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PV

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The Energy Division of Acciona has developed a pioneering solution at global level in the field of hybridization between wind and photovoltaic power. It consists of covering a wind turbine tower with flexible organic panels to produce energy for the internal electricity consumption of the turbine. The innovative project will allow the study of the performance of the organic panels -an emerging photovoltaic technology- and their application to improve wind turbine efficiency.

The system has been installed in one of the turbines of the Breña Wind Farm (Albacete, Spain), which ACCIONA owns and operates. The turbine is an AW77/1500 of Nordex-Acciona Windpower technology, mounted on an 80-metre-high steel tower (hub height).

Installed on the tower are 120 solar panels facing southeast-southwest to capture the maximum of the sun’s rays throughout the day. They are distributed at eight different heights, occupying around 50 metres of the tower’s surface area. The photovoltaic modules, with an overall capacity of 9.36 kWp, are of Heliatek technology (HeliaSol 308-5986 model). They are only 1 mm thick, and each one has a surface area of 5,986 x 308 mm.

In contrast to the conventional technology used in the manufacture of photovoltaic models based on silicon, these organic panels use carbon as raw material and are characterized by their structural flexibility, which makes them adaptable to very different surfaces. Other key features are lower maintenance costs, less energy consumption during manufacture, easier logistics and the complete recycling of the materials used, although their efficiency is still below that of silicon modules.

The hybridization project in Breña means the optimization of the use of space for renewable energy production and it will enable us to test the efficiency of organic photovoltaics, a technology that we believe has one of the best improvement curves in terms of technological efficiency. That is why we have decided to pilot it”, says Belén Linares, Energy Innovation Director in Acciona.

Optimizing generation

The immediate application of the Breña project is to produce part of the energy that the internal systems of the wind turbine need. When the turbine is running, some of the energy generated is used to power the auxiliary systems. In shutdown mode, certain systems need to continue functioning so they are fed from the grid, which means that the wind turbine is registering a net consumption of energy.

The new photovoltaic system with panels on the tower will be able to cover, completely or partially, the energy demand related to the operation of the wind turbine when there is solar radiation, or even -in a possible later phase of the project- when the sun is not shining. This would be done through a battery storage system, leading to an improvement in the net production sent to the grid.

The organic panels are connected to two inverters that convert DC into AC for later connection to the grid which supplies the electrical equipment of the wind turbine.

The entire system is monitored with a view to evaluating it under real conditions, both from the point of view of energy production and degradation of the solar modules. Conceptually, it is a very innovative design in relation to previous experiences in wind power-photovoltaic hybridization, based on panels installed on the ground.

The idea is part of a wide-ranging innovation project driven by Acciona to study a number of emerging photovoltaic technologies, with the aim of pioneering the adoption of more efficient solutions in each case and consolidating its leadership as a PV developer. The company currently has over 1,200 MWp in operation or under construction in different parts of the world.

Source: Acciona

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Soltec launches the second edition of its Solteach educational programme. The leading company in the manufacture and supply of solar trackers, based in Molina de Segura (Murcia), is offering 20 spaces free of charge to engineers from all over Spain to be taken up by the best academic transcripts on conclusion of their studies and by professionals who would like to specialise in renewables in the PV energy sector.

You can register as from Wednesday, 15 May with applications accepted up until Sunday, 2 June. The course involves an intensive 80-hour course covering two weeks. During the first week the classes will be taught at the ENAE School of Business Administration (Murcia), with the second week taking place at Soltec’s offices. The training course also includes a visit to one of the company’s PV plants.

This programme seeks to give the brightest professionals the opportunity to come into contact with and receive training from the renewables company of reference in Murcia that has demonstrated the best growth in recent years and enjoys the largest market share in Latin America and the US. In addition, the trainee will benefit from training from our experienced team of engineers, with the opportunity to enhance their knowledge by taking part in our projects and thereby foster their entry into the job market.

