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This project is liable to take a long time to complete with the initial stages likely to increase electricity consumption. Click on the links below for more information.

Stage 1: A Simple Inverter/Battery set up

This worked but it did give a few surprises and costs a little bit more to run than not using it. The main issues which need addressing are the reverse leakage of the battery charger and the low continuous load on the system which limited the average efficiency to 38%.

Stage 2: A more refined and optimised set up

The prototype of an automatic switch and switch off system is now operation and the efficiency looks around 75% with further scope for improvement. Details will be published once it is complete.

Stage 3: Not sure yet - depends on viability including payback time!