How to get to net zero?
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Self assessment tools
There are a bewildering number of online self-assessment tools available!
The National Association of Local Councils produced a report in 2020 that reviewed 13 different tools that are available in the UK:
They vary in their ease of use, the ‘depth’ or granularity of detail you can provide and the ability and type of actions you can model to see how you can improve.
So, which tool should you use?
The Climate Action Working Group tried several tools including:
We found that they vary in how easy they are to use, the depth of analysis, the opportunity to make plans and also in the actual numbers they produced. We can’t recommend one as it does depend on what level of detail you want to go into, how easy the tools need to be and many other factors.
BUT, we can recommend that you use a self-assessment tool and:
- Try to enter as much detail as you can eg your annual energy consumption
- Reflect on some realistic goals for the coming year
- Review again at the start of next year
How to calculate home energy CO2 emissions (updated June 2023)
Use the table below to convert your energy usage in kWh into an estimate of you CO2e kg.
Energy source |
Multiply by this number to derive CO2e kg Source: UK government June 2023 |
Electricity |
0.205 per kWH |
Natural Gas |
0.202 per kWh (includes transmission loss) |
Bottled gas |
3.68 kg CO2 per kg of bottled gas (2) |
Oil |
3.17 per litre of oil |
Coal |
2.9 per kg of coal |
Wood |
0.10 per kg of wood |
Notes:
- Source UK government Conversion Factors
- The UK electricity factor is prone to fluctuate from year to year as the fuel mix consumed in UK power stations (and auto-generators) and the proportion of net imported electricity changes.
- 2022 was 0.197
- We recommend you use the government factors to calculate your CO2 emissions as these are based on the actual mix of renewables and non renewables in power generation
- Many power suppliers state that the energy they supply is fully renewable. We would refer you to the detailed article by the Consumers Association on the ‘Differences between green energy suppliers‘
- The UK electricity factor is prone to fluctuate from year to year as the fuel mix consumed in UK power stations (and auto-generators) and the proportion of net imported electricity changes.
- See Carbonindependent