Tesla Solar Roof: End of the Honeymoon Phase!
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- Опубліковано 10 вер 2021
- All the numbers from 8 months of owning a Tesla Solar Roof. The first 1000 people to use the link will get a one-month free trial of Skillshare Premium Membership: skl.sh/thisguystesla07211
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Hey, I'm Sven from This Guy Edits, a YT channel with over 400K subs. I've recently become a Tesla fan boy and want to document my experience with the Tesla Solar Glass Roof as it is being installed on my house.
It's been years in the making and this version three roof is supposed to be finally ready for prime-time. Generally, I try not to be an early adopter, and would rather like to see proof of concept first. But since the Federal Tax Credit is about to run out, I decided to take the plunge now and see if it works out.
#Tesla #SolarRoof #GlassTile
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All the numbers from 8 months of owning a Tesla Solar Roof. The first 1000 people to use the link will get a one-month free trial of Skillshare Premium Membership: thisguyedits.com/skillshare7
Save on your Tesla roof or car: thisguyedits.com/tesla
Solar Roof 24ft Cleaning Pole: amzn.to/38UZXzz
Water Pump: amzn.to/3jXZm6q
Hey, I'm Sven from This Guy Edits, a YT channel with over 400K subs. I've recently become a Tesla fan boy and want to document my experience with the Tesla Solar Glass Roof as it is being installed on my house.
When your roof will pay off?
@@youshortsone 77 years
@@x3ICEx not even close :) Next video you'll find out.
@@x3ICEx My PV installation in Ireland will pay itself off in less than 8 years - and we don't even get a feed in tariff. Also, way further north and not really known for sun. I suspect a PV install in California will pay itself off way quicker.
Would love to see these numbers if you had vertical Geothermal Heating/cooling pumps (look up Dandelion Energy)
"I need to wash my tiles because it never rains here."
"The solution was to use rainwater!"
Loved the video btw
@@southbaysolarcleaning4348 boooooo advertise elsewhere
@@briannem.6787 Just report for spam they'll get banned soon enough
@@daylen577 I'll do that!
@@southbaysolarcleaning4348 i think your comment was respectful and did not warrant this backlash/hate from these chrome domes. You didnt push your business.. u pushed your video that is extremely relevant to this OPs video. Its one thing to spam ads, it's another to show ppl who might have found this video because they're specifically looking into or searching cleaning tesla solar roof tiles, or howto's on it. Even more so after thought since OP may not have been as thorough in his video about cleaning the tiles as people who searched for cleaning videos may have wanted to learn. And without clicking ur profile and actively trying to look at your videos, which is what these chrome domes are acting like you just forced them to do , while they watch a video with ads all over it and in it, from a guy who's income comes from getting you to watch ads or even more so... buy products he supports. So with all that being said.. your comment about informing people that you exist and heres a video or 3 about solar panel cleaning can be found on your channel(IF THEY CHOOSE TO LOOK FURTHER INTO THAT SORT OF THING THOSE PEOPLE WOULD APPRECIATE! and those who are not... probably never would have seen your comment anyways.)
People... relax... were all here existing together. This guy/gal is not causing trouble, just lettin you know he's got a video about cleaning solar panels. Ignore it if it bothers you. Holy shit! I just wasted 5 minutes of my life for this for God knows why... 👋 goodbye.
@@tre420gaming4 spam is spam.
Tip: set up a simple and cheap sprinkler system on your roof and control it with an Arduino so that it creates artificial rain for 5 minutes every 2 weeks.
Ok Michael Reeves
@@MrBonners Ok Mark Rober
SoCal has the highest levels of TSD and this would cause mineral build up on the roof.
Looking at those numbers, I think I would forgo the Tesla roof tiles, and just go with the good old fashion glazed and framed photovoltaic panels. I think you could easily install more than 9.7 kW, for less than half the cost. That would greatly reduce the time for return on investment, and, guarantee, that you will produce more electricity than you use. Another benefit, is that the gap between the panels and the roof acts like a giant awning, which will greatly reduce attic temperature. That takes burden off the AC, ultimately reducing energy used by the AC system. Granted, panels aren't as "pretty" as the tiles, but for me, efficiency and cost effectiveness trumps aesthetics every time.
I generally agree, but the one case where the solar tiles would really make sense is if you needed a replacement roof anyway. In that case you may come out ahead vs new traditional roof + panels.
