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Two sides to the same panel: Lightsource’s bifacial technology

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Bifacial (literally ‘two faced’) solar panel technology has become a hot topic across our sector in recent years due to its potential to out-perform mono-facials.  In 2019, 3% of all solar modules sold were bifacial, and this figure is predicted to climb to 10-15% this year, as we see more projects getting the green light globally.

More powerful from every angle

The key strength of bifacial solar panels is in the name – by capturing sunlight on both faces of the panel, the efficiency of energy transfer is increased by around 14%, producing more energy from the same amount of space.

In regions like Australia and the USA, where cost of labour is very expensive, this uplift in yield and increased efficiency has significant benefits to the internal rate of if return (IRR)  of projects, creating more financially viable opportunities for solar.

Case Study: Wellington Solar Farm, NSW, Australia 

We are currently building one of the first (and largest) projects in Australia to deploy bifacial panels at scale. Wellington Solar Farm is a 200MW utility scale solar plant located near Wellington, NSW, and when completed will feature:

  • 500,714 Canadian Solar Bi-HiKu panels
  • 435,000MWh of clean, renewable electricity per year – enough to power 72,500 homes
  • 350,000 tonnes of CO2 emissions displaced- equivalent to taking 121,580 cars off the roads.

Durable, with a longer lifetime

According to a study by Wood Mackenzie Power & Renewables, there’s around 5.4GW of bifacial solar capacity operating globally, predominantly in Asia, with that number set to rise tenfold and achieve equal distribution across Asia and North America in the next five years.

This popularity with developers is not just due to increases in efficiency, but also durability. Bifacial modules have glass on both sides, which increases the energy production but also extends the lifetime of the product when compared to its mono-facial counterpart.

Heavyweight champions

These modules are also often up to 30% heavier than regular mono-facial panels, as they’re built to withstand significant weather conditions. The glass on a bifacial module can handle 2.5cm hail (typically the largest it will get), and many manufacturers use glass that’s 2mm thick, as the flexibility reduces the number of micro-cracks, and allows the glass to bend, rather than break. As a result, bifacial modules can be used in a wide range of locations where solar would not have previously been considered a good option.

The extra weight increases durability of the panels, cutting the frequency of part replacement, saving time and money. Due to this, the manufacturers guarantee includes a lower degradation rate (the decline in output that all solar panels experience over time) – another significant gain in IRR and project viability.

But it’s not without its challenges

The panels do not stand alone, they fit within the framework of a project as a whole, and so many elements of site design have to be adjusted to fit.

Investor assurance is key

Another challenge is the bankability of the modules with financial institutions. To a point, bifacial technology is still ‘new’ and can be interpreted as a ‘risky’ investment. Early adopters, like ourselves are overcoming this hurdle by strengthening R&D and demonstrating rigorous testing.

As there are no international standards yet for bifacial panels, testing products consistently can be difficult. To overcome this, we’ve been working closely with module providers on pre-shipment testing . We’ve built healthy relationships with the top 10 global solar manufacturers, which has allowed us to place significant orders, currently earmarked for projects across Europe, the US and Australia.

What’s next?

While bifacial panels are in many ways superior to mono-facial panels, there is still potential to improve performance further. Without getting into deep technical specifics, the next step would be to upgrade the type of silicon wafer used in the cells of the panels, from traditional P-type to the more expensive but more efficient N-type. We are currently trialling N-type cells on one of our projects in the UK and look forward to seeing the results.

 

 

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Solar Panels

Amea Power, 50 mw solar power plant project in togo temperature energy project

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Officially named Sheikh Mohamed Bin Zayed, after His Highness Sheikh Mohamed bin Zayed Al Nahyan, Crown Prince of Abu Dhabi, the PV plant has been delivered in record time, with just 18 months between the signing of the Power Purchase Agreement (PPA) and commencement of commercial operations.

Built by AMEA Togo Solar, a subsidiary of AMEA Power, the plant, located 267km from Togo’s capital, Lomé, has a planned production of nearly 90,255 MWh of power per year. This will supply power to approximately 158,333 Togolese households per year, with 9% of energy generation feeding into the local Blitta distribution network, enough to meet demand in the area.

