How much does your solar roof cost?

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Darwin333

Lifer
Dec 11, 2006
19,946
2,329
126
It is

One of the things that I was surprised by the last time I had my roof replaced was the software they had at their disposal to know exactly how my roof was created in terms of square footage and every dormer, etc., on it. This wasn't something they needed to measure, but apparently had very detailed visual data I could only guessed came from some thing like a Bird's Eye view. They even know that the front of my home was two stories and three on the back (daylight/walkout basement).

I would think that Tesla was smart enough to have access to this kind of software/data to simple get a very accurate measure, orientation and type of roof design and place that into an automated workflow on their website. But maybe they are more focused on rockets and cars.

There are a couple of different services that the industry uses, one we used to use is called pictometry. They are, or at least were, very expensive and you had to purchase chunks of areas. I couldn't even imagine what the entire country would cost. Besides, even we use Google now because it's simply good enough.
 

Darwin333

Lifer
Dec 11, 2006
19,946
2,329
126
Oh I was wondering where people were getting their info. I get the same thing.

I've been looking into a more traditional solar setup and using this site to get an idea of pricing: https://www.solarwholesaler.ca/

I measured and I have room for about 3kw on my roof due to shape/shading etc so I figure about 15-20k for a half decent system. The biggest cost is the batteries and power electronics. (inverter/charge controller). I would want at least 2 inverters for redundancy and two big battery strings. I could go cheaper if I downsize on that stuff.

Wow, I've never heard of installing two inverters simply for redundancy, not even sure how to wire that up although I'm sure I could come up with something if I thought about it. Just out of curiosity, why do you want a battery bank system? Does the power grid go down a lot or do you have a real need to go off the grid?
 
Reactions: Jeeebus

steppinthrax

Diamond Member
Jul 17, 2006
3,990
6
81
Virtually every solar panel you can purchase has power performance guarantees, the industry standard is 80% of rated power at 25 years. Some panel manufacturers offer 30 or 35 year power production warranties with the norm being 75% at 35 years.

Point being is there is literally nothing to break inside the panel beside actual physical damage from an external force. They will continue working long after that warranty expires just at a slightly reduced efficiency over the decades. As a matter of fact, the first solar cell ever made still works to this day.

This only supports my point of the needless "infinity warranty". I know there is very little that can go wrong with these panels. Hell, with the decreasing cost of solar panels, in 30 years time the more modern panels would be so much more efficient and cheaper that it wouldn't matter.
 

steppinthrax

Diamond Member
Jul 17, 2006
3,990
6
81
While you are correct on all of your points in your previous post, one thing that you are missing is that along with the solar you are getting a "tile" roof too. So if your neighbor needed a new roof and decided he wanted tile just a normal tile roof would cost him roughly $40ishK +/- so you have to deduct that from the price of the Tesla roof. Sure you did it cheaper but they got a lifetime roof (well at least tile is and Tesla claims theirs is) AND solar and all you got was solar panels. Not really an apples to apples comparison.

I have designed solar systems for houses that were in desperate need of a reroof which had to be done before the solar install. Since they needed a new roof anyway that cost wasn't included in any ROI projections that I did. Would you argue that I ran the numbers wrong?

This would be something to look at if you are building a new home or about to reroof and considering a high end reroof.

Correct, I've mentioned this previously, but that would greatly depend on the roof area needing to be re-shingled and cost he/she can get it. I imagine if you (the contractor) are ambitious enough to give this person solar, you will try to get them a good price on re-roof as well as new panels. I have a 4br 4bath with garage roof. I believe I've priced a new roof to around 10 to 15K. So even if I did panels myself and hire someone to do a roof, it's still cheaper.
 

Darwin333

Lifer
Dec 11, 2006
19,946
2,329
126
This only supports my point of the needless "infinity warranty". I know there is very little that can go wrong with these panels. Hell, with the decreasing cost of solar panels, in 30 years time the more modern panels would be so much more efficient and cheaper that it wouldn't matter.

Same thing with computers but that doesn't stop you from owning one today... I'm 90% sure that the "infinity" warranty is more for the roof and the solar panels have a graduated power production warranty.
 

Darwin333

Lifer
Dec 11, 2006
19,946
2,329
126
Correct, I've mentioned this previously, but that would greatly depend on the roof area needing to be re-shingled and cost he/she can get it. I imagine if you (the contractor) are ambitious enough to give this person solar, you will try to get them a good price on re-roof as well as new panels. I have a 4br 4bath with garage roof. I believe I've priced a new roof to around 10 to 15K. So even if I did panels myself and hire someone to do a roof, it's still cheaper.

