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Printable Solar Panels / Cells – A Primer.

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Printable Solar Panels – at some point it may be possible to use a simple desktop inkjet printer to print your own solar cells. We’re a while off that yet, but with great advancements in the technology over the last couple of years, let’s take a look at what the future holds for printed solar cells!

Printable Solar Panels

Printable Solar Panels - University of Newcastle
Printed Solar Cells – University of Newcastle (source: abc.net.au via University of Newcastle)

We wrote last week about the University of Newcastle and their foray into printed solar cells – today we’re going to take a bit of a deep dive into the situation and see where we can expect this technology to go in the next few years. 

The University of Newcastle are reporting that their latest tests in Newcastle brings them “about two years” away from launching their product onto the commercial solar market. Leading the charge has been University of Newcastle physicist Professor Paul Dastoor, who created the electronic inks which are used to print the flexible solar panels.

The process is According to the ABC, semi-conducting ink is printed on a transparent plastic sheet for the first layer, and then layers are printed on top of the other, until the cells are about 200 microns thick. For reference, human hair is around 50 microns. After that, a “top contact layer” is done again, reel-to-reel, using a technique known as sputter coating, according to Professor Dastoor.

They estimate the cost of their modules at less than $10 per square metre which is extremely cheap – the main problems are the efficiency of the printed solar panels and ensuring there’s enough space for them as it’ll take quite a lot of room on a roof. They use a lot of plastic to manufacture as well so looking at ways to recycle the waste of printed solar cells is extremely important. For that reason, in six months Professor Dastoor and his team will pull the printed solar cells off the Melbourne roof they’re currently on and investigate ways to minimise environmental waste. 

 

 

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Printed Solar Cells | University of Newcastle

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The University of Newcastle has been able to deliver printed solar cells at a production cost of less than $10 per square metre. They are now powering a Newcastle business and showing results in the wild. Amazing steps forward for solar technology, and in our own backyard! How long until we can print solar cells at home using inkjet printers?

Printed Solar Cells – Breakthrough Technology

University of Newcastle physicist Professor Paul Dastoor has created electronic inks which are used to print the flexible solar panels – offering “unprecedented affordability” and could help solve the energy crises in New South Wales and Australia-wide.

“We are changing the climate, we know it’s because burning fossil fuels and we have to shift to renewables, even if leaders in Canberra can’t understand that,” he told AAP via the Bega District News.

“This technology has the potential to be enormously scalable … it’s fast, it’s low cost and doesn’t require anything special.”

The team are able to print hundreds of metres of solar cells at the Centre of Organic Electronics at the University of Newcastle. If a commercial scale printer were obtained, this could easily be upgraded to kilometres of cells. 

“The low cost and speed at which this technology can be deployed is exciting as we need to find solutions, and quickly, to reduce demand on base-load power – a renewed concern as we approach another summer here in Australia,” Professor Dastoor said.

 
Printed Solar Cells via Paul Dastoor
Printed Solar Cells via Paul Dastoor of University of Newcastle (source: newcastle.edu.au)

Around 200 square metres of the printed solar panels has been installed at an industrial site owned by logistics company CHEP in Beresfield, near Newcastle.

This is a fantastic step forwards for solar panel technology People who are wanting to install solar into a rental property or those who don’t have access to a roof (apartment solar) will be licking their lips at the possibility. 

According to Wikipedia, these printed solar cells have a few main drawbacks:

  1. The efficiency of inket solar cells is “too low to be commercially viable” 
  2. Indium is a rare material and could be gone in 15 years.
  3. The ink needs to be weather resistant and can survive harsh conditions.

It looks like the efficiency of Dr Dastoor’s printed solar panels is around 2-3%, but at only A$10 per square metre when manufactured at scale, it looks like these modules are certainly commercially viable, even if they’re not the most efficient cells in the world. 

In six months they will remove the test panels from the CHEP roof and have a look at recycling the material. Professor Dastoor and his team will also run some statistics on how well the printed solar was able to perform. We’ll keep you updated! 

If you want to learn more about flexible solar panel tech, please click here. 

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Bendigo Sustainability Group – Community Solar Rooftop

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The Bendigo Sustainability Group have launched a crowdfunding campaign to install 30kW of community solar PV at two sites. 

