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Proving grounds
About: David Appleyard is a freelance journalist with extensive experience covering the energy, technology and finance sectors. Feature article
Proving grounds REFocus contributor David Appleyard was recently invited by the Israeli Ministry of Economy to witness early stage CSP research and development. Following is a first-hand view of the Rotem Industrial Park in Negev.
I
N THE wilds of the Negev desert, Rotem Industrial Park in Israel has nurtured some of the world’s best-known and commercial concentrating solar thermal power technologies. Unashamedly modelling itself on California’s Silicon Valley in offering a conducive and collegiate research and development environment for cutting-edge cleantech, it’s a model that nonetheless appears to yield results. Approaching the Rotem technology institute across a Spartan and sun-baked landscape deep within Israel’s forbidding Negev desert, the ancient ruins of a nearby citadel evoke a sense of mystery. Within though, and all thoughts of ancient ruins are immediately confined firmly to the past as cutting-edge concentrating solar power technology gleams under the blazing sun, generating clean, emission-free power for the modern age.
26
JANUARY/FEBRUARY 2015 | Renewable Energy Focus
Online: renewableenergyfocus.com NREL demonstrates vastly improved efficiency for concentrator solar cell http://ow.ly/2Se1WE
Feature article
Another high-profile concentrating solar thermal technology being developed at Rotem comes from Brenmiller Energy. Photo credit: David Appleyard.
in technology incubation, research, development, industrialization and commercialization of renewable energy technologies.
Rotem’s Renewable Energy Innovation Center
Formally established in the 1980s, Rotem employs around 150 people and the green energy centre is headed up by Meni Maor, director of business development. He explains that the Rotem Industrial Park, established by Rotem Industries Ltd., is a high-tech complex providing an environment for scientific research and technology development. Designed as an incubator for everything from tech start-ups right through to marketing, Rotem Industrial Park enjoys preferred area status from the government. Naturally, this equates to substantial grant and tax benefit opportunities, but every developer at the park is also provided with a suite of technological services and management support covering contacts with the local and government authorities and the receipt of the appropriate permits and incentives. Designed to free developers from the bureaucracy, red tape and administrative difficulties that often accompany industrial start-ups, the aim is to allow developers’ focus to remain exclusively on the project at hand. According to Maor, every technology and economic organisation interested in the application and marketing of scientific discoveries in Israel, as well as the Israeli government, supports Rotem. “We invite you to bring your
ideas and initiatives – everything else needed for successful implementation is already in place,” he stated. Maor also highlights the strong social ties that have developed in the close-knit community, which he says arguably enhances the distribution of information to ensure that new technological developments are securely and quickly shared among the various clean-tech residents to further support commercial development. Indeed, Maor happily acknowledges that the site, near Dimona some 160 km from Jerusalem in the South of Israel, has been carefully modelled on California’s Silicon Valley, offering a geographically concentrated locus with industrial and supply infrastructure as well as associated professional and technical networks. In this case, the free flow of ideas between industrial scientists, academia, engineers and consultants comes from fields as diverse as materials engineering, electronics, chemicals, computers, physics and quality control. The park does have a number of key technology centres, covering fields such as medical imaging, crystals growth and processing, radiation detection and computational mechanics, as well as the Renewable Energy Innovation Center. It’s no surprise to learn this facility is actively engaged
Rotem offers four principal activities for renewable energy technology players, including provision of hosting, supporting and technological outsourcing services to entrepreneurs and early-stage technologies. Another key platform is the Renewable Energy Testing and Demonstration Center, home to the glittering structures that can be seen capturing the sun’s energy all around the squat concrete buildings that form the institute’s various laboratories and offices. The solar demonstration, testing and technology validation center (SDTV) occupies an area exceeding 60,000 m2 in the Rotem Industrial Park, where it is estimated that more than 15 different solar technologies will be hosted for demonstration, testing and verification purposes. Each technology will be installed in a 1000 – 20,000 m2 plot. Within the green energy R&D centre Maor says a range of capabilities and expertise is available, including: mechanical engineering, thermodynamics and computational simulations; metallurgy and materials Knowledge Centers and laboratories; the Thermal Solar Energy Applications Technological Center and Hydrogen Storage Research Center; meteorology; and optics and coating laboratories, among others. The centre also provides professional support for the promotion and establishment of solar power projects as well as its so-called Horizon GreenTech Ventures, an incubation programme for seed-early stage technologies in the green energy domain. Formed by a 2011 partnership between Alstom SA, Rotem Industries and Gefen Biomed Investments, Horizon GreenTech ventures’ mission is to accelerate the successful development of entrepreneurial green energy technology companies by providing initial funding, technological and business support, industrial orientation, resources and other services.
