Alpen Steel | Renewable Energy

~ The Step Guide Of MiniHYdro

Mini-hydro: a step-by-step guide

1.0  Mini-hydro: a step-by-step guide

 

This Guide is designed to assist anyone in the UK who is planning to develop a small-scale hydro-electric scheme.

 

It has been prepared by the British Hydro Association in order to support and encourage new developments in this sector.

 

The term used in this Guide will be 'Mini-hydro', which can apply to sites ranging from a tiny scheme to electrify a single home, to a few hundred kilowatts for selling into the National Grid.

 

The Guide will explain:

 

·         The basic concept of generating power from water

·         The purpose of different components of a scheme

·         The principle steps in developing a project

·         The technology involved

·         Where to go for help and sources of funding

 

This guide can also be downloaded as a single PDF file, 955 kilobytes and 31 pages in length.

 

Each section of the Guide is listed in the menu titles across the page.  You can either follow the Guide through from page to page, or pick out the topics of interest from the drop-down menus.  Each page can be printed out on A4 by selecting the printer-friendly icon in the corner of each page.

Why mini-hydro ?

Small-scale hydropower is one of the most cost-effective and reliable energy technologies to be considered for providing clean electricity generation.

 

In particular, the key advantages that small hydro has over wind, wave and solar power are:

  • A high efficiency (70 - 90%), by far the best of all energy technologies.
  • A high capacity factor (typically >50%), compared with 10% for solar and 30% for wind.
  • A high level of predictability, varying with annual rainfall patterns.
  • Slow rate of change; the output power varies only gradually from day to day (not from minute to minute).
  • It is a long-lasting and robust technology; systems can readily be engineered to last for 50 years or more.

It is also environmentally benign. Small hydro is in most cases 'run-of-river'; in other words any dam or barrage is quite small, usually just a weir,  and little or no water is stored. Therefore run-of-river installations do not have the same kinds of adverse effect on the local environment

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