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Tesla Solar Inverter – first looks!

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After an unprecedented 2020, Tesla have been busy in the background and this week have announced the launch of a new solar inverter.

An inverter is an important part of any solar system – it’s used to convert DC power (generated by your solar panels) into AC power (i.e. usable for grid export or usage in the home). For Tesla to dip their toe in this end of the market shows an interesting insight into their overall strategy to help manage renewable energy as widely as possible. Their website has a bit of a spiel about the product:

“Tesla Solar Inverter completes the Tesla home solar system, converting DC power from solar to AC power for home consumption. Tesla’s renowned expertise in power electronics has been combined with robust safety features and a simple installation process to produce an outstanding solar inverter that is compatible with both Solar Roof and traditional solar panels. Once installed, homeowners use the Tesla app to manage their solar system and monitor energy consumption, resulting in a truly unique ecosystem experience.”

Tesla Solar Inverter
Tesla Solar Inverter (source: Tesla.com)

Can I buy the inverter in Australia?

You can’t actually view the Tesla Solar Inverter page on the official Australia Tesla website yet (it just 404‘s) – but according to their press release “(the inverter) completes the Tesla home solar system”. You can use the American link which will show you the (fairly utilitarian) details they are currently providing.

So you still can’t get this in Australia but we’ll keep you posted as soon as there’s any information. Tesla are very US focused so hopefully they bring the party to Australia sooner rather than later! And on that note, no news yet on the Tesla Powerwall 3 but we’re still waiting with bated breath. The site for the new inverter notes that it’s “built on Powerwall 2 technology for exceptional efficiency and reliability” so maybe we are a ways off yet?

Tesla Solar Inverter Specifications

The product 660mm high and 411mm wide. It’s available in two configurations, depending on how many solar panels you have on your roof – 3.8 kW and 7.8 kW.

The new inverter will be compatible with ‘standard’ solar panels as well as integrating seamlessly with the Tesla Solar Roof.

A warranty is available for the product and will be a strangely chosen 12.5 years. Haven’t seen a half year in a warranty in a while!

The product will also feature Wi-Fi, Ethernet and cellular connectivity with OTA (over the air) updates, and has been “designed to integrate with Tesla Powerwall and Tesla app”. Matching inverters, batteries and panels can be quite the mission if you’re looking to get the best result so it’s nice to see Tesla working hard to offer more of a ‘full stack’ approach to renewable energy (not just solar power either!).

Lastly, it has 4 MPPT (Maximum Power Point Tracking) controllers. Most inverters have two so it’ll be interesting to see what we’re in for with the Tesla Solar Home lineup!

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Berri Solar Farm to be sold by the Riverland Council

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The $25m Berri Solar Farm is going to be sold by the Riverland council for a firm to take over the development due to a customer pulling out of a PPA (Power Purchasing Agreement).

Berri Solar Farm to be sold by the Riverland Council

Chief Executive of Berri Barmera, Karyn Burton, said the catalyst for the decision to sell the Berri solar farm was due to a major client pulling out of a Power Purchasing Agreement (PPA) due to being sold to another company. 

The farm was approved by the Riverland Regional Development Assessment Panel back in 2017 but construction work hasn’t commenced yet. The council also won a $5 million grant as part of the State Local Government Infrastructure Partnership for the build.

“That was in the mix until June, when they advised (the) council they were going to seek opportunities elsewhere,” Ms Burton said.

“They’d been taken over by a global group and they were looking at their energy needs on a global basis.”

Ms Burton continued to discuss the way the government would like to look at the 

“We’ll sell it as a shovel-ready project,” Ms Burton said.

“Councils are quite risk adverse – they won’t risk going into the market where prices for power fluctuate, not giving us that assurance that we’d cover that as a stand-alone business.

“Whereas there are other solar players out there would be able to do that.”

Mayor Peter Hunt said “despite putting in our best effort to deliver a great project for Council, Accolade Wines and the Community, the timing and justification to continue with the project was simply not right in the end. Accolade Wines was bought by new owners in 2018 and in terms of energy procurement and use, they are considering a number of options. We needed an answer and in this case they made it clear that they could not commit further to the project. The upside is we have fielded several enquiries to buy the project including lease rights to the old Racecourse site. We have expert advice that the project has strong commercial value and that is why we have decided to call for expressions of interest from parties seeking to buy the intellectual property and development rights.”

The council has called for expressions of interest in parties interested in buying the project, until September 27.

Read the article on the Berri Barmera Council website ‘Solar Farm Project to be Sold‘ if you’d like to learn more about the next steps for the Berri Solar Farm. 

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Silent 55 – Solar Powered Catamaran

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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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Power Ledger Extend Solar Trading Trial

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Western Australian based tech company Power Ledger have extended their solar trading trial – let’s take a look at what stage 2 of the company’s p2p renewable trading scheme will encompass.

Solar Trading and Power Ledger

Power Ledger’s blockchain technology has been used since November 2018 to track the transactions of rooftop solar energy traded between 18 households in Fremantle, Western Australia.

