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About Us

Over 30 years of experience at your service

Dr Wolfgang Schlez, the founder and sole owner of ProPlanEn started his professional career in renewables in 1989, after joining the research group Physics of Renewable Energy Systems (PRE), Department of Physics, Carl von Ossietzky University Oldenburg, Germany. 

The early years 1989-1995:

Carried out wind measurements, anemometer calibrations, authored checked and approved a large number of wind resource assessments for utilities, local government and farmers in Northern Germany who were planning to diversify their crop and harvest the wind.  In his MSc (Diplom) he measured and modelled the wake of a wind turbine in a wind farm (awarded 1992) and then co-founded the first consultancy ProPlanEn GbR which operated until 1994.

Focus on wind energy research 1995-1998:

PhD research on voltage fluctuations caused by groups of wind turbines at the Centre for Renewable Energy Systems Technology (CREST), Department of Electrical and Electronic Engineering, Loughborough University, United Kingdom.  Analysing wind measurements and production data from several wind farms - PhD awarded in 2000.

Global wind energy industry experience: 1998-2015 

After joining Garrad Hassan / GL Garrad Hassan / DNV GL he worked as consultant on large and small wind energy projects, onshore and offshore and strategic studies, for clients and projects around the globe.  As manager he was responsible for the development, support, training and sales of the world class wind farm design software WindFarmer.

ProPlanEn - wind energy advisory - since 2015

ProPlanEn Ltd was re-established in the UK to deliver first class consultancy services globally.

ProPlanEn GmbH was established in Germany to better serve the needs of our German clients.  

With roots in both Germany and the United Kingdom, ProPlanEn serves the international market.

We are proud to help you

With decades of experience our staff are committed to providing first class independent advisory services and products. We provide technical assistance throughout the entire project lifecycle and support our clients with capacity building, software tools and advice. ProPlanEn conducts research and development to further the availability of clean, affordable and predictable wind power. 

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