Shelek 50 MW Wind Power Project
The European Bank for Reconstruction and Development (EBRD) and the Asian Development Bank (ADB) are considering providing finance to Access-Power LLP (the Company) for the construction and operation of the 50 MW wind power plant (WPP), located 37 km east Shelek town in Enbekshikazakh district, Almaty region (the Project). The WPP operation will contribute to the Kazakhstan’s implementation of the Green Economy concept by reducing the country input to global warming, dependency on fossil fuel and improving power supply reliability.
Figure 1. Map showing location of the wind farm from Shelek
EBRD and ADB have assigned the Category B to the project. The ESIA reports present the Project in order to allow all stakeholders to understand the benefits, impacts and measures planned to reduce the identified impacts and to bring the Project in compliance with the EBRD Environmental and Social Policy.
With its substation, switchgear, control room and turbines the WPP will occupy 308ha of Enbekshikazakh district lands. Twenty (20) 100 m hub height towers with Envision 2.5 MW turbines will hold 64.5 m long blades (making up a rotor diameter of 131.2 m) that will generate power from 3 m/s wind speed and come to a halt at above 20 m/s. Nearly 16.7 km of 35kV alternated current cable will be laid underground between the turbines and the 0.4/35/110kV substation. The WPP will be connected via 17.8 km 110 kV overhead line to the existing 110 kV KEGOC powerline.
The oversize parts will be delivered by transportation contractors to Khorgos from Tianjin plant 3,860 km away along the 4 lane motorways. Then it will be taken 800km to the site along G30, A353 and R21 four-lane motorways. These points are also connected with the railway but possibility of the railway use for oversize parts has not been explored yet. The Company plans to commission transportation to a qualified contractor that will survey the transportation route. Examination of the satellite images suggest that the route does not enter the settlements does not have two lane segments, sharp turns, steep rises and large infrastructure to be altered. The road police will escort the trailers. The main crane is likely to be sources by the EPC contractor from abroad.
The construction is planned to last 12 months. Around 200 workers are expected to be involved in this part of construction Steel wire carcass tying is expected to be conducted in day time only but to keep up with the work schedule night work with conversion to three 8-hour shifts may be required. Concrete filling will be conducted throughout the clock.
Turbines assembling will start at the end of the cold period and be conducted by 50 workers. One turbine will be erected at a time which is expected to take 3 days. The work will stop in high wind and at night.
The plant operation will be fully automatic controlled from the control room at the substation via SCADA. Around 15 workers will be involved in the operation and maintenance. The non-skilled workers that can be employed locally will consist of 2-4 guards and a cleaner. They will be provided with hygienic facilities with an underground septic tank emptied via a tank truck into the Shelek untreated sewage lagoon.
In high wind the blades will be turned to prevent uncontrolled spinning with the following gearbox overheating fire or blades disconnection. The blades do not have means of ice formation prevention on them due to expected low risk of such event. Security lighting will be kept through the night at the fenced area, along the passages and at each turbine pad.
Both step-up transformers will have oil with no PCBs in it and oil dumping sinks in case of fire. The turbines are expected to operate 25 years without major repair or replacement of the towers and blades.
Shelek Wind Farm ESA
Shelek Wind Farm NTS Russian
Shelek Wind Farm NTS
Shelek Wind Farm SEP Russian
Shelek Wind Farm SEP
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