Net metering is a billing arrangement that allows solar system owners to connect their photovoltaic (PV) systems to the electric grid. Under this arrangement, any excess electricity generated by the solar system is fed back into the grid, and the owner receives credits for the surplus energy. These credits can then be used to offset the energy consumed by the grid when the solar system is not producing sufficient electricity, such as during nighttime or cloudy days.

I don't think Nigeria has the facility for this set up yet. Maybe some places do but not everywhere as most transformers and electricity poles have no facility to handle this reading.

servotechpower:
Net metering is a billing arrangement that allows solar system owners to connect their photovoltaic (PV) systems to the electric grid. Under this arrangement, any excess electricity generated by the solar system is fed back into the grid, and the owner receives credits for the surplus energy. These credits can then be used to offset the energy consumed by the grid when the solar system is not producing sufficient electricity, such as during nighttime or cloudy days.