During the training course, the teachers will assess every student and those achieving the best results will be recruited for a three-month apprenticeship. After this period, selected candidates could join the company’s staff.

Soltec is very committed to job creation and, thanks to this programme, we are looking to give an opportunity to the best professionals in the sector to receive training in renewable energy”, comments Raúl Morales, company CEO.

CLICK HERE more information and to apply for the course.

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For the past few days people from across the solar industry were gathering at Intersolar Europe. Global solar markets have ups and downs, but this year the world’s leading annual solar exhibition are filled with optimism. Speaking at European Solar Development Seminar organized by Growatt, IHS Markit Senior Analyst Susanne von Aichberger said, “From our research and analysis, we believe European solar installations are on the rise. This is good news for the industry.

Overall, European Union is set to reach EU-wide renewable energy target though some member states fail to reach their own 2020 targets, according to Susanne. Encouraged by the solid growth of European solar markets, Growatt has been increasing its investments in the region, hiring more staff and establishing branch office in Rotterdam recently.

At the seminar Growatt Co-founder and Sales Director Frank Qiao unveiled a couple of its next generation PV solutions to the audience. Its latest product developments, MIN 2.5-6k TL-XH and MAX 50-80kTL3 impressed the audience a lot. “At first glance, you’ll find our new generation product models have got appealing designs. But that’s not all. Their powerful functions will make them more attractive”, said Qiao. “MIN has OLED display and touch button and customers will have a better user experience. Its touch button has a longer lifespan and can last over three million clicks. Moreover, it’s storage ready. We are seeing the trend in solar storage and though we have already offered one-stop storage solutions for both retrofitting and newly-built PV systems, our new residential inverter includes this storage ready feature that will help reduce the cost and prepare the system owners for the future of self-consumption and storage.

For commercial and industrial rooftop solar projects, Qiao strongly recommends MAX 50-80kTL3, “At this fair we are receiving a lot of positive feedback for MAX. Many clients think MAX has got many features that will suit their projects, such as 6 MPPTs, anti-PID, AFCI etc. What makes it more special is its quad-core architecture. With dual DSP, CPLD and ARM chips, its capability has been greatly enhanced to handle functions like surge protection, I-V curve scan, fault waveform record, one-click diagnosis and so on.

Growatt has been growing steadily in Europe for the past nine years and with offices established across Europe, new models added into the product lines and more staff joining their team, is looking to grow their sales substantially in coming years.

Source: Growatt

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Special report focusing on the PV market, published as a separate issue to the April 2019 edition of FuturENERGY for special distribution at InterSolar Europe, an event celebrated from 14 to 17 May in Munich, where FuturENERGY had an active presence as media partner. This Special Report will be also distributed at the following events: MIREC Week (Mexico, 20-23/05), ENERGYEAR Andina (Colombia, 29-30/05), InterSolar Summit Spain (Spain, 18/06), ENERGYEAR Mediterránea (Spain, 3-4/07), Exposolar Colombia 2019 (Colombia, 11-13/07) y LATAM Renovables (Uruguay, 22-23/07) where FuturENERGY has an active presence as media partner too.

This special report includes the following:

COVER STORY
GROWATT. Flexible PV and energy storage solutions for all market segments

BACK COVER STORY
LONGi Solar modules demonstrate their excellent performance during demanding testing under real conditions

PV
Bifacial trackers, the real deal
New inverters for the Spanish market
Backup power for a PV plant supplying 138,000 homes in Mexico
Sertao I, a Brazilian PV plant with a Spanish stamp, heads up the efficiency rankings
Self-consumption legislation positions the consumer at the centre of the energy transition
Taking e-mobility to the next level. Charging the electric vehicle with solar energy
First PPA between residential properties, thanks to the new self-consumption legislation

DOWNLOAD COMPLETE REPORT

The PV installations in Brazil increased drastically in recent years with 371.9 MW capacity added in 2018, which nearly triples the installations for the previous year. The rooftop sector accounts for a significant share of the installed PV systems. The strong growth has contributed to increasing investments by solar companies from home and abroad.

