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Request for Quotations

Nauru Wind Power Feasibility Study

Background:

The Pacific Islands Green House Gas Abatement through Renewable Energy Project (PIGGAREP) is a regional climate change mitigation project that was approved for funding by the Global Environment Facility (GEF) in September 2006. The project is for eleven Pacific Island Countries (PIC) – Cook Islands, Fiji, Kiribati, Nauru, Niue, Papua New Guinea, Samoa, Solomon Islands, Tonga, Tuvalu and Vanuatu with the United Nations Development Programme (UNDP) as the GEF Implementing Agency and the Secretariat of the Pacific Regional Environment Programme (SPREP) as the Implementing Partner.

The global environment and development goal of PIGGAREP is the reduction of the growth rate of greenhouse gas (GHG) emissions from the fossil fuel use in the PICs through the removal of the barriers to the widespread and cost effective use of feasible renewable energy (RE) technologies. The specific objective of the project is the promotion of the productive use of RE to reduce GHG emission by removing the major barriers to the widespread and cost-effective use of commercially viable RE technologies (RETs). PIGGAREP consists of various activities whose outputs will contribute to the removal of the major barriers to the widespread utilization of RETs. The project is expected to bring about in the PICs: (1) Increased number of successful commercial RE applications; (2) Expanded market for RET applications; (3) Enhanced institutional capacity to design, implement and monitor RE projects; (4) Availability and accessibility of financing to existing and new RE projects; (5) Strengthened legal and regulatory structures in the energy and environmental sectors; and (6) Increased awareness and knowledge on RE and RETs among key stakeholders.

Nauru is one of the participating PICs in the PIGGAREP and one of its new activities introduced into its 2008 Work Plan is a Wind Power Feasibility Study.

Quotations are therefore requested from interested parties that are willing and able to undertake the services as specified in the attached Terms of References (ToR) for the Nauru Wind Power Feasibility Study (Annex A).

Instructions to Offerors:

• The Quotation must cover all the objectives, outputs and activities as specified in the ToR
• The Quotation must include costs for professional fees, travel and per diem
• US$ only must be used in the Quotation
• The Quotation must include: i) an updated CV of the individual/s who will undertake the consultancy ii) a summary of recent work in the areas to be covered in this consultancy (including client and work produced); ii) information on availability; iii) total person days proposed for the work on the consultancy and daily rate in US$ and iv) a preliminary methodology and work plan (maximum 3 pages)
• The consultancy preferably should commence before July 2008
• The offer must be in the English language only
• The above-mentioned documents, information and requirements are mandatory and as such are required to form a complete tender. An offer will be rejected unless it is substantially responsive
• If the Quotation is received prior to the formal submission date corrections/modifications can be made up to that date
• The Quotation must be submitted in electronic format only (Word and PDF format, 1 MB max) by email to the e-mail address specified below
• The consultancy must be undertaken with field visits to Nauru. The exact number of working days will be determined subsequently between the successful Contractor, the Nauru Utility Authority and SPREP

The final working plan will be determined subsequently between the successful Contractor, the Nauru Utility Authority and PIGGAREP. Acknowledgements of the receipt of quotations will be provided by e-mail. Successful as well as unsuccessful offerors will be informed by e-mail once the evaluation and selection process are completed.

Award of Contract and Evaluation Criteria:

Quotations will be evaluated according to the following criteria:

1. Price (20%)

2. Relevant Experience in wind monitoring and wind feasibility studies in small islands environments (30%)

3. Experience with Nauru’s and / or SIDS energy and socio-economic environments (20%)
4. Methodology / Work Plan (30%)

All quotations must be addressed to:

                      The Director

                      SPREP                                            Telephone: (685) 21 929

                      PO Box 240                                     Fax:   (685) 20 231

                      Apia, Samoa                                   E-mail: SPREP@sprep.org

Deadline for the submission of quotations is 30 May 2008, Samoa time.

