Blog - Solar panels

Small size 20Wp and 40Wp solar panels

Small size 20Wp and 40Wp solar panels

Solar panels for small size off-grid installations and.

Another small solar GridFree installation

Another small solar GridFree installation

Just 3 panels, 3 . Ideal to balance the energy consumption in the household.

Start saving the energy from the grid by the self-production of your own energy.

GWL/Power - the European support partner for Solar products

GWL/Power - the European support partner for Solar products

We wish to help you to get the best results of the solar technology.

Check the latest information. We hope you can learn from the links bellow and get support for your projects.

What is the aging rate of the solar panels fro

FAQ: What is inside the junction box on the back side...

FAQ: What is inside the junction box on the back side of the solar panel?

Answer: The junction box contains terminal wires (+ pole), (- minus)and also by-pass diodes.

The purpose of bypass diodes is to shunt the current around a shaded,weak or damaged panel. Otherwise there isthe risk that full current from the rest of the panels will pass

The micro-inverter installation of multiple units

The micro-inverter installation of multiple units

Simply connect one-by-one and you have it done!

More detail about microinverters?

FAQ: Difference between the Poly and Mono solar...

FAQ: Difference between the Poly and Mono solar panels?

Question: What is the technical difference between the 250Wp Poly and 250Wp Mono solar panels?

Answer: In fact there is not much difference. In 2014 the solar technology has progressed to same levels both for poly and mono types of cells, so that there is no significant difference

FAQ: The solar panels and the snow – how to install...

FAQ: The solar panels and the snow – how to install properly?

The solar panels are designed to resist the heavy winds and the pressure from the loads by thick layers of snow. What requirements are defining the module load resistance?

The solar panel load resistance depends on the selection of frame and glass,

Promoting the TOP LiFePO4 brands at InterSolar 2014

Promoting the TOP LiFePO4 brands at InterSolar 2014

GWL has been promoting the TOP LiFePO4 brands and products at InterSolar 2014. See our promoted brands and products:

Winston LiFePO4 cells -

CALB models SE and CA -

Infra-red thermal camera for solar panel inspections

Infra-red thermal camera for solar panel inspections

The photos show the real example of testing results using the infra-red thermal camera. From top to bottom:

1) One section of the solar panel is poorly connected inside the junction box. The whole section generates less power and overheats.

2)

Multiple solar panels connected to single micro inverter

Multiple solar panels connected to single micro inverter

The graphs are showing the energy yields from multiple solar panels connected to single micro-inverter with a 230Watt rating. The graphs show results from a 250Wp panel, a 290Wp panel and two 250Wp panels in parallel making an equivalent of a 500Wp solar