That depends on the amount of kw of mw you would like to accommodate.
How many solar panels per acre.
For a typical solar installation the general rule of thumb is that for every 1kw of solar panels needed the area required is approximately 100 square feet.
Extrapolating this a 1 mw solar pv power plant should require about 100000 sqft about 2 5 acres or 1 hectare.
When we use thin film technology a 1mw plant will require an average of 4 5 to 5 acres of land.
A simple rule of thumb is to take 100 sqft for every 1kw of solar panels.
By comparison imagine solar power.
On average 1 square meter of solar panels directly exposed to sunlight will receive about 1 kilowatt hour kw h of energy per hour for the six hours it is exposed to effective sunlight or 6 kilowatt hours of solar energy a day.
This can make it tricky to get a rough estimate of how much it will cost to build per acre of solar panels.
This means that for a 1mw solar pv power plant the area required is about 2 5 acres or 100 000 square feet.
In other terms we can say that for each 1 kw of solar panels you need 100 sqft of an area on average.
A good rule of thumb is that on average a one acre field of solar panels will cost from 400 000 to 500 000 before government incentives.