@@GaryVirta Another consideration, is if you have a "English Tudor" roof, which has a lot of triangles, you will have a much easier time utilizing the available roof area, just because of the small size of the tiles, vs. large frame panels. There are also some HOA's that may not allow the panels, but you can "hide" the photovoltaic system by using the tiles, which just look like shingles at a glance.
I did the Tesla calculator at it was like 80k
@@GaryVirta puhaha nah dude that roof is never worth it. unless it costs 20k
@@joshnolastname407 Yep like 8-10x more than a normal shingle roof.
I live in California I just cleaned the ash off my solar panels and it increased my productivity by 30%
My level of laziness would simply memorize where the important tiles ( ones with the solar ) are and just clean those and leave the rest as is
my level of laziness would be to set up a sprinkler system on a timer to clean said tiles daily
@@2nd3rd1st
spend $60,000 on solar roof
spend $min wage for rando kid to clean it.
nothing could go wrong
@@RufflezRevolution If keeping them clean is so important seems like a sprinkler system should be part of the setup. Also he could have just used a pressure washer on low to clean the tiles which would have given him more power and taken much less time and eliminate sore muscles from using that brush!
@@2nd3rd1st I'm sure putting kids on a roof is a great idea? Like theyre roofers or something lol
@@2nd3rd1st : Yeah But, the repair cost of broken panels might sour that Idea....
Clean with tap water, then crystal clear rinse with Rain Water. otherwise rainwater gets contaminated very quickly. After all, roof is initially very filthy - more than tap water. after 1st cleaning, only minor residue can be cleaned with more pure rainwater.
You must not have thought your response thru 🥴 use rain water where it doesn't rain... fr? Genuis!!
@@TheBoostinbobby he had a rain barrel - watch the video duh
@@pablopicaro7649 did you not hear him say it hasn't rained since March there ? 🥴 not enough rain 🥴
I did exactly what you’re suggesting three weeks ago. Used a high-pressure hose with tapwater to clean the dirt off my panels in San Benito County California (Intensive Ag industry creates lots of dust and no rain since April. Cleaned four panels at a time then rinsed off with RO water. I have a old under sink RO system installed in my garage producing clean (20 ppm TDS) water to atmosphere which gives me 1 gallon of product for 1 gallon of waste. Filled six 5 gallon buckets. Used a small hi pressure irrigation pump (Amazon $130) which gives me 65 psi output. More than enough pressure to reach the ridge of my roof standing on a step ladder. Took about one hour to clean 22 solar panels. Solar panel output jumped from 37 kWh to 42 kWh. And the panels look much better.
@@TheBoostinbobby what a clown. Watch the video lol
I did also a quick evaluation of gain after cleaning traditional pv monocristaline panels and got around 15%...thank you for your very nice video.
That’s not merely a little bird, it’s an amazing hummingbird-mesmerizing creatures
You could set up a pressure pump and sprinkler system on a timer to rinse them at the beginning of everyday, theoretically it’s a reticulated system so the barrel needs to refill before it empties, this way the tiles are always ready to go and at maximum potential
I have watched David Lynch's weather report almost every day for years. Thank you for citing him as a source in this video, lol.
Thanks for sharing your roof project journey!
You bet!
I love these videos so much, thanks for another upload.
I live in Baghdad where temperature in August reaches 124 F. Surprisingly, the PV system we have produced more energy when it is dirty and completely smeared with dust. I anticipated this weird observation by temperature effect. I think, in extremely hot weather, dust reduces the temperature by decreasing sun radiation reaching the module surface. And since temperature itself exerts much more on the PV performance than the radiation intensity, the system performed better when it was dirty.
I think it's because of temperature coefficient. Panels are optimal at around 50 degree Celsius. The dust might have reduced it a bit from full performance
Solar panels can actually overheat and stop working.
Wonderful video with great info! Perfect timing too, I'm getting my roof installed in about 4 weeks and I can't wait.
Checked this channel numerous times for a new video! Thank you for posting 😄🎉
Glad you like the videos. I don't post often, but when I do I try to make it insightful and entertaining.
Next time you wash add a bit of dawn dish detergent and dish washer rinse, that also helps water shedding an mineral deposits. Works great on home windows also.
Great breakdown. Nice detailed number descriptions thanks. I never realized the cost associated with sand build upend resulting efficiency loss.
We have the same ladder. I love that ladder. Thanks for the bill rundown!
Thanks for the update!