Contact Information:

ANNEX A

TERMS OF REFERENCE

Nauru Wind Power Feasibility Study

Background

Nauru is 100% dependent on fossil fuel for its power generation and transportation. The Strategic Action Plan for Renewable Energy in Nauru’s Energy Framework has a policy of a “10% increase in the share of renewable in the energy mix of Nauru by year 2020.” This is to be achieved through various means including the harnessing of Nauru’s wind resources.

Power Resources in Nauru

The 2004 PIREP study report for Nauru noted that as an equatorial country, Nauru has a very good solar resource. Measurements show an average of about 5.8 kWhr/m 2 /day with only small seasonal variation. Solar PV electricity generation can supplement the existing diesel generation, however, very expensive electrical storage systems must be included and the penetration of solar power into the grid is estimated to be around 15%-20% of the noon time demand.

The PIREP study noted that the wind resource is poorly known throughout Nauru. It states that a resource assessment for topside would be worth carrying out to determine the appropriateness of further development.

In 2006, WINERGY NC of New Caledonia conducted a wind mapping exercise in Nauru in an effort to quantify the available wind potential. The wind atlas that was produced showed that Nauru has a good wind regime. The study identified that the best sites for wind projects are in the Northeast where a wind project at IJUW with wind speed of up to 6 m/s at 50m which can possibly provide around 25% of the domestic demand for electricity on the island. The study also found that moderate wind speed of 5.5 m/s at 50m could be found along the eastern coast.

To further advance the wind power development in Nauru, a feasibility study of a wind power project at IJUW is to be undertaken.pe of the Study

Scope of the Study

The scope of the campaign shall be to carry out a technical and economic feasibility study of a grid connected wind power system at IJUW in Nauru so as to enable the Nauru Government and related agencies to decide on whether to proceed to the installation of a wind farm and/or to identify and secure funding for the project.

Specific

Specifically the study shall be in three distinct but related phases:

• Confirmation of the wind potential and the identification of the exact sites to be monitored by computer simulation using WA s P and/or Wind Map;

• Validation of the wind power potential through a reliable and precise monitoring station established for a period of not less than 12 months; and

• Determination of the technical and economic feasibility of a wind/diesel or wind/solar/diesel hybrid power system.

Based on the results of Phase 1, the PIGGAREP in consultation with the Nauru Government, shall give the go ahead to the Consultant to proceed with Phase 2. The results of Phase 2 shall determine whether to proceed to Phase 3.

i)Confirmation of the wind potential at IJUW on the North East and the identification of the site to be monitored by computer simulation using WA s P and/or Wind Map

Confirmation of the wind potential and the identification of the site to be monitored by computer simulation using WA s P and/or Wind Map. This computer simulation can be carried out as a desk study outside Nauru.

ii)Validation of the wind power potential through a reliable and precise monitoring station established for a period of not less than 12 months

This shall only be carried out if the computer simulation confirms that the average wind speed at IJUW on the North East of Nauru is greater than or equal to 6 m/s at 50 m. For this phase to begin, the Nauru government must get some understanding with the landowner on the possible future use of their land for the monitoring and the installation of a wind farm.

The monitoring will be for a period of not less than 12 months in order to correctly record the variability and intensity of the wind at the selected site. A 40-meter high mast will be used and measurements at both 40m and 30m levels will be recorded.

The monitoring will involve, but not limited to the following key steps:

Supply and Installation of a 40-meter high wind measurement mast

The data to be measured and collected will include but not limited to:

• Instantaneous Wind Speed and Direction (sampling frequency of 0.5 Hz) averaging every 10 minutes,
• Maximum Wind Speed recorded every 10 minutes,
• Turbulence intensity calculated every 10 minutes (Standard deviation of Wind Speed on 300 ‘2 seconds’ records)

3 Anemometers will be installed at the mast for Wind Speed measurement at 40m, 40m (back up) and 30m

2 Wind Vanes for Wind Direction measurement at 40m and 30m.

The mast will be delivered with a data logger that ensures the security, quality and reliability of the data recorded. It must have a storage capacity of at least a month or more.

Long-term reference measurement station

A reference long-term measurement station (ARM or airport station, etc) must be identified in order to correlate the site measurements in the long term. This reference station must be able to produce detailed information such as the wind speed and direction every hour or every three hours) during the comparison period (not less than 12 months). It must be able to provide general information like the monthly average for the last 10 years or earlier.

The choice of the reference station must take into account the quantity and quality of data required and the distance between the reference station and the studied site.

Local Project Coordinator

A local project coordinator from the Nauru Utilities Authority will work together with the Consultant on the following areas:

• taking care of the clearance of equipments and materials imported for the monitoring
• transporting and stocking the mast until its installation on site (about 900kg total)
• obtaining any necessary authorization for the installation of one 40m mast (from the owner of the property and/or from local authorities)
• transporting the mast and instruments to the identified site
• helping with the mast installation especially with the supply of cement for the basement and anchorage if required (it depends on the kind of soil)
• in charge of liaising between local authorities and the external consultants. This will include operating the data logger and controlling the correct functioning of the entire measurement equipment.

The Consultant shall provide and install a wind monitoring station at IJUW, Nauru and to dismantle and remove its wind monitoring station from the island at the end of the monitoring.

The Consultant shall provide training to the staff of the NUA in the computer simulation, installation of the monitoring station, data retrieval and anemometer calibration, etc.

iii) Determination of the technical and economic feasibility of a wind /diesel or wind/solar/diesel hybrid power system

Based on a confirmation of the wind potential at IJUW, the PIGGAREP in consultation with the Nauru government shall then give the go ahead to proceed to carry out the technical and economic feasibility study. This Consultancy (same or separate) shall be required to carry out, but not restricted, to the following activities:

Technical

• Study of the existing diesel plant to draw an electrical daily load curve for a working day and a weekend day.
• Analysis of the electrical demand during the past 6 years to evaluate future growing trends. Electricity demand and load forecast
• Choice of the installed wind farm capacity in accordance with the present recorded and future estimated output
• Wind resources and physical characteristics-data, extrapolation, analyses, statistics
• Wind turbine structural loading and safety standards requirements
• Wind turbine – types, sizes and design
• Wind farm sizing and power system configuration
• Wind farm layout
• Wind farm energy production estimation / solar array energy production estimate
• Electric grid connection – standards and requirements
• Description of the civil works and grid connections works
• Power system operation and control system communication, if any
• Environmental impact – visual, noise, wildlife, fuel savings, emissions (CO 2 , NO X , SO 2 )
• Physical planning, existing and new requirements for the site and surrounding land
• Requirements in general nearby installations (water tanks, agricultural fields, phosphate mining, etc)
• Electromagnetic interference
• Climate in general – temperature, humidity, etc … and its impact on design requirements eg. Regarding corrosion, protection, cooling, tropicalisation, etc.
• Soil conditions
• Access to site. Evaluation of logistical constraints
• Operation and maintenance. Description of minimum training level or competence for operation and maintenance of the wind generator
• Prepare a term of reference for quotations from wind turbine manufacturers / distributors for a turnkey wind farm.

From a technical point of view, the hybrid power system would be as follows: The wind will have to be continuously adjusted in order to optimise the wind energy resource while maintaining the diesel generators above their minimum load (operating) conditions. The diesel genset ensures grid stability voltage and frequency.

Economic / Financial

• Price of the turbine landed in Nauru
• Price of required civil works
• Grid connection costs
• Installation costs
• Training costs of NUA engineers
• Operation and maintenance
• Land rental for the life of the project
• Access the social, environment and financial benefits of the project, including potential CDM benefits
• Assess the production costs per kWh orting

Reporting

The Consultant shall produce three separate reports [both electronic and hard covers] covering the areas identified in the Scope of the Study.

In particular:

• the result of the computer simulation
• the result of the wind monitoring
• the technical and economic feasibility study

Others

There may be a possibility of getting other interested Pacific Islanders involved in the training proposed for the NUA staff.

The wind monitoring equipment [including the tower and the anemometer] is a property of the Consultant and to be disposed at the pleasure of the Consultant at the end of the project.