
Introduction to SolarPowerfortheWorld 21
• System price: $5/W
• 4 kW system: $20,000
• Utility “Austin Energy’s” support: $2.5/W = $10,000
• 30% federal tax credit: $3000
• $50 to $60 monthly utility savings
Payback time of 8 years
The US states have the RPS as overall guide for support. It can
be implemented in different ways, as rebate programme of public
utilities or state agencies, or cash incentives. Apart from these
incentives for the up-front cost of a PV system, states may promote
PV as part of the RPS Solar Renewable Energy Certificates (SRECS).
Those certificates are issued like for the FITs per kWh produced
by certified and registered PV systems. ...