The Cheapest Electricity with Valoe´s Next Generation Finnish Solar Modules


Valoe´s IBC Cell Technology 

   N-type IBC cells have an unlimited life span

Out of the various solar cells on the market the Interdigitated Back Contact (IBC) cells offer significant benefits in terms of efficiency and economic lifetime. However, they are more difficult to manufacture than most of the other cells.

The front side of the Valoe´s bifacial IBC cell converts up to 23% of solar energy into electricity. The back of the cell is also designed to collect reflected sunlight, which further increases the efficiency. In addition, low temperature coefficient maximizes energy yield.

The power generation capacity is over 50% higher than that of a conventional cell. In a photovoltaic system, this means either a 50% higher return on the dedicated area or a smaller, less expensive system, respectively.

In the new N-type mono crystal cell, all contacts are at the back side of the cell. There are no conductors on the front of the cell, so a clean surface optimizes the electricity output and gives a module made using these cells a s stylish look.
The degeneration caused by light (LID = Light Induced Degradation) and potential (PID = Potential Induced Degradation) can significantly reduce the yield of traditional P-type high-efficiency cells. The N-type silicon is immune to light and potential degenerating effect. Degradation in the N-type over time will not cause a decrease in electricity production. The N-type cell is resistant to wear giving modules the longest lifespan.

The special features of an IBC cell are best utilized when the IBC cells are used with the back contact modules.

 Valoe Back Contact Module and Conductive Back Sheet (CBS)  

Back Contact technology brings efficiency, versatility and long service life

The back contack technology represents a new generation of panel design. In a back contact module, the solar electricity is derived from the back side of the cells to a conductive and flexible circuit board. The front of the module is completely left for the power generation without any shading metal wires connected to the cells with thousands of easily breakable and poisonous lead containing solders. The patented back contact production technology avoids the cracking problem caused by the soldering process and commonly found in a traditional H-type module. 

In the back contact modules the benefits and the efficiency of the IBC cells are fully exploited. Valoe’s highly automated and robotized manufacturing processes produces efficient, homogeneous and durable solar modules. 

Further, the design and manufacturing technology make the back contact modules easy to adopt according to the application. When needed, the module can be cut to various forms or can also be bent.

Valoe, with its customers and partners, is already planning various new applications for solar electricity where conventional panels couldn’t be used. The high efficiency of the Valoe´s IBC modules  dramatically drops the break-even in many new solar applications.   

Aiming for efficiency, durability and long life

The quality of the cells is the most important factor for the high electricity production over the long lifetime of the back contact modules. The IBC cell retains its operational abilities regardless of how long the module will last in operation. The traditional P-type module loses its production capacity over time and lowers the modules economic lifetime.
The front of the Valoe back contact module generates electricity on all its surface. No shading metal wires and no risk of cell damage caused by soldering process.   

Valoe’s glass-glass design provides the best protection against mechanical or chemical damages during the module lifetime. No ageing of plastics sometime causing total failures. The glass-glass structure is best suited to protect the module against UV radiation, humidity, wind, sand and other environmental hazards and preserves the high-performance module efficiency over years.

Bifacial solar modules produce the most economical electricity as the back side of the module collects additional electricity from the reflected light. 

Efficient modules effectively reduce power plant investment because the calculated amount of electricity is obtained from a smaller land area, with a lower amount of the modules, less cables and cabling work, less installation work and far less maintenance over the years.
Valoe’s production technology is based on, automated and robotized processes where production can be decentralized due to the low infrastructure cost of the plant and to the need of training only very small amount of key personnel. A decentralized production reduces drastically the carbon footprint compared to the centralized mass production, typically in the Far East, with all the logistic and other challenges. The maximum local involvement will also accelerate the adoption of solar power with all its positive, sometimes indirect, influence on the market covered by the module production plant..    
One important detail is that a back contact module doesn’t contain any soldering lead and is fully recyclable.   


