New to wind energy? Transform yourself into a wind energy expert in five steps – part 2 of 5!

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New to wind energy? Transform yourself into a wind energy expert in five steps – part 2 of 5!

In my opinion, there are five key technical concepts that are essential for people working in the wind energy industry to understand. These are: 1. The physical limits of wind turbine performance; 2. Tip speed ratio and optimum performance; 3. The physical limits of wind turbine dimensions; 4. Loads and fatigue; 5. Performance indicators for wind energy. I am introducing each of these concepts in my next few blog articles. Last time I talked about the first concept – the physical limits of wind turbine performance. Today I’m going to talk about the second concept – tip speed ratio and optimum performance.

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The top five wind energy research and innovation topics that are being talked about in Europe right now

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The top five wind energy research and innovation topics that are being talked about in Europe right now

As part of my activities at HSR, last week I attended the Research and Innovation Workshop of ETIP Wind, the European Technology & Innovation Platform on Wind Energy. These are the top five topics that are being talked about right now: 1. Open access data, 2. Digitalisation, 3. The "mindful" wind turbine, 4. The next generation 20 MW offshore floating wind turbine and 5. Grid integration and stability of power system

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New position at HSR in Rapperswil, Switzerland

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New position at HSR in Rapperswil, Switzerland

I am pleased to announce that as of January 8th, 2018, I shall be working on wind energy projects as a part-time (40%) employee at the Institute for Energy Technology at the Hochschule für Technik Rapperswil (HSR), part of the Fachhochschule Ostschweiz in Switzerland!

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New to wind energy? Transform yourself into a wind energy expert in five steps – part 1 of 5!

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New to wind energy? Transform yourself into a wind energy expert in five steps – part 1 of 5!

In my opinion, there are five key technical concepts that are essential for people working in the wind energy industry to understand. These are:

1. The physical limits of wind turbine performance

2. Tip speed ratio and optimum performance

3. The physical limits of wind turbine dimensions

4. Loads and fatigue

5. Performance indicators for wind energy

I shall introduce each of these concepts in my next few blog articles. Today I’m going to talk about the first concept – the physical limits of wind turbine performance.

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Annual Energy Production Part 2 - AEP estimations for investors

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Annual Energy Production Part 2 - AEP estimations for investors

This is an extended version of my recent article A rough guide to annual energy production estimations for wind energy investors published in the Resource Global Network Magazine in August 2017.

If you are involved in acquiring or investing in wind energy projects, it is crucial for you to estimate the Annual Energy Production (AEP) as accurately as possible in your business case – independently of the seller. The AEP is a key factor in the calculation of your Internal Rate of Return (IRR) - and inaccuracies on the order of 20% in AEP can make the difference between a respectable project IRR of 7% and an infeasible IRR of only 3% (see the example from TetraTech below). Furthermore, it is important for you to be able to quantify the uncertainties in the AEP estimation in order to understand the associated investment risks.

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Annual Energy Production Part 1 – making sense of nameplate capacity, capacity factor, load factor and more

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Annual Energy Production Part 1 – making sense of nameplate capacity, capacity factor, load factor and more

If you are involved in acquiring or investing in wind energy projects, it is crucial for you to estimate the Annual Energy Production (AEP) as accurately as possible in your business case – independently of the seller. The AEP is a key factor in the calculation of your Internal Rate of Return (IRR) - and small changes in AEP can lead to large changes in the project IRR. Furthermore, it is important for you to be able to quantify the uncertainties in the AEP estimation in order to understand the associated investment risks.

I’ll talk more about how AEP and the associated uncertainties can be estimated in my next article, but first it’s important to understand the relevant terms.

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Learning about the economic side of things

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Learning about the economic side of things

Last Friday I attended the REM Forum 2017, an event organised by the interesting-sounding "Good Energies Chair for Management of Renewable Energies" at the University of St. Gallen. My main goal was to meet lots of investors interested in my services, but actually I ended up learning a lot about the economics and management of renewable energies too!

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