Electrical Transmission Potential
Trinidad: Guyana Link and
Guyana Hydropower
(Presentation hosted by the Trinidad and Tob...
Vision for Sustainable Energy
Future
• Carilec, Trinidad, Guyana and others
envision sustainable energy future
• An electr...
HVDC Marine Cable Benefits
• Provides choice of
generation source as it
creates energy market
• Dependable
• Anticipates f...
Connecting Renewables into a Grid
• Waste to Energy
• Wind
• Geothermal
• Ocean thermal
• Biogas
• Hydropower
• Solar
• Ab...
Implications for Current Supply
• Current Trinidad fossil
generation can supply
increased load in Guyana
(mines or smelter...
Guyana Hydropower
• Guyana has up to 7000 MW of undeveloped hydropower
• Both dam and run of the river energy generation i...
Trinidad – Guyana HVDC
Marine Cable
• Proven technology
• Off the shelf converters DC to AC
• Distances long, but not brea...
ATrans-Caribbean Grid is a Clean
Development Mechanism
• Helps to remove barriers to renewable energy development
• Suppor...
Cost
• Shore to shore 450/500 km = $ 700 +/- million estimate
• Depends on: 1) global price of metals; 2) length of run;
3...
HVDC Specifics
• Depth limitations of 1,600 to 1,700 meters.
• Deepest is 5,380 feet
• A long cable goes from Eenshaven,
N...
Risks
• Results of environmental studies
still to be determined
• Route needs to be off shore
from Venezuela
• Coordinatin...
Other Benefits of Grid
• Ability to share capital costs of new conventional and
renewable energy projects
• Creates econom...
Other Benefits of Grid
• Easier shutdowns of current system (particularly
diesel) for maintenance and scheduled outages
• ...
Conclusion
• Biggest economic problem for the
Caribbean is cost of energy
• Trinidad – Guyana HVDC Marine
cable provides d...
Feasibility of Hydropower in Guyana
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Feasibility of Hydropower in Guyana

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Presentation on investing in Hydropower and the Power Cable Interconnection in Guyana, delivered at a July 10, 2013 entrepreneurial forum, hosted by the Trinidad and Tobago Chamber of Industry and Commerce.

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Feasibility of Hydropower in Guyana

  1. 1. Electrical Transmission Potential Trinidad: Guyana Link and Guyana Hydropower (Presentation hosted by the Trinidad and Tobago Chamber of Industry and Commerce, July 10, 2013) David R. Hardy, M.C.I.P, R.P.P., President, Hardy Stevenson and Associates Limited www.hardystevenson.com @hardystevenson http://hardystevenson.wordpress.com/
  2. 2. Vision for Sustainable Energy Future • Carilec, Trinidad, Guyana and others envision sustainable energy future • An electricity grid using marine cable will be able to achieve many of the sustainability goals:  Can resolve locked in power issues in Trinidad and Tobago and elsewhere  Cheaper electricity  Opportunity to diversify generation mix  Lowering of greenhouse gas emissions  Carbon credit opportunities and lowering the carbon footprint in Trinidad  Significantly improved GNP for Trinidad and Tobago and Guyana, and other connecting countries
  3. 3. HVDC Marine Cable Benefits • Provides choice of generation source as it creates energy market • Dependable • Anticipates future Caribbean grid based on marine cable • Potential future transmission interconnections to South American grid
  4. 4. Connecting Renewables into a Grid • Waste to Energy • Wind • Geothermal • Ocean thermal • Biogas • Hydropower • Solar • Ability to add renewables as part of energy mix
  5. 5. Implications for Current Supply • Current Trinidad fossil generation can supply increased load in Guyana (mines or smelter etc.) and/or can function as peaking plants • Ultimately, large Guyana hydropower projects can serve as sustainability anchor
  6. 6. Guyana Hydropower • Guyana has up to 7000 MW of undeveloped hydropower • Both dam and run of the river energy generation is possible so as to minimize environmental footprint • Turtruba Rapids Hydropower project as an example:  1976 feasibility by Moneco  2005 Pre-feasibility study completed by Hardy Stevenson finds that hydropower is indeed feasible, more work to be done
  7. 7. Trinidad – Guyana HVDC Marine Cable • Proven technology • Off the shelf converters DC to AC • Distances long, but not breaking records • Guyana Trinidad link excellent start to Caribbean grid • Many islands already using HVDC – Philippines, Hawaiian Islands
  8. 8. ATrans-Caribbean Grid is a Clean Development Mechanism • Helps to remove barriers to renewable energy development • Supports a sustainable renewable energy industry • Becomes a framework to provide mutual support for regional and national renewable energy projects
  9. 9. Cost • Shore to shore 450/500 km = $ 700 +/- million estimate • Depends on: 1) global price of metals; 2) length of run; 3) need for AC DC Converters • Feasibility study of $1-2 million • DC/AC converters at $100 m • Engineering, design, environmental studies $25 million est.
  10. 10. HVDC Specifics • Depth limitations of 1,600 to 1,700 meters. • Deepest is 5,380 feet • A long cable goes from Eenshaven, Netherlands to Feda, Norway at 500 km and 700 mw • Trinidad to Guyana is in this range • 200 meters depth and 450 to 500 km +/- • DC can carry 1.4 x more power than AC with fewer line losses
  11. 11. Risks • Results of environmental studies still to be determined • Route needs to be off shore from Venezuela • Coordinating energy and economic objectives of Guyana and TT essential • Guyana’s economic opportunities need to be demonstrated • Multi-country public consultation important • Multi-government cooperation
  12. 12. Other Benefits of Grid • Ability to share capital costs of new conventional and renewable energy projects • Creates economies of scale • Allows countries to adopt technologies suited to larger market and best generation technologies • Security of supply • Promotes energy integration • Employment generation
  13. 13. Other Benefits of Grid • Easier shutdowns of current system (particularly diesel) for maintenance and scheduled outages • Provides for shared risks and benefits • Ultimately lower net total energy cost  Would significantly lower electricity cost in Guyana based on natural gas based electricity  When electricity comes back to Trinidad as hydropower it will lower the unsubsidized cost of power in Trinidad
  14. 14. Conclusion • Biggest economic problem for the Caribbean is cost of energy • Trinidad – Guyana HVDC Marine cable provides diversity of supply and sustainability benefits • Provides demand (outlet for locked in Trinidad fossil fuel generation) • Supports economic development in Guyana • Carbon trading benefits • Lower energy costs and improved GNP for connecting countries

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