Grid-tied systems work best for sites with high day loads like businesses. You can offset all of these costs if your roof is big enough. No batteries needed. The main component in this system are the solar modules and a grid-tied inverter.
Here we used two units to maximise solar yield during the day. Some trackers perform better in the morning and other better in the afternoon because of the way the roof is built. A typical grid-tied system investment will break even in year 4. Thereafter you are saving a lot of money.
For business owners with high daily usage a grid-tied system will save you a lot of money over the next 5 – 10 years as electricity prices increase.