This is mainly due to the Net Energy Metering (NEM), which allows homeowners (now consumers of energy) to sell their excess energy into the grid.
Anyị na-eme grid (ọ bụghị otu nwere ike) nke a ga-etinye ngwaahịa ahụ maka ịṅụ sịga (nhọrọ bụ iji tinye nkedo ígwè na nko na akụkụ elu nke gbọmgbọm).