Diesel generators are often used to produce electricity in remote areas with isolated grids. Electricity generated in this way is expensive.
In addition to the high cost of diesel fuel, there are other associated costs to be taken into account including transport, storage, losses and high emissions for example. On top of this, diesel generators are relatively inefficient and will generate about 2.5 to 3.5 kWh from one litre of diesel.
As a result, the price for electrical energy in isolated grids is high, sometimes reaching over one US Dollar per kWh.