JANUARY/FEBRUARY 2015 | Renewable Energy Focus
27
Feature article
BrightSource Energy CEO David Ramm expects the Rotem project will be just the first of many strategic partnerships with Alstom. Photo credit: David Appleyard.
Creating a joint venture to finance and support renewable energy startups, Alstom has a 50% share, Gefen holds 30% and Rotem has 20%. Initially expectations had been to finance some 10 business-incubation projects in three-four years, but Maor explains that this target had been reached within two and a half years. Maor suggests a typical timeframe of 1-3 years to develop a feasible product from seed technology with Alstom set for investment and a likely first mover role in any emerging technology. Among companies nurtured by the Horizon programme is SunBoost, a PV technology with a novel optical collector that stands between the rows of panels reflecting light onto their surface. The company has contracted and is installing its first pilot plant – a 50 kWp facility near Ashkelon in Israel, in a demonstration project that its backers say is capable of delivering a 15% increase in annual electricity production over a comparable PV project.
28
JANUARY/FEBRUARY 2015 | Renewable Energy Focus
Alstom, whose power and energy assets are now being acquired by GE, says it chose Israel “because the country already has one of the world’s most advanced technology industries in renewable and alternative energy sources.” The initiative was also in line with Alstom’s global innovation strategy and complemented other business acquisitions designed to strengthen the company’s position in sectors such as concentrated solar power, energy storage and grid stability. Alstom’s subsequent scouting for novel technologies in Israel resulted in the execution of an international cooperation agreement with the Office of the Chief Scientist in Israel, signed in 2013. The agreement enables the support of the Ministry of Economy on joint R&D projects and enables Israeli entities access to a leading energy technology player. Israel’s Ministry of Energy and Water Resources has also supported the site in other ways. The Ministry chose a number of locations for
commercial solar thermal and PV power plants in Israel with capacities of at least 50 MW or more. Four out of seven sites designated as feasible by Geo-Prospect Ltd., the company chose to find land for the projects, are located in Dimona and the wider Mishor-Yamin area with a collective development area of some 10 million m2. Sites include one of around 6,000 acres at Dimona as well as a 2,000 acre site in an industrial area west of Dimona and a railway loop spanning 5,000 acres, just east of the region. Other sites include about 6,000 acres southwest of the Rotem park and the current site of the park itself, which covers around 200 ha having been expanded. In 2009 the Ministry defined these areas as a national priority for the establishment of renewable energy and with good reason, the Mishor Yamin region is ideal for solar power facilities. Rotem Industries and the Dimona Municipality are planning to establish a joint activity in order to
Feature article
“Our centre is committing management focus, financial resources, and advanced technological infrastructures in this evolving industry.” Meni Maor, Rotem Industries development “in the near future” while the Ministry continues to promote programmes to expand the supply side of renewable energy development. Maor notes that some 500 MW of solar capacity is planned for the region in the next five years, and he is optimistic that the bulk of this capacity will be concentrating solar thermal though the projects are currently still in the panning process, which is expected to take at least another year to finalise. Alstom had previously won the €450 million tender to design, build and operate a 121 MW solar thermal power plant at Ashalim the Western Negev in partnership with Brightsource Energy, having formed the Magalim consortium for the purpose. The Ashalim plant is due for completion in early 2017 at a total cost of around $851 million (€625 million). Magalim Solar Power Ltd - a special purpose company formed by Alstom (25.05%), BrightSource (25.05%), and NOY Infrastructure & Energy Investment Fund (49.9%) – has obtained financing from the European Investment Bank and the Bank Hapoalim for the project and announced financial close in July last year. Located on a 3.15 km2 site in the Negev desert, more than 50,000 tracking heliostats will reflect sunlight onto a receiver on a 240-metre-high tower. On the financial closure, David Ramm, chairman and CEO of BrightSource Energy, said: “This is the first in what we expect will be a number of strategic partnerships with Alstom to leverage the expertise of both firms.” Indeed, BrightSource is a prominent but far from singular success story to have emerged with the support of the Rotem Technology Institute, which still hosts the BrightSource research installation. It is, of course, BrightSource technology which lies at the heart of the
