Energy yield assessment

We assess the site data, the system characteristics, the design inputs and the production calculations.

We review production models built in tools such as PVsyst, and the PVsyst report itself, together with their inputs and assumptions, and report plainly which assumptions the result depends on. A project's bankability rests largely on this estimate, because lenders size the debt on it.

An analyst working through data tables and charts on a multi-monitor workstation

How we work

We assess your investment's production expectations and the assumptions behind them.

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Data sources and model inputs
We gather and review the solar resource data, and review the site data, the system characteristics and the design inputs that the production calculation rests on.
Loss assumptions
We assess the loss assumptions behind the production calculation against the project's own characteristics and its location.
Production estimate
We review the plant's three-dimensional model, the shading analysis, the inputs and the loss assumptions, and assess its expected production.
Uncertainty assessment
We assess the uncertainty in the production expectation and report the results, such as the P50 and P90 values, with their assumptions.

What we deliver

Our deliverables are set by the scope of each job; we do not hand over the same report package on every project.

Data sources
We state the source and period of the solar resource and site data we use.
Model inputs
We list the equipment characteristics and design inputs that go into the model.
Loss assumptions
We show each loss item with the assumption it rests on.
Production estimates
We present the plant's expected energy production with the steps of the calculation.
Uncertainty assessment
We explain the uncertainty in the production expectation and values such as P50 and P90.
Conclusions
We summarise separately which assumptions the result depends on.