Loving the content. I've got a tip that might or might not work
You could put up a hose on the top of the roof, connected to the rainwater barrel, with holes made to wash the tiles once a month. tweaking the amount of holes on the hose and adjusting the power of the pump so you don't use up all the water incase of a dry month.
Thanks for the great info, as always!
Thank you very much for making this video. Exactly the info I'm looking for before buying a Tesla roof.
You are back, my favorite Tesla Guy.
Your editing is impeccable! 👌
Thank you for all your work sir. Brilliant.
If you want to save your rain water or run out, you can get a RO/DI system at a aquarium supply store. It will generate 0ppm water and could be used to rinse the tiles.
Great upgrade to your home, even with some shortcomings to performance. I see you like having one. Also i must compliment you with the extensive detailed reporting. I would advise you to get third party power storage in the form of LifePO4 batteries. For that 15.000 dollar (2 TESLA power walls) you could have had approximately 30 x 500Ah units capable of storing 15KAh (180KWh) or more with a life cycle of 20.000 charges (days) and a DOD of 80%. You could also add a wind turbine to add some KWh 24/7. Having to pay your utility company still some basic money is not making it a free system that pays itself back quickly. Sometimes it is cheaper to charge the Walls from the mains with a KWh price of 8 cents at night. 15-25KWh wil get you a full day off-grid less than $1.20-$2.00. It all works though, so glad you have it all installed.
I had a similar problem with NPD 'Nocturnal Power Drop-off' - I got round this by installing some 'Lunar Panels' along side of the solar ones - very effective...
Thank you for the video, well made with really useful content, appreciate it
I have a 10kw system with 35 traditional panels made in the usa. I rinse them off with tap water 2-3 times per summer. Takes me 15 minutes on my ladder. The panels look great without brushing them. We have soft water from the tap. I paid 12k for the system and expect a break even point at 7-8 years. We charge 2 Teslas with them as well as ac, water heater, oven and dryer.
Financially makes lots of sense for me.
Regular cleaning increase production also prevent sticking dirt on tiles. It might be not possible remove dirt if you ignore them too long.
As another data point, I’ve done A/B testing using hose water to just spray (no brush) clean every other panel in my solar array, and I also saw approximately a 10% difference in production between the clean and dirty panels the next day. (San Francisco, enphase microinverters)
I have Enphase in Florida. It rains 25 hours a day here. I am def in the “you don’t need to clean the panels ever” camp and mine started getting lines that stayed even after the rain. Enphase app showed a negligible loss. But aesthetically the wife wasnt happy. So i had them cleaned. The increase in power would not cover the cleaning costs. There was some fancy name dor the lines. It wasnt just pollen. It was lichen and could eventually grow big enough into the panels to hurt it. So I got it done. Looks way better. They used deonionized water only. And a special robot to drive over the arrays. $215 for 25 panels done the same day.
Well done! Very informative!
that is bloody fantastic wow
That was interesting and informative!
Good thing about collecting rainwater is that you can reuse it to clean the roof, catch the runoff and reuse it again and again (minus evaporation), however I noticed that not all of the roof has gutters to collect it, so maybe something to consider? An even bigger pump for a more powerful and wider spray pattern would help too, though I'd build a robot to do it for me! :-)
Loving the music at 16:30 reminds me of Bobby Duke Arts channel when he's starts his hilarious antics/duck walking to find "wewd" 🤣🤣🤣
Bravo çok güzel bir uğraş olmuş. ihtiyaç duyulan araç gereçlerin maliyetini güneş enerjisinden karşılamış oldun sonuçta. Devam videolarını bekliyorum. Başarılar.
Thanks for the data, real-life use is the best way to actually price out the economic viability of something like this. High level takeaway I'm seeing is that in a best-case scenario like So-Cal (expensive electricity and lots of sun) is a 23 year breakeven on your final out-of-pocket cost from the last video, or a 32 year breakeven on the unsubsidized $50k installation. Looks like there's still a ways to go before this can become mainstream. Looking forward to the full financial breakdown.
It will obviously be case by case but it's important to take into consideration the cost of installing a normal roof if that is somethign that will need to be done anyways.
@@djbutch123 yes but if you have to redo the solar Panels with a solar roof you have to redo the roof again every time
@@BrosBrothersLP ... What?
And then not many people stay in there house for 30+ years without moving. That's a long time.
My understanding is that the intention of solar tiles is not to replace EXISTING roofs, but replace the purchase of a NEW traditional ceramic roof. In which case the arithmentic has to be based on the marginal cost.
