Yes. Infuse will purchase, at the energy sales price, an amount of excess generation capped at your usage for that billing cycle. In other words, Infuse will not bank or provide additional credits for any excess generation greater than what you used from the grid for that billing period.
For example, if you use 1,000 kWh from the grid and export 1,200 kWh, credits will only be applied to offset up to 1,000 kWh of usage from the grid.
Note that you will pay TDU regulated delivery charges for the full amount you consumed from the grid. Those TDU charges are pass through charges from your local regulated utility.