I have a 5kwh 16panels, 340wp.
Last year PEA took away my analogue meter and placed a digital one.
On yearly base, I produced around 18kwh a day.
Now I thinking of selling back to PEA, but I have to invest 15-25K to get this done.
From the 18, probably I use 4 or 5 on the day, that means, selling back around 13.
13 x 365 x 2.2 = 10.400 baht a year
So mony back in 2 years.
BUT.... like one person wrote, other costs of PEA may increase.
So what is wise: keep system like it is, put export meter on zero and use as much on the day from the solar.
Or selling back to PEA 🤔