The Fremantle Smart Cities project was titled RENeW Nexus and its goal was to demonstrate peer-to-peer energy trading between residential houses. 

Project partners included Curtin University, government-owned retailer Synergy, Western Power, the government-owned network operator, and the City of Fremantle itself.

The trial works by utilising Western Power’s existing network with Synergy’s customers. The Power Ledger platform allows households to buy and sell excess rooftop solar energy in real-time, with residents able to view electricity usage in 30-minute intervals, rather than waiting for their quarterly bill.

Since the trial started in November 2018, Power Ledger has processed almost 50,000 transactions on its platform per month and tracked over 4 megawatt hours of peer-to-peer renewable energy trades. Safe to say it’s been a roaring success, so they’re off to start the second phase of their trial. 

Power Ledger are also working outside of Australia in varied capacity:

  • Silicon Valley Power in the City of Santa Clara alongside Clean Energy Blockchain Network
  • BCPG T77 Thailand
  • Kansai Electric Power Co. (Phase 1)
  • Vicinity Castle Plaza

Saving With Solar Interview with Power Ledger

We had a chat to Power Ledger about the exciting second phase of their renewable energy trading scheme

With ~50k transactions per month currently, what’s the target for 2020?
Power Ledger intends to double the number of participants in the second phase of the trial.

How many trial partners will be involved in stage 2?
In the second phase of the trial we continued to partner with Synergy, Western Power, Curtin University and EnergyOS 
 
Any info on the ‘additional pricing models’ in stage 2? 
The pricing model for stage 2 is similar to stage 1, with some minor tweaks. The partners will be organising workshops and surveying participant to learn more about pricing models. 
 
How much of the trading is automated so the prosumers don’t have to do much?
All the trading is automated. in this deployment however, participants have the option to set their preferred buy and sell prices for peer to peer energy. They can be as active as optimising their prices and trading on a half hourly basis. Alternatively they could go in the platform and set and forget their prices they are happy with.

VPP 2.0 (Virtual Power Plants 2.0)

According to a roadmap for Power Ledger released on Medium last year, the goal is to enact VPP 2.00 – which will allow a lot of options for households who want to trade solar. It also factors in ideas for a two-way electricity grid and options for households to assist the grid – be that through capacity, frequency control, or voltage support.  

We see VPP 2.0, or Virtual Power Plants 2.0, as a natural extension of our peer-to-peer functionality, tying all our other products together. xGrid will evolve into an optimized model of a virtual power plant, to create a conduit for the transaction of value between the owners of distributed energy resources and multiple counterparties.

Self-executing smart contracts will integrate with physical switches in the network, creating an autonomous power market with secure value transfer between consumers, energy markets and networks. For example, a household with solar may normally be trading energy in a P2P market, until they are offered a higher rate by the network to provide capacity, frequency control, or voltage support.

Power Ledger extend Solar Trading Trial to Stage 2. (source: Power Ledger)
Power Ledger extend Solar Trading Trial to Stage 2. (source: Power Ledger)
 
 

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Coles Solar Power – Supermarket signs commercial solar PPA.

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Coles solar power – the giant supermarket company has signed a power purchasing agreement (PPA) with global renewable power generation company Metka EGN. Another huge step for commercial solar and retail solar. Let’s read more about it.

Coles Solar Power

The goal is to buy more than 70% of the energy generated by three solar power plants. The plants will be bnuilt and operated by Metka EGN in Wagga Wagga, Corowa, and Junee in New South Wales – this represents 10% of the company’s entire national electricity usage! Metka EGN are a London based EPC contractor working as a subsidiary of Greek company Mytilineos Holdings S.A. According to PV Magazine, construction of 169MW will commence by EOY and project development is at an ‘advanced stage’. 

Coles Group CEO Steven Cain discussed the move and Coles’ goal to be the most sustainable supermarket in Australia:

“Coles has been a cornerstone of Australian retail for more than 100 years, and ensuring the sustainability of our business is essential to success in our second century,” he said.

“We are thrilled that with this agreement, Coles can make a significant contribution to the growth of renewable energy supply in Australia, as well as to the communities we serve.” Mr. Cain continued.

Thinus Keeve, the Coles Chief Property and Export Officer, had some comments about the Coles solar power scheme – noting that it’s the first Australian retailer to commit to buying renewable energy through a PPA.

Metka/Coles’ solar plants will supply over 220 gigawatt hours of electricity to the national grid. This will result in the displacement of over 180,000 tonnes of greenhouse gas emissions every year. According to the media release this is also the equivalent of the annual emissions of 83,000 cars.

To read the media release entitled ‘Coles agreement secures three new solar power plants’ on the Coles website please click here.

What will Woolworths do to compete with this? Watch this space…

Greenpeace Australia Pacific Senior Campaigner, Lindsay Soutar spoke on the issue:

“Some of the world’s biggest companies, including supermarket chains Walmart and Tesco, have already made the commitment to 100 per cent renewable.

“We look forward to seeing Woolworths make similar commitments,” she said.

 

 

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