Technical Due Diligence & Special Inspections

Our TÜV and VdS-trained experts draw their experience not only from our own wide-ranging operational management portfolio, but also from the thousands of solar plants we have inspected and evaluated.

Our TÜV and VdS trained experts draw their experience not only from our own wide-ranging operational management portfolio, but the thousands of solar plants we have inspected and evaluated.

We support you when it comes to evaluating the condition of your system

Confident handling of the relevant standards and a practical view of the topics to be assessed ensure that the results are presented in a comprehensible manner and that the resulting recommendations for action can be implemented. All findings are comprehensively documented and summarized in a final report. Documentation and verification create a transparent and resilient basis for evaluating a PV project and detecting any possible deficiencies.

When does a technical due diligence & special inspection make sense?

A technical solar due diligence report by greentech will provide a practical view of the technical status of your plant. This knowledge enables an objective evaluation of the quality of service being provided by your business associates.

In addition to checking the plant on site, we also do a thorough review of all technical documentation. Furthermore, we are able to conduct further analyses and simulations, so that you can consider all relevant information when thinking about the purchase of a solar power plant.

As part of our due diligence inspection, our TÜV and VdS-certified PV experts provide an independent view of your photovoltaic plant. In the event of damage or warranties that are due to expire, their expert assessment will support you in making well-founded claims and ensuring your rights.

A due diligence solar inspection provides you with all the technical information that is relevant when selling your system. Alongside the examination of the technical documentation, we also offer several visual inspections of the installed components on site, conduct thermographic examinations or analyse the performance of the system in question, on the basis of the monitoring data that is available. This enables you to negotiate the best selling price for your plant.

What makes our technical due diligence & special inspection stand out in the crowd?

Commercial solar plant in mountain setting ready to be inspected by greentech engineers based on a due diligence inspection

An independent view with a focus on quality and performance

Get the independent and unbiased view of a technically experienced PV specialist! We offer you a comprehensive overview of the technical quality of your plant and the potential performance levels.

Checks and inspections conducted by experts in the field

Our experienced technicians and engineers are TÜV and VdS-certified experts. They have already conducted a large number of inspections and assessments of solar systems, in compliance with the relevant legal requirements, norms and standards. Their many years of experience and technical expertise ensure that, wherever problems arise, suitable, practical solutions are found.

greentech technicians realizing a solar due diligence inspection in business pv plant
greentech engineer with ist equipment and tools ready to realize a due diligence inspection

Concrete optimisation proposals that can be implemented quickly

You will receive our audit and inspection results, set out clearly and presented comprehensibly. In this way, we can discuss any necessary measures and further recommendations for action and implement them quickly. This way, we contribute to the efficient performance of your system and its long service life.

Discover our full range of services for technical due diligence & special inspections

Inspection of technical documentation

Visual inspection of the documentation for comprehensiveness according to DIN EN 62446 and best practice recommendations

Documentation and presentation of the results, based on the greentech documentation checklist

On-site inspection

Comparison with the planning documents

Visual inspection of PV generators, cabling and DC sub-distribution

Visual inspection of the inverter

Visual inspection of the transformer and the transfer station

Visual inspection of other system components

Thermography of the main components (random sample)

Verification of the commissioning documents

Comprehensive report and presentation of results

Deeper analysis options

Performance analysis of historical monitoring data

  • e.g. in the context of trial operation or as in-depth analysis at regular intervals
  • Evaluation of availability and PR guarantees
  • Use of innovative and detailed analysis tools

String measurements according to DIN VDE 0126-23

Thermography of modules by drone

Thermographic examination of other electrical components

Electroluminescence measurement of PV modules

Why work with greentech?

we service | new energy

600 MWp capacity
managed so far (O&M) &
1 GW capacity inspected

Over 60 employees, including
TÜV/VdS certified experts

Experience from 250+ projects
and 12 countries

About greentech

Expertise Every Step of the Way – Across All Project Phases

greentech is a service company with locations in Hamburg, Leipzig and Milton Keynes in the UK, specializing in the engineering and operational management of photovoltaic systems. With an interdisciplinary team of experienced experts, we provide a full-service operation management concept for PV systems of all sizes, as well as services for planning, quality assurance and yield maximization. We work independently of component manufacturers and general contractors and thus exclusively represent the interests of the plant owners.

With a comprehensive range of services and a current portfolio of more than 600 MWp, we are one of the largest independent service providers worldwide. greentech’s growing customer base includes private plant owners as well as municipal utilities, regional and international energy providers, project developers, insurance companies and investment funds.

Your greentech specialists for technical due diligence

Steffen Heberlein
Steffen Heberlein

Project Manager, Sales & Business Development

Steffen Heberlein is responsible for the expansion of the business units Technical Operations Management, Commercial Operations Management and Technical Advisory. His activities for greentech’s customers range from price indications to contract negotiations and project implementation support. As a key account manager, he also looks after more than 250MWp for various customers in greentech’s existing portfolio.
Email:s.heberlein@greentech.energy
Johannes Liebich
Johannes Liebich

Head of Engineering & Technical Advisory

Johannes Liebich is head of the “Engineering & Technical Advisory” team at greentech. He is responsible for the planning and implementation of projects as well as the development of new services in technical plant consulting. Johannes Liebich studied Environmental Engineering with a focus on photovoltaics and has been working in the solar industry since 2011. As an experienced Technical Advisor, his main focus is on plant construction and operation.
E-Mail:j.liebich@greentech.energy