system
Given the following post, respond as if you're commenting on Reddit:
human
Is it possible to buy land and solar panels, harvest solar energy, and sell it back to the grid at a profit? 

If you can get a 2 sq meter solar panel for 400 dollars that produces .3 kW, with about 7 hours of daylight you could make 20 cents per day at 10c/kWhour.

That's about 75 dollars per year per panel. So for an acre (4000 sq meters), if you filled a sizable fraction with panels (1280 panels taking up 2560 sq meters), you would harvest about $95000 dollars of electricity a year.

The start-up cost is about half a million dollars + installation (DIY?), so that's about the same as a decent suburban mortgage - naively you could live off the profit.

Show me where I'm wrong?
gpt
I work at electric utility company in Ontario, not to crush your dreams but:

1. You will never get 7 hours of day light. Good solar panels usually assume 15-20% duty cycle meaning expect them to produce 20% of your .3kW constantly throughout the year (less than 5 hours a day).
 
2. The more panels you have the lower the rate per kWh we give you in cash. 

3. You can DIY installation but you can never do connection by yourself. Solar panel outputs DC current which requires an inverter to feed back into the grid. Special meters should also be put into place to monitor your output. Lastly we check the distribution transformer’s capacity meaning you might not even get your huge project approved.

4. Hello maintenance costs?

It highly depends on where you are and the local policy in place. Nonetheless, if you do the math right, it is profitable in terms of present value. However the initial investment is fairly high and the payback period is looking at something around 10 years on average.