It should be noted that for same plant capacity, Mono-crystalline high efficiency modules needs less than half the space of Amorphous Silicon. i.e. If a 1MWp capacity plant is built in 7 Acre land using thin film, with Mono-crystalline (standard efficiencies as mentioned previously) it will be within 3 Acre.
With advancement of technology, even higher efficiency modules (>20%) are available thus reducing the surface area requirement, no of modules etc to build a plant. It is feasible now to build a 1MWp capacity plant in 2.5 – 3 Acre of land in India using High efficiency PV Modules.
The table below gives a typical comparison on minimum land requirement vs module efficiencies: