Tambacounda Solar Photovolataic plant (EN version)

Tambacounda Solar PV plant – 50MWc/45MWh

Serengeti Energy, is developing, building and operating small to medium scale renewable power projects in Sub-Saharan Africa with a focus on small hydro, solar PV, wind and biomass energy.

Serengeti Energy is committed to act in accordance with internationally recognized environment and social standards; and to ensure effective Environmental & Social Assessment and management practices in all its activities and investments.

Serengeti Energy's Health and Safety philosophy is that all incidents and accidents are preventable and we are committed to strive towards zero incidents and injuries when executing our work. This is applicable to all Serengeti Energy employees, Contractors, Consultants and other third-party service providers.

Serengeti Energy plans to engage a Contractor to carry out feasibility studies for the construction
of a 50MWp solar power plant with 45MWh battery storage in Tambacounda, Senegal.

Topographic Study

• Establishment of horizontal and vertical survey control for PV Area
• Establishment of horizontal and vertical survey for the main access Road
• Establishment of horizontal and vertical survey for Senelec substation and existing building
• Establishment of horizontal and vertical survey for 225KV existing substation
• Installation of benchmarks on the Site
• Gathering ortho-rectified images if necessary
• Bathymetric survey of the river crossings if applicable
• Survey report and survey drawings

The report includes following items:

• Introduction
• General description of the scope of work
• Geodetic reference system

• Related regulations, codes and standards
• Detailed description of the executed works
• Data processing protocols
• QA/QC methods and results
• Location sketches and coordinates of the control network benchmarks
• Coordinates of all relevant points (intersections, crossings, etc.)

Geotechnical Survey

The survey will be on line with G2 AVP mission as defined by the standard NF P 94-500 of November 2013. The geotechnical investigations provides technical notes giving the execution methods used for geotechnical construction.

The main objectives of the survey are listed below:

• Provide a location map of boreholes with coordinates
• Determine the nature of the soil on site
• Realize laboratory tests on the samples
• Identify geotechnical risks
• Identify the water level
• Analyze the foundations to adopt for different works with the corresponding characteristics (foundation’s type, embedded depth, settlements estimate …)

Pull-Out Test

• Location and process, geological data
• Surveys, field work
• Evaluation of soils present
• Basic data used for calculations
• Other indications
• Information for the evaluation of calculated depths
• Information on soil chemical conditions
• Information on driving steel profiles
• Information on installing inverters
• Information on construction site area
• Root and stump information

Geotechnical Investigations

• 30 deep trial pits (3.0-m depth)
• Visually classifying of material within five existing mined pits
• 30 Conducting Dynamic Cone Penetration tests
• 10 core drillings ( 6 m depth)
• 4 Pressuremeter tests (6 m depth)
• Collecting of bulk samples
• 14 Conducting height soil resistivity tests
• 14 Thermal resistivity

Laboratory testing of select bulk samples

• Atterberg Limits
• Sieve Analysis
• Sulphate Content
• Chloride Content
• pH value

Preparing report to summarize the site conditions, materials encountered, and field and
laboratory test results.

Hydrogeological Studies

The hydrogeological mission is a documentary study and on-site observations. It concludes with the provision of a report.

Site preliminary study:

• Bibliographic survey 
• Field visit

Investigations results:

• Geological,
• Hydraulic
• Potentially hydrogeological and vegetation observations

Analysis and synthesis of the geological and hydrogeological context of the sites and its
influence on the project:

• Description of the geological background;
• Description and analysis of the hydrological, hydraulic and hydrogeological system;
• Project definition implementation constraints;
• Mapping of ideal environment to implement of the project;
• Project adjustments to the sites
• Specific recommendations for project design
• Any additions to be included in subsequent missions, in order to reduce the uncertainties and the still existing geological risks.