UPDATE: I created a case for my NanodeRF. See a blog post here.
I have now got my OpenEnergyMonitor project working. Below is a graph of the real time power consumption at my house.
This is an experimental page and is prone to some teething problems. The default view is of the last six minutes of data. If the graph does not appear then please refresh the page.
If you have any questions please get in touch.
The bar graph has been removed, it would simply never appear. I suspect this is because my local server is overloaded.
My power consumption monitors in place. From the left a CurrentCost, Efergy and finally a OpenEnergyMonitor (emonTx). The CurrentCost monitor produces this data on these pages. A description of that project is here. The Efergy is a simple portable monitor I can carry around the house. The OpenEnergyMonitor monitor produces the graphs above.