Low power small grid-tie inverter

I have wanted, for some time, to try a grid-tie inverter to enable the output of my two Unisolar 64 solar panels to feed into the electricity grid. I purchased a Mastervolt Soladin 120 which seems to work very well. It is intended for the European market so does not have a 13 amp square pin plug for UK use. This is easily overcome however, and I have been very impressed with the performance and simplicity. Most grid-tie inverters are quite large and therefore expensive, but this unit at around £100 is ideal for experimental low power use. The maximum output it can feed into the grid is below 100 watts, so it is never going to give you a payback from the electricity generated, but several units can be operated in parallel for higher power.

When solar panels come down in price I may well invest in a larger system that can generate several kilowatts, but for now this will have to do.