As my daughter pointed out, attention to the details of Harry Potter's world is also patchy. (1) As everybody knows, the Gryffindor Quidditch team includes several girls. As far as we could tell, all the players in this game are represented as boys. That is a huge demerit for this father of a daughter.
Pricing for Solar Photovoltaic (PV) Systems. Generally, Solar PV systems that generate electricity from sunlight cost between $1.95 to $6 per installed watt. Typically, the larger the system, the lower price per watt. Large commercial systems are typically well below $3 per watt. Residential systems, because of their smaller size are usually somewhat higher.
The final costs of a solar system is highly dependent on where you live and what rebates, tax credits and grants you are eligible for. In some situations, total costs can be cut well above 50%, and homeowners are able to go solar for only few thousand dollars. Everyone receives at least a 30% federal tax credit.ear-over-year, the national average PV installed system price declined by 9% to $2.73/watt in Q2 2014. The average price of a residential PV installation in Q2 2014 was $3.92/watt, 41% lower than 2010. Since the second quarter of 2010, the average price of a solar panel has declined by 64%.