Nice wind turbine in Croatia

Thanks to Ivan Juretic for these lovely pictures of the wind turbine he built and installed in the mountains of Croatia.  I like the style of the tail stops. They are simple and slick.

The 24V system details:
2.4 m turbine(connected directly to the battery)
10 PV panels rated power 280 W (connected directly to the battery)
2 forklift truck batteries 12V 120 Ah (to be expanded later),
Victron inverter

2 x TS60 diversion load controllers
2 x temperatures sensors for battery
4 x 1.0 ohm 1000W resistors

AC diversion circuits (using tristar follower):
Under floor heating wires 220 V 2x 500 W
and water heater 220V 2000W 110 lit.

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2F wind turbine features on German TV show

Jonathan was on TV with his grid-connected 2F turbine at the Austrian small wind test field in Lichtenegg

You can watch the TV show online here.

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Workshop in Austria

In Vienna, In German language, With Jonathan Schreiber on 12-14th October and 19-21 October
Cost 375€

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Tripalium celebrate ten years of turbine building



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Workshops in Argentina

Here is the latest wind turbine workshop by 500rpm in Argentina.

Evento que se celebrará a la hora, en la fecha y ubicación siguientes:

Sábado, 25 de agosto de 2018 a las 09:00

– hasta –

Domingo, 26 de agosto de 2018 a las 18:00 (ART)

Maestro M. Lopez esquina Cruz Roja, AVEIT, Córdoba capital

Maestro M. Lopez esquina Cruz Roja


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My windmill and my house on drone video

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Powerspout documents free to download

Much of my time these days is spent helping people with microhydro projects.  I love it.  As well as answering emails and phone-calls, I’ve been spending a lot of time helping with the PowerSpout free document library.

Click the links to view the documents.  Then click the download symbol to a the top of the screen to download them.

When planning your system, these ones could help you:

You can estimate your site’s generation potential, and even design the whole system painlessly using the online Advanced Calculator Tool. To get the best out of it please read the Hydro design and calculator manual first.

Lots of guides to off-grid system design:

There are lots more documents in the Index.  I hope you find them useful. If you aren’t sure about anything just drop me an email and I will help.

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More free design documents from Adriaan Kragten

Adriaan writes

Dear Hugh

I am 71 years old now and in December 2017 I have ended the commercial activities for my engineering office Kragten Design. But I am still active and my website: will be maintained as long as possible. In the first half year of 2018 I have written five new free public KD-reports. Four of these reports give rotor calculations. At the menu “News” on my website you find a short description of the content of each report. At the top of the menu “KD-reports” there is the folder: “List free public KD-reports” and the folder “Sequence of KD-reports for self-study” which, I think, will be of great help for someone who wants to design a wind turbine.

Adriaan Kragten

Thanks Adriaan.  This is a wonderful resource for students of wind turbine design.  Here is a chart from KD35 showing the relationship between conversion “efficiency” and drag/lift ratio, over a range of tip speed ratios:

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Off-grid house for sale

My friend Jamie is moving on from his off-grid house so I am posting details. This house is powered by a PowerSpout turbine and a PV array.

Knoydart, Mallaig, PH41 4PL
Offers Over

“No 2 Doune is in a small cluster of houses, one of four private dwellings, overlooking Doune Bay on the Knoydart peninsula. The house is in a spectacular setting, positioned against the hillside and with stunning views over the sheltered bay and the Sound of Sleat to Skye. ” More here.

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6-day-workshop for a 2F HP Turbine from 23rd to 38th June in Lörrach, Germany

ERNI e.V., together with the Dieter-Kaltenbach-Stiftung conduct a 6-day-workshop for a 2F HP Turbine from 23rd to 38th June in Lörrach, Germany.

Application is available here:

Costs: 400€ for all 6 days

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