Cost Update: Commercial and Advanced Heliostat Collectors

Kurup, Parthiv; Akar, Sertaç; Glynn, Stephen; Augustine, Chad; Davenport, Patrick

doi:10.2172/1847876

Cited by 12 publications

(20 citation statements)

References 17 publications

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“…• Heliostat installation cost [12] • Heliostat technical performance, which includes a variety of metrics such as solar field layout, heliostat optical performance, heliostat degradation, and control strategy [13] • Heliostat field operations and maintenance (O&M) [14]- [16] • Minimized commercial deployment risks.…”

Section: Roadmap Vision and Objectivesmentioning

confidence: 99%

“…The Stellio design, developed by sbp sonne [18], is employed in a newly constructed 50-MW Hami pilot plant in China [19]. NREL has conducted a bottom-up analysis of the design and verified projected costs against sbp's assessment [20]. A design schematic and an installed heliostat are illustrated in Figure 5.…”

Section: Example Heliostat Designmentioning

confidence: 99%

“…In NREL's most recent cost study [12], a typical commercial heliostat is compared against an advanced design with alternative approaches to cut cost and move toward the DOE/SETO target of $50/m 2 . Both designs share a commonality that a large cost can be attributed to key components such as drives, mirrors/facets, and supporting structures/foundations.…”

Section: State Of the Artmentioning

confidence: 99%

“…Heliostat facets represent a high proportion of both heliostat component cost and designs that could be improved to reduce LCOE and LCOH. Commercially available heliostat mirrors (including adhesives and supports) represent $24/m 2 of the total cost [12]. At 178.5 m 2 , this is the largest heliostat in commercial CSP use [95].…”

Section: Mirrors/facetsmentioning

confidence: 99%

“…One such example is the Solar Dynamics SunRing, which accomplishes azimuthal rotation with a geared ring riding on ground anchors. Kurup et al showed that the foundation cost is $2.07/m 2 higher than that of a heliostat with a traditional single foundation [12]. However, site labor costs were reduced by $8.60/m 2 , partially as a result of a semi-automated piledriving procedure replacing the laying of a standard foundation.…”

Section: Figure 18 Abengoa Trussed Heliostat At Atacama Imentioning

confidence: 99%

See 4 more Smart Citations

Roadmap to Advance Heliostat Technologies for Concentrating Solar-Thermal Power

Zhu¹,

Augustine²,

Mitchell³

et al. 2022

Self Cite

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Heliostat-based concentrating solar-thermal power (CSP) systems can offer immense potential to provide low-cost, dispatchable renewable thermal and electrical energy to help achieve 100% decarbonized energy infrastructure in the United States. Heliostats are a major determinant of both capital cost and performance of state-of-the-art commercial molten salt towers and Generation 3 CSP systems. 1 In 2021, the U.S. Department of Energy (DOE) Solar Energy Technologies Office (SETO) launched the Heliostat Consortium (HelioCon), a five-year initiative to advance heliostat technologies. The HelioCon mission is threefold: (1) establish strategic core testing and modeling capabilities and infrastructure at national labs; (2) support heliostat technology development in relevant industries; and (3) serve as a central repository to integrate industry, academia, and other stakeholders for heliostat technology research, development, validation, and deployment. In this report, HelioCon presents a roadmapping study on advancing heliostat technologies, intended as a central reference for the entire CSP community.1 More information on Gen3 technologies can be found at https://www.energy.gov/eere/solar/generation-3concentrating-solar-power-systems-gen3-csp. vii This report is available at no cost from the National Renewable Energy Laboratory (NREL) at www.nrel.gov/publications. Metrology and StandardsAppropriate measurement techniques and industry standards are fundamental for product design, prototyping, engineering, and improvement. Gaps in metrology:Opto-mechanical metrology (mirror slope error, mirror facet canting error, and heliostat tracking error) is complex, error-prone, and requires high optical precision, necessitating rigorous validation of different technologies using the same measurement parameter(s). Current metrology gaps include:• Lack of at least two viable metrology techniques for a given measurement parameter (such as heliostat tracking error, available for the global CSP industry)• Insufficient or missing validation of any viable metrology technique against a different, trusted metrology technique or ground-truth article. Gaps in standards:Gaps in community-wide standards for site characterization and heliostat design, testing, field design, and field acceptance test protocols result in significant barriers for new developers, extended design cycles, lower investor confidence, and more complicated arbitration between project parties. Gaps include:• Heliostat terminology • Heliostat design guidelines • Heliostat solar field design/simulation guidelines • Heliostat test guidelines • Heliostat solar field acceptance test guidelines • Site characterization guidelines (e.g., wind, topography, soiling characteristics). Recommended pathway forward: Addressing these gaps requires continuing development of new metrology tools and round-robin tests of existing/to-be-developed tools. More importantly, ix This report is available at no cost from the National Renewable Energy Laboratory (NREL) at www.nrel.gov/publications.o...

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Section: Roadmap Vision and Objectivesmentioning

confidence: 99%

Section: Example Heliostat Designmentioning

confidence: 99%

Section: State Of the Artmentioning

confidence: 99%

Section: Mirrors/facetsmentioning

confidence: 99%

Section: Figure 18 Abengoa Trussed Heliostat At Atacama Imentioning

confidence: 99%

See 3 more Smart Citations

Roadmap to Advance Heliostat Technologies for Concentrating Solar-Thermal Power

Zhu¹,

Augustine²,

Mitchell³

et al. 2022

Self Cite

View full text Add to dashboard Cite

show abstract

HelioCon: A roadmap for advanced heliostat technologies for concentrating solar power

Zhu,

Augustine,

Mitchell

et al. 2023

Solar Energy

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Current Advancement of Heliostats

Weissert

Zhou

You

et al. 2022

Journal of Energy Resources Technology

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This paper looks at the advancements made in Solar Power Towers and Heliostat Fields since 2017 and summarizes the current problems in various subsections. Heliostat fields capturing concentrated solar power (CSP) have been looked at for decades as a reliable renewable energy source that can balance out the variability of wind and photovoltaic cells. In recent years, many studies have researched possible improvements in CSP technology. Uniform methods have been developed to better estimate wind loads in various conditions. Gap size and hinge height to cord ratio has been studied to optimize structural strength. Coatings and cleaning schedules have been developed to increase optical efficiency of plants. However, there are many studies that still need to be done to better understand wind and optics for solar power towers. While the Levelized Cost of Electricity (LCOE) of power tower systems has decreased dramatically in recent years, more research and development need to be done to reach the Sunshot Initiative's goal of 5 cents per kilowatt hour [1]. A large area of improvement for future research comes from heliostat manufacturing costs which make up around 40% of energy plant costs. By lowering this cost from the current value of approximately 100/m2to the Sunshot Initiative's goal of50/2, the LCOE of concentrated solar thermal energy will drastically reduce.

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Cost Update: Commercial and Advanced Heliostat Collectors

Cited by 12 publications

References 17 publications

Roadmap to Advance Heliostat Technologies for Concentrating Solar-Thermal Power

Roadmap to Advance Heliostat Technologies for Concentrating Solar-Thermal Power

HelioCon: A roadmap for advanced heliostat technologies for concentrating solar power

Current Advancement of Heliostats

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