Growatt, a leading Chinese inverter manufacturer has set up its Brazil Service Center in Mogi das Cruzes to expand its global presence. “Growatt has shipped over 20,000 inverter solutions to Brazil since entering the market in 2016. The business has been growing at a fast pace and now it’s time for localization after three years of development.” said Lisa Zhang, Growatt marketing director. Its service center is staffed with four local service engineers at the moment. “With our service center established in Brazil, we can provide faster and better service for local customers.

Growatt focuses on providing residential, commercial and industrial inverter solutions. Its 15-22k three-phase inverters and 8-10.5k single-phase inverters have been quite a success in the market. “Our inverters are becoming increasingly popular in Brazil. And we are launching our next generation residential inverter MIN2.5-6kTL-X for the Brazilian market very soon. This is the powerful future solution for residential PV system.

Many customers are attracted by its design at first glance. It has OLED display and touch button, which can last over three million clicks. It’s about 35% lighter than common inverters of previous generation because we use light and flame-retardant aerospace grade materials. It has powerful smart functions as well. By connecting it to our Online Smart Service(OSS) platform, customers can monitor, manage and maintain installed systems remotely. It saves time and money.” This next generation residential inverter is expected to gain its INMETRO certification in June according to Zhang.

Zhang has high expectations for this coming new inverter model and business growth this year. “Brazil has great solar potential and the market will continue to grow. We will continue to increase our investments and improve our service in Brazil and South America. With our leading advantages in residential and C&I inverter solutions, our goal is to take 20% market share of the rooftop sector in Brazil.

Source: Growatt

As the urgency to take bold climate action grows, new analysis by the International Renewable Energy Agency (IRENA) finds that scaling-up renewable energy combined with electrification could deliver more than three quarters of the energy-related emission reductions needed to meet global climate goals. According to the latest edition of IRENA’s Global Energy Transformation: A Roadmap to 2050, launched at the Berlin Energy Transition Dialogue, pathways to meet 86 per cent of global power demand with renewable energy exist. Electricity would cover half of the global final energy mix. Global power supply would more than double over this period, with the bulk of it generated from renewable energy, mostly solar PV and wind.

The race to secure a climate safe future has entered a decisive phase,” said IRENA Director-General Francesco La Camera. “Renewable energy is the most effective and readily-available solution for reversing the trend of rising CO2 emissions. A combination of renewable energy with a deeper electrification can achieve 75 per cent of the energy-related emissions reduction needed.

An accelerated energy transition in line with the Roadmap 2050 would also save the global economy up to USD 160 trillion cumulatively over the next 30 years in avoided health costs, energy subsidies and climate damages. Every dollar spent on energy transition would pay off up to seven times. The global economy would grow by 2.5 per cent in 2050. However, climate damages can lead to significant socio-economic losses.

The shift towards renewables makes economic sense,” added Mr. La Camera. “By mid-century, the global economy would be larger, and jobs created in the energy sector would boost global employment by 0.2 per cent. Policies to promote a just, fair and inclusive transition could maximise the benefits for different countries, regions and communities. This would also accelerate the achievement of affordable and universal energy access. The global energy transformation goes beyond a transformation of the energy sector. It is a transformation of our economies and societies.

But action is lagging, the report warns. While energy-related CO2 emissions continued to grow by over 1 per cent annually on average in the last five years, emissions would need to decline by 70 per cent below their current level by 2050 to meet global climate goals. This calls for a significant increase in national ambition and more aggressive renewable energy and climate targets.

IRENA’s roadmap recommends that national policy should focus on zero-carbon long-term strategies. It also highlights the need to boost and harness systemic innovation. This includes fostering smarter energy systems through digitalisation as well as the coupling of end-use sectors, particularly transport, and heating and cooling, via greater electrification, promoting decentralisation and designing flexible power grids.

