A comparison of solar aided power generation (SAPG) and stand-alone concentrating solar power (CSP): A South African case study

Pierce, Warrick Tait; Gauché, Paul; Backström, Theodor W. von; Brent, Alan C.; Tadros, Amir

doi:10.1016/j.applthermaleng.2013.08.014

Cited by 82 publications

(31 citation statements)

References 9 publications

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“…This increases the risk and often reduces confidence about getting the funds required to deploy the technology [59], [67], [68]. This section analyses the existing capital cost (or CAPEX) breakdown for a central receiver/tower plant, and a trough concentrating solar power plant with storage.…”

Section: Future Of Csp Capital Costmentioning

confidence: 99%

The Current and Future Energy Economics of Concentrating Solar Power (Csp) in South Africa

Craig

Brent

Dinter

2017

SAJIE

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For South Africa, an increase in energy demand is associated with higher CO2 emissions. In order to overcome this challenge, the government started the Renewable Energy Independent Power Producer Procurement Programme (REI4P) to allow easy integration of renewable energy technologies into the existing energy mix. The country has an abundant solar resource, and the potential to harvest this resource through concentrating solar power (CSP) has been proven. 600 MW of CSP have been bought in the REI4P, but the future of CSP in SA looks bleak, as the government's recent Integrated Resource Plan (IRP) updates gave no allocation to new CSP plants beyond 2030. Very few CSP plants are connected to the grid, and there is limited research and literature on its learning effect and economics of scale. This study analyses the state of CSP and uses a mathematical relationship to determine the progress ratio, the learning effect, and the likely future of CSP in South Africa. The results address the difficulties involved in determining the learning effect of CSP. OPSOMMINGVir Suid-Afrika word 'n toename in die vraag na energie geassosieer met hoër CO2-uitlate. Om hierdie uitdaging te oorkom, het die regering die Renewable Energy Independent Power Produsent Procurement Program (REI4P) begin om maklike integrasie van hernubare energie tegnologieë in die bestaande energiemengsel moontlik te maak. Die land het 'n oorvloed in sonkrag, en die potensiaal om hierdie hulpbron te benut deur konsentrasie van sonkrag (CSP) is alreeds bewys. 600 MW CSP is in met die REI4P gekoop, maar die toekoms van CSP in SA lyk bleek, aangesien die regering se onlangse opdaterings van die Geïntegreerde Hulpbronplan (IRP) geen toewysing na 2030 aan nuwe CSP-aanlegte gedoen het nie. Baie min CSP-aanlegte is verbind met die netwerk, en daar is beperkte navorsing en literatuur oor sy leer-effek en skaalbesparing. Hierdie studie analiseer die stand van CSP en gebruik 'n wiskundige verhouding om die vorderingsverhouding, die leer effek, en die waarskynlike toekoms van CSP in Suid-Afrika te bepaal. Die resultate spreek die probleme aan in de bepaling van die leer-effek van CSP.

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Section: Future Of Csp Capital Costmentioning

confidence: 99%

The Current and Future Energy Economics of Concentrating Solar Power (Csp) in South Africa

Craig

Brent

Dinter

2017

SAJIE

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“…Apart from increasing the efficiencies of the conventional power station and reducing CO 2 emission, solar aided power generation also provides a better way of utilising solar heat to generate the power. Solar aided power generation would thus contribute to the diversification of electricity generation while ensuring that the cost of electricity generation is affordable, and energy supply security is ensured (Hu et al, 2010;Pierce et al, 2013). In the South African context, Pierce et al (2013) have found solar preheating of feedwater as a more feasible solution in the short-to medium-term, in combination with the coal base.…”

Section: The Technology: Solar Aided Power Generationmentioning

confidence: 99%

“…Solar aided power generation would thus contribute to the diversification of electricity generation while ensuring that the cost of electricity generation is affordable, and energy supply security is ensured (Hu et al, 2010;Pierce et al, 2013). In the South African context, Pierce et al (2013) have found solar preheating of feedwater as a more feasible solution in the short-to medium-term, in combination with the coal base. The basis for the solar aided power generation is replacing the bledoff steam in the regenerative Rankine power cycle with solar thermal (regarded as 'solar boosting mode'), or reducing fuel consumption (regarded as 'fuel saver mode') ( Pierce et al, 2013).…”

