When it comes to climate change, there really is only one measure that matters, the total quantity of Greenhouse Gasses (GHGS) in the atmosphere. That is why policy-makers tend to favour absolute measures of emissions. The UK Climate Change Bill targets set out a legal obligation to reduce absolute emissions of “carbon units” by 80% by 2050 compared to 1990 levels. This equates to around 3% per annum reduction every year for the next 40 years (more…)
Most members of IEMA will undoubtedly have heard of Marginal Abatement Cost Curves, which are regularly used in climate change circles to help visualise complex data about carbon costs and emissions volumes. Below is an example of such a “curve” which illustrates the potential for different technologies to reduce greenhouse gas emissions in the USA.
If we look at the chart we can see that the technologies are ranked in ascending order of cost per tonne CO2equivalent (tCO2e)– that is to say that those projects that have the lowest cost (per tCO2e reduced) are on the left and those with the highest cost are on the right. Technologies below the line actually make a saving (a negative cost) over their lifetime – perhaps because they reduce energy consumption as well as carbon. (more…)
The Carbon Reduction Commitment (CRC) recently was renamed as “The CRC Energy Efficiency Scheme”. This article will look at why energy efficiency should be central to any organisation’s response to the CRC legislation.
It is not always appreciated that, in the short term, the financial implications of the CRC are relatively small. The table below illustrates that for an organisation consuming £1m of gas and electricity in equal measure, the cost of the emissions allowances under the CRC is around £87,000. (more…)