INA, the Croatian oil company, has successfully sold its solar power Guarantees of Origin (GOs) at a price of €0.22 per GO in a recent auction organized by the Croatian Power Exchange (CROPEX). The sale, which took place on October 29, 2025, is a clear indicator of the growing market for certified renewable energy and INA’s strategic pivot towards sustainable power generation.
INA’s Solar power guarantees: INA-Solar-PV-1
The solar power guarantees, specifically labeled INA-Solar-PV-1, are tied to the electricity produced by INA’s solar power plants in Croatia. In this latest auction for the first quarter of 2025, INA sold a total of 276 GOs, equivalent to 276 MWh of solar-generated electricity.
Each Guarantee of Origin is an electronic certificate that represents 1 MWh of electricity produced from renewable sources. These certificates are crucial as they provide a transparent and verifiable way to track green energy from the producer to the final consumer. The sale of these GOs is a cornerstone of INA’s strategy to not only generate clean energy but also to support a transparent and robust renewable energy market. The electricity itself is generated through a complex solar panel manufacturing process that turns raw materials into high-efficiency power sources.
CROPEX: A Hub for Renewable Energy Trading with Solar power guarantees
The CROPEX auction was not limited to INA’s solar power. It was a significant market event where a total of 205,606 GOs were sold, with certificates originating from wind, biogas, and solar power sources from various producers. While wind power GOs dominated the traded volume, INA’s successful solar auction highlights the increasing diversity of Croatia’s renewable energy market.
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CROPEX’s platform provides the transparency and efficiency needed to make it a vital component of the national energy strategy. It allows companies like INA to monetize their investment in green energy, creating an additional revenue stream that can be reinvested into future projects. The funds raised will likely support INA’s long-term goal of expanding its renewable portfolio, potentially helping to finance new facilities and lower the overall solar panel manufacturing plant cost breakdown for future developments.
The Broader Impact of Renewable Energy Solar power guarantees
The sale of renewable energy guarantees is a key mechanism for European countries striving to meet ambitious climate and energy goals. But what does an auction in Croatia mean for a homeowner or tenant in Germany? The answer lies in the pan-European nature of the GO system.
When a consumer in Germany signs up for a “Ökostrom” (green electricity) tariff, their energy provider is obligated to prove the renewable origin of that power. Since it’s impossible to direct specific electrons to a single home, suppliers purchase GOs from producers across Europe. A certificate sold by INA in Croatia can be purchased by a German utility to match the consumption of its customers. This system ensures that for every megawatt-hour of “green” electricity a German household consumes, a corresponding megawatt-hour of clean energy was verifiably produced and fed into the European grid. This trade underpins the consumer’s ability to actively support the expansion of renewables, regardless of their physical location. Understanding the basics of solar panel manufacturing can provide further insight into the technology being supported through these purchases.
A Step Towards a Greener Future with Solar power guarantees
INA’s successful sale of solar power guarantees is more than a financial transaction; it’s a testament to the company’s evolving role in the energy transition. As Croatia and the wider European Union push for a more sustainable energy future, the importance and value of GOs will only increase.
For consumers, particularly those in countries like Germany with strong demand for green energy, these guarantees offer a tangible way to ensure their electricity choices support clean sources. They empower individuals to contribute to decarbonization. For producers like INA, GOs provide a valuable incentive to invest in the technologies and solar panel manufacturing machines needed to expand renewable capacity.
Ultimately, the market for Guarantees of Origin creates a win-win scenario, driving the transition to a greener, more sustainable energy system for all. As INA continues to grow its renewable portfolio, we can expect to see more such auctions, further fueling the growth of clean energy in Croatia and beyond.
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