Great video. I've been following all your solar roof videos and you're one of the reasons we decided to go with the Tesla Solar roof as well. We are scheduled for install in mid October and we are excited to get this going. I'm looking forward to the next video on your full price breakdown. Keep up the great content and information.
Maybe try making a video on your system as well? There arent many videos of these systems and many people are interested in them. I would definitely want to see a video of your system as well
yes please vlog your experience
Didn't the price of the solar roof skyrocket lately?
literally garbage dont buy fads
@@keithmoriyama5421 why is that? Please explain, as I was considering Tesla because I have a vintage home and other brands would not look right on it. Thanks!
set up some small diameter hose hidden along the ridgeline to make it "rain" on demand. job done.
Interesting video !
Concerning the maths to decide wether it is worth it to clean the roof or not, it only is valid for the time period you did your tests on.
If the tiles get dirtier every day, since the time to clean remains constant where it would be beneficial to do the cleabibg (likr once every 4-5 years)
Bravo! Just watched 3 of your YT videos and I have subscribed. As a sheet metal roofer I can confirm the cost of a quality standing seam (concealed fasteners) metal roof is about 3-4 times the cost of an asphalt shingle roof. Although that depends on the shape of the roof, overall access and steepness of said roof. The part that most, even those in the roofing industry, are not aware of is that a quality sheet metal (galvanized/galvalume & painted 26 gauge steel) roof will last 150-200 years using today's technology. In fact there are mulitple examples of old metal roof replacements of over 100 years old using the technology of the day (1900-1920s). If your using pure zink, the manufacturer Rhienzink now claims 350 year lifespan and copper is thru the roof 😉, likely 800 years or more. So the question seems to be how long will the Tesla roof last before repairs or replacements are required? I've seen traditional solar panels last over 35 years in good condition. On a side note, traditional solar panels are typically installed on standing seam metal roofs using friction fit clips that do not damage the integrity of the roofing at all. Given the life expectancy of solar panels (50-100 yrs) today, the big question remains, how long will a Tesla roof last?
Great content, much appreciated.
Nice! Keep going man you are going to be huge! Just earned a sub :)
Small changes on power usage and you are positive all the time. Like few decrees higher temps on ac, Less lights, etc. 200kwh usage per month is easy to reduce. If you use osmosis reversal to our tap water you can get rid of that calsium.
Thanks for sharing! How much money did you spend to install the system? E.g. what's your ROI time period?
Great video . Nice " Tap Water"
*Tab ftfy
Looking forward to next video!
And here I was contemplating getting a diesel welder/generator for my house. I think it would be cheaper. Thanks for the documentary. It seems to be in there with new vinyl windows. Yeah you Will save money on heating and cooling but you'll pay them off in 20yrs with your savings. Though replacing the roof at the same time......
Yes please give us the labor breakdown.
Wow this is really hardcore way of cleaning tiles!
what are your ac settings? would changing your current program be able to get your better energy use vs still be comfortable?
Dishwashing rinse aid would help greatly with the tap water.
You could use normal tap water for the general cleaning, and then flush with the rain water to avoid limescale (calcium)
It generally feels worth it if you need a new roof and frees up monthly revenue. Otherwise it just feels like a luxury expense because of how long it takes to pay off.
Does it last as long as a normal roof though? I don’t think so. Normal panels can be swapped easily.
@@KP3droflxp The roof may last a few decades longer than the panels inside the tiles. And you're probably right that the roof itself won't last as many decades as some other types of roofs, but what is the issue with that? Cost - and perhaps environmental - should be the only concerns, since I don't think anyone seriously thinks that a few extra hours of work in their entire life is going to be a deciding factor.
@@Muskar2 no but it means that you have to redo the hole roof again when you need to redo the solar panels. So you basically never brake even
@@Muskar2 That's the point, the panels will stop being useful pretty fast and you have to replace the whole roof again.
@@KP3droflxp Why do you "have to" replace the roof when the solar panels stop being useful? It just becomes a roof by then and then couldn't you just add standard solar panels if you still want independent energy generation?
Especially with all the smoke from the fires leaving soot everywhere…
lol i saw your video about installing the roof probably a week ago :D nice catch up
I wish we got a rebate of the same in Perth Australia. we pay 29cents a unit and we we get 7cents back but they are making it even less soon.
The important thing is that this are thinn-film panels. They have pros and cons, but one of the big pros is that they arent as affected by dust, shading and weak sunlight ( which gives them more output at morning and evening), but they have low performance - what comes to more space needed.
