A 8kW system will conservatively produce over 30kwH a day on average (yesterday we got 53kwH, for example), so you are saving about $10 a day or $300/month, $3600 per year.
Tesla (https://www.tesla.com/energy/design) no longer installs pure solar without batteries, so let's consider the cost with 1 Powerwall battery, it is $26k without federal tax credit and $19000 with it.
Hence the system pays for itself in just over 7.2 years without incentives and in 5.2 years with incentives. And that includes a Powerwall. Last year you could order a pure solar system where ROI was even better, well under 5 years, maybe under 4 even.
However with a pure solar system you are at the mercy of SGDE and net metering since you have to take energy from them at night.
no subject
Look, it is not rocket science, here is a computation.
The rate you are paying here is approximately $.30/kwH (it depends on your plan, but you are unlikely pay much less on average:
https://www.sdge.com/residential/pricing-plans/about-our-pricing-plans/whenmatters).
A 8kW system will conservatively produce over 30kwH a day on average (yesterday we got 53kwH, for example), so you are saving about $10 a day or $300/month, $3600 per year.
Tesla (https://www.tesla.com/energy/design) no longer installs pure solar without batteries, so let's consider the cost with 1 Powerwall battery, it is $26k without federal tax credit and $19000 with it.
Hence the system pays for itself in just over 7.2 years without incentives and in 5.2 years with incentives. And that includes a Powerwall. Last year you could order a pure solar system where ROI was even better, well under 5 years, maybe under 4 even.
However with a pure solar system you are at the mercy of SGDE and net metering since you have to take energy from them at night.