Tesla Solar Inverter – first looks!

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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Smart Inverters required under the Victorian Solar Homes Package

Victoria announced some more details of their solar homes package yesterday – and one of the interesting things that came out of this announcement were some specifics on what constitutes a ‘smart inverter’. 

Smart Inverters required under the Victorian Solar Homes Package

Victoria’s Solar Homes Package provides a rebate up to $2,225 or 50% of the price of a solar power system. This is in addition to Australia’s country-wide solar subsidy (STCs). They’re also responsible for solar battery rebates in Victoria and offer an affordable and exciting way to install solar and/or energy storage at your premises. 

“Victorians have been enthusiastic about adopting renewable energy technology, to take charge of their power bills and help protect the environment,” Minister for Solar Homes Lily D’Ambrosio was quoted online as saying. “Ensuring all new systems are equipped with smart inverters will mean we have a more responsive grid that can handle the rapid uptake of renewable energy.”

With the concept of a ‘smart inverter’ being somewhat of a misnomer, in that it’s not really clear what would make an inverter smart. Solar Quotes initially called it a ‘buzzword’, but, with the release of the Government’s Notice To Market, we are now able to discuss the functionalities an inverter will have to have if can be rebated by the Victorian Solar Homes Package:

a) “Enhanced Anti-Islanding”

No inverter is an island. “Normal” anti-islanding refers to turning off the inverter as soon as grid power is lost, as it has the possibility to damage grid equipment and can also be very dangerous for those on the grid trying to fix things up (as it can turn a ‘dead’ power line into something you really don’t want to be working on). A ‘smart inverter’ would have an inverter which complies with international standard IEC 62116, a comprehensive standard to ensure the inverter is able to work well above minimum safety requirements. 

b) Volt-Watt / Volt-Var

These features “facilitate greater penetration of distributed energy sources (DER) by automatically improving power quality”, as per the Victorian Government. This isn’t a major issue as their Notice to Market notes that 95% of inverter installations under the rebate scheme have installed suitable brands with these options, (and, indeed, 95% of the inverters have ‘enhanced anti-islanding’. 

It’s great to get some clarification on this and we’re excited to see how the rest of the solar homes package ends up. 

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True Value Solar to shut down in Australia

True Value Solar, a German owned solar installation company in Australia, will shut down over the coming months as it struggles to compete in the local marketplace.

True Value Solar Shutdown

True Value Solar
True Value Solar

True Value Solar was once Australia’s biggest solar installation company, so this comes as a bit of a shame. With that said, their heavy discounting and price-focused product range led to its own issues as well. The company has 3.2 stars on ProductReview and has been sinking rapidly as the solar race to the bottom continues – as the old saying goes, good price, quality, and speed – you can pick two. Unfortunately this has now claimed another scalp and True Value have decided to exit the market. 

The company had been owned by German company M+W Group since 2011, when they invested in a controlling stake. They bought out the entire True Value Solar company in 2013 and have since rebranded as Exyte.  

Exyte, who turns over $4 billion per annum, have decided to exit the country and shut up shop. A map on its website with over 20 countries where Exyte operate no longer shows Australia .

True Value solar MD David McCallum hasn’t made any comment yet, nor has Exyte said anything official, but comments in One Step Off The Grid note that the status of the company (i.e. the upcoming closure) was ‘confirmed’ by RenewEconomy today. The current ~30 employees have already been informed of plans to shutter the company.

It’s understood that the winding down of True Value will be a gradual process so they are able to honour existing contracts and warranties as much as possible. No word yet on how it will affect their commercial solar arm. 

If you want to remember the good old days, please have a look below which shows you a ‘typical True Value Home Installation’.

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PowerBank trial for WA Homes | Tesla PowerPack

An official announcement by the Government of Western Australia on Wednesday notes that they will partner with Western Power and Synergy to offer a Tesla PowerBank trial via a 105kW (420kWh) Tesla PowerBank battery.

PowerBank trial for WA Homes.

 

PowerBank trial for WA Homes.
Tesla PowerPack Commercial Battery – PowerBank trial for WA Homes (source: Tesla)

The 24 month trial period means that customers participating will be able to ‘virtually’ store excess power they generate during the day (it’ll be fed into the utility-scale 105kW Tesla PowerPack Battery). They can then use 8kWhs of the PowerBank’s battery storage without needing to install their own power bank. According to the press release (and it’s true!), “8kWhs is enough to power the average suburban home for over one hour during peak time.”

Energy Minister Ben Wyatt discussed the Tesla PowerBank trial in a series of interesting quotes which explain how helpful this trial could be to Mandurah residents:

“PowerBank is an ‘in front of the meter’ storage trial which allows invited local customers to store excess electricity from already installed solar PV systems to then use it during peak times.

“This is another Australian milestone for the application of utility-scale batteries for the benefit for customers, drawing on the groundbreaking work by Synergy in its Alkimos Beach energy storage trial.

“For the first time in Australia, a utility-scale battery will be integrated into an established suburb’s network, like Meadow Springs, that has a high level of existing solar PV uptake.

“At the cost of one dollar a day, customers will have access to 8kWh of battery storage to use any time after 3pm each day.

“This trial shows that the WA Government is serious about working with renewables, delivering for taxpayers and planning for our energy future.”

Click here to view the media statement from the WA state government.

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Natural Solar – Blockchain Powered Community Solar

Australian company Natural Solar have advised that they will be using the power of blockchain technology its its latest community solar offering – a new housing development just outside of Sydney which will see 12 homes share power with each other.

Natural Solar

Natural Solar - Blockchain Powered Community Solar
Natural Solar – Blockchain Powered Community Solar (source: naturalsolar.com.au)

Nine are reporting that each home will have a 5kWp solar system and an 8kwh sonnenBatterie 8 installed. Homeowners will be guaranteed up to 20 years of $0 power bills, but they will have a $30 / month bill to sonnenFlat for the program. Power will be shared between the 12 houses and any energy movement will be recorded on the blockchain to record and track the efficacy of of the project. Is 12 houses enough? What happens when it’s 4pm on a Tuesday and 8 houses have air conditioning on? 

If this is a bit complicated to understand, Chris Williams, CEO and Founder of Natural Solar,  explains the concept as a ‘super battery’:

“Utilising Blockchain technology, we are able to join all batteries together to create one larger ‘super-battery’ that can power all homes in one development.

“An advantage of this is for the first time ever in Australia, residents will now be able to borrow power from their neighbours who have excess stored in their own battery, creating a complete sharing economy amongst houses.”

What happens if the energy runs out?

This question was put to Williams who said that, although this model means the developer won’t have to pay for expensive grid upgrades, it’ll still have access at all times: 

“In the event houses need additional power and they can’t borrow extra from their neighbours, they are able to automatically draw this from the grid. If the home is signed up to the sonnenFlat energy plan, this will be free of charge for most houses, provided this fits within their annual electricity consumption.”

The project is set to launch by September – so watch this space and we’ll keep you updated on the progress of Natural Solar’s great project.

 

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