By the Chamber of Commerce and Industry in Wiesbaden / Germany official appointed and Certified Expert / Certified Witness
for Photovoltaic Systems
Solar tecnology expert reports:
We provide you with an expert, independent, and based on the latest technology in compliance with the current DIN/ISO standards report. The report can be for the private or commercial sector. It can also advise on a plan for a solar connection with the existing heating or electrical installation in the building. These expert-reports are unique, clear and comprehensible statements end enables clients to proceed with the project.
Due to the public certification, expert reports for Photovoltaic and Solar Thermal Systems can be made for courts and tribunals.
Frequently during and after installation problems occur and difficult discussions between the investor and the installer start. The topics listed below often are the reasons for dispute.
Photovoltaic:
The initial good yields are decreasing
Optical changes, gray, yellow tinge, stain, water in the module
The expected yields of the manufacturer or installer are not reached
The yields vary only slightly, regardless of the weather
Solar cables are hot
The inverter make noise and show error messages
The cables are unprofessionally laid down
The installers arguments are barely comprehensible
The batteries in the solar system are almost always empty
Every year, the batteries must be replaced
Damage of modules or other solar components
A lightning destroyed the photovoltaic system, the PV system has no lightning protection
The insurance refuses to acknowledge and pay the damage to the PV system
Loose cables lying on the roof, solar cables are frayed
Previous repairs did not improve the yields
The payback calculations are not traceable and are wrong
The data sheets of the modules are false
the delivered modules do not meet the agrees specifications
There are no performance data (flasher data) existing
The inverters have dropouts and make nois
Due to the snow load, the module frame and the glass deforms
The cells are visible, dark traces
The traces in the solar modules are partially disrupted and destroyed
Solar thermal:
So far there are no savings identified versus the past
On sunny days there is only little more yield than on cloudy days
Even in a hot summer, it has to be heated with oil / gas / pellets
The installation does not work, even when the sun is shining
The solar system is running after sunset
The yield indicator shows sometimes positive, sometimes negative values
The collectors are frozen at low ambient temperatures
The pipe insulation is patchy
The room with the solar storage tank is often overheated
The insulation has "melted"
On sunny days it smells of melted plastic
The tank is cooling down without using hot water, the daytime heat disappears almost completely
The insulation is porous, hardened or crumbs
The glass tube collector is dull and milky
The solar energy system makes loud knocking noises
The solar circuit makes air noises and hisses in the pipes
The solar system shows an illogical behavior
The solar cycle has lost pressure and solar fluid losses
The solar system is leaking
In all of these cases official solar expert helps to identify the route cause. He can spot quite soon if it is a material error, a defective part, if the plant is not properly designed or whether an assembly error is causing the problems.
Please consult us. Contracting for an opinion by a publicly appointed and sworn expert faulty photovoltaic system or a thermal solar system is not only judicial but also private individuals and companies that have a high cost to avoid litigation.
Our offer - a detailed offer includes the following items:
Inspection of the installation
Route from Geisenheim / Germany
Travel time from Geisenheim / Germany
Time spent on the expert report
Expenses for outlays
The package includes expenses as following:
Reports in paper form and on disk, shipping, use of tools such as camera, thermal imaging camera, measuring equipment for system monitoring, films, phone, fax, internet.
For expert reports the hourly rate is oriented to the fees for official appointed and certified experts.