Ivanpah concentrating solar thermal power plant in California, in the US. A joint effort between NRG, Google and BrightSource with Bechtel as EPC contractor, at 392 MW it is the world’s largest such project currently operating since its full commissioning in early 2014. Putting this in context, commenting at the official inauguration of Ivanpah, Ramm noted that “with all three units now delivering power to our customers’ specifications, BrightSource has demonstrated its solar power technology at scale.” His comments came a scant five years after BrightSource Energy implemented its 6 MWth Luz Power Tower 550 (LPT) solar thermal demonstration facility at the Rotem Industrial Park in June 2008. This research facility includes a 12,000 m2 heliostat field with 1641 2.25m x 3.25m reflectors and a 60 metre-high tower holding the 15 metre receiver. It was designed to produce superheated steam at 540°C and 140 bar, similar conditions to those found in a typical 100 MW thermal power plant. In order to conserve water, the demonstration plant uses air-cooled condensers for the steam cycle. With their Solar Energy Development Center (SEDC) providing the company with the ability to test equipment, materials and procedures as well as construction and operating methods, Luz II Ltd, a wholly-owned subsidiary of BrightSource Energy, Inc., is responsible for all BrightSource solar technology development, plant design and engineering. In late 2014, Brightsource followed the Ivanpah headlines by signing a joint venture deal with Shanghai Electric Group Co., Ltd to build utility-scale CSP plants in China. The venture’s first proposal is for two 135 MW CSP plants with storage for the first phase of the Qinghai Delingha Solar Thermal Power Generation
Project, majority owned by Huanghe Hydropower Development Co., Ltd. A further four units without storage are also planned as part of the project. Construction of the first two plants is expected to begin in 2015 and be completed in 2017. Another of the companies currently enjoying Rotem’s culture of collaboration is Heliofocus, which in May 2012 installed a 35-metre high parabolic reflector at the centre. Designed to use air as the heat transfer fluid, it is heated to 650 degrees C - a considerably higher temperature than most solar thermal technologies. The 360 kWth about 130 kWe net peak system was the first demonstrator of a $3 million project to boost the Ramat Hovav thermal power plant, also located in the south of Israel, initially with a further 1 MW of capacity. If all phases of the Ramat-Hovav project are completed the power station will be boosted at about 12 MW in all. The co-called HelioBooster™ technology, first developed at the Weizmann Institute of Science, which also received start-up funding from the Israeli Ministry of Energy and Water, generates steam under conditions that can be directly introduced to the turbine’s main steam line in thermal power plants. Established in 2007, HelioFocus’ major investors are IC Green Energy (ICG) – the investment branch of the Renewable Energies Division of the Israel Corporation – with the Sanhua Holding Group’s Zhejiang Sanhua Company. Commenting at the installation of the demonstrator Dr Yom Tov Samia, Chairman of HelioFocus, observed: “The real challenges are ahead, to convert successful technology to a successful commercial size”. To that end, in 2013, HelioFocus signed a series of agreements with Sanhua and other Chinese players for the construction of solar boosting
JANUARY/FEBRUARY 2015 | Renewable Energy Focus
29
Feature article
stations adjacent to existing thermal plant. The first, to construct on a 10 MW project at a 600 MW coal-fired power station in Inner Mongolia for Chinese energy company Taiqing, could reportedly expand to 60 MW eventually. The development will be undertaken jointly with China Guodian Corporation, one of China’s largest generation companies and now in further planned developments with HeliFocus. This was followed in October 2013 with the signing of an MoU, again with state-owned Taiqing, to develop up to 200 MW of solar thermal boosting capacity for coal-fired power plants, again in Inner Mongolia, in a deal worth around $340 million. Construction is expected to begin
in 2015, parallel to the development of a planned 600 MW coal-fired plant. The memorandum marks the second stage of an overall plan for a solar city in the region. Another high-profile concentrating solar thermal technology being developed at Rotem comes from Brenmiller Energy, a company founded in 2012 by Avi Brenmiller, the former CEO of Siemens CSP and Solel which had been acquired by the German engineering giant for $418 million in 2009 before Siemens walked away from its investment in late 2012. Brenmiller’s bCell™ module is a parabolic trough solar steam boiler producing steam at standard conditions of 500°C and 100 bar or more. Comprising a solar field and a storage
Heliofocus installed a 35-metre high parabolic reflector at the Rotem centre. The unit is designed to use air as the heat transfer fluid in the CSP system. Photo credit: David Appleyard.
