Green Global Venture

Hydro Power...How it works ?

Hydropower is power derived from the energy of falling water or fast running water, which may be harnessed for useful purposes. Since ancient times, hydropower from many kinds of watermills has been used as a renewable energy source for irrigation and the operation of various mechanical devices, such as gristmills, sawmills, textile mills, trip hammers, dock cranes, domestic lifts, and ore mills. A trompe, which produces compressed air from falling water, is sometimes used to power other machinery at a distance.

 

Types of Hydropower:

Hydropower is used primarily to generate electricity. Broad categories include:

  • Conventional hydroelectric, referring to hydroelectric dams.
  • Run-of-the-river hydroelectricity, which captures the kinetic energy in rivers or streams, without a large reservoir and sometimes without the use of dams.
  • Small hydro projects are 10 megawatts or less and often have no artificial reservoirs.
  • Micro hydro projects provide a few kilowatts to a few hundred kilowatts to isolated homes, villages, or small industries.
  • Conduit hydroelectricity projects utilize water which has already been diverted for use elsewhere; in a municipal water system, for example.
  • Pumped-storage hydroelectricity stores water pumped uphill into reservoirs during periods of low demand to be released for generation when demand is high or system generation is low.

 

 

 

 

 

How to evaluate the power capacity of each of our locations?


A hydropower resource can be evaluated by its available power. Power is a function of the hydraulic head and rate of fluid flow. The head is the energy per unit weight (or unit mass) of water. The static head is proportional to the difference in height through which the water falls. Dynamic head is related to the velocity of moving water. Each unit of water can do an amount of work equal to its weight times the head.

The power available from falling water can be calculated from the flow rate and density of water, the height of fall, and the local acceleration due to gravity.

 

 

Our Power Plant & Projects

Our projects consists of hydro power plant from 1 until 50 MW.

It means Mini Hydro projects from 1 MW until 10 MW and Hydro Projects above 10 MW.

 

Our Projects capacities are calculated thanks to our Engineering Department, depending on various factor such as Debit, High between two points of the river, Distance between those points, Deep of the river...

Hydro Power Sustainability...

As with other forms of economic activity, hydropower projects can have both a positive and a negative environmental and social impact, because the construction of a dam and power plant, along with the impounding of a reservoir, creates certain social and physical changes.

A number of tools have been developed to assist projects.

Most new hydropower project must undergo an Environmental and Social Impact Assessment. This provides a base line understand of the pre project conditions, estimates potential impacts and puts in place management plans to avoid, mitigate, or compensate for impacts.

The Hydropower Sustainability Assessment Protocol is another tool which can be used to promote and guide more sustainable hydropower projects. It is a methodology used to audit the performance of a hydropower project across more than twenty environmental, social, technical and economic topics. A Protocol assessment provides a rapid sustainability health check. It does not replace an environmental and social impact assessment (ESIA), which takes place over a much longer period of time, usually as a mandatory regulatory requirement.

The World Commission on Dams final report describes a framework for planning water and energy projects that is intended to protect dam-affected people and the environment, and ensure that the benefits from dams are more equitably distributed.

IFC's Environmental and Social Performance Standards define IFC clients' responsibilities for managing their environmental and social risks.

The World Bank’s safeguard policies are used by the Bank to help identify, avoid, and minimize harms to people and the environment caused by investment projects.