Panasonic's unique heterojunction technology uses ultra-thin amorphous silicon layers. These thin layers reduce losses and generate more energy than conventional solar modules. High performance at high temperatures Even if the temperature rises, the performance of the HIT® remains at a high level due to the industry-leading temperature coefficient of -0.258%/0C. No other module comes close to our temperature performance. This means more energy throughout the day, especially in summer. Quality and reliability The vertical integration of Panasonics, more than 20 years of experience in manufacturing HIT® and 20 internal tests, three times harder than required by current standards, ensure excellent quality assurance. Low degradation HIT "N-type" cells offer extremely low light aging or light induced degradation (LID) and have no potential induced degradation (PID) for reliability and long life. This technology reduces annual degradation and guarantees higher performance in the long term. 25 year product and performance warranty**. An industry-leading 25-year product warranty on workmanship and performance, backed by a centennial company: Panasonic. Plus 86.2% guaranteed output after 25 years. Higher efficiency of 19.7% with compact size Enables a higher output power and a higher energy yield. HIT® delivers maximum yield even on limited roof areas. Excellent water drainage The water drainage system drains rain and melt water and reduces water corners and dirt on the module. If there is less dirt on the solar module, more sunlight will come through, allowing more electricity to be generated.