How many solar panels are needed to produce 1 MW of electricity?
1MW is equal to 1000kw and is calculated by dividing 1MW by the wattage of your solar panels. If you use 500 watts solar panels, theoretically, you will need 2,000 solar panels. But in reality, there are other factors that will affect the efficiency of solar panels.

Other factors affecting the number of 1MW solar panels
Size of solar panels: Larger solar panels contain more cells, which can absorb more sunlight and increase the amount of power generated. Common sizes for home solar panels are 1.6 to 1.8 meters long and about 1 meter wide. This may vary for high efficiency solar panels. Commercial solar panels: Larger sizes and may be 2 meters or more in length.
Efficiency of solar panels: High efficiency solar panels will have high power generation efficiency even on cloudy days, like monocrystalline silicon solar panels are made of high purity silicon material, which has a good absorption rate of sunlight, and the power generation efficiency will be increased. It is suitable for areas with short sunshine hours and high power demand. However, polycrystalline solar panels will be less efficient than monocrystalline solar panels. If you want to reduce the use of solar panels, it is recommended that you choose monocrystalline solar panels.
The amount of sunlight the solar panels receive: In shaded areas, the solar panels will receive less sunlight, so the solar power generation will be less, which may lead to the need for more solar panels. In sunny places, the solar panels get more sunlight plus more, when fewer solar panels are needed.
What can I run on 1MW of electricity?
If your solar panels can produce 1MW of electricity, you can run almost all the appliances in your home, as well as 1000’s of houses around you. This is suitable for PV farms or factories that use a lot of electricity, etc. The average home will not use 1MW of electricity directly.
To summarize
The need for the number of solar panels to generate 1MW of electricity is related to the size of the actual solar panels, their efficiency, and the amount of local sunlight, and will often be more than the theoretical number.