Recent progress in the economics of ocean thermal energy conversion: Critical review and research agenda

Langer, Jannis; Quist, Jaco; Blok, Kornelis

doi:10.1016/j.rser.2020.109960

Cited by 44 publications

(21 citation statements)

References 15 publications

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“…Small islands have the potential to benefit greatly from OTEC (Langer et al, 2020;Vera et al, 2020;Li et al, 2022). Sustainable development of The Bahamas is currently challenged by both water provision and energy constraints.…”

Section: Discussionmentioning

confidence: 99%

“…In The Bahamas, a similar Ecopark could allow for the country to capitalize on additional uses of OTEC and promote further research and development of the technology. Linkages between commercial and academic research is necessary to enhance transparency of OTEC, and particularly to more accurately develop cost estimates (Langer et al, 2020).…”

Section: Discussionmentioning

confidence: 99%

“…Despite the many benefits of OTEC, the technological and economic constraints have proven challenging, and environmental risks exist with OTEC (Fujita et al, 2012). Economic barriers to OTEC are significant and not widely discussed in the literature (Langer et al, 2020). Furthermore, economic information on existing projects is not widely available, nor is the information easy to validate; more transparent cost information on OTEC is necessary (Langer et al, 2020).…”

Section: Acknowledgment Of Any Conceptual or Methodological Constraintsmentioning

confidence: 99%

“…OTEC capitalizes on the thermal differential between surface water and deep ocean water, requiring a minimum difference of 20 • C (Fujita et al, 2012;International Renewable Energy Agency [IRENA], 2014;Vega, 2014;Osorio et al, 2016;Langer et al, 2020;Liponi et al, 2022). In instances where the temperature differential does not reach 20 • C, additional measures can be taken to increase the difference (Fujita et al, 2012).…”

Section: Detail To Understand Key Programmatic Elementsmentioning

confidence: 99%

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Interventions and solutions for water supply on small islands: The case of New Providence, The Bahamas

Welsh

Bowleg

2022

Front. Water

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Small island nations make up more than one-quarter of the countries on earth, yet information on the limitations of the hydrologic cycle in small islands and strategies to address freshwater availability are lacking. Typically, all islands are characterized by their limited supply of freshwater, and their governments commonly rely on large-scale interventions to provide residents with potable water. The island of New Providence in The Bahamas is home to the capital city of Nassau and almost three-quarters of the country's population. New Providence has a long history of hydrologic interventions to supply domestic and industrial water. Historic groundwater sources have been over-extracted to severe levels of salinization, and some groundwater aquifers have not recovered after more than 8 years later. Fresh water was barged in from the larger Andros Island for ~40 years, which ultimately became insufficient to meet demand on New Providence. In addition to an aggressive Non-Revenue-Water (NRW) Program, desalination of ocean water via diesel-operated reverse osmosis plants has served as the primary source of potable water for the island. Present concerns have grown due to its contributions to greenhouse gas emissions. The Bahamas is also investigating alternative mechanisms for providing clean drinking water to the country, with Ocean Thermal Energy Conversion (OTEC) under consideration to co-generate clean energy in addition to drinking water. This article reveals that historic interventions to source drinking water for New Providence Island have proven to be unsustainable and ultimately have threatened the freshwater availability. Current efforts to investigate drinking water provision through OTEC are promising, particularly for the potential co-generation of energy and to promote sustainable development. This solution may be promising for other small islands where development is often challenged by water availability and sustainable energy provision.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Acknowledgment Of Any Conceptual or Methodological Constraintsmentioning

confidence: 99%

Section: Detail To Understand Key Programmatic Elementsmentioning

confidence: 99%

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Interventions and solutions for water supply on small islands: The case of New Providence, The Bahamas

Welsh

Bowleg

2022

Front. Water

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“…Finally, CO 2 net is the produced amount in tons per year of purified CO 2 from the OC-OTEC system. The levelized electricity cost of OTEC is assessed by Langer et al (2020) to be in the range of 25-200 euro per MWh. The impact of this range on the LCCP is shown in Figure 4.…”

Section: Economic Analysesmentioning

confidence: 99%