The energy transformation is gaining momentum, but it must accelerate even faster,” concluded Mr. La Camera. “The UN’s 2030 Sustainable Development Agenda and the review of national climate pledges under the Paris Agreement are milestones for raising the level of ambition. Urgent action on the ground at all levels is vital, in particular unlocking the investments needed to further strengthen the momentum of this energy transformation. Speed and forward-looking leadership will be critical – the world in 2050 depends on the energy decisions we take today.

Source: IRENA

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Chinese state-owned developer CECEP has completed a 70 MW floating solar project – the largest in the world – at a former coal-mining area of Anhui Province, China, in collaboration with French floating solar specialist Ciel & Terre.

The project, spread across 13 separate islets on an area of 140 hectares, was completed in late 2018, with grid-connection, tests and commissioning carried out this month at the project site in the Lianghuai mining subsidence area, Yongqiao District, Suzhou City.

EPC services were provided by China Energy Conservation Solar Technology and the China Energy Engineering Group Shanxi Electric Power Design Institute. A brand new 18 km 110 V overhead line was also built for the grid connection of the plant, which is expected to generate up to 77,693MWh of electricity in its first year, equivalent to the power consumption of nearly 21,000 households.

While the complete facility in Anhui is said to currently be the largest floating PV plant on the same reservoir in the world, nearby, China-based firm Three Gorges New Energy has already partially connected a 150 MW floating PV project to the grid, which is likely to become the largest plant globally once fully commissioned.

Equipment

The CECEP system was built using Ciel & Terre’s Hydrelio floats, which are locally produced to minimize emissions, optimise logistics costs and offer local employment.

The project uses monocrystalline modules from Chinese manufacturer LONGi Solar, as confirmed by a C&T spokesperson to PV Tech. Central inverters have also been put on stilt platforms on the shoreline of the quarry lake so as not to interfere with neighbouring farm activity. Concrete poles support the electrical installation and 1,500 helical anchors were used for the project and buried at an 8-15 metre-depth to match the water body.

Source: LONGi Solar

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The second edition of the event ‘Solar PV Plants in Spain: development, financing and the energy future’, organised by the Spanish PV Industry Association (UNEF) and single-axis solar tracker manufacturer, Soltec. The seminar took place last 20 February at the Hotel VP Design Plaza in Madrid.

It was inaugurated by Jesús Ferrero, deputy director for Renewable Energy and comprised four round table discussions which addressed the entire PV plant development process. They also discussed questions about the energy model and technological innovations.

The PV industry is being called on to be the leading technology in order to achieve 74% from renewables from now to 2030. This commitment will not be a problem as the sector has already demonstrated that it is ready to invest”, affirmed José Donoso, the managing director of UNEF, in his opening speech.

Taking part were leading companies such as Iberdrola, Enel Green Power, EDP Renewables and Naturgy that offered the perspective of energy developers in Spain.
Bifacial technology dominated the debate during the technological round table with Canadian Solar, Power Electronics, Jinko Solar and Soltec.

The seminar concluded with a round table discussion on the financing of solar projects given by certification company DNV GL together with representatives from PwC, Bankia and Sabadell.
Following the successful calls for entries in 2018 and 2019, UNEF and Soltec will undoubtedly promote another event geared towards solar power companies that are interested in developing projects in Spain, as well as fostering relationships between Spanish companies in the sector”, confirmed Raúl Morales, CEO of Soltec.

The Spanish PV Industry Association (UNEF) is the country’s solar PV power sector association. Comprising over 300 companies, entities and groups covering the entire value chain of the technology, it represents over 85% of the sector’s activity in Spain and in practice brings together producers, installers, engineering firms, manufacturers of primary materials, modules and components, distributors and consultants. UNEF moreover holds the presidency of and is co-secretary of FOTOPLAT, the Spanish PV technological platform which brings together universities, research centres and companies of reference in PV R&D in Spain.

