What’s a solar mini-grid?
A mini-grid is a small scale electricity network fed by solar energy. The generated electricity is supplied – directly or indirectly via batteries – to clients who are connected to this mini-grid electricity network. A group of people who live close to each other, in for instance a village, can be easily connected to the grid.
The advantage of a solar mini-grid is that it can meet higher energy demands by for instance Kenyan businesses. A solar mini-grid boosts business activities in Kenya’s rural areas, but can only be realized economically if the distance between clients is relatively small.
How does a minigrid work
Solar panels capture sunlight, which is converted to electricity. The electricity then goes to an inverter that converts direct current into alternating current, which is then fed directly or indirectly (via the batteries) into the electricity network. The electricity reaches all customers connected to the network.
A diesel generator is used as a back up for the solar power plant. The generator will feed the network or batteries at times when the solar energy production is insufficient. To allow the batteries of the electricity network to be recharged, customers will not have access to the network for a period of time.