In my opinion Tesla made a good choice there, but I dont know if some "normal" paneels with high performance and more cleaning required wouldnt be a better choice in very sunny places to generate more income to save at the electricity bill.
Still this choice to deal with dust is interesting and time will tell how long such a roof performs over it´s life cycle.
Greeting from Italy and keep up the good videos!
Finally Sven you're back. First of all, nice shoes.... Really nice video on your tesla roof. I was wondering if it's more difficult to clean your roof because the surface is not smooth and dirt will stick better on rough tiles.
It wasn't all that difficult to clean the roof. The glass tiles are slightly hydrophobic, so water, slide off easily
A brush works better on that kind of surface. A squeegee just won't work. You wouldn't be too concerned about mineral content, if it was a mirror smooth surface, on which, you could use a squeegee.
I guess we can expect more vids thanks to Skillshare :). You produce good vids, thanks.
My friend who has same solar roof panel from tesla uses Power Wash to clean off the dust and it only take 15mins.. your hardcore for using brush for every panel + small amount of water.
EXCELLENT EXPLANATION !!!!!!!
You have to periodically clean them too, and I do not know if hurricane-strength winds can catch the panels and rip your roof off. Which also means you have to replace your roof before getting those panels.
Can we also see how the pg&e “True Up” is impacting your savings.
Thanks for sharing your experience with solar energy and Tesla equipment. Strictly consecutive video content! I have build 5.04kWp solar shade car roof connected to my house with standard PV modules for selfconsumption, zero grid feeding, without battery and without electric vehicle. One year statistic report says: energy consumed directly from the Sun is 33%, energy from the grid was 67%. This is the result for my consumption profile, and for my region (Bulgaria). Total system build cost was almost 4,5k Euro. ;)
THAT is a BARGAIN! That is only US $5,300! I am getting similar results from my Hybrid Van: about 1/3 from Electricity and 2/3 from Gasoline (Petrol). A Tesla Home Solar system is going to cost me about US $32,000 (or 27,300 Euros.) But, the ROI will be more than 30 years. Still, the future is coming!
What I see from the numbers. Is to be energy independent. One needs to have a heat pump, solar with a large battery storage, and a wind turbine to offset the losses during the evening and low solar production.
Just wondering how much was the total installed price roof and the battery bank?
Thanks in advance
Connect your water hose to a soaker hose. Run the soaker hose a long the top ridge of the upper part of the solar roof. So you don't have to climb the ladder. I climb the ladder twice, maybe three times a year. To check my cutters cause a blue J bird and other birds like to build their nest in it and pounce on it. To let know their in hood.
Id like to have panels, but I live in Finland and its sunny only in summertime, mostly.. Why not cleaning tiles with air? Compressor and go..
There are anti-spotting agents you can rince with that will reduce spotting (used in dishwashers). I don't have a tesla roof, but I use a micro-fiber shammy to dry our panels after washing (with Dawn) to prevent spotting/calcium build-up. Also, I wash when the roof is cooler, and not under direct sunlight.
Ammonia is rinse-aid. It's basically just Windex. That's the anti spotting chemical.
Hi, thanks for the effort making the video, I'm just wondering whether it would be fairer to assume that the dust build up and lost efficiency is from the last time it rained rather then the installation of the system? and also shouldn't we assume that, if you wouldn't have cleaned the tiles, efficiency would have further deteriorated until the next rainy or cleaning day?.....just a gut feeling here
It's a real grab bag of good data and rigid decisions that ignore other options
Hey I am India , I just watched your entire videos in one go. It was a great experience to watch the whole process 👍
Well hello India
@@f87115 hello brother
bro delhi mein future mein mein bhi solar tiles/panels use karunga but winters mein thodi problem hogi but in summers ohho
If you have an AC you can use the condensation water dumped by the AC.
That depends on the humidity of the supply air. A home on average is about 40% humidity and really isn't enough to pull moisture out of the air at 70 degrees due to the dew point. If you live in the south east or in a high humidity area then this would be a much more viable solution. Again, you're not wrong and any little bit of water would still be good to use rather than just dumping it down a drain.
Enjoyed the video, good camera work and breakdown of information. Keep it up!
Glad you enjoyed it!
U should add some kind of pre filter that lets an amount of water to by pass the barrel so the initial dirt debris by passes capture
would it have been possible to hook up the rain barrel pump to a pressure washer?
