Tesla solar roof

[sloeffle]

I have to take issue with the generality of this remark.
This is *not* all tech. Transistors (by the billions in your gadgets) have an unprecedented reliability - far outperforming e.g. airplanes (which are also far, far, FAR beyond "80%").

I don't disagree with you.

But you are comparing resistors, cars, and railroads to writing code, and project implementation of said code and or product. Human lives are not on the line in my line of work. If they were, I too wouldn't be okay with 80% either.

80% is good enough is not a new theory. Please see the links below:

Blog: Making the Case for Good Enough in Modern Technology Selection

Can you still rely on the Good Enough principle to narrow the field in technology selection? Read former Gartner Analyst, Frank Kenney’s take.

www.cleo.com

The Good Enough Revolution: When Cheap and Simple Is Just Fine

Entire markets have been transformed by products that trade power or fidelity for low price, flexibility, and convenience.

www.wired.com

(broken link removed to https://www.growthink.com/content/80-good-enough)

 

[peakbagger]

BTW - Tesla is raising the costs of their roofs substantially even with people who have signed contracts

Tesla starts offering free Powerwalls to people with big price increases on solar roof

Tesla is starting to offer free Powerwalls to people who received big price increases on solar roof projects that were...

electrek.co

The con is Tesla does not give a Powerwall, they retain the rights to dispatch it and get the revenue from the dispatch.

 

[andym]

There is zero chance I would purchase one of these tesla roofs. Combining expensive, new electronic technology with roofing materials sounds like a fulfillment of the old saying: a fool and his money are soon parted. What are the chances that the tech will be serviceable or even useable in 10 years? Kind of like 3g phones, etc. For that matter, who's going to be qualified to find and repair a roof leak?

 

[mellow]

I had the new roof put on last week. Now my next challenge will be finding some way to put solar on that wont void the GAF warranty.

 

[stoveliker]

Have your solar company be in touch with your roofing company, so the former can explain to the latter how they want to do things, and the latter can instruct the former if need be.
This is a standard conundrum, and your roofing company will likely have dealt with it before.

 

[peakbagger]

Generally if the original roofer was a certified i

Have your solar company be in touch with your roofing company, so the former can explain to the latter how they want to do things, and the latter can instruct the former if need be.
This is a standard conundrum, and your roofing company will likely have dealt with it before.

I am curious, since GAF apparently sells or did sell a integrated solar roof they may not be interested in the competition. Generally on commercial roofs any modifications have to be done by certified installer.

 

[stoveliker]

Or the roofing company says they won't give warranty on penetrations made by the solar company, essentially kicking the can (fight) down the road...

 

[rwh63]

i like the idea of an attractive solar shingle roof. the price you quote appears to be very expensive though. i'm also concerned that the product will not be supported in the years to come, or will be replaced with another type and makes yours obsolete (like all tech). would you buy a house with a 15 year old seriously outdated hi-tech roof? i say go asphalt, or metal (or slate!), and add solar separate.

or do what they do in silent green, and hook your bicycle up to the electrical system. if you want light, you need to work for it!

 

[mellow]

The main reason I wanted a tesla roof was to get the Powerwalls, well now I have found a way to get the battery backup without going to Tesla.

Article: https://rollsbattery.com/wp-content/uploads/2020/08/S48-6650LFP-ESS-vs-Powerwall.pdf

Battery: https://www.rollsbattery.com/wp-content/uploads/2019/07/S48-6650LFP.pdf
Hybrid Inverter: https://solar.schneider-electric.com/product/xw-pro-na-solar-hybrid-inverter/

All kinds of toys: https://solar.schneider-electric.com/solution/residential-off-grid-solar/

 

[peakbagger]

My guess is they are going to hook you on the solar roof and then convince you to go with conventional panels as they are far quicker and more profitable for Tesla.

 

[EbS-P]

Our utility company won’t sign a net metering rider for more annual production than you used last year. In the US vehicle to grid is only offer by Ford and require an 80 amp charging circuit be installed.

That have all but given up the solar shingles here.

 

[mellow]

I am back to this because the clock is ticking, I might be too late to catch the incentives before they end but I am going to look into this again, just not with tesla in mind.

I had one of my biggest power bills last month, 1,500 kWh, I know for some of you that is chump change but for me it was high.

I have been talking to my solar consultant (chatgpt) and it seems to think I can still make it with all the permits if I start soon.

I was thinking about going with a battery ready system so I can add that next year.

From your experiences and knowledge is it still possible to get a system installed or is everyone backed up till next year?

 

[EbS-P]

I am back to this because the clock is ticking, I might be too late to catch the incentives before they end but I am going to look into this again, just not with tesla in mind.

I had one of my biggest power bills last month, 1,500 kWh, I know for some of you that is chump change but for me it was high.

I have been talking to my solar consultant (chatgpt) and it seems to think I can still make it with all the permits if I start soon.

I was thinking about going with a battery ready system so I can add that next year.

From your experiences and knowledge is it still possible to get a system installed or is everyone backed up till next year?

Any battery incentives from your utility? I’m really happy with Tesla powerwall3 13 kWh built in inverter. (Can’t do micro inverters).

 

[mellow]

Choptank Does Allow Energy Storage Under Net Metering​

While they don’t offer incentives, Choptank does allow battery storage systems—but their classification and approval depend on how the battery interacts with the grid:

• If the battery is configured to not inject power into the grid, it behaves like normal load.
• If it can export power back, it is treated via net-metering as generation and requires appropriate interconnection protocols (e.g., UL 1741/IEEE 1547 compliance, rapid shutdown, etc.). They also impose ramp rate limits (≈ 300–500 kVA/min).

 

[mellow]

From what I have gathered so far I would lose money if I installed batteries currently. That is why I was thinking just get a system that I can DIY install batteries at a later point.

 

[dougstove]

Jurisdictions vary but we are very happy with our system with Enphase microinverters, small Enphase critical load backup and gridtie with 1:1 in/out power exchange with our utility. We put 11.4 kW of panels on less favourable roofs (east/west) at latitude 46. We cover ~82% of our consumption (~1100 kWh/mo), including charging 2 EV. The battery backup has been flawless for days for 2 fridges, 1 freezer, wifi and a few plugs. Cost was ~$C30000 rebated to ~$C20000. Payback will be about ~9 years, but the instant backup is worth alot to us.

 

[mellow]

I can get a tesla powerwall 3 13kwh, but it will add about $16k to the costs which I feel is high, this is around the same number from 3 quotes I have gotten. One company did quote a FranklinWH 13kwh battery but that was $19k.

 

[begreen]

Where are folks locating the backup battery? I'd consider it in our basement/crawlspace to keep the batteries warmer, but have a slight concern about fire danger.