Victor Segato

ANEELIt created the fast track: a simplified process for systems with inverter power up to 7,5 kW, guaranteeing faster project approval. For many, this limitation seemed like an obstacle. For the strategic integrator, however, it became an optimization challenge. The question shifted from "is it possible to install?" to "how to install the most productive and profitable system within this limit?". The answer lies in the microinverter architecture. The overload paradox: the key to maximizing generation. The Fast Track rule is simple: the 7,5 kW limit applies to the inverter power (kW), not the module power (kWp). That's precisely where the first strategic advantage arises. Intelligent overload combined with MLPE (Module-Level Power Electronics) technology are the real secrets to transforming a regulatory limitation into a competitive advantage. This is what guarantees more kWh for the end customer, especially during times of low solar irradiance and on cloudy days. In a system limited to 7,5 kW of inverters, the only way to maximize energy generation throughout the day is through this concept: installing more power modules to increase production outside of peak hours, more than compensating for clipping during periods of high irradiance. The battle of architecture: 4 vs. 6 (inputs) TSUNESS, like other brands, offers robust 2.500 W solutions with four inputs and 4 MPPTs, such as the TSOL-MX2500 model. However, when the goal is to maximize performance within the 7,5 kW limit of the Fast Track, this approach reveals a crucial limitation: the limitation of installed power. For 7,5 kW, three TSOL-MX2500 units would be needed, allowing the connection of a maximum of 12 modules. This restricts the installed capacity and, consequently, the total energy generation of the system. TSUNESS integrators are already accustomed to installing 7,5 kW systems using 2 TSOL-MX2250 units (4 modules) plus 1 TSOL-MX3000D unit (6 modules), reaching 14 modules at 7,5 kW. TSUNESS has now developed a new architecture that expands the generation potential of Fast Track systems, the TSOL-MX2500D, to 6 modules. Notes: Non-commercial modules are shown in red. 2,5kW Microinverter with 4 Inputs Does Not Offer Good Overload Conditions and Generates Low Efficiency During Low Irradiation Periods TSOL-MX2500D: Advanced Solution for Fast Track The TSOL-MX2500D microinverter was designed with a different premise: a maximum power of 2,5 kW with 6 module inputs, making it an excellent solution for Fast Track systems for several reasons: High overload factor: With 3 TSOL-MX2500D units, the integrator can install 18 photovoltaic modules at 7,5 kW instead of 12, 14, or even 16 modules, as is more common in systems, increasing the possibilities for overload; More flexibility in module selection: The architecture of 6 independent inputs per microinverter allows the maximum output power to be achieved even with lower power modules (from 430 W). For example, when using 580 Wp modules, it is possible to achieve approximately 35% overloading, ensuring excellent utilization and design flexibility; Easier Installation: Due to the weight and dimensions, it becomes more practical and safe to install on roofs using 580 W modules instead of 700 W. With the TSOL-MX2500D microinverter, the integrator maintains the flexibility to choose lower power modules and still obtain excellent performance with a high overload factor. The integrator who chooses the TSOL-MX2500D delivers a more profitable plant to the end customer while simultaneously ensuring their own competitiveness in an increasingly competitive market. And the future? Larger or smaller modules? Recently, the Brazilian government revoked five tariff exemptions for HJT photovoltaic modules. The decision was published in GECEX Resolution No. 782/2025, and the benefit ended on October 28, 2025. The exemption from import tax was undoubtedly the main factor that encouraged distributors to import modules larger than 700 W, even for rooftop power plants. Now, without that tax advantage that directly impacted the final price for the consumer, modules in other power ranges have similar cost per Wp with better applicability. The trend is that with the end of the former tariffs, we are beginning to see a natural movement back to lower power modules, between 550 and 610 W, due to better logistics and safety, especially in rooftop installations. The TSOL-MX2500D presents itself as an advanced solution for fast track traffic in Brazil. Fast Track is a regulatory solution for reversing traffic flow in concessionaires. The new TSOL-MX2500D microinverter is the opportunity integrators are looking for as a strategy to maximize results in 7,5 kW power plants. Its architecture of 6 independent 2,5 kW inputs achieves a high overload rate, reaching maximum system efficiency with 18 modules at 7,5 kW. This means more energy generation, greater financial return for the end customer, and a competitive advantage for the integrator. The TSOL-MX2500D combines design flexibility (MLPE) with safety (low voltage 60Vdc), eliminating RSD issues and offering competitiveness. In this context, the TSOL-MX2500D establishes itself as an excellent solution already available on the Brazilian market. https://canalsolar.com.br/maxsul-tsuness-firmam-parceria-estrategica-brasil/

Victor Segato

Published articles

TSUNESS launches microinverters for 6 modules and follows the end of the ex-tariffs.

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