1)on grid system working way: through city power use solar directly , sale power to utility ,without battery storage .（No need to consider the load of the house but must be work with stable city power）

2)off grid system working way :use solar to load directly and charge power to battery ,also system can charge city power to battery (need to consider the load of the house but it is independent system，Suitable for areas without mains electricity )

3)on/off grid system working way: storage power to battery ,Excess power is sold to the grid. (If you want to sell electricity, the city power needs to be stable）

Don't worry, Tanfon Solar is here to solve your problems promptly.

Nigeria Ibadan Confectionery Factory ---MW solar power plant

The green energy revolution injects new vitality into fish farms