Partnerships for Assessment Drilling and Development of Geothermal Resources in St. Vincent and the Grenadines Presented by: Melissa A. De Freitas Energy Unit Ministry of National Security, Air and Sea Port Development St. Vincent and the Grenadines
Dec 22, 2015
Partnerships for Assessment Drilling and Development of Geothermal Resources in St. Vincent and the Grenadines
Presented by: Melissa A. De FreitasEnergy UnitMinistry of National Security, Air and Sea Port DevelopmentSt. Vincent and the Grenadines
Introduction
• Population: 109, 373 (2013)
• Energy Profile:- Installed Capacity: 39 MW- Base Load: 12 MW- Peak Load: 21 MW
Year Institution Results
1991 Geothermica Italiana
Fumaroles appear to be linked to recent volcanic manifestations, rather than to a deep hydrothermal system. It is therefore recommended that no further geothermal exploratory work be made on the island of St. Vincent.
1996 Gerald W. Huttrer Geothermal potential is credible due to recent volcanism displayed by the La Soufriére volcano. Existence of a heat source is evidenced by fumaroles within the crater as well as by hot springs discovered in the Walibou River.
1996 GeothermEX Inc. Comprehensive geological and geochemical surveys support the theory that a geothermal resource is present on the Island of St. Vincent. Temperatures may range from 150-175 oC.
1998 Caribbean Power, St. Vincent Ltd.(Dames & Moore)
Geochemical sampling confirms a deep reservoir-derived fluid. Resisitivity data (CSAMT) reveal low resistivity areas on the southwest flank of the La Soufriére volcano which support the indications of an active geothermal system.
1999 G.E.A St. Vincent has the potential to support 112 MWe .
2011 GeothermEX Inc. GeothermEX supports the previous studies indicating a geothermal resource potential.
2012 NREL NREL is investigating a distributed system utilizing directional well drilling and small modular power generation units
2013 Reykjavík Geothermal &
Emera Inc.
ON GOING
History of Geothermal Development in St. Vincent & the Grenadines
Risk Details
Financial - High upfront cost- Challenging Terrain- Geo-hazards (slope instability, flash floods,
seismic events)- SVG has a small electric load demand of 21
MW
Regulatory - No independent regulator- Lack of a legal framework
Resource/ Exploratory
- Dry/Unproductive wells- Over-sizing of power plant due to over-estimation of
recource.
SVG Geothermal Challenges
The Government of SVG (GoSVG) entered into a Memorandum of Understanding (MOU) in January 2013 with Reykjavík Geothermal (RG) and Emera Caribbean Inc.
The signed Letter of Intent (LOI) sets the ownership structure for the proposed Geothermal Company as well as proposes an equity partnership between Emera, RG and GoSVG.
Technical support has been given by the Clinton Climate Initiative (CCI), JICA and New Zealand.
Forming Partnerships
Stakeholder engagement will build broad support for the project and understanding of geothermal energy as well as to manage public expectations
Communication will be open and transparent for each phase of the project and as such all stakeholders will receive information via the most appropriate matters.
Stakeholder Engagement
Technical Results
Above: New and old craters of the La Soufriére volcano
Below: Fumarole on the dome inside the new crater.
Geochemistry:
Geochemical analysis of thermal manifestations have indicated the presence of a high enthalpy resource located at the base of the volcano.
A conservative estimate of temperature lies in the range of 200 – 300 oC, although it may in fact be higher.
Technical Results
Geophysics:
In October 2013, a team from RG assisted by local workers, have carried out geophysical surface explorations on the western and eastern flanks of the volcano.
Several Magnetotelluric (MT) and TEM surveys were carried out to determine the exact potential of the geothermal resource and the boundaries of its reservoir. This will assist in to identifying suitable area(s) for drilling and ultimately determine whether the project is feasible.
Early indications yielded positive results. However, there are some gaps in the data in areas that were inaccessible by foot.
Technical Results
Technical Results
The GoSVG is currently seeking financing to lower the project’s total cost.-ADFD: $15 Mil-JICA-Development Bank
Legal Framework- Geothermal Bill will be passed in Parliament in mid 2015
Next Steps for Development
Environmental and Social Impact Assessment- baseline study completed
Community Engagement- Emera/RG have already untaken meetings with residents in the north of SVG. Plans are being prepared for a third round meetings
Business Model- will be presented at the end of June 2015.
Next Steps for Development
Test Wells- RG/Emera are presently finalizing the assessment of the drill site.-Drill plan and conceptual well design has been prepared-Request for Proposals document is being prepared to issue to suitable qualified drilling contractors.
Construction of a 10-15 MW geothermal plant
Next Steps for Development