The power plant will be operated for 25 years by AMEA Togo Solar, saving more than 1 million tonnes of CO2 emissions over the course of its life. The plant is instrumental in supporting Togo’s ambitious US$8 billion 2018 – 2022 National Development Plan (NDP), which aims to achieve universal access to electricity by 2030 and to increase the share of renewables in the energy mix to 50%.

Hussain Al Nowais, Chairman of AMEA Power, commented: “We are delighted to launch the Sheikh Mohamed Bin Zayed PV plant and extend our congratulations to all those involved. Togo was an obvious choice for AMEA Power’s first operational power plant in Africa, with it being an important trade hub in West Africa, along with the government’s progressive regulatory framework for renewable energy projects, which was key in ensuring the completion of the project in a fast, efficient, and responsible manner. This is an incredibly exciting time for AMEA Power, and we are on track to becoming one of the fastest-growing renewable energy IPPs, with several additional projects set to achieve financial close in 2021.”

His Excellency Faure Gnassingbé, President of Togo, and AMEA Power’s Chairman, Hussain Al Nowais, attended an inauguration ceremony today [22nd June 2021] at the power plant site. Other high-profile attendees included the Prime Minister of Togo, Victoire Tomegah Dogbé; Minister Delegate to the President of the Republic, in charge of Energy and Mines in Togo, Mila Aziable; Director of Compagnie Energie Electrique du Togo (CEET), Laré Santiégou; Senior Advisor to the President of Togo, Shegun Adjadi Bakari; President of the West African Development Bank, Serge Ekué; and the Deputy Director General of the Abu Dhabi Fund for Development (ADFD), Khalifa Al Qubaisi.

Mila Aziable, Minister Delegate to the President of the Republic, in charge of Energy and Mines in Togo, commented:“The development of the Sheikh Mohamed Bin Zayed PV plant is an excellent example of a successful Public-Private Partnership in Africa, with AMEA Power utilising Togo’s committed implementation unit and favourable investment climate to pre-fund a large-scale renewable energy project on balance sheet. We are delighted to have worked with a team of such highly-skilled professionals with demonstrated know-how in the energy sector.”

The project was supported with concessional loans from the West African Development Bank (BOAD) and the Abu Dhabi Fund for Development (ADFD). It was pre-funded on balance sheet, and then refinanced, a unique model for a large-scale IPP project in Africa. This is indicative of the level of project certainty created by the NDP’s regulatory framework, which provided AMEA Power with the necessary level of assurance and comfort to embark on the project’s execution well in advance of the financing being arranged.

Community impact

The construction of the power plant helped to create local employment opportunities, with 80% of plant workers hailing directly from Togo.

AMEA Power also invested directly in community initiatives in Blitta, which positively impacted more than 100,000 people, by constructing (and providing equipment for) one new clinic and three new school buildings; renovating four schools; providing school supplies for 1,400 students; and installing a water pump at a local primary school. AMEA Power will provide electrification via solar power to the schools and clinic.

Moreover, AMEA Power’s internship programme brought 36 engineering students from various technical institutions in Togo to the Sheikh Mohamed Bin Zayed PV plant, preparing them for employment by giving them the opportunity to apply their theoretical knowledge and develop their practical skills in renewable energies.

In response to COVID-19, AMEA Power distributed essential food and hygiene products to 8,500 families in nine countries across Africa, including 1,100 families in Togo. AMEA Power also distributed food and hygiene products to a further 8,000 families during Ramadan this year, which reached 1,100 families in Togo.

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Truck trailers with solar panels can save fuel

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In a research partnership, Scania will develop a solar cell clad trailer to power a plug-in hybrid truck. Initial tests indicate possible fuel savings of 5–10 percent in Sweden and twice that amount in sun-rich southern Spain.

“Solar cells have previously been employed on boats and caravans but then only to power auxiliaries such as refrigerators and cookers and not the actual powertrain,” says Eric Falkgrim, Technology Leader in Vehicle Design at Scania R&D.

An 18-metre long solar cell clad trailer

The truck will be operated in daily transport assignments by the Swedish haulier Ernst Express, which also collaborated with Scania in trials of the world’s first electric road with overhead catenary lines. Ernst Express will operate an 18-metre long solar cell clad trailer with a total area along the sides and roof of 140 square metres. In total, the solar panels are expected in Sweden to annually generate 14,000 kWh.

