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Yield Assessment

A PV yield analysis is an elementary component of PV plant planning.

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Yield Assessment

The most reliable basis on which to plan your project

As a basis for project financing, a solid solar energy yield analysis is an elementary component in plant planning. It also provides the reference framework for possible guarantees within the scope of technical management. Methodically correct preparation, taking all of the individual influencing factors and manufacturers’ information on the individual components into account, is therefore indispensable for a reliable yield forecast that will be accepted by banks, potential buyers and technical consultants.

greentech will prepare a substantiated yield assessment, taking all relevant factors into account, resulting in a detailed and realistic forecast for your PV farm, so you can be sure of the exact potential of your actual or planned photovoltaic installation.

In estimating the most realistic maximum yields and performances of PV systems, we have the particular benefit of our many years of experience in operational management. We can reliably assess and justify why forecasts may have been too optimistic or too conservative.

Solar modules on green field after successful yield assessment

When does a Yield Assessment make sense?

Do you need to secure funding for your PV project?

A PV yield assessment enables a precise prognosis of the profitability of a future PV project and serves to provide investors or banks with justification in terms of the profitability of your project.

To include the value of your PV plant in your sales offer, as a selling point

The yield assessment serves as an argument during purchase or sales negotiations. It provides objective, specialist justification of the proposed purchase or selling price. It is not uncommon for the various parties to commission their own yield assessments, and the results and estimates thereof are subsequently discussed and debated during the course of the negotiations.

Are you planning to convince investors to participate in your future PV project?

A yield assessment offers potential investors transparency regarding the projected income of the photovoltaic plant. This makes it possible for them to calculate directly, whether or not it will pay them to participate in the project in question.

If you want to analyze the impact of technical changes, such as inverter repowering

If there are to be any technical changes to the plant, the yield evaluation provides information as to whether the conversion will result in significant improvement or even deterioration in terms of yield. For example, replacing old inverters with new models could result in significantly increased yields, due to the higher efficiency levels of the new components.

If you want to analyze the different layout options of a project for your financial model

Different focuses in terms of design also result in differences in yield potential for the plant. Do you already have a design? We would be happy to check whether the yield could be optimized even further by making specific changes to the plant design. If you have several proposed designs, we will gladly identify the proposal with the highest yield prospects or advise you on what else you should take into account when making your decision.

If you want an independent assessment of the yield potential of your PV project

As owner’s engineer, we provide you with substantiated analyses and evaluations of external yield surveys.
This gives you, as the project planner or operator, an independent view of the potential earning power of your PV plant.

How do we approach your Yield Assessment?


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Talk to our specialists at greentech about your needs in terms of an energy yield analysis.


Reliable yield forecasts through practical experience and the latest yield simulations

Our analyses and evaluations are based on our technical expertise and our comprehensive experience in the field of operation and maintenance (O&M). After a holistic consideration of all the parameters and sources that are significant for a yield assessment, we will provide you with the information you need. We do not sugarcoat anything – instead, we provide a realistic, objective assessment of the expected yields, that can be used by all parties involved.

Over 100 successful bankable yield assessments

As owner’s engineer, besides preparing our own yield reports, we also regularly analyse and evaluate externally prepared documents. We are happy to present the results to you and explain our assumptions and conclusions, giving you a second opinion and the opportunity to compare them with the initial report. We have prepared or reviewed more than 100 yield reports over the last few years.

White listed by banks, potential buyers and technical consultants

With our extensive experience as photovoltaic specialists, we are well established in the market. We are one of the largest independent operators of solar power plants worldwide, with a steadily growing portfolio. The quality and reliability of our yield assessments are highly regarded by financial institutions, investors, technical consultants and customers alike.

A comprehensive consulting approach & ongoing support

We will gladly continue to support you after the planning and start-up phase: we support you during the construction phase, and thereafter, we ensure the best possible performance from your plant throughout its entire life cycle. This means that you have a long-term partner standing by, who not only knows your plant, but also understands it.

Discover our full range of services for your
Yield Assessment

Yield simulation in PVSyst

Analysis of technical design

Irradiation analysis (e.g. from DWD, PVGIS, Copernicus, Meteonorm)

Shading analysis

PVSyst simulation execution

Evaluation of loss factors and KPI

PVSyst report

Detailed yield report and presentation of results

White Paper

A good energy yield analysis shows one thing above all: a realistic result

When planning a PV park or a PV plant, the yield report plays a significant role: it serves to determine the subsequent plant performance and provides the various stakeholders with valuable information about their potential project.

Yield report at a glance

  • Objectively created for the most realistic result possible
  • Surveyed comprehensively and in detail for best possible accuracy
  • If required: Planning of plant communication
  • Conclusively justified for best possible transparency and comprehensibility of all using parties.
White paper about yield assessment

Frequently asked questions

Ask everything you need to know about Yield assessment

What do “bankable" and "whitelisted" mean?

greentech offers detailed yield assessments that take all relevant aspects into consideration and offer objective results. Our solar yield assessments are accepted by all banks and technical consultants, which makes them “bankable”. Furthermore, greentech is “whitelisted” at many financing banks as a professional provider of yield assessments. These whitelists are made available to project developers and investors, as a recommendation of bankable service providers. To secure the financing of a project, it is critical that the yield assessment is accepted by the financing party.

I already have a yield assessment, but I need it to be checked independently. Can you help me?

Yes we can. Part of our role as owner’s-engineer is to analyze and evaluate existing yield assessments, which we do regularly. This gives you an independent view of the potential production of the PV plant and a good basis for negotiations. This is also common for larger projects, as the financing bank will require more than one independent photovoltaic yield assessment, in order to increase the reliability of the results of the prognosis.

What is the timeline for getting a yield assessment?

As soon as we have received the relevant project documentation, such as .pan files, topography, layout and component datasheets, we will need 1-2 weeks to work through the project and finalize the report.

How much does a yield assessment cost?

The production simulation alone starts at EUR 950 for one iteration, while the full yield assessment starts at EUR 1,990. Both prices are dependant on the complexity and size of the project.

What is the difference between a simulation and a yield assessment?

A simulation is the file (PDF) exported from the simulation software we use, PVsyst, which includes all the results from the actual simulation. A full yield assessment takes these results into account, but goes further by explaining the results in detail, including an analysis of the choice of components, the layout of the project and the DC/AC ratio. All these additional parameters are carefully checked and examined with regard to optimisation potential. The results of this analysis are collected and presented in a comprehensive report.

Still have questions?

Can’t find the answer you’re looking for? Please get in touch with our team of experts

Why work with greentech?

Years of experience


Professionals in our team

under management

About greentech

With advice and action at your side - in every phase of your project

greentech is an integrated PV specialist. The range of services includes project development, system design, construction, operation and management of PV power plants in Europe. In the area of operational management, we offer a full-service operational management concept for PV plants of all sizes with an interdisciplinary team of experienced experts, as well as services for planning, quality assurance and yield maximisation. With a comprehensive range of services and a current portfolio of more than 1 GWp in operational management, we are one of the largest independent service providers worldwide. As an integrated PV specialist, greentech also covers the areas of project development and plant construction.

Your greentech specialists for professional
Yield assessments

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 and for 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.
Steffen Heberlein

Senior 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.

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