How excess clean energy has tested the electricity grid in Spain

This Holy Week has achieved a historical milestone in the energy sector in Spain: for the first time 100% could be covered of the electrical demand with renewables. However, behind this success there is a shadow that does not benefit the electricity grid: the Curtailment. Short. The phenomenon Curtailmentor “renewable cut”, occurs when there is an excess of electric production. Then, the system operator – in this case, the Spanish electricity grid – is forced to temporarily reduce or stop wind turbines or solar panels to maintain the stability of the network, According to EDP Energy. The root of the problem. Although there are optimal wind or sun, the REE must stop the renewable generation for two reasons. On the one hand, there may be excess production over hours that do not coincide with consumption peaks. On the other, As was already being discussedan energy inequality persists in the country: the “emptied Spain” produces and is far from the large consumption centers. As has detailed At eldiario.es, electrical networks were not designed to transport current volumes, creating bottlenecks that force production to stop. The waste. He Curtailment It is causing consequences that alert experts. According to Aurora Energy Researchlast year in Spain, 1.7 Renewable Energy TWH was wasted, sufficient to supply 600,000 homes for a full year. The worrying, as the study has indicated, this figure represents 13% more than in 2023, confirming an upward trend that, if not corrected, can be intensified in the coming years. An opening of solutions. Despite the cut there are different devices to be able to keep the network stable. First, continue building more large -scale storage systems through batteries either reversible hydroelectric plantsallowing to save the surplus to release it when necessary. Another system comes with an innovation of fingering by implementing Intelligent networks that combine IoT sensors with AI algorithms, capable of predicting excess production. These systems, complemented with digital twins that virtually replicate the behavior of the network, allow to optimize energy flows and reduce up to 30% spills, According to data collected by strategic energy. Crossing borders. Looking towards the neighbors, interconnections could be improved with France and Portugal to channel surpluses. As has pointed out In the school environment, these connections will allow the export of energy to be planned in advance, although currently its capacity remains limited. Forecasts Curtailment represents one of the greatest practical challenges of the Spanish energy transition. While Spain continues to beat records in renewable installation, the ability to take advantage of every kilowatt will make the difference between a truly sustainable energy model and another that, paradoxically, continues to waste part of its green potential. Image | Joan Grifols and Pexels Xataka | The production of renewables in Europe is so strong that it is forcing nuclear power plants to work

