many sources of global temperature deviation data and they all tell the same story, the planet is warming up. The cause of the warming is the increase in the concentration of greenhouse gasses in the atmosphere, which prevent heat from radiating away from the planet into space.
Figure 6.1 shows the increase in temperature from 1880 to 2017 the temperature has increased by about 1.25oC. However global warming is defined* as the increase in temperature fron the global average between 1951 and 1980 and it now stands at +0.9oC.
Figure 6.2 shows the average worldwide land/ocean temperature together with the data from the northern and southern hemispheres. Warming is clearly greater in the north where most of the planet lives, where there is most industry and where the greenhouse gas emissions are the greatest.
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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.