Condensation on windows is a problem for many homeowners, and it can occur in all types of buildings. Singled-glazed windows are a primary cause of condensation, though many modern day double-glazed windows do condensate. This is usually due to poor manufacturing and inadequate installation.
To put this in context, construction of a 500 MW power plant for the different energy sources would cost around: 1  $1.8 billion for a solar power plant. 2  $1.5 billion for a typical coal plant. 3  $2.6 billion for a coal plant with CCS. 4  $482 million for a natural gas plant.
(See the Overcapacity Issues section.) The 2015 average solar cell price was $0.30 per watt and the average solar module price was $0.72 per watt. Since costs after installation are minimal for solar electricity, the relevant costs are the purchase price, installation costs, and the cost of land (capital costs).