Sun-AP brings the World Leader and Latest in Technology PANASONIC HIT SOLAR PANELS

Sun-AP Ecopower is renowned for providing the best, most sustainable, highly efficient and reliable long-life solar-based products and solutions in India. We focus on providing the latest and advanced global technology products for solar in India.

Sun-AP now provides the latest technology solar panels, which is HIT- Heteroinjuction technology. It is included across global installers product lines, providing a unique take on the solar cell. Their HIT, HIT+ and HIT AC series are all high performers with Panasonic the most quoted solar panel brand in the US and Europe in 2019.


Panasonic HIT® is a solar technology market leader, with a significantly higher energy yield per unit of surface area compared with our competitors’ conventional modules. HIT solar panels are the world's highest cell conversion efficiency of 25.6% at R&D level.The solar cell of photovoltaic module HIT™ is original hetero-junction type which is composed of mono-crystalline and amorphous silicon layers. Amorphous silicon layers in the cells prevent recombinations of electrons and minimize the power loss; realizing industry leading level performance of generation.



There are four key metrics that you should review as you evaluate solar panel quality: efficiency, performance, warranties, and price. Sun-AP has developed Panasonic reviews for each metric to help make your solar decision easier.


The term “solar panel efficiency” refers to how well a solar panel captures sunlight and converts it into useful electricity. In the same conditions, a high-efficiency solar panel will produce more electricity than a lower-efficiency panel of the same size. For this reason, a higher efficiency solar panel is preferred.

Module Efficiency

Top-grade cells have the best efficiencies and are an important factor while choosing a solar panel. Panasonic’s next-generation Heteroinjuction (HIT) technology Panels provide the best efficiency solar panels compared to other solar panels. The 325WP model of HIT solar panel offers 19.4% module efficiency, 330 WP model offers 19.7% module efficiency.

Solar Panel Efficiency

Solar panel efficiency depends on using the above highest cell efficiency and then encapsulating it for a long life of 25 years. The panel design, size and cell layout factors when considering the efficiency of a solar panel. The cell layout and panel size define high efficiency that they need less space to function and to generate electricity.

The efficiency of Panasonic solar panels varies depending on the model chosen. While the majority of market available solar panels fall in the 14% to 18% range, the Panasonic panel efficiency can range anywhere from 19.1% to 20.3%.

Performance of Panasonic HIT panels (Temperature Coefficient)

The Temperature coefficient is an indicator of how well your solar panel can handle less-than-ideal conditions and to evaluate solar panel performance. Solar panels, like other electronic equipment, perform better when they are kept cool (ideally around 25° C/77° F). The temperature coefficient tells you how much your panel’s performance will change during hot sunny summer days.

For every degree above 25° C (77° F), your solar panel’s electricity production will decrease by its temperature coefficient. For example, Panasonic’s VBHN330SA17 panel has a temperature coefficient of -0.258%/°C; which means if the panel’s temperature increases by one degree, its electricity production will decrease by 0.26%. If its temperature increases to 35° C (95° F), electricity production will reduce by 2.6%.

Panasonic’s HIT™ technology is what gives their products high solar panel efficiency and low-temperature coefficient, both of which result in higher electricity production. Conventional solar panels use a single layer of a monocrystalline or polycrystalline silicon layer. HIT™ solar panels use a combination of monocrystalline and ultra-thin amorphous silicon layers to reduce power loss. The surface of Panasonic’s panels also has a pyramid structure that can reduce reflection and direct more sunlight into the solar cells, which also maximizes electricity output.


Whether you’re buying a TV, a car, or solar panels, the manufacturer should stand behind their product with a strong warranty. Solar panel material warranty- referred to as product or equipment warranty. It is a guarantee provided by the manufacturer, the solar panel will be replaced if the panel stops functioning as a result of manufacturing defects or environmental issues.

Panasonic offers 10-year product warranty and 25-year warranty on power output globally for its HIT panels against any defects in their solar panels.


Panasonic Solar Panels are Internationally Certified and have the following certifications:

  • IEC 61215: Design qualification & Crystalline PV Modules Approval.
  • IEC 61730-1: PV Module Safety Qualification.
  • IEC 61730-2: PV Module Safety Qualification.
  • IEC 62716: Ammonia Corrosion Testing.
  • IEC 61701: Salt Mist Corrosion Testing.
  • IEC 62804: Durability &Short Term High Voltage Stress including PID.