Wind Energy - Environmental Impact Assessment (EIA)

Work in progress

see: GTZ 2009: Development of Implementation Strategies for a Regional Regulatory Action Plan (RRAP) for the Western Cape. http://www.gtz.de/de/dokumente/gtz2009-en-regional-regulatory-action-plan-western-cape.pdf

Environmental Impact Assessment pp. 26

EIA triggers

A simple schematic of the EIA process is shown in the diagram below. From the diagram it can be seen that there are effectively two types of EIA – one in which the project requires only a ‘basic assessment’ for consideration by the competent authority; and the other more comprehensive process in which the project proponent first prepares a scoping report, outlining the required scope
of environmental analysis, for consideration by the competent authority. After the authority is satisfied with the scoping report the project proponent then proceeds to the full environmental impact report.

Basic assessment processes

There are a number of potential project activities arising from a renewable energy project that could are included in the basic assessment listed activities. These include the following activites:
The construction of facilities or infrastructure, including associated structures or infrastructure, for:

• The generation of electricity where the electricity output is more than 10 MW but less than 20 MW
• The transmission and distribution of electricity above ground with a capacity of more than 33 kilovolts and less than 120 kilovolts
• Any purpose in the one in ten year flood line of a river or stream, or within 32 metres from the bank of a river or stream where the flood line is unknown, excluding purposes associated with existing residential use
• The off-stream storage of water, including dams and reservoirs, with a capacity of 50 000 cubic metres or more
• Construction or earth moving activities in the sea or within 100 metres inland of the high- water mark of the sea, in respect of buildings; or infrastructure

The construction of masts of any material or type and of any height, including those used for telecommunication broadcasting and radio transmission, but excluding –
(a) masts of 15 metres and lower exclusively used
(i) by radio amateurs; or
(ii) for lighting purposes
(b) flag poles; and
c) lightning conductor poles
The above examples are not exhaustive and there are certainly other activities in the government notices which developers should consider to determine whether an EIA is required. In consideration of activities requiring EIAs developers should also note that it is not only the project itself that may require an EIA but also any upgrades that may be required to infrastructure, or associated infrastructure.

Scoping / Environmental Impact Report processes

Some activities need a thorough assessment process. These are activities that due to their nature and/or extent are likely to have significant impacts that cannot easily be predicted:

The construction of facilities or infrastructure, including associated structures or infrastructure, for:

• the generation of electricity where:

o the electricity output is 20 MW or more; or
o the elements of the facility cover a combined area in excess of one hectare

• the extraction or processing of natural gas including gas from landfill sites
• the transmission and distribution of above ground electricity with a capacity of 120 kilovolts or more
  
• Any development activity, including associated structures and infrastructure, where the total area of the developed area is, or is intended to be, 20 hectares or more
• The construction of a dam where the highest part of the dam wall, as measured from the outside toe of the wall to the highest part of the wall, is 5 metres or higher or where the high-water mark of the dam covers an area of 10 hectares or more
  

The above examples are not exhaustive and there are certainly other activities in the government notices which developers should consider to determine whether an EIA is required.
What is clear is that any renewable energy generation facility greater than 10 MW will require basic assessment and those greater than 20 MW will require a full scoping report and EIR. Many projects under 10 MW will also require at least a basic assessment due to other activities associated with their construction or operation.

Description of key EIA steps

Steps	Description	time frame (example Western Cape, RSA)
Intent to apply	Where a regional Strategic Environmental Assessment is in place (as developed by the Western Cape Province) the developer should ensure that the project is consistent with the framework established by the SEA (see below for further information). Developer provides indication to the competent authority (CA) of their intent to apply for an environmental authorization

Environmental Impact Assessment - Example from Namibia

In the course of the study the possible dangers of a wind park to flora and fauna as well as
effects due to noise and shadow flicker on nearby human settlements has been looked at.
Initially, the sites selected by MME included 2 areas. Based on a site visit and the data
evaluation, 2 more areas were investigated. According to the data available it could be
concluded that environmental problems can be minimised and are acceptable. All
considered sites in Lüderitz are several kilometres away from any human settlements, so
that noise emissions would not be problematic. The effect of shadow flicker will be
calculated, however no problems are expected.
As far as the wildlife is concerned, there is a possible danger through wind parks to
migratory and resident birds in certain areas as identified in a study undertaken by the
Ministry of Environment and Tourism (MET). Therefore, only those 3 of the 4 sites which
are situated outside the danger areas were further investigated.

Source: GIZ 2000: Wind Energy Projects in Morocco and Namibia, gtz2000-en-wind-energy-projects-marocco-namibia

Portal:Wind