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.
Sea Level 5092
Some Key Points
- Sea level is increasing by about 4mm a year.
- Sea level changes all the time but is it is currently rising rapidly
- Sea level rise is caused by two main factors related to global warming: the added water from melting ice sheets and glaciers and the expansion of seawater as it warms.
- Sea Level change is "lumpy", the mass of the ocean is increasing but the sea level change varies greatly across the ocean.
References
https://climate.nasa.gov/vital-signs/sea-level/http://www.cmar.csiro.au/
http://www.cmar.csiro.au/ https://research.csiro.au/slrwavescoast/sea-level/measurements-and-data/sea-level-data/
Notes
Figure 7.1 is derived from coastal tide gauge data and shows how much sea level changed from about 1870 to 2000. Sea levels reflects the climate system. During ice ages a large volume of water is stored on land in the form of ice sheets and glaciers, leading to lower sea levels, while during warm interglacial periods, glaciers and icesheets are reduced and more water is stored in the oceans. Sea levels typically vary by over 100 metres during glacial-interglacial cycles as the major ice sheets wax and wane as a result of changes in summer solar radiation in high northern hemisphere latitudes. The sea level has increased by more than 120 metres since the end of the last ice age but it has stabilised over the last few thousand years, and there was little change between about 1AD and 1800AD. Sea level began to rise again in the 19th century and accelerated again in the early 20th century, in the 21st century the rate has increased to about 4mm each year on average.
Figure 7.1 - Historical Sea Level Change - Coastal tide gauge records
Electricity Cost Calculator
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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.