I would (and did) start with the picaxe range of microprocessors. These are programmed in Basic and hence very easy to get started. They can interface through Serial or USB and there are a range of hobbyist boards available.
Best of all the forums are absolutely brilliant and easily used by...
Guys,
I have a Lister generator that is capable of producing approx 5KW of power from an attached ST alternator.
I am in australia so our standard power is 240v at 50hz
I have a grid tie inverter for my solar panels - this unit accepts between 150v dc into 500vdc It has a single input...