Bendigo Sustainability Group

The Bendigo Sustainability Group are hoping to raise funds to install 100 solar panels for the Eaglehawk Badminton and Table Tennis Stadium – which costs around $30,000. So far they have 73 panels fully funded. The Community Housing Victoria appeal is for the same amount of panels but is struggling a little bit to reach its target – with around 50 panels currently funded. The fundraising round will close on July 31 so hopefully they can get a big push for the last week of donations and end up with both projects fully funded. 

Community Housing

Bendigo Sustainability Group - Community Housing Solar
Bendigo Sustainability Group – Community Housing Solar (source: bsg.org.au)

The BSG are hoping to install a solar PV system on the roof of 8 Community Housing Limited Units in Golden Square, with an aim to reduce electricity bills by around $300 per year for each resident. It’s admittedly a small project, but a great boost for low-income solar in Australia as we hopefully see other councils and communities try to make solar more affordable/feasible for low-income earners.

Eaglehawk Badminton and Table Tennis Stadium

BSG are hoping to install a solar PV system on the roof of the stadium to significantly reduce electricity costs to both tenants. These facilities are Olympic standard and making them cheaper to run will be a huge benefit to both the badminton and table tennis communities. 

Bendigo Sustainability Group spokesperson Chris Corr said that the final size of the solar systems will depend on donations and they may have to install smaller solar systems depending on the success of the fundraising. Bendigo have already fully funded four other council solar installations:

  • Bendigo Archive Centre  – 30kW  (2017)
  • Bendigo Tramways Depot  – 50kW  (2017)
  • Bendigo Discovery Centre  – 11kW  (2016)
  • Bendigo Library  – 20kW  (2015)

Those wanting to help support the Bendigo Sustainability Group should call them on on 5443 5244 or click here to visit the project summary.

All donations for these projects are tax deductible through the Bendigo Sustainability Group’s Sustain Bendigo Fund. The Sustain Bendigo Fund (ABN 92 157 965 158) is endorsed by the Australian Taxation Office as an Income Tax Exempt Charity (ITEC) with Deductible Gift Recipient (DGR) status.

 

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Natural Solar – Blockchain Powered Community Solar

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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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South Australian Virtual Power Plant Launched

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Tesla’s South Australian Virtual Power Plant has begun deployment, with the first 100 Powerwalls combined with a 5kW solar array rolling out across a group of South Australian households this month. This rollout is in conjunction with the Household Storage Subsidy Scheme in South Australia.

South Australian Virtual Power Plant

South Australian Virtual Power Plant Tesla
South Australian Virtual Power Plant Tesla (source: Tesla / YouTube)

Housing SA are working with Tesla to install the distributed Powerwall tech which is going to start with a focus on public housing and will end up with arrays and Powerwalls/other batteries (read on to learn about the Household Storage Subsidy Scheme) on up to 50,000 homes. 

Another 1,000 South Australian households will have the Tesla batteries installed before July 2019, but potentially ‘in a few weeks’, according to Electrek. Lots of different figures floating around right now so we’ll update you as we hear more.

It’s actually quite similar to the 100MW / 129MWh Powerpack project in that the whole system will help stabilise the grid and provide a strong baseload of power so we don’t see the blackout issues South Australia suffered through in 2016. In this case it’s not one big project, however – many homes working together will decrease cost of electricity and ensure grid stability improves (and continues to). 

There’s also a separate scheme for other battery subsidies – underwritten by the $100 million Household Storage Subsidy Scheme. The push to help renters and low-income earners enjoy the benefits of solar has been fantastic and we’re excited to see some stats and results after the estimated 40,000 SA households receive on average $2,500 each. Please note that this particular scheme is for people who already have solar power installed and want energy storage as well and is not related to the Tesla virtual power plant.

You can watch a video Tesla released about the South Australian Virtual Power Plant – it’ll explain what the plan is and what we can expect to see next from SA and Tesla!

There’s also a video on Twitter from Nine News Adelaide where the current (Liberal) SA state government seem happy to take credit for this scheme (which was totally organised under the previous (Labor) government). Bit of an eye-roll, but then again it’s par for the course for our beloved Australian politicians.

Regardless of that, the tenant in this video had a $500+ bill for electricity every quarter, which has been reduced to $175 since having the solar system installed. So those are some fantastic numbers!

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