1                                            Introduction

1.1                                     Background

The Hongkong Electric Company Ltd (hereinafter referred to as HK Electric), is proposing the development of an offshore wind farm in the Hong Kong SAR.  The project will produce around 100 MW of electricity, which will be supplied directly to the HK Electric grid network to help meet the HKSAR Government commitments to renewable energy generation and reduction in greenhouse gas emissions. 

The following elements of the Project are classified as Designated Projects under the Environmental Impact Assessment Ordinance (Cap. 499) (EIAO):

·           Schedule 2, Part I, Item D.1. – Public Utility Electricity Power Plant.

This report is prepared by ERM-Hong Kong, Ltd (ERM) in accordance with EIA Study Brief (No. ESB-151/2006) and the Technical Memorandum of the Environmental Impact Assessment Process (EIAO-TM).

1.2                                     Purpose of the EIA

This EIA Report addresses the key environmental issues associated with the construction and operation of the proposed wind farm and addresses the detailed requirements of the EIA Study Brief.  This information will contribute to decisions by the Director of the Environmental Protection Department on:

·            The overall acceptability of any adverse environmental consequences that could arise as a result of the Project;

·            The conditions and requirements for the detailed design, construction and operation of the Project to mitigate against any adverse environmental consequences; and

·            The acceptability of residual impacts after the proposed mitigation measures are implemented.

As specified by the EIA Study Brief, the EIA addresses the key environmental issues associated the construction and operation of the wind farm.

1.3                                     Project History

As a primary supplier of electricity in Hong Kong, HK Electric has committed to promoting the development of renewable sources of energy.  As part of this commitment, HK Electric pioneered the development of wind power in Hong Kong with the development of the first grid-connected 800kW wind farm on Lamma IslandLamma Winds” in February 2006. 

In order to determine the feasibility for the development of an offshore wind farm in Hong Kong, a Site Selection Study was undertaken by ERM in 2008 to inform the identification of a preferred site for development of a 100MW offshore wind farm.  The main objective of the exercise was to identify the environmental, physical and planning/social constraints associated with siting the offshore wind farm and identify the most appropriate location for the wind farm.  In particular, the exercise was undertaken to avoid and reduce the potential environmental impacts on sensitive areas in line with the Study Brief requirements.  The key findings of the Site Selection Study presented in Section 3 of this EIA Report.

1.4                                     Site Location

The wind farm and cable route are located in the waters between Lamma Island and Cheung Chau lying adjacent to the Southwest Lamma Channel. The closest distance of the site to land is approximately 3.5 km to Lamma Island.  The water depth at the site ranges from -18 to -23mPD.  The proposed area for development has been developed to avoid main shipping routes, key nature conservation sensitivities and existing pipeline infrastructure buried in the seabed (see Section 3).  The proposed cable route will run from the north of the site and connect to the Lamma Power Station Extension as shown in Figure 1.1.

1.5                                     The Scoping of Environmental Issues

The potential environmental impacts which may arise from the construction and operation of the wind farm have been identified and discussed in the Project Profile for this Project ([1]).  The specific scope for the EIA is presented in Clause 3.2 of the EIA Study Brief.

1.6                                     Structure of this Report

Following this introductory section, the remainder of this EIA Report is arranged as follows:

Section 2    This section discussed the need for the development of an offshore wind farm in Hong Kong.  This section also introduces some of the main components of an offshore wind farm.

Section 3    This section of the EIA report presents the findings of assessments considering alternative sites for the offshore wind farm in Hong Kong Waters. 

Section 4    This section provides a discussion of the design and construction options that have been considered.

Section 5    Provides a description of the Project highlighting the key infrastructure to be constructed, the timeline for implementing the Project and the operational activities.  This section forms the basis of the technical assessments presented in Sections 6 – 15 below.

Section 6    Details the assessment of impacts to water quality sensitive receivers arising from the construction and operation of the wind farm. 

Section 7    Presents the waste management implications from construction and operation of the wind farm. 

Section 8    Details the assessment of impacts to terrestrial ecological resources arising from the construction and operation of the wind farm. 

Section 9    Presents details of an assessment of impacts from the construction and operation of the wind farm to marine ecological resources. 

Section 10  Details the assessment of impacts to fisheries resources and fishing operations arising from the construction and operation of the wind farm. 

Section 11  Presents the details of an assessment of impacts from the construction and operation of the wind farm to landscape and visual sensitive receivers. 

Section 12  Details the assessment of impacts from the construction and operation of the wind farm to cultural heritage resources. 

Section 13  Presents a summary of the environmental outcomes of the EIA.

Section 14  Introduces a summary of the environmental monitoring and audit (EM&A) measures for the Project.

Section 15  Presents the conclusions of the EIA.



([1])     HK Electric Ltd 2006. Project Profile. Development of a 100MW Offshore Wind Farm In Hong Kong. Ref: PD/900/00/00