NorCal, Tesla 4kw + 1 powerwall

[Wannaretireearly]

Thanks Scrambler. This really helps more than you'd think. I didn't know where go start.
Now I have a few things to think about.
I'll check out pvwatts when I get a sec & try to talk to the designer about your idea with reddish locations.

We don't have any tree shading issues. Roof line shading we get does impact that south facing roof a bit...

[scrambler]

I am not sure what feed back you are looking for here.
This just shows you have 6 panels facing south
Then 3 panels facing East north east
Then 3 panels facing West south west

We have no info on shading on that roof, so it is hard to tell if these are the best choices.
Did you survey shadows are various time of the day to see if you get any from trees or roof obstacles...

Using PVWatt, you could evaluate the production of each array to see the differences or kWh production per watt of panel in each orientation

Below in reddish are areas where it seems there would be better place for the 3 panels that are on the North east roof. But without more details and PVWatts simulations, it is hard to know if they are a real option.
image_13832.jpg

[Wannaretireearly]

Bump!

[Wannaretireearly]

So I got my design from Tesla. Let me know your thoughts. Thanks

[Ampster]

Yes, I found out the vastly over charge in the bay area, many even higher than the SGIP rebate or even when none is available.
By the way, so far there is no more SGIP funds available over here except for people in fire designated areas with low income brackets.

A recent poster here said there were no income limits for fire designated areas. Or it could have been for some fire desginated areas. I am two miles away from one of the areas in Sonoma.

[Wannaretireearly]

Normally, after they review all the data you send them, they create a firm proposal for you and that is it.
I cant speak for solar, but I would expect to see.
$8.2k (4kw) + $6.5k (1 powerwall) + $1,100 (gateway) + $xxx (install) + tax

The variable is the install that they normally finalize once they have gotten pictures of your panels, seen you POCO info and seen the installation site picture. This allows them to determine the amount of labor for the critical loads panels and wiring for the Powerwall and Gateway.

Just got quote and they charging me $10k for the 4kw system. Trying to get them to adjust to the prices lowered this week

[scrambler]

Yes, I found out the vastly over charge in the bay area, many even higher than the SGIP rebate or even when none is available.
By the way, so far there is no more SGIP funds available over here except for people in fire designated areas with low income brackets.

[Ampster]

Are the installers other than Tesla quoting Powerwalls? .........

Yes they are. Since they still have allocations for SGIP (Self Generation Incentive Program) rebates their prices are generally higher than Tesla's price by the amount of the rebate. I had a deposit a couple of years ago with one but went DIY.

[PVAndy]

Thanks. Appreciate any pointers as it looks like I'll only get one chance to ask questions and influence the design/install.

What are your thoughts on going with a 4kw Tesla system (12 panels) with a powerwall, where other vendors are generally sizing me at 5.5kw and about 16 panels? The jump with Tesla from 4 to 8 kw seems huge/overkill. But I dunno...

Are the installers other than Tesla quoting Powerwalls? We only do utility scale solar in CA but where we do residential we'll size to meet customer usage

Andy

[scrambler]

Normally, after they review all the data you send them, they create a firm proposal for you and that is it.
I cant speak for solar, but I would expect to see.
$8.2k (4kw) + $6.5k (1 powerwall) + $1,100 (gateway) + $xxx (install) + tax

The variable is the install that they normally finalize once they have gotten pictures of your panels, seen you POCO info and seen the installation site picture. This allows them to determine the amount of labor for the critical loads panels and wiring for the Powerwall and Gateway.

[Wannaretireearly]

I'm worried about the fuzzy pricing on the tesla site.
am I really gonna see a bill for $8.2k (4kw) + $6.5k (1 powerwall) + tax. Or will I get nickel and dimed.
love to see folks who have gone thru the process last 3-4months

[scrambler]

In November 19, the quote was
Powerwall: $6,500
Gateway: $1,100
Installation:3,000 (depends on your home specifics)
Taxes:$630

[SunEagle]

So it boils down to a 5.5 kW LG system for $20,000 or a 8 kW Tesla system for $16,000.

I wonder what the cost of the Tesla battery add to the total system price?

[Ampster]

so $3.6/watt for LG or $2.01/watt for Tesla

His other option is a 4kW Tesla system which might generate 5,000 kWh per year if oriented south. His consumption is 7,000 kWhr per year. All we know is that the front of his house faces east.

[solar_future]

So it boils down to a 5.5 kW LG system for $20,000 or a 8 kW Tesla system for $16,000.

so $3.6/watt for LG or $2.01/watt for Tesla