Soltec’s global operations and a workforce of 750 people combine experience and innovation. The company has manufacturing centres in Argentina, Brazil, China and Spain; and offices in Australia, Chile, Denmark, the US, India, Israel, Italy, Mexico and Peru. Its solar tracking units are designed and tested to withstand extreme conditions, thereby making them the perfect solution for any type of climate. The single-axis PV trackers from Soltec are self-powering and require no additional PV module or grid connection.

Soltec’s SF7 single-axis tracker enables greater efficiency with lower installation costs. The SF7 solar tracker is the innovation of a company with 15 years of history as a PV specialist. Firmly committed to renewable energies and to the environment, Soltec supports product standardisation and the success of its clients.

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The potential for fires in buildings related to PV installations is one of the most important concerns of regulators, installers and users when considering whether or not to install PV energy on either residential or commercial premises. The DC arc-fault circuit protection is the most important defense against fires caused by arcing faults inherent to PV systems. The GoodWe C&I inverters incorporate DC arc-fault circuit protections in accordance with international standards.

GoodWe is pleased to share to its partners and friends that it has obtained a Letter of Attestation from the Canadian Standards Association Group (CSA Group) stating that the GoodWe inverters of the models GW50K-MT, GW60K-MT , GW50KN-MT , GW60KN-MT, GW70KHV-MT, GW80KHV-MT, GW50KBF-MT, GW60KBF-MT, GW80KBF-MT, GW80K-MT and GW80KB-MT, after testing, comply with the UL1699B standard (Issue Number 2, January 14, 2013) – Outline of Investigation for Photovoltaic (PV) DC Arc-Fault Circuit Protection. This standard comprises the following tests: Humidity Test, Voltage Surge Test, Environmental Test Sequence, Unwanted Tripping Test, Operation Inhibition Tests, the Masking the Signal to Operate Test as well as the Line Impedance Test.

Meeting the regulations in place in the North American markets and particularly those related to DC Arc-Fault Circuit Protection is one of the highest priorities of GoodWe. This Letter of Attestation constitutes one step forward in the direction of providing all the necessary comfort and peace of mind to the users as well as the authorities regulating the PV market across the Commercial & Industrial Photovoltaic Segments of that region.

2018 was a year of commercial success and expansion across the world for the GoodWe C&I inverters, particularly those of the MT family. Over the past months, different versions and qualities of the GoodWe MT inverters have been selected for industrial projects in India and Brazil, involving in many cases Western EPCs that have opted for GoodWe for their great value.

The inverters of the MT family tested by the CSA Group are a ready and safe supply option for the booming C&I North American PV markets and GoodWe trusts that this Letter of Attestation will contribute to raise their commercial profile and highlight their viability, allowing for their participation in regional C&I projects.

Source: Goodwe

Fuentes: Elaborado por AleaSoft con datos de REE y del Ministerio para la Transición Ecológica / Source: Prepared by AleaSoft using data from REE and the Ministry for the Ecological Transition

AleaSoft analyses the content of the Integrated National Energy and Climate Plan and its proposals for the electricity sector, where the role that the consultancy foresees for hydrogen technologies is lacking.

The Integrated National Energy and Climate Plan (NECP) is a broad and cross-cutting document that addresses the goal of reducing greenhouse gas (GHG) emission from many angles, from transportation and electricity generation, to employment and R&D. The objective of the Plan is to achieve a 20% reduction in emissions in 2030 compared to the levels recorded in 1990. This means reducing the current emission levels by more than 30%. The draft lays the foundations to advance in the energy transition and achieve the ultimate goal of totally decarbonising the economy and converting Spain into a carbon neutral country by 2050.

