The company Doral Wind Energy Ltd. is the branch of Doral Energy Group that leads the group’s activities regarding wind energy.
Wind energy is a prevalent renewable energy resource, constituting the world’s leading energy resource.
Many countries such as Denmark, Spain, Portugal and Germany are leading producers of electricity from wind power, and other countries are joining them each year at a growth rate of over 20% in electricity production.
Wind facilities are the most efficient of the renewable energy facilities, and wind energy complements solar energy as a renewable energy resource. The expected increase in production volume and breakthroughs in research and development will make wind facilities even more efficient in the coming years.
Electricity production by wind turbines is a mature industry in the world, combining the advantages of efficient utilization of land resources with proven technological capability and available financial instruments for funding projects.
A wind turbine located in an area that enables it to maximize its potential (in terms of height, route and terrain), returns the initial investment in a relatively short time.
The Planning Director in the Ministry of the Interior recently approved a National Outline Plan for Wind (N.O.P. No. 10/d/12), which establishes the planning rules and procedures for approval of wind facility construction in Israel, individual turbines and wind farms.
Large Wind Turbines
Main Points of the Regularization Plan:
- On 10/10/2011 the Electricity Authority published a tariff regularization plan for electricity production by means of wind energy – large turbines.
- The scope of the regularization plan – 720 megawatts.
- Statutory planning as part of National Outline Plan N.O.P. 10/d/12.
- According to Ministry of Energy policy, February 2016, the allocation will double in order to reach the government’s objectives for 2030: 17% of production from renewable energy.
Key Elements for Project Feasibility:
- Examining the planned location of the turbines in relation to residential buildings.
- Examining the wind speed on the site, making sure it complies with the project’s minimum requirements.
- Examining the capability for transmitting electricity to the Electric Corporation for distribution.
- Coordinating the plan with the IDF and the Ministry of Defense.
- Coordinating the plan with “green” organizations, including the Nature and Parks Authority.
Doral Energy Group has the knowledge and experience for advancing the processes necessary for erecting the turbines, as well as close connections with the world’s leading turbine manufacturers.
Doral is initiating a number of projects in partnership with kibbutzim, as follows:
- Development through corporations held jointly by Doral and kibbutzim.
- Transparency in decision-making through a shared management of the joint corporation.
- In projects partnered by Doral and a number of kibbutzim – the percentages of holdings in the partnership are determined according to the number of turbines that are placed in the territory of each kibbutz.
Medium Wind Turbines
- Activities relating to the Electricity Authority regularization plan for small and medium turbines with a maximum output of 50 kW per turbine.
- According to the regularization plan, the Electric Corporation will pay a guaranteed rate of NIS 1, linked to the CPI, for each kWh produced, under a contract guaranteed for 20 years.
- Doral is in close cooperation with the world’s leading manufacturer of medium wind turbines, Northern Power, which counsels and supports the launching of projects that we promote.
more information on wind energy
Wind energy production is based on the formula of the wind speed cubed, and multiplied by the surface area of the blades. The wind’s speed, direction and nature of flow are the most important factors for producing energy with this technology.
The location of the wind facility is crucial. An additional factor is the smooth flow of the wind. Flow over and behind rough surfaces creates whirlwinds that significantly impair the energy output. The further from obstacles the wind facility is located (in terms of height and distance), the more efficient the energy production. This is true for both urban areas and open areas.
The wind speed, as mentioned, has a decisive impact on energy production. The higher the turbine is installed, the higher its chances of producing energy, whether it is a small turbine or a large one.
Masts of small turbines range from 6 to 40 m. in height.
Wind measurements are carried out by setting up a temporary mast and measuring the wind using specialized equipment for a period of 3-6 months. The masts of greater power turbines can reach 90 m. in height, and the period of measuring the wind regime can reach a duration of two years or more.
Horizontal and Vertical – Axis Turbines
Wind turbine technology is divided into two main categories: horizontal-axis turbines, and vertical-axis turbines. The total surface area utilized for converting wind energy to electricity is usually smaller in vertical-axis turbines than in horizontal-axis turbines.
Small wind facilities necessitate utilizing a total ground area of up to 40 sq.m. per facility. Aside from the efficiency in the use of the area, wind facilities enable dual use of land, using it for different needs along with operating the facility. Such uses include agriculture, storage, industry, etc., and their impact on existing uses is minimal.