We assumed a fixed tarif of 4p/kWh and 14p/kWh for Natural Gas and National Grid electricity respectively. The results of our calculations show the cost savings per year, seen in the graph below.
We got a handle on potential capital costs of putting in the different systems by calibrating the expert advice we received from our industry partners with our own research into previous case studies. The big difference between the costs of inputting the CHP for central heating and for hot water are the:
For our vision for a sustainable Glasgow we wanted to think big. So we thought - what would be the impact if we could put this system in every highrise block in Glasgow? We have approximated around 15,000 households in highrise in Glasgow. The table below shows a comparison between the different scenarios. The best carbon investment is found when just putting in CHP for hot water, with a small carbon investment of £750/tonne carbon. For the full calculations, please see the spreadsheet in our downloads tab.
© University of Strathclyde 2009