Still not comparing apples to apples though, price out a TILE roof or even a slate roof and then get back to me. You will probably still save over going with Tesla but the price won't vary nearly as much. You simply can't compare a standard shingle roof to a roof that will, and is guaranteed to, last your (or your buildings) lifetime. Not to mention that when it does need to be reroofed generally 80%+ of the existing tile can be reused. I was involved in running the reroofing project of one of the oldest tile roofs in the entire country. It was originally installed in the 1800s and used handcrafted (forged? beaten? blacksmithed?) spikes to nail down the tile and it was the original roof we removed. That's one hell of a run and completely incomparable to a shingle roof.
 

Staples

Diamond Member
Oct 28, 2001
4,952
119
106
The ROI isn't very compelling nor is the upfront cost. I'd rather go through Solar City or the other dozen like it.
 

Red Squirrel

No Lifer
May 24, 2003
67,904
12,374
126
www.anyf.ca
Wow, I've never heard of installing two inverters simply for redundancy, not even sure how to wire that up although I'm sure I could come up with something if I thought about it. Just out of curiosity, why do you want a battery bank system? Does the power grid go down a lot or do you have a real need to go off the grid?

It's more for piece of mind, if you have so many single points of failure in your system you don't want to be dead in the water when something fails. The cheaper way to go would be to do partial solar with a hydro backup. So I could put stuff like the server room and lighting on the solar system, and just split stuff across different inverters, or get two inverters that support paralleling. If batteries get low then some AC-DC converters just kick on. Essentially a mix between UPS and solar.

I'd want to go with a battery system since there's no sense in me selling power to the grid for peanuts only to buy it back at a higher price. I may as well store everything I generate. I don't even know if they have that program here where you can sell back. I heard they stopped it. It also makes you a bit more independent. With grid tie, your solar panels are useless if the power goes out. We don't really get much power outages here but with global warming/climate change we do get more storms and they'll only get worse, so it's something to be more prepared for. The issue is winter though, our days are so short, it would be hard to go fully off grid, but if I could do that, that's where I would save a LOT of money. Just being connected to the grid costs like $100/mo.

Realistically though if I wanted to go off grid I'd be better off buying a property that is more friendly towards that. It's kinda limited in a residential area, only so much room to build. With a bigger property I would just do a very large ground mount system and wind turbines.
 

slag

Lifer
Dec 14, 2000
10,473
81
101
Total nonsense calculator. It makes too many assumptions that could be way off. Such as assuming everyone in a state has the same electricity rate. I pay about 40% less per kWh than the average in California thanks to having municipal power. Where I live solar roofs would never make sense due to low cost power we have

I think that's why you estimate your monthly bill. It's a field you can change.
 

Darwin333

Lifer
Dec 11, 2006
19,946
2,329
126
The issue is winter though, our days are so short, it would be hard to go fully off grid, but if I could do that, that's where I would save a LOT of money. Just being connected to the grid costs like $100/mo.

Wow! Do you mind telling me where you live? I've never heard of anything like that.
 

Red Squirrel

No Lifer
May 24, 2003
67,904
12,374
126
www.anyf.ca
Wow! Do you mind telling me where you live? I've never heard of anything like that.

Northern Ontario. They privatized our hydro company (Hydro One) and our rates have been out of control since then and go up every year. Actually multiple times a year. I pay over $170/mo and most of that is not usage, but fixed fees. They know people conserve more now so they get us with fixed fees and constant increases in rates.

At one point they were even talking about banning natural gas to force people to heat with electricity so they can make more money. Thankfully they seem to have canceled that.
 

IronWing

No Lifer
Jul 20, 2001
69,524
27,825
136
Using Telsa's calculator and my electric bills for the past ten years, I would lose $6,500 plus the time value of the $41,300 capital investment over thirty years. My utility doesn't offer cash for electricity from solar, only account credits which I could never use.
 

SNC

Platinum Member
Jan 14, 2001
2,166
202
106
80 K and it would generate about 25% of my needs. So its a no go right now.
 

Darwin333

Lifer
Dec 11, 2006
19,946
2,329
126
This only supports my point of the needless "infinity warranty". I know there is very little that can go wrong with these panels. Hell, with the decreasing cost of solar panels, in 30 years time the more modern panels would be so much more efficient and cheaper that it wouldn't matter.

Since I've spent much more time being a roofing project manager than a solar electric professional I would say that the "infinity" warranty is far more important on the roofing part while the solar part keeps on chugging even if it is at a slightly lower efficiency.
 
