In Fernando de Noronha, photovoltaics, batteries, and smart grids are redesigning energy autonomy and island decarbonization.

The energy transition isn't just measured in large wind farms, continental interconnections, or utilities' business plans. Sometimes it takes the more concrete form of an island that must stop relying on seaborne fuels. This is the case of Fernando de Noronha, a Brazilian archipelago off the coast of Pernambuco, where the project Green Noronha aims to make electricity production free from fossil fuels starting from 2027, with a declared investment of R$350 million.

The initiative, announced within the framework of the COP30 of Belém and developed by neoenergy with the federal government of Brazil and the State of Pernambuco, combines PV, electrochemical storage, distributed generation, electric mobility and smart grids. It is therefore not just a technological replacement project: it is a test bed to understand how an isolated, environmentally fragile area, subjected to tourism pressure, can reorganize its energy system without reducing the security of supply.

According to the update released by Neoenergia on May 15, 2026, the first phase has been completed with 4.800 solar panels installed and the start of tests for feeding energy into the local grid. The company indicates this stage as approximately 15 percent of the total planned capacity. By the end of 2026, more than 30.000 panels, while the full completion of the generation and storage infrastructure is expected in 2027.

The technical dimension is relevant: the new Noronha Verde solar power plant is designed to reach 22 MWp of photovoltaic capacity and 49 MWh storage through BESS systems, or Battery Energy Storage Systems. For an island electrical system, storage is not an accessory: it serves to make an intermittent source programmable, to cover the evening and night hours, to stabilize frequency and voltage and to reduce the need for reserve thermal generation.

From biodiesel dependence to a renewable system

Fernando de Noronha is a particularly instructive case because it encompasses many of the tensions affecting the global energy transition. The archipelago is recognized by UNESCO as part of the Brazilian Atlantic Islands, along with the Atoll das Rocas, for the ecological value of its waters, marine species, and island habitats. This environmental significance highlights the contradiction of an electricity system historically based on local thermoelectric generation.

Company sources describe the energy consumed on the island as being produced by the Tubarão power plant, which is fueled primarily by biodiesel. The Brazilian Ministry of Mines and Energy, however, has characterized the project as a process to shut down a thermal power plant that consumes 8,6 million liters of diesel oil per yearThe difference in terminology does not change the substance of the industry: the existing model requires fuel logistics, operating costs, and sectoral subsidies that become more visible in an isolated system.

The Energy Research Company had already highlighted, as part of its studies on isolated systems, the need for alternatives for Fernando de Noronha. The island's electricity demand was expected to grow by approximately 35 percent between 2020 and 2024, a scenario that could have increased the use of liquid fuels if technically feasible renewable solutions had not been introduced. Here, the innovation is primarily systemic: it doesn't concern the individual panel, but the integration of demand forecasting, storage, grid regulation, and operational management.

The Brazilian minister Alexandre Silveira He presented the project as a paradigm shift in energy, insisting on the connection between renewable sources and system security:

Today, Brazil begins the process of shutting down a thermal power plant that consumes 8,6 million liters of diesel fuel per year. This is a paradigm shift: what for so long punished parts of the Northeast—the strong sun—is now a major source of energy for our country. And with the introduction of batteries, we gain real storage capacity. We will literally be able to 'storage the wind' of our wind farms and extend the sun's day, because the energy generated during the day can be stored and used later. This is how we ensure the security of our system. Advancing renewables is essential, but we must advance with energy security.

The move is significant because it avoids a merely symbolic interpretation of the project. In an isolated electricity system, decarbonization cannot proceed without careful planning for service continuity. Solar energy reduces exposure to fuels, but batteries become the enabling technology for transforming variable production into a manageable resource. This is a central aspect for thetechnology, but also for the industrial cost of energy and for the quality of service to users.

Batteries, smart grid and floating photovoltaics

The Noronha Verde project didn't emerge from nowhere. The Mais por Noronha program will include energy efficiency measures, distributed microgeneration, electric mobility, and meter replacement. Neoenergia claims to have consolidated the operation of a grid on the island with one hundred percent smart grid, after the complete replacement of consumption meters. In operational terms, this means being able to measure, control, and manage demand more granularly than a traditional network.

This is an important difference. In isolated areas, every kilowatt-hour not consumed or shifted in time can reduce peak generation needs, reduce storage requirements, and reduce thermal reserves. technology Digital technology applied to the grid therefore allows consumption to be treated as an active variable, not just as a demand to be satisfied. The value of batteries increases when coordinated with consistent measurements, sensors, dispatching algorithms, and regulatory calibrations.

Another interesting element is the floating photovoltaic solar power plant installed on the Açude do Xaréu, presented as the first in the archipelago. The plant has a capacity of 622 kWp and an estimated generation of 1.083 MWh per year, sufficient according to company sources to cover approximately 30 percent of the energy consumption of the Compesa on the island. The same installation should avoid 717 tons of CO2 per year.

