Tesla Solar Roof Problems | What’s Next?

Tesla roof woes – Some early adopters have been experiencing Tesla solar roof problems – with one roof in Colorado catching fire and whispers of a secret “Project Titan” which Tesla have launched last year to fix faulty wiring/connectors on Tesla solar roofs America wide.

Tesla Solar Roof Problems

Tesla solar roof problems have been plaguing the company as people begin to wonder about the company’s cashflow, vision, and whether they may have overextended themselves. Well, by people I mean me – talking about Tesla as a whole. Powerwalls, Powerpacks, Model 3s, Solar Roofs. Let me know what you think in the comments. Certainly can’t blame Elon Musk for being conservative or not taking risks! 

An article by Business Insider notes that Briana Greer from Colorado was contacted by Tesla in late July about some ‘voltage fluctuations’ for the past couple of days. They promised to come and fix it on August 8 but unfortunately the house experienced a Combustible Episode before the techs arrived. According to Greer, they also wouldn’t tell her what went wrong:

“They purposely keep a lot of people in the dark. For an energy company, that’s ironic,” Greer told Business Insider in an interview last month. Wonder how long it took her to think up that one. Still, good burn.

Tesla Solar Roof
Tesla Solar Roof Problems (source: tesla.com)

According to the same article Tesla were quoted in Fox Colorado as saying “its solar panels are safe and very rarely catch fire.” Well, that’s reassuring! 

The system was installed by Xcel Energy and made by Trina (who recommend panels be inspected twice a year – something Greer says Telstra didn’t do).  

In August, Walmart sued Tesla after seven of its stores caught fire – Walmart are also complaining that Tesla can’t (or won’t?) tell them why the fire started. According to Walmart’s research, Tesla used faulty Amphenol connectors which failed in their task of heat regulation. This lead to the solar panels being subjected to a barrage of temperature spikes (which, ultimately, can lead to Walmarts on fire). Not great news. In any case, the ‘Project Titan‘ is pretty interesting, click to read Business Insider’s article on it.

If you’re interested in reading more articles talking about solar roof technology and goings on please click!

Got one of these Tesla roofs and having issues with it? Please let us know in the comments. 

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Silent 55 – Solar Powered Catamaran

The Silent 55 solar powered catamaran has been announced and will debut at the 2019 Cannes Yachting Festival. The 2019 model is twice as powerful as the 2018 model with the Austrian manufacturer advising that one has already been build and 3 more are on order.

Silent 55 – Solar Powered Catamaran

“Our best-selling 16.7m innovative solar electric catamaran has been upgraded and become even better than it used to be,” says Michael Köhler, Silent-Yachts founder and CEO. “We did these updates and changes because we always try to improve and to install the best and latest technology available to satisfy our clients. We have built one new Silent 55 already and we’ve got three more orders for this model, which shows that we’re heading in the right direction.”

The Silent 55 includes 30 high-efficiency solar panels rated for approximately 10 kilowatt-peak. The catamaran uses MPPT (maximum power point tracking ) solar charge regulators and lithium batteries, allowing it to cruise through all the way through the evening (i.e. when the sun’s not shining) as well. 

A 15-kVA inverter provides the required power for household appliances. The electrical system also powers an aft swim platform and a 1,500-watt electric windlass. There is also a generator on board in case you run out of solar power. 

According to Robb Report the base price of the Silent 55 is €1.4m. Interested? Go check it out at the Cannes Yachting Festival or click here to learn more about the solar catamaran on the Silent Yachts website. And take me for a spin, please! 

Silent 55 Specifications

Length overall 16,70 m (54.8‘)
Beam overall 8,46 (27.7‘)
Draft 1,20 m (3.9‘)
Light displacement 19 tons
Water 500 – 1.000 L
Waste-Water 2 x 500 L
Fuel 500 – 1.600 L
Solar Panels 10 kWp
E-Motors 2 x 30 kW / 2 x 250 kW
Generator 22 kW / 100 kW
Battery Capacity 120 kWh
Cruising Speed 6 – 8 kt / 12 – 15 kt
Top Speed approx. 12 kt / 20 kt
CE Certification CE-A
Range Trans-Ocean

 

Silent 55 the Solar Powered Catamaran (source: RobbReport.com via Silent-Yachts)
Silent 55 the Solar Powered Catamaran (source: RobbReport.com via Silent-Yachts)

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Doping Solar Cells | Perovskite Tech Upgrade!

Doping solar cells – Swinburne University have been making big improvements on their research in upgrading efficiency of perovskite solar cells. Let’s read more.

Doping Solar Cells | Perovskite Tech Upgrade!

Swinburne University have been working in conjunction with Wuhan University of Technology in China, the University of Melbourne, and the University of Adelaide. Their research is to do with ‘doping solar cells’ – using sunlight as a ‘healing process’ to improve cell efficiency and stability. ‘Doping’ perovskite solar cells with potassium is having a big effect on increasing stability and efficiency of the solar cells. 

We’ve written extensively about the potential that perovskite solar cells could have – potentially overcoming Shockley–Queisser limit (33.7% at 1.34 eV) means that the theoretical conversion limit silicon based solar cells has could be improved upon.

As per Wikipedia, Perovskite tech has been moving along in leaps and bounds over the past 5 years:

Solar cell efficiencies of devices using these materials have increased from 3.8% in 2009[3] to 24.2% in 2019 in single-junction architectures,[4] and, in silicon-based tandem cells, to 28.0%,[4] exceeding the maximum efficiency achieved in single-junction silicon solar cells.