Nov 20, 2009
10,051
2,577
136
This is probably more accurate in terms of how much sq. footage is available for a solar roof:

https://www.google.com/get/sunroof#p=0
Mis-identifies my home. The home it identifies, just around the corner, is of a different size, design/shape and orientation, and just a visual comparison would seem to indicate to me that my roof has more exposure to the sun. I was astounded by the Google inaccuracy considering it's regular MAP program is spot on. The house that link picked out was of a different name and number.
 

dud

Diamond Member
Feb 18, 2001
7,635
73
91
One issue that has not been discussed (perhaps I missed it) is the mobile nature of our society. When I was young the term "nuclear" family became widely used and referred to the habit that contemporary people/families had of moving anywhere they wished ... pretty much whenever they wished. While some homeowners stay in their homes for long (20+ years) periods of time ... a large number do not ... and this is (IMHO) a problem when considering going with this technology ... at this price. If a homeowner is going to spend $60K on a new solar roof, only to move across country for a new job in 5 years time ... can he/she realistically expect to recoup the cost of the solar roof at time of sale? IMHO the answer is no. If considering a house I will not pay a (significant) premium for a house with a solar roof over one without.

Your thoughts?
 

Darwin333

Lifer
Dec 11, 2006
19,946
2,329
126
Northern Ontario. They privatized our hydro company (Hydro One) and our rates have been out of control since then and go up every year. Actually multiple times a year. I pay over $170/mo and most of that is not usage, but fixed fees. They know people conserve more now so they get us with fixed fees and constant increases in rates.

At one point they were even talking about banning natural gas to force people to heat with electricity so they can make more money. Thankfully they seem to have canceled that.

Damn, that is some bullshit, I've never heard of anything like that. We would freaking riot down here if they added a $100 fee just to be connected.
 

TXHokie

Platinum Member
Nov 16, 1999
2,557
173
106
One issue that has not been discussed (perhaps I missed it) is the mobile nature of our society. When I was young the term "nuclear" family became widely used and referred to the habit that contemporary people/families had of moving anywhere they wished ... pretty much whenever they wished. While some homeowners stay in their homes for long (20+ years) periods of time ... a large number do not ... and this is (IMHO) a problem when considering going with this technology ... at this price. If a homeowner is going to spend $60K on a new solar roof, only to move across country for a new job in 5 years time ... can he/she realistically expect to recoup the cost of the solar roof at time of sale? IMHO the answer is no. If considering a house I will not pay a (significant) premium for a house with a solar roof over one without.

Your thoughts?

This was one of the key factors when we decided on installing our solar power system - Would we stay in this house long enough to see the true benefits? My previous two houses I stayed in for 6 and 10 yrs. I wouldn't have considered solar on those houses before since after my 3rd or 4th yr, I'd be thinking I want to move to another house in the future and ended up moving to another state.

This house we're in now has been 4 yrs and it's a keeper. We've been upgrading it with the intent of retiring here and will take our kids probably 10 more yrs to finish school/college. It's small enough that we won't need to downsize once kids are gone. We'll be here for the long haul of 10+ more yrs for sure.

The finance numbers for solar long term was a no brainer since it literally doesn't cost me any extra since the monthly cost of paying for electricity now goes to the solar loan. If I play my cards right, it'll be paid off just when I retire and won't have to deal with electric bill after that. It should generate most if not all the power needed for the house even at 10% reduction in efficiency. I can easily get more efficient A/C, hot water heater, and no kids wasting energy to replace that loss. After 10 yrs and let's say even if I still owe $15k on the loan, it should be an easy selling point to roll that into the price if I was to say buy this house and your electric bill will be only $10/month. Recoup in 5 yrs or less? Nope.
 

Red Squirrel

No Lifer
May 24, 2003
67,904
12,374
126
www.anyf.ca
Damn, that is some bullshit, I've never heard of anything like that. We would freaking riot down here if they added a $100 fee just to be connected.

Oh people are pissed, but nothing we can do. They're a private company now, so it's just capitalism at play. They are doing everything a corporation will do to maximize profits. I'm sure they'll start laying off linemen soon and it will take longer for power outages to be repaired etc. Typical corporate cycle.
 

Darwin333

Lifer
Dec 11, 2006
19,946
2,329
126
Oh people are pissed, but nothing we can do. They're a private company now, so it's just capitalism at play. They are doing everything a corporation will do to maximize profits. I'm sure they'll start laying off linemen soon and it will take longer for power outages to be repaired etc. Typical corporate cycle.

Our power company is private too but they have to get permission from local regulators for every single rate hike or fee. Like I said, we'd freaking riot and that shit would be legislated out of existence with the quickness.
 

Charmonium

Diamond Member
May 15, 2015
9,582
2,946
136
Our power company is private too but they have to get permission from local regulators for every single rate hike or fee. Like I said, we'd freaking riot and that shit would be legislated out of existence with the quickness.
Same here. Our Board of Public Utilities would never allow something like that unless they were completely in the pocket of the utilities.
 
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