Floating photovoltaics isn't just an engineering curiosity. On an island where space is limited and pressure on land, landscape, and biodiversity is high, placing modules on already developed water surfaces can reduce land-use conflicts. However, the technology requires specific environmental assessments because it alters the irradiance on the water, introduces maintenance constraints different from those on land, and must cope with humidity, corrosion, and wind.

The industrial supply chain involved confirms that the energy transition on islands is a field of application for transversal skills: photovoltaic design, power electronics, storage systems, network software, digital metering, and remote maintenance. Neoenergia has selected WEG as its partner for the supply of photovoltaic and storage systems and for technical and operational execution. Looking ahead, the case concerns both Research and development as well as the ability to transfer mature technologies in complex territorial conditions.

Climate finance brings networks to the forefront of COP30

Noronha Verde was presented at COP30, but the broader message emerging from Neoenergia concerns the role of electricity grids. In Belém, the company also formalized a green financing agreement. 300 million euro with the European Investment Bank for the modernization of the distribution network in Bahia. The project is intended for Neoenergia Coelba, which serves over 6 millions of customers in 415 municipalities.

This second piece broadens the interpretation of the island project. Decarbonization doesn't just progress by adding renewable capacity, but requires distribution infrastructure capable of integrating new flows, automating operations, improving reliability, and reaching low-income communities. climate finance It thus moves from the single plant to the grid, that is, to the physical and digital platform that enables electrification, distributed generation, and access to clean energy.

EIB Vice President Ambroise Fayolle linked the loan to the resilience of Brazil's infrastructure and cooperation with Latin America. Eduardo Capelastegui, CEO of Neoenergia, explained that the new project will allow the company to intensify investments in Bahia, focusing on modernizing distribution and ensuring equitable access to clean energy. These statements reflect a market trend: the transition is not just about renewable generation, but also about delivery quality, automation, data, and resilience.

Ignacio Galan, executive chairman of Iberdrola and chairman of the board of Neoenergia, framed Noronha Verde as part of the group's industrial strategy in Brazil:

The Noronha Verde project is the best example of Neoenergia and Iberdrola's commitment to the future of Brazil, which over nearly thirty years has become an increasingly essential part of our group. The initiative marks a turning point in the lives of the inhabitants of this island, part of an archipelago declared a UNESCO World Heritage Site, and makes it an international benchmark for self-sufficiency, safety, energy efficiency, and environmental protection. In short, true sustainability.

The statement is also understandable on the level of business modelsElectric utilities are progressively combining renewable generation, networks, digital services, storage, and mobility solutions. In emerging markets and peripheral regions, this integration can become a competitive advantage: simply selling energy isn't enough; it's necessary to demonstrate the ability to manage complex systems, project bankability, and dialogue with environmental and regulatory institutions.

An island model useful beyond the South American case

Fernando de Noronha's value as a laboratory depends on its replicability, but also on its limitations. Each island has different demand profiles, landscape constraints, tourist seasonality, renewable resources, and logistics costs. There is no single formula. However, the combination of solar, storage, digital metering, and demand management is one of the most coherent architectures for reducing the use of liquid fuels in non-interconnected systems.

The most delicate aspect concerns governance. The project has been authorized by the Ministry of Mines and Energy, included in the guidelines of the Isolated Systems Plan, and submitted for approval by the Pernambuco Environmental Agency, with approval from ICMBio, the federal manager of the conservation unit. In an area of ​​high natural value, success will not be measured solely by the megawatts installed, but by the ability to maintain environmental protection, electrical reliability, and control the impacts of the construction site.

Then there is a dimension of geopolitics Energy. Brazil arrives at COP30 with an electricity grid already highly renewable compared to the global average, but faces significant challenges in isolated systems, distribution networks, and access quality. Noronha Verde thus becomes a showcase project, but also a small-scale test for issues affecting many economies: how to electrify without increasing system vulnerability, how to finance smarter grids, and how to benefit even remote communities.

For the industrial sector, the message is clear: the next phase of decarbonization requires less rhetoric about single technologies and more integration capabilities. Photovoltaics, car's battery performance, smart gridEfficiency and electric mobility generate value when designed as components of a single infrastructure. Fernando de Noronha demonstrates this convergence in an extreme context: small, isolated, touristy, environmentally sensitive, and with energy costs exposed to fuel logistics.

If the target is met, the island will be able to drastically reduce its use of thermal generation by 2027 and set a useful precedent for other island systems in Latin America. But the most solid lesson is already clear: the energy transition isn't a change in source, but rather a change in architecture. In the case of Noronha, the new setup involves panels and batteries, but above all, data, automation, public-private coordination, and long-term planning. This is where the Brazil tries to transform a remote archipelago into a demonstration platform of technology applied energy.

Presentation of Neoenergia's "Noronha Verde" project

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