Section: The Technology: Solar Aided Power Generationmentioning

confidence: 99%

“…The solar aided power generation concept has been developed in order to combine the strengths of two technologies, namely: the traditional regenerative Rankine cycle, which has relatively higher efficiency, and solar heating at relatively low temperature range (Pierce et al, 2013;Hu et al, 2010). Apart from increasing the efficiencies of the conventional power station and reducing CO 2 emission, solar aided power generation also provides a better way of utilising solar heat to generate the power.…”

Section: The Technology: Solar Aided Power Generationmentioning

confidence: 99%

“…This informed the development of the conceptual framework and the choice of the approaches that were utilised for facilitating integration of solar aided power generation within South African energy policy. Solar aided power generation involves the integration of solar thermal and fossil fuel plant technology in order to account for the environmental benefit of the renewable energy technology and the scale, efficiency and reliability of the fossil fuel technology (Pierce et al, 2013).…”

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A roadmap framework for solar aided power generation in South Africa

Musango

Brent

2017

J. energy South. Afr.

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(Amer and Daim, 2010). It has also been utilised in the renewable energy sector, to assist in filtering alternative technology options in order to support energy policy formulation, energy security and energy independence, among others (Amer and Daim, 2010).Roadmapping consists of two main components: the roadmapping process, which is generally the application; and the roadmap, which is the output of the application (Carvalho et al., 2013). Roadmaps are useful in answering three key questions, as summarised in Table 1. Generally, the visioning question, of 'where we want to go', comes first and determines what will be relevant in the present (Kamtsiou, 2014). These questions can further be represented in a framework -as shown in Generally, there is no standardized approach, methods and tools for developing a roadmap in the public domain; and most of the individual company roadmaps are fragmented and inaccessible (Amer and Daim, 2010). Amer and Daim (2010), however, recommend that the overall goal and objective of a roadmap should guide the choice of an appropriate method and approach to develop a roadmap.This paper therefore reviewed the literature and identified the approaches, methods and tools that have been utilised in roadmapping. This informed the development of the conceptual framework and the choice of the approaches that were utilised for facilitating integration of solar aided power generation within South African energy policy. Solar aided power generation involves the integration of solar thermal and fossil fuel plant technology in order to account for the environmental benefit of the renewable energy technology and the scale, efficiency and reliability of the fossil fuel technology (Pierce et al., 2013).The paper is organised in five sections. Section 2 reviews the literature on the approaches and methods for developing a roadmap. Section 3 uses the literature review to develop a conceptual framework that was applied to provide the initial analysis for the roadmapping of solar aided power generation technology. Section 4 then presents the solar aided power generation case study and the analysis undertaken. Finally, Section 5 presents conclusions and recommendations for integrating solar aided power generation in South Africa. Literature review Overview of roadmapsWithin the field of technology management, roadmapping has proved to be a useful tool for strategic and operational decision-making and Carvalho et al. (2013) and Phaal and Muller (2009) Question DescriptionWhere are we going? This represents the vision, mission, objectives, goals and targets that the roadmap will be achieving.Where are we now? This represents the current state of technology development, products and market development.How can we get there? This represents the policy measures, action plans, research and development programs and strategies (both long-and short-term) that need to be implemented to achieve the vision, goals, objectives.

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The performance analysis and evaluation of C-PV/T aided power generation system

et al. 2017

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Summary In this paper, a novel solar aided power generation (SAPG) hybrid system based on the structural characteristics of coal‐fired power generation is established. In this system, the extraction steam of No.8 low pressure heater is replaced by the hot water coming from a concentration‐photovoltaic/thermal (C‐PV/T) module. The extraction steam returns into the steam turbine to do work, which increases the output power. And the electricity from the parallel C‐PV/T module goes directly into the power grid, which increases the generated power. The C‐PV/T module coupled with coal‐fired power generation improves the solar energy efficiency and provides hot water. As a case study, the economic calculation is performed with actual operation data extracted from a 600‐MW coal‐fired unit. The results show that the total efficiency increased by 1.3%, the coal fuel consumption is lowered by 11 g/kW·h, and the investment recovery period is approximately 7 years. This study offers a theoretical support to the engineering demonstration.

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A comparison of solar aided power generation (SAPG) and stand-alone concentrating solar power (CSP): A South African case study

Cited by 82 publications

References 9 publications

The Current and Future Energy Economics of Concentrating Solar Power (Csp) in South Africa

The Current and Future Energy Economics of Concentrating Solar Power (Csp) in South Africa

A roadmap framework for solar aided power generation in South Africa

The performance analysis and evaluation of C-PV/T aided power generation system

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