With the potassium ‘doping’, the sunlight starts to repair ‘interface traps’:

“Sunlight becomes a trigger for the positive formation of potassium bromide-like compounds, eliminating the interface traps and stabilising the mobile ions, thus resulting in improved power conversion efficiency,” Dr Weijian Chen, an early career researcher at Swinburne, noted in comments on the Swinburne website.

“This research contributes to the rationalisation of the improved performance and guides future design protocol of better solar cells.” Dr Xiaoming Wen, senior research fellow at Swinburne continued.

“The demonstrated solar cell characterisation methods are at the cutting edge, and will help our industry partners develop a new protocol for commercial perovskite solar cells.” Director of Swinburne’s newly founded Centre of Translational Atomaterials (CTAM), Professor Baohua Jia said about the technology.

If you’d like to read more, the research, funded by the Australian Research Council under the Discovery Project program, has been published in Advanced Energy Materials.

 

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Redeployable solar trial at shopping centres

Redeployable solar is a very interesting topic as the issue of solar panel recycling comes to the fore. This week ARENA have announced funding for redeployable commercial solar via Australian startup Solpod. 

Redeployable solar

Redeployable solar – on Friday the Australian Renewable Energy Agency (ARENA) announced funding for an Australian start up (Solpod Pty Ltd (Solpod)) to trial the installation of movable solar panels on commercial and government building rooftops. 

According to a post on the ARENA website, the startup has undertaken trials with ARENA, ERM Power, GPT and Property NSW.

Redeployable Solar Solpod
Redeployable Solar Solpod (source: solpod.com

Arena CEO Darren Miller, who took over from previous head Ivor Frischknecht last year, was quoted discussing the redeployable solar and their partnership with Solpod:

“Solpod’s new way of installing solar will pave the way for businesses who were previously locked out of rooftop solar to take up renewable energy solutions and options under shorter term power purchase agreements.

“This Australian start up will help to accelerate solar PV innovation and allows for renewable energy alternatives in niche markets, providing a cost-competitive alternative to standard methods of fixed mounting for delivering rooftop grid connected solar PV,” Mr Miller said.

There were also some comments from founder and CEO of Solpod James Larratt, who discussed the new ‘game-changing’ tech:

“Despite rooftop solar being cheaper and more sustainable than the grid, many businesses have made the rational decision to not adopt solar because of other factors such as length of commitment, disruption on site and damage to buildings. Solpod is the game-changer that removes these barriers and enables businesses to capture the savings in energy costs.”

“Solpod’s solution can adapt to meet individual business needs. For businesses that rent their premises, Solpod can offer short-term contracts to match lease terms. For landlords, Solpod allows flexibility for changing site use and will not damage the roof,” he said.

You can learn more about Solpod’s relocatable commercial solar via their website.

 

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Solar glass shopping centre – Vicinity Centres/ClearVue.

Australia’s largest retail landlord, Vicinity Centres, has partnered with innovative solar glass company ClearVue Technology to install transparent solar panels (solar glass) to help their shopping centre’s environmental footprint and potentially save money on energy.

Solar Glass – Vicinity Centres partner with ClearVue 

We’ve written about ClearVue Technology quite a few times on this website, from their solar bus shelters to commercial solar windows, the company have been working hard bringing their integrated clear glass solar panel to market in Australia and overseas.

The company have now partnered with Vicinity Centres to install solar glass in its Warwick Grove shopping centre atrium entry. The solar glass atrium has 26 solar cells inbuilt, which generate up to 1MW. It also works as insulation – with materials inside the window deflecting energy to small PV cells at the edge of the screen. This solar window tech is something we’ve been very excited about for a long time so it it’s amazing to watch it enjoying some real world application! 

According to ClearVue, this is the first commercial installation of fully transparent solar cell glass in the entire world. The solar atrium will power lighting, outside signage, a digital display screen within the centre, and it’ll send any excess energy to battery storage at night. So it’s a pretty far cry from actually powering the shopping centre, but that’s not really the point right now. 

“While other products exist, these are typically optically distorted or coloured, or they are not yet commercially available and are still in the research and pre-commercialisation stages,” a ClearVue spokesman said in quotes to the Sydney Morning Herald.

Solar Glass - Vicinity and ClearVue Technologies (source: clearvuepv.com)
Solar Glass – Vicinity and ClearVue Technologies (source: clearvuepv.com)

The Vicinity Centres general manager for shopping centre management, Justin Mills, was also very excited about the new installation:

“(the solar atrium) reinvents the way we harvest renewable energy, reduces our exposure to the volatile energy market and our carbon footprint – a key focus for Vicinity.

“We’re excited to be trialling such innovative, leading-edge technology and embarking on a global-first in solar energy application.” he continued.

If you’d like to read more about solar power installed at shopping centres, take a look at the Stockland Solar Power Rollout – which will see 12.3MW installed across 10 shopping centres in Australia.

You can also read about Vicinity Centres’ solar project – which is the investment of $28m to install 11.2MW of solar power in five shopping centres.

According to Smallcaps, ClearVue Technologies have also signed a a memorandum of understanding (MoU) with Grafsol General Trading for exclusive distribution rights in the United Arab Emirates (UAE), Kuwait, Bahrain and Qatar. 

“This MoU represents a great opportunity for ClearVue to break into the Middle Eastern region,” said Victor Rosenberg, executive chairman of ClearVue Technologies.

We’ll report more about ClearVue in the middle east next week! 

Have a great weekend.

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