Why wouldn't it be? They already took the subsidy and got the green washing. They can switch back to the grid and move it to the expense line on the P&L. And sell the hardware to recoup the difference in cost the subsidy didn't cover.

You can't just wait for government funds to come to you. You have to take it before your competition does. And if you exhaust the funds before they or anyone else can take advantage, you look better to the market. Stock price go up.