Most independent power plants incorporate an internal combustion engine coupled to an alternator to make electricity.  This arrangement is called a generator. There are several ways that an independent power plant can use a generator to provide mains-style electricity to run our mains-powered appliances.  Each method has different ways of controlling the voltage, frequency, and waveform of the electricity that they make, and each method has advantages and disadvantages. The synchronous generator power plant uses the simplest form of generator.  This generator comprises an internal combustion engine coupled to an alternator.  You can find out more about the synchronous generator power plant, and its strengths and weaknesses here. The inverter generator power plant uses a more complex form of generator.  This generator comprises a generator that produces DC electricity, and an inverter that converts the DC electricity from the DC alternator to a mains-style electricity supply.  You can find out more about the inverter generator power plant, and its strengths and weaknesses, here. The DC generator power plant is the most sophisticated form of independent power plant.  It comprises an internal combustion engine coupled to a rectified alternator that produces DC electricity, a storage battery bank, and an inverter that converts the DC electricity from the storage battery bank to an AC electricity supply.  You can find out more about the DC generator power plant, and its strengths and weaknesses, here. Eniquest makes a range of DC-generator independent power plants, with our PowerMaker  generator at their core.  Eniquest also makes independent power plants based on synchronous generators.