You only receive credit for the excess energy your solar panels produce and put back on the grid. When you produce solar energy, your house will use the energy first and the excess will be put on the grid. Energy Texas only provides credit for that excess. Example: Your solar panels produce 1000 kWh and your household uses 800 kWh. The excess 200 kWh goes to the grid. Energy Texas will give you a credit for the 200 kWh.