The first studies on the degradation on PV modules performance begun in the seventies but only in the 2000s, with the widespread use of photovoltaic systems, the causes of the early decay of the module performance have been examined.
LID (Light Induced Degradation) is a first phenomenon of performance decay that affects the panel in the first moment of exposure to the sun; this phenomenon stops after some initial diminished performances and the module maintains its own characteristics within the warranty limits.
The second but much more heavier phenomenon is PID (Potential Induced Degradation) due to the difference in tension that is established between the cells and the frame of the modules.
The electric field that develops lead to two type of effects:
- the migration of sodium ions present in the glass toward the cells and the frame
- the polarization of the cells surface.
The first effect changes the characteristic of the cells themselves with a considerable reduction of the generated power, whereas the second effect can be undone by reversing polarity (for example at night).
Significant reduction of the PID phenomenon
The PID phenomenon is significantly reduced in the PV modules that have high quality quartz glass, which by their nature contains small concentration of sodium, with the optimization of the distances and of the EVA layer (the material that encloses the cells); it is thus important to rely on manufacturers of quality modules
In the Book Energetic Systems 4.0 dedicated section
This topic is presented in the section dedicated to photovoltaics on the book “Energetic Systems 4.0 innovative technologies for buildings and mobility” published by VP Solar engineers with the aim to lead resellers, installers and designers towards the evolution of the energetic systems’ market.
VP Solar has also dedicated specific services to support the revamping activities for the technical and product choices when the performances of a PV installation in operation need to be improved
PV Modules, BenQ
BenQ: GreenTriplex 250/265W PM060P00
BenQ Solar is designed to provide quality and comprehensive high-performance photovoltaic modules, as well as to respond to the needs of each client.
BenQ Solar has combined M.Setek, AUO crystal, and AUO SunPower to form a high-efficiency solar chain.
To provide the most reliable photovoltaic module the quality of each individual component is tested.
Are no unique solutions to meet the needs of residential, commercial and utility.
Based on these advantages, we believe that BenQ Solar is undoubtedly the best choice to meet the demands of industries.SKU: n/a
PV Modules, BenQ
BenQ: SunForte 320/335Wp PM096B00
BenQ Solar is specialized in the production of high-efficiency solar solutions for residential, commercial and utility customers.
With the back-contact technology the SunForte PM096B00 reaches maximum efficiency, up to 20.4%, with an output power of up to 333W.
The SunForte PM096B00 also includes a transformerless solution offers better temperature coefficients and higher energy efficiency than conventional c-Si modules.
In addition it has the 34% more of the rated output power compared to conventional modules with the same surface, and save the 24% on the surface with the same output power.
- Power range: 320 – 335 Wp
- Mono-Crystalline Photovoltaic Module
PV Modules, Conergy
CPP265P – CPP270P
Conergy Power Plus is the photovoltaic module offer a premium quality and guarantee high system yields and reliable operation for the duration of the system under any condition, even the most demanding.
They are manufactured to the highest quality standards and are characterized and are characterized by many details and fine features and conscious features that enhance its energy efficiency.SKU: n/a
PV Modules, Jinko Solar
Jinko Solar: Eagle JKMXXXPP-60 – 4 bus bar
JinkoSolar modules from the Eagle series are the world’s first PID-free modules, with 85 ° C / 85% RH conditions.
The modules are designed to give maximum performance even in high temperature and humidity situations.
Thanks to power classes up to 270Wp, Eagle is the 60-cell type most powerful in the market.SKU: n/a
PV Modules, Kioto
Kioto: Pure-60 KPV ME NEC 280/285/290/300/305 Wp mono
The high efficiency PURE-60 solar modules, monoscrittalline cells with a maximum output of 300 Wp.
- Guaranteed 12 years
- products with 100% Austrian high quality components
- Assembly solution of the renewed frame, even more secure, easy to install and without sharp corners
PV Modules, Kioto
Kioto: PURE-60 KPV PE NEC 275 Wp poly
The solar modules with high efficiency, with a maximum output of 290Wp, are produced with the latest technology in Austria. The modules have a tolerance of + 5W / -0W power and are equipped with a Tyco-outlet and two 1 m solar cables with pre-assembled connectors.SKU: n/a
PV Modules, LG
LG: NeON 2 Black
The LG NeON® 2 Black solar module featuring a black anodized frame and black back sheet has been designed with improved aesthetics.
Adopts CELLO technology. CELLO technology replaces 3 busbars with 12 thin wires to enhance power output and reliability.
- 25 year linear warranty
- 25 year product warranty
- CELLO technology
- Uniform black effect
- Available powers: 325W / 320W /
PV Modules, LG
LG: NeON R Q1C-A5 – 370Wp
LG NeON® R monocrystalline photovoltaic module of 60 cells with high performance and maximum power 370Wp.
The innovative cell structure without standard busbars on the cell front, improving performance and reliability.
- Linear Warranty: 25 yrs
- After 25 years minimum power make sure 88.4%
- Available models: 360 – 365 – 370 Wp
PV Modules, LG
LG: NeON® 2 BiFacial 72 cells LG3XXN2T-A5
Photovoltaic module with high performance CELLO technology with 72 highly efficient mono-crystalline cells. It also adopts the prizewinning Cello technology which replaces 4 busbars with 12 thin wires to enhance power output and reliability.
- Performance increases under optimal conditions up to 514 W.
- Bifacial module
- Trasparent Backsheet
- 72 cell
- 395W or 390W
PV Modules, Panasonic
Panasonic HIT KURO
HIT® KURO is the “total black” module from Panasonic with the highest efficiency (19.4%), a compact size and the best temperature coefficient in the sector (-0.258% / ° C).
- Total black
- 25 year warranty
- Reduced degradation
- Available in sizes 320W and 325W