Cells from Vilnius, Modules from Mikkeli

Chrome II (Glass-glass Back Contact) Module is in commercial production in Mikkeli. The modules are manufactured with an automated and robotized production line. Only 4-6 people is needed in one shift. The plant also participates in product development projects. Testing, redesign and industrialization can be carried out quickly and under Valoe’s full control, everything directly in production scale.

In the spring 2018, Valoe accelerated its own IBC cell development project by buying a solar cell manufacturing plant from Italy and by moving that to Vilnius to the premises of Solitek, a Lithuanian cell manufacturer, one of the very few still in operation in Europe. 

Valoe’s development of fitting the MWT (Metal Wrap Through) cell to back contact module continued in collaboration with Solitek using the existing cell manufacturing line modified for the MWT cell production. 

At the same time Valoe made a Development Agreement with The International Solar Energy Research Center Konstanz e.V., ISC Konstanz, about adopting the IBC cells ISC Kontanz had developed under the name Zebra to be fitted into the Valoe back contact modules.

In February 2019, Valoe acquired the cell production of Solitek R&D and started to modify the cell production lines for the IBC cells with ISC-Konstanz. The IBC cell  production is planned to start late 2019. 

Quality and safety are the most important to us. It is great that in Mikkeli there is production of world-class solar panels   

Ilkka Kujala

Valoe, Production


Chrome II Solar Module

 One-sided Back Contact Module

A one-sided glass-glass module made in Finland, suitable for all types of roofing and vertical installation (e.g. facades). 
Durable glass-Glass design
· Special coated front glass for reduced fouling
· MWT cells – no busbars/wiring on the front of the cell
· POE encapsulation eliminates PID and provides extra long lifetime
· 295-315 Wp
· Dimensions 1619 x 988 x 35 mm, weight 21.1 kg (framed)

25-Year Product warranty
40 years of electricity output guarantee
In production, at the Valoe´s Mikkeli factory

Valoe Chrystal 

   Single Sided IBC Module

A new generation of Finnish single-sided glass-glass panels that are suitable for slanted roofs and vertical installation (e.g. facades).   
60 IBC-Cells  
Available with or without black anodised frame.   

Preliminary specification:
·   Durable glass-Glass design
·   Special coated front glass for reduced fouling
·   IBC cells – No metal connections/wiring on the front of the cubicle
·   n – Type sensor, no LID or PID degeneration,
    Low temperature coefficient
·   355-375Wp
·   Dimensions 1668 x 1005 x 5 mm, Weight 19.8 kg (frameless)
·   Dimensions 1674 x 1011 x 35 mm, weight 21.4 kg 

Available by the end of the year 2019.

Valoe Chrystal Twin 

Bifacial IBC Module

A new generation of Finnish bifacial glass-glass modules. 
Preliminary specification:
·   Durable glass-glass design
·   Bifacial Design – Also generates electricity from the rear side  
·   144 half cells
·   530-560 Wpe
·   Dimensions 1980 x 1005 x 5 mm, Weight 19.8 kg (frameless)
·   Dimensions 2046 x 1011 x 35 mm, weight 26.4 kg 

Available from late 2019. 

Valoe´s Solar Power Plants

   The Finnish panel manufacturing and its own system design ensures the functionality and longevity of solar power plants in Finland's climatic conditions.


The right size system for the right place
Every installation of a photovoltaic system is always an individual, and generic desing is seldom the best. Our engineers will measure the size of the system according to your electricity requirements. In addition to its own expertise, design uses the latest design software in the industry and the weather history of the region. 

Correct installation is the key to the right result 
Valoe complies with all applicable standards in its installations, thus ensuring the safety and long life of the solar power station. Our own installers and trained installer network have solid experience in installing all-size systems. The dealer installation network must also meet the quality criteria set by the light.
In recognition of the high degree of the domestic content, The Association for Finnish Work has issued Valoe the Key Flag as a symbol of origin. 

It is important for us to provide the customer with a sustainable power plant, where everything is carefully designed and built with the best materials on the market.    

Teemu Pulkkinen

Valoe, Customer Projects