The cheaper, the more the electric grid collapses worldwide

In 1812, a German named Frederick Winsor founded the Light and Coke Company in London. His proposal was to supply gas to multiple homes centrally, instead that each one had to buy and burn their own coal or their own firewood. Thus, public services were born, which today face its greatest transformation in two centuries By effect of renewables. The electricity grid According to the International Energy Agency (IEA), today there are 80 million kilometers of electrical networks in the world. By 2040, 50 million additional kilometers will be needed, in addition to the urgent need to modernize another 30 million kilometers of the current network. The challenge is not only quantity: it is not enough to multiply the electric laying. Wind energy, and especially solar energy, have introduced the need to digitize all infrastructure, Insert control systems and improve your flexibility to handle the intermittent nature of renewables. The paradox of solar energy. The more accessible the photovoltaic panels become, the more users choose to partially abandon the electricity network. This increases the cost for those who stay, and puts in check the stability of the system, pending a deep modernization. In rich and sunny regions Like California either Australiaself -consumption has been about to collapse the network in days of abundant solar generation. But you don’t have to go to the most developed places in the world to find these types of problems. A report in The Economist Review three unsuspected cases: Pakistan, the third largest importer of Chinese solar panels (according to data from 2023), is seeing how companies, farmers and large consumers install photovoltaic systems to self -abuse and stop paying very expensive electrical invoices. Still dependent on old coal plants, the price of electricity in Pakistan is very high, so users with resources have preferred to invest in solar energy South Africa lives another variant of this paradox. Before the mass cuts of the state company Eskom (which are called ‘Load Shedding’), many users install solar panels and batteries to protect themselves from interruptions. The South African municipalities that buy the energy at Eskom and then resell them have to pay increasing invoices to the company and, in turn, charge less to those who migrate to self -consumption. This has generated indebtedness with ESKOM of around 1.2% of the country’s GDP. Solar adoption relieves the dependence of the network, but in turn it is a threat to the income that maintains the infrastructure In Lebanon, the state company only provides electricity a couple of hours a day since 2019. As a direct consequence of this, the photovoltaic facilities on the roofs have multiplied, from 100 to 1,300 megawatts in just three years. This situation, despite partially solving the shortage, is resulting in a fish that bites the tail due to the lack of stability and investments in the network An open gap. As private solar facilities proliferate, fixed network costs (lines, substations …) fall on a smaller user base connected. Those who run out of resources to put panels, generally the poorest, have to pay even higher rates To cover all system expenses, which normally seeks profitability. The numbers in Europe. Europe is at the head of the world in emission and electrification objectives, but this has important economic implications. According to a Bruegel reportthey will need between 65,000 and 100,000 million euros per year to modernize and expand the European electrical infrastructure, especially in distribution networks. At the same time, the European Union promotes solar self -consumption and does not always establish sustainable tarification mechanisms for the network. If many homes are drastically or reduced their consumption of the electricity grid, the user base on which the cost of investment in infrastructure is reduced, the fixed term of the invoice is increased and duttering more consumers, who invest in more solar panels. Cross -border connections. Solar energy itself does not cause instant blackouts, but unbalanced the financial and operational structure of the electricity grid, which has fixed maintenance costs. And he does it for several reasons: the decreasing base of users, the mismatches of supply and demand due to the intermission of renewables and the use of the network as a minimum cost support. In addition to batteries and Pumping plants to stabilize the networkinternational projects such as the hypothetical are needed Transatlantic cable between America and Europe To share renewable surpluses between continents and soften demand peaks, but their development is complex, controversial and quite expensive. Image | US Department of Energy In Xataka | The next drought will be electricity: the electricity grid “is running out of transformers” for the demand for AI

an electrical grid that works 24/7 with solar energy

We tend to assume that solar energy is intermittent, but there is nothing that petrodollars can’t solve. And Abu Dhabi is precisely the first city in the world to announce a large-scale solar plant designed to operate 24 hours a day, 7 days a week. The news. The pulse of the United Arab Emirates does not tremble investing what is harvested with its fossil fuels in renewable projects that will one day replace them. Its capital, Abu Dhabi, has just signed for 6 billion dollars the installation of a photovoltaic plant on a public service scale with a particularity. According to Masdar, the developer, it will be the first solar plant designed to supply clean energy 24/7 thanks to the combination of the Emirati sun, millions of solar panels and a huge storage system. The details. The huge project, participated by the state company EWEC (Emirates Water and Electricity Company), will combine a 5.2 GW photovoltaic plant with a 19 GWh battery storage system. Once connected, the plant will not only power millions of homes, but will be responsible for up to 1 GW of the grid’s base load, the minimum power required by the electrical grid that is traditionally covered by more stable thermal sources, such as coal. and gas. Alliance with China. As is happening in neighboring Saudi Arabia, the Emirates is strengthening ties with Chinese companies for this renewable drive. JA Solar and Jinko Solar They will supply 2.6 GW of solar panels each based on TopCon technology, which has higher efficiency and lower degradation rate. For its part, CATL will supply the batteries directly integrated into its HAVE storage systemwhich promises zero degradation in five years and a capacity of 6.25 MWh per container. POWERCHINA and the Indian multinational Larsen & Toubro will be in charge of the design and construction of the plant, which will generate 10,000 jobs. Green Emirates. The Abu Dhabi project, whose roadmap marks the start of operations in 2027, is framed in a long-term plan of the United Arab Emirates: the Energy Strategy 2050. The country hosted the COP28 summit, in which United Nations countries emphasized the urgency of installing more sustainable energy solutions. Sultan al Jaber, who chaired the summit, is also Minister of Industry and Advanced Technology of the United Arab Emirates and president of Masdar, promoter of the solar plant. “For the first time, we will transform renewable energy into 1GW of reliable baseload power, at unprecedented scale,” highlighted al Jaber in a statement. In Xataka | More billionaires, less oil: Abu Dhabi’s plan to become the new Singapore

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