Thin-Film Technology and BIPV — NexPower Technology Corp.

Although solar power generation depends on sunshine, it is a well-known fact that heat would hamper power generation efficiency. Unfortunately, many developing countries are located in heat belts. Therefore high efficiency affordable solar technology is very sought after in these areas. NexPower Technology is a subsidiary of UMC semiconductor foundry. The company focuses on thin film technology development and its applications. NexPower is one of the world’s leading manufacturers of thin film technology. By utilizing high quality thin film PV, the company is able to develop a wide range of system solutions for tropic regions.

System Specifications

System Features

  1. Max output: 4000W
  2. Output voltage: 120/230/240V AC
  3. System Capacity: 2300Wh
Package Specs Quantity
PV panel 150W 64V 20
Charger 3000W 2
Inverter 4000W 1
Battery 12V 100Ah 12
  1. High performance in hot seasons and heat belts compared to other similar PV systems.
  2. Higher power generation under low irradiance.
  3. Ranks 3rd worldwide in power generation systems in cold weather.
  4. Longer effective power generating time.

Thin film solar cells are most suitable to be used in building integrated PV (BIPV) projects. By integrating power generating cells with the construction, the eco-building concept could be achieved. With BIPV, the architecture could produce solar electricity while simultaneously achieving thermal insulation, sound protection and shading. Multicolored BIPV panels could also be used for more creative façade design. In installation potential, BIPV could be used as building skylight, façade or roofing tile. Vertical installation is also a possibility in public spaces as noise reduction fences with power generating capacity.

NexPower’s thin-film panels could absorb a wider spectrum of light and are less sensitive to dimming in sunlight and more resistant to heat, resulting in longer power generating time. Coupling higher power generation efficiency with low installation cost, the system is particularly suitable for tropic regions. In a photon module field test in Singapore, it was proven that thin-film PV could produce 50% more power than crystalline cells under 28 degrees Celsius climate. Another advantage of thin-film technology compared to common crystalline cells is the bi-facial power generating ability.

(a)   Efficiency comparison between thin-film and crystalline


Source: NexPower Technology Corp.

Currently, NexPower’s tropic system solution is installed in India, Thailand and Indonesia as off-grid or hybrid systems for home use, telecom stations and water pumps. After the 2004 tsunami in Indonesia, NexPower’s solar systems for public clinics near coastal areas played a large role in providing continuous health care for the local people. In addition to tropic solar systems, BIPV is also one of NexPower’s greatest advantages. Some of their largest BIPV projects were cooperated with architects in Europe and Japan.

(b)   NexPower Demo House

(c) Collaborated BIPV Project in Japan

 Image  Image

Source: NexPower Technology Corp.

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