In the energy transition and the reduction of polluting gas emissions, electricity generation will have a central role. The electricity generation sector is one of the most responsible for the emission of CO2 and other greenhouse gases, but it is also one of the sectors with the greatest power to reduce emissions thanks to the production of electricity from renewable energy sources.

The objective of the Plan is to achieve, in the year 2030, a penetration of renewable energy sources in the final energy consumption of at least 35%. Specifically for the electricity system, the objective is the generation of at least 70% of the electricity from renewable sources by 2030 and with the final goal of 100% by 2050. To do this, the NECP proposes to install 69 GW of renewable capacity before 2030, and reduce conventional generation by 15 GW.

The star technology in this renewable revolution will be the solar energy with new 37 GW, of which 32 GW will be of photovoltaic technology and 5 GW of solar thermal. This new capacity to be installed represents an increase of 530% compared to the current power. The second potential technology to be installed before 2030 is the wind energy with new 27 GW and a capacity growth of 114%. And behind the solar and the wind energy, with much less new capacity are the rest of renewable technologies that will add another 5 GW.

On the side of the reduction of conventional generation, the technology that is intended to be eliminated more quickly is coal. In 2030, it is expected to have removed at least 8.7 GW from the current 10 GW, but with the possibility of closing 100% of the power plants if security of supply allows it. The Plan estimates that coal thermal power stations will no longer be competitive by 2030 if the price of CO2 emission rights reaches 35 €/t. Right now, the price of emissions is around 23 €/t after it tripled in 2018.

The other conventional technology condemned to disappear according to the draft is the nuclear. By 2030 it is expected to halve the installed capacity by closing 4 GW. On a smaller scale, the other technologies to be reduced are cogeneration, generation with waste and fuel-gas.

The willingness of the Plan to withdraw up to 2 GW of cogeneration is somehow surprising. The employers of the sector have already shown their disagreement. Cogeneration is one of the most efficient ways to produce heat for the industry. Producing all that thermal energy directly using electricity would be a disproportionate expense for those industries. According to AleaSoft, the best strategy to reduce emissions in industries that require heat is cogeneration with renewable gas or even with hydrogen, which, according to the consultancy, is the fuel of the future and, in addition, does not produce emissions.

As highlighted by AleaSoft, the renewable transition proposal of the Plan shows very explicitly the need that renewable energies continue to have a backup technology due to its intermittent nature: to remove 15 GW of conventional capacity it is necessary to install 69 GW of renewable capacity . The draft is committed to maintaining gas as a backup technology, maintaining the installed capacity of this technology at least until 2030. But the support for intermittent renewable production is also addressed from two other angles: storage and interconnections.

In terms of energy storage, the Plan will promote the pumped storage hydropower plants with new 3.5 GW that allow the management of renewable production and, additionally, can support the regulation of watersheds in conditions of extreme phenomena. The installation of up to 2.5 GW of batteries is also contemplated gradually as the technology matures.

In AleaSoft the mention of hydrogen is lacking as a tool for storing large amounts of energy over long periods of time, being able to counteract the seasonality of a large part of the renewable production. In the Plan, hydrogen is only mentioned as an alternative fuel for transportation.

On the interconnection side, the Plan contemplates the already planned projects to increase interconnections with France up to 8000 MW and with Portugal up to 3000 MW. Even with these increases in exchange capacity, Spain will not achieve a 10% interconnection with respect to its total installed capacity and will continue far from the minimum target of 15% of the European Union.

The draft Plan also takes into account the increase in energy efficiency as an essential tool for the energy transition.

Other important aspects that the draft also takes into account are self-consumption and, in general, a more active role for the consumer. With the approval of the Plan, the demand aggregator will be created as the new subject of the electricity sector to boost the participation of demand in the ancillary services. It is promoted that the aggregation of demand allows a greater participation of distributed generation and self-consumption in the imbalance and ancillary markets.

Source: AleaSoft Energy Forecasting

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