One ConsumerAffairs reviewer, Brad in California, was quoted almost $26,000 for a 5-kW system, which works out to $5.20 per watt ... clean your solar panels, it will cost around $100 to $350 ...

But the researchers say a balance could be achieved through future innovations in crystalline solar cell technology, which have the potential to equalise prices by enhancing ... an MSP of $1.19 per ...

Again, the type of solar panels you choose plays a role in the material costs of your solar system, with prices varying from $0.90 to $1.50 per watt. Monocrystalline solar panels tend to have a ...