Sweet Answer from Solar Mango: (updated Jul 2015)
The solar PV value chain looks thus (for crystalline solar panels):
Polysilicon ==> Ingots & wafers ==> Solar Cells ==> Solar Panel ==> Solar Power Plants/Off-grid Solar Products.
Stages requiring high capital expenses
- Within the solar PV value chain, Polysilicon manufacturing and ingot/wafer manufacturing facilities require high capital costs, in the order of $1 billion or more.
- Cell manufacturing typically comes in at about $50-100 million (for a 50-100 MW capacity range).
- At the downstream end, solar PV power plants, if they are in the MW scale, involve high upfront expenses. As of 2015, a 1 MW solar PV power plant could cost in the range $1-1.5 million depending on the region.
Stages that do not require high capital expenses
- Module assembly capital costs can be in a few million $ (you can have a reasonable sized module assembly plant at less than $5 million)
- Plants assembling off-grid solar products (solar lanterns etc.) cost much less and could be done even by small entrepreneurs or investors.
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- What is the difference between manufacturing solar cells and manufacturing solar panels?
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