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How to choose the best wind turbine for your site.

Posted by Graham Eastwick on 28 June 2011 at 2:40 pm

How to choose the best wind turbine for your site.

There are a wide variety of wind turbines on the market today. These split in to two main categories: horizontal axis akin to the old fashion wind mills and vertical axis turbines. Most installations use a horizontal axis, vertical axis turbines are most often found in urban environments. Below a…

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Choosing a wind turbine installer

Posted by Graham Eastwick on 19 November 2010 at 9:25 am

Choosing a wind turbine installer

If you are considering installing a small wind turbine on your property you want to want to make sure that you get the maximum financial benefit for the electricity produced. Choosing an installer that will ensure that the turbine works well is key. Here are a few things you should consider. 1. Bef…

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An introduction to community wind power

Posted by Graham Eastwick on 21 July 2010 at 9:37 am

An introduction to community wind power

The feed-in tariff has certainly had an impact on this industry and kept us busy over the last months, so it's been a while since I have blogged on this website. A number of people have asked about setting up a community wind turbine. A number of community wind farms have been set up using large …

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How to service your wind turbine

Posted by Graham Eastwick on 4 May 2010 at 10:45 am

How to service your wind turbine

Small wind turbines are designed to have a long life with very little maintenance. The actual servicing required will depend on the brand of turbine installed. Some are designed to have a 15 year service-free life. Most require a simple inspection service each year. You will need access to the tu…

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Will shadow flicker affect a wind planning application?

Posted by Graham Eastwick on 26 February 2010 at 10:20 am

Will shadow flicker affect a wind planning application?

In a recent planning application I was asked to comment on shadow flicker for a very small turbine installation. The turbine in question had a rotor diameter of only 1.7 m. Shadow flicker is caused by the blades of a wind turbine passing in front of the sun and causing an effect similar to drivin…

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Can you heat a house with a wind turbine?

Posted by Graham Eastwick on 18 December 2009 at 9:39 am

Can you heat a house with a wind turbine?

A reader has asked if it is possible to heat a house with a wind turbine. The simple answer is that it is possible, but it's unlikely to be the best solution. Heating demand depends on the construction of the home and the weather. A home requiring a 13kW boiler will need a maximum of 13 x 24 kWh …

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How noisy are wind turbines really?

Posted by Graham Eastwick on 2 November 2009 at 9:50 am

How noisy are wind turbines really?

When discussing noise and wind turbines it is important to be clear what size of turbine you are thinking about. The noise from large, commercial wind turbines is very different to that generated by smaller turbines installed at homes, offices and schools. The rotors on smaller turbines rotate much…

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Are roof mounted turbines any good?

Posted by Graham Eastwick on 24 September 2009 at 10:43 am

Are roof mounted turbines any good?

Roof-mounted turbines were very popular a year ago or two. However, over the last few months a couple of reports have been published that suggest building-mounted turbines may not deliver as much electricity as hoped. One of the major manufacturers has just closed and stopped supplying turbines to …

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Wind turbines: is vertical or horizontal best?

Posted by Graham Eastwick on 24 August 2009 at 12:05 pm

Wind turbines: is vertical or horizontal best?

There are two main categories of small wind turbines you will see as you travel around the UK today. Horizontal axis turbines look like traditional wind turbines and typically have two or three blades. Vertical axis turbines come in a number of designs, a spiral or some paddles blowing around in …

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Wind power trial results published

Posted by Graham Eastwick on 15 July 2009 at 9:41 am

Wind power trial results published

The results of the Energy Savings Trust wind trial were published this week. This trial monitored both the performance of building-mounted turbines and turbines mounted on free-standing poles. In line with the previously published Warwick Wind Trials the study concluded that location is the most im…

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What size and type of turbine is most suitable for my site?

Posted by Graham Eastwick on 26 June 2009 at 10:28 am

What size and type of turbine is most suitable for my site?

Choosing the best wind turbine for your site will depend on a number of factors. The first thing is to determine if you have enough wind. A national database of wind speeds is available and will give you an indication of the wind speed at your home. This can be accessed fr…

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PV systems need an efficient inverter

Posted by Graham Eastwick on 15 May 2009 at 11:07 am

PV systems need an efficient inverter

Photovoltaic (PV) cells and modules are only part of the picture when you consider the efficiency of a solar electricity generating station. Key to an effective PV system is an efficient inverter, which converts the direct current (DC) electricity produced to AC (alternating current or mains equiv…

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Support for microgenerators increased this month

Posted by Graham Eastwick on 20 April 2009 at 8:42 am

Support for microgenerators increased this month

Financial incentives for people generating electricity with photovoltaic solar panels (PV) are provided though the system of renewable obligations certificates, (commonly referred to as ROCs). All electricity providers have to buy these certificates each year, in proportion to the amount o…

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PV shipments grow as community grants dry up

Posted by Graham Eastwick on 18 March 2009 at 10:29 am

PV shipments grow as community grants dry up

Shipments of photovoltaic (PV) panels (solar electricity) are growing year on year at a rapid rate around the world. Much of this is driven by multi-MW PV farms or so called Solar Parks. These require large areas of land and are best suited to sunnier climes and places where land is more available. …

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Efficiency or cost per watt - which is most important?

Posted by Graham Eastwick on 2 March 2009 at 1:56 pm

The development of thin film photovoltaics (PV) is progressing fast. It's still not as efficient as crystalline silicone solar panels, but I have read of projects using thin film technologies from single roofs up to large “solar farms” with capacities in the region of 40 MW. Crystalline…

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Grants for Solar PV projects on community buildings

Posted by Graham Eastwick on 13 February 2009 at 9:22 am

Grants for Solar PV projects on community buildings

Grants are in the news again! The tranche of cash recently added to the Low Carbon Building Programme phase 2 looks likely to be exhausted towards the end of this month. If you have a community project that requires funding from this programme, my advice is to make sure that you get the application …

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Optimising solar pv siting

Posted by Graham Eastwick on 28 January 2009 at 8:34 am

Optimising solar pv siting

It’s obvious that solar PV systems need as much sunlight as possible – so the ideal is to position them at about 37 degrees to the horizontal (in the UK) and facing due South. Even better, if you can afford one, are tracker systems that ensure the modules follow the sun through the sky – altho…

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Solar panels are flexible and easy

Posted by Graham Eastwick on 9 January 2009 at 8:35 am

Solar panels are flexible and easy

Solar PV (photovoltaic) is a great technology because it is so flexible and easy to manage. In most cases, once you have fitted it and connected to the grid you can forget about it, and watch your carbon emissions and energy costs fall and stay down for the next 25 years or so. One of the many p…

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