Thun, 11 February 2013
Meyer Burger's revolutionary SmartWire Connection Technology significantly
lowers photovoltaic production costs and boosts PV system energy yield by 10%
SmartWire Connection Technology (SWCT) offers customers the following
*Power: 5% higher power output compared to best-in-class 3BB technology
*Energy yield: 10% higher energy yield (kWh/kWp)
*TCO: reduction of up to 0.25 USD/cell
*Available for existing and future crystalline silicon cell types
Meyer Burger's (SIX Swiss Exchange: MBTN) patented SmartWire Connection
Technology (SWCT) for solar cells achieves higher efficiency solar modules and
reduces production costs in PV manufacturing. Solar cells are electrically
connected using thin copper wires on both sides of the cell thereby replacing
the classic 2 to 3 busbars. Typically, 30 very fine copper wires are used for
cell connection generating up to 2,000 contact points per cell.
5% higher module power and 10% more energy yield (kWh/kWp)
SWCT's fine copper wires reduce shading on the solar cell by 3% in comparison
to cells with 3 busbars. Coupled with its 2% lower series resistance, SWCT
technology increases the power output of a solar module by 5%. The round
copper wires used in SmartWire technology increase the amount of sunlight
reflected onto the cells resulting in SWCT contacted modules beginning to
produce electricity earlier in the day and stop producing electricity later in
the day. This leads to an increased energy yield of about 10% (kWh/kWp)
compared to busbar technology. SWCT increases cell stability and reduces the
impact of possible micro-cracks on the power of the solar module. Micro-cracks
are the most common cause of energy loss in solar modules
Reduction of production costs up to -0.25 USD/cell
The proven SWCT technology significantly reduces the cost of production by
eliminating the busbars on both sides of the cell and optimising finger widths
thus reducing silver quantity by up to 80%. Based on the current price of 30
USD/troy ounce for silver, this reduction in silver results in up to 0,25
USD/cell lower material costs.
Universal cell compatibility
SWCT is compatible to all crystalline silicon cell technologies: selective
emitter, PERC and Heterojunction (HJT) in both p- and n-type silicon cells.
Wafer thickness can be as low as 100 µm and thinnest finger widths can be used
in SWCT technology. This very future oriented technology can also be applied
to the next generation of finger metallisation technologies.
SmartWire Connection Technology and Heterojunction cells - high performance
Heterojunction (HJT) cells are very sensitive to high temperatures above 180°C
that are typical of traditional busbar soldering. The innovative SWCT copper
wire process takes place at lower temperature which not only enables contact
to be made with high performance HJT cells, the lower temperatures further
reduces energy costs during module production. Modules combining HJT cell
technology with the SmartWire Connection Technology have achieved active area
efficiencies of over 20%. The SWCT process is self-aligning and omits
complicated ribbon lay-out on the contact surface of the cell.
The SmartWire Connection technology rounds out Meyer Burger's product
portfolio and combines the advantages of leading PV technologies to increase
the overall performance of cells and modules and to achieve a sustainable
reduction in the cost of solar energy. The SGS Fresenius Institute has already
certified Heterojunction (HJT) modules with the innovative SmartWire
Connection technology and Meyer Burger's laboratories have successfully
performed 4-fold IEC-compliant damp heat and 8-fold temperature cycles.
For further information, please contact:
Meyer Burger Technology AG
Tel: +41 33 221 28 34
About Meyer Burger Technology Ltd
Meyer Burger is a leading global technology Group. Our innovative systems and
production equipment create sustainable value for our customers in
photovoltaics (solar industry), in the semiconductor and optoelectronic
industries as well as other selected industries which focus on semiconductor
materials. The Group currently employs about 2,270 people across three
continents. In our core business - photovoltaics - integrated systems and
solutions which increase manufacturing performance and efficiency are the
cornerstones of our corporate strategy. The Meyer Burger Group's industry
expertise and leading photovoltaic technologies along the entire value chain
encompass all important production processes, systems and equipment for solar
production from wafers to building integrated solar systems.
The Group's core competencies cover a broad range of production processes,
machines and systems that are used for the production of ultra-thin, high
quality wafers, for coating and optimizing as well as inspection and
measurement of high performance solar cells, for laminating, soldering and
testing of solar modules and for building-integrated solar systems.
A worldwide service network including spare parts, consumables, re-grooving
services, process know-how, customer support, after-sales services, training
and other services completes the Group's comprehensive product portfolio.
Meyer Burger Group is represented in Europe, Asia and North America in the
respective key markets and has subsidiaries and own service centres in China,
Germany, India, Japan, Korea, the Netherlands, Switzerland, Singapore, Taiwan
and the USA. The company relies on selected independent agents in other
important markets. The registered shares of Meyer Burger Technology Ltd are
listed on the SIX Swiss Exchange (Ticker: MBTN).
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