I would definitely figure out how you can safely move around up there (harness and safety line) and then you’ll knock that job over in a couple of hours. I can do my traditional 9.28kW system in about 30 minutes. I just use a hose with a brush on the end and detergent - works great. No hard water in Sydney.
Watch out with detergent on your roof, this guy just has a rainbarrel but alot of people forget about raincollectionsystems beeing used for toilets or washing machines and maybe lawnwatering. U wont be laughing if your entire lawn is dead.
but how many kw is the roof? That makes a huge difference in measuring efficiency.
Do you have any concern about the waviness in your roof? 7:16 time stamp shows your panels with excessive depression in the middle in several sections.
Also, is tesla planning on reinstalling your gutters or is that something you just havent gotten around to? would have been nice to recapture the rain water you used to clean the panels.
You could rinse the dust off with tap water and then rinse with distilled water.
You should collect your AC water as this is effectively distilled water so will not have any impurities, calcium deposits or dust that rainwater tends to collect from the air.
You really cleaned the roof the hard way. Just use a rinsing aid after cleaning with tap water, and then rinse with tap. Do the whole thing in 30 minutes.
"If you think hiring an expert is expensive, wait until you hire an amateur"
@@Alyx_Vance true AF. I've spent ages trying to learn the fastest way to clean shit like this with no spots. he did it literally the hardest way possible.
At least your roof looks amazing clean
Hello from Germany.
Channel is subscribed!
I have a question
Your complete roof is covered with solar roof tiles. But it is only certain areas of the tiles that generate electricity right? If I understand correctly, there are three sections that generate electricity?
Greetings from Germany
At 7:20 in the video, you zoomed in on the roof and the Tesla tile looked like they were warped. Also, wouldn’t the rain rinse the dirt from the panels?
for the amount of dust that builds up over a year in so cal, especially desert areas, its still worth it to clean, but the calcium spots are negligible compared to the level of dust, (compare yr windshield before its cleaned an after with cal. spots, still worlds better) which can get pretty gnarly, i just get my power washer an spray it down. 30 minutes, once a year. makes a difference
great video
Periodically spray down your roof with pressurized water to keep the panels from getting too dirty between actual cleanings. I bet you'll see much better results and you'll need to fully clean them less often as well.
I’m not sure tap water is so bad. I use it to rinse tree pollen off my panels every day in the spring in Massachusetts. I do it via a hose from the ground and the panels go from pale yellow to black. Definitely a huge improvement. A few times a year i go up on the roof with the hose and spray the panels hard up close on Stream setting. I think the calcium spots must be very subtle because I can’t see them at all on the panels, but i can see the tree pollen easily.
Nice to be in the US. Australia, costs 32 Cents per KW of power to buy, and we can sell it for 8 cents per KW. However there is likely to be an introduction of a "sun tax" as Power companies are complaining they are not making enough money.
Maybe you could run a drip line long your ridge and schedule it to “rain” every so often.
I would wash a small section with tap water then spray it off with rain water before it dries up.
i just want to say you said next video for the update so I'm guessing we'll see that in about 4 months 😄
Did you recycle your washing water? Collect it back into barrels?
they need some sort of car like ceramic coating resistance to uv rays but I would guess that would somehow interfere with the sun rays getting to the cell and probably cost +$1000 eliminating any cost saving on energy
How much more is the roof compared to panels? Seems like the roof is an aesthetic premium.
Wouldn't it be better to wash the roof tiles with water from your hose bib? maybe a converted pressure washer or something not quite so strong with bristles like you build for the rain water? That pressure would make the cleaning of the dirt faster... You could also incorporate some kind of soap dispenser to put some dish soap in the mix. after finishing a section use your rain water just to rinse the surface and remove any minerals that were in the tap water. The only trick would be to make sure your first wash doesn't dry before doing the rain water rinse. Also, would adding something like JetDry to the water help to keep minerals off? nice video.
I have an 8.1 kW tesla PV system (no roof no powerwall) and it's hard for me to compare usage, because I was very thrifty with electricity usage. With clean cheap electricity powered by the sun, I started to use a lot more electricity. Your video doesn't mention differences in usage, but your gateway should track power sent to the house vs to the grid. Perhaps you can compare your previous years DWP bill vs. power to the house from your Tesla app.
FYI.. since I have no powerwall, I have no gateway, tracking power to the house vs. grid accurately, thus I have no direct comparison.