The research project will also examine whether the trailer can feed electricity into the grid when the batteries are fully charged and the truck is parked, for example, over weekends.

Fuel savings up to 10 percent in Sweden

In a pre-study, operations in mid-Sweden were simulated reaching a potential fuel saving of 5–10 percent. In Sweden, there is enough sunlight from spring to autumn to generate energy and although the sun is weak except during summer, there are more  hours of sunlight. During the rest of the year , there is insufficient sun in Sweden. By contrast, southern Spain has 80 percent more hours of sunlight.

 The project is publicly funded the Swedish government’s innovation agency Vinnova and aside from Scania and Ernst Express also engages Midsummer that manufactures the solar panels, Uppsala University, which conducts advanced research on more efficient solar cells, and the Dalakraft energy company.

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FRV secures Green Finance for Sebastopol Solar Farm, NSW, Australia

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Fotowatio Renewable Ventures (FRV), part of Abdul Latif Jameel Energy and a leading global developer of renewable energy projects, closed the financing agreement for the 90 MWac Sebastopol Solar Farm – its third major project in New South Wales.

 The funding is entirely provided by ING in the form of a Green Finance compliant with the Loan Market Association (LMA) Green Loan Principles and the Green Projects requirements.

FRV signed a Power Purchase Agreement (PPA) for the project with Snowy Hydro in March 2020.  In August FRV successfully completed the construction of the 69.75 MWac New South Wales Goonumbla Solar Farm, which also has a PPA awarded to FRV as part of the Snowy Hydro Renewable Energy Procurement Program in 2018.

Located 16 km south of Temora, approximately 440 km south-west of Sydney, New South Wales, the plant will connect to the national grid and generate enough power to supply over 40,000 Australian households and avoid the emission of approximately 77,600 tons of CO2 annually.  This is the equivalent of removing some 27,700 cars from the roads each year.

Sebastopol Solar Farm will contribute to the economic development of the local area.  FRV anticipate the creation of up to 150 jobs during the construction phase, and 2-3 operational staff for the life of the project.  Site maintenance contracts will also be required and will be met by local businesses.

 FRV has developed and secured PPA for a total of seven solar projects in Australia, operating and committed with an accumulated investment of over US$ 700 million since 2012: Royalla (20 MWac) in the Australian Capital Territory, Clare (100 MWac) and Lilyvale (100 MWac) in Queensland, Moree (56 MWac), Goonumbla (69.75 MWac) and Sebastopol (90 MWac) in New South Wales and Winton (85 MWac) in Victoria.

Carlo Frigerio, Managing Director of FRV in Australia, said: “This is our second financial close this year following Winton solar Farm in Victoria and I am delighted to see another FRV project starting construction in New South Wales after our successful delivery of the Goonumbla Solar Farm few months ago”.  Mr Frigerio also added “We are also very glad to receive funding for the Project from ING in the form of a Green Finance confirming FRV’s commitment to support environmentally sustainable economic activity in the regions where we operate”.

Fady Jameel, Deputy President and Vice Chairman of Abdul Latif Jameel, said: “Through FRV, our flagship renewables business, Abdul Latif Jameel Energy furthers its commitment to delivering clean energy solutions in key global markets.  We are grateful for our partnership with ING, securing a groundbreaking Green Finance for the Sebastopol Solar Farm. Together, we are encouraging responsible and sustainable infrastructure development in Australia’s renewable energy sector.”

Gordon Wymer, Chief Commercial Officer of Snowy Hydro, said “We are extremely pleased that FRV has progressed this project through the financial close milestone”. Mr. Wymer also added “Snowy Hydro continues to build its renewable energy portfolio, enabling new wind and solar projects to be built. This is providing much needed competition in the C&I market as well as a great outcome for our environment”.

Gido van Graas, Managing Director & Head of Energy of ING Australia, said: Following the recent financing for the Winton and Goonumbla Solar Farms this is our third transaction with FRV in Australia and marks another milestone for our Energy team in Sydney who also acted as Green Structuring Advisor.  By using a green loan to fund the construction of the Sebastopol Solar Farm is a clear testament of FRVs commitment to a sustainable future and contributes towards ING’s ambition to align our lending portfolio with the Paris Agreement goals”.

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