The University of Sheffield recently interviewed me regarding my activities since doing my PhD at the Department of Mechanical Engineering, which I completed in 2007. The resulting article has just been published in Issue 15 of MechEngNews!
In my previous job, I was responsible for building up the Application Center for Wind Energy Field Measurements at Fraunhofer Institute for Wind Energy and Energy Systems (IWES) in Bremerhaven, Germany. This nice video made by the Fraunhofer Society shows what I was up to:
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.
Die Schweizer Vereinigung der Ingenieurinnen (SVIN) veranstaltet mit mir am 19.10.2017 den 6. SVIN Feierabendworkshop "Die Geheimnisse der Windenergie" - alle Frauen, die sich für das Thema interessieren, sind herzlich eingeladen!
Check out my talk at the engineering careers day at the Messe Zurich on Tuesday, Nov. 17th, 2017!
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.
The online magazine Resource Global Network magazine has just published an interesting issue on wind energy: "Where next for wind energy?".
Starting on page 60 you'll find an article written by me titled "A rough guide to annual energy production estimations for wind energy investors" - hope you enjoy it!
Send me your MISPLACED WIND ENERGY IMAGES by August 31st and the best one wins a FREE one-hour on-line consultancy session with me!
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.
I'm very pleased that 58% of Swiss voters said YES to the Energiestrategie 2050 yesterday! This does not mean, of course, that all the wind projects on the waiting list will suddenly be able to be built, but at least it shows that the country is ready to go in the right direction. Great news!
What does this mean for wind energy?
I have written this article because many news articles, statements or reports I have recently read about wind energy involves the author confusing energy (kWh) and power (kW) and thus undermining the message they are trying to put across. Actually I totally understand this confusion – because, quite simply, the topic IS confusing. I’ll explain why here.
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!