30
JANUARY/FEBRUARY 2015 | Renewable Energy Focus
media similar to cement which is buried around two metres below the solar collectors, each bCell produces 1.5 MWe – 2.25 MWe depending on site conditions. The storage acts as a ‘buffer’ between the solar field and the power block, eliminating integration complexity and allowing full despatchability. Based on this cost effective storage, Brenmiller claims to achieve around a 50% cost reduction compared to traditional thermo solar systems. The 1.5 MW, 6 hectare demonstration site at Rotem is connected to Israel’s national grid, and a number of 10 to 20 MW pilots are expected to follow with the company planning to raise some $50 million for a full-scale factory and marketing effort. Similarly, another thermal energy storage technology is under development in-house at Rotem, based on patented phase-change materials technology. The so-called Thermal Energy Storage System is a low cost, high temperature storage design with a typical capacity of 10–200 MWh thermal and a temperature of up to 400°C. With a high specific thermal capacity and high rate of heat charging and discharging advances in nano-materials sciences are behind the breakthrough. Helioris Solar Systems is another CSP technology company that has relied on Rotem for early support with the Rotem Renewable Energy Center and a founding partner in developing the technology which was initially funded by the Ashkelon Technology Incubator. Moving forward, Maor is actively seeking new ideas, partners and collaborators from academia as well as other fields, with the main goal of discovering breakthrough business and technology concept. As he explains it: “Our centre is committing management focus, financial resources and advanced technological infrastructures in this evolving industry.” Indeed, Rotem Industries has engaged with around 400 companies over the last four years, most in early stage development. Maor notes that they work as quickly as possible to go to market with their ideas and concepts. “Most fail,” he admits, but he also noted that a few even succeed.
Proving grounds REFocus contributor David Appleyard was recently invited by the Israeli Ministry of Economy to witness early stage CSP research and development. Following is a first-hand view of the Rotem Industrial Park in Negev.
I
N THE wilds of the Negev desert, Rotem Industrial Park in Israel has nurtured some of the world’s best-known and commercial concentrating solar thermal power technologies. Unashamedly modelling itself on California’s Silicon Valley in offering a conducive and collegiate research and development environment for cutting-edge cleantech, it’s a model that nonetheless appears to yield results. Approaching the Rotem technology institute across a Spartan and sun-baked landscape deep within Israel’s forbidding Negev desert, the ancient ruins of a nearby citadel evoke a sense of mystery. Within though, and all thoughts of ancient ruins are immediately confined firmly to the past as cutting-edge concentrating solar power technology gleams under the blazing sun, generating clean, emission-free power for the modern age.
26
JANUARY/FEBRUARY 2015 | Renewable Energy Focus
Online: renewableenergyfocus.com NREL demonstrates vastly improved efficiency for concentrator solar cell http://ow.ly/2Se1WE
Feature article
Another high-profile concentrating solar thermal technology being developed at Rotem comes from Brenmiller Energy. Photo credit: David Appleyard.
in technology incubation, research, development, industrialization and commercialization of renewable energy technologies.
Rotem’s Renewable Energy Innovation Center
Formally established in the 1980s, Rotem employs around 150 people and the green energy centre is headed up by Meni Maor, director of business development. He explains that the Rotem Industrial Park, established by Rotem Industries Ltd., is a high-tech complex providing an environment for scientific research and technology development. Designed as an incubator for everything from tech start-ups right through to marketing, Rotem Industrial Park enjoys preferred area status from the government. Naturally, this equates to substantial grant and tax benefit opportunities, but every developer at the park is also provided with a suite of technological services and management support covering contacts with the local and government authorities and the receipt of the appropriate permits and incentives. Designed to free developers from the bureaucracy, red tape and administrative difficulties that often accompany industrial start-ups, the aim is to allow developers’ focus to remain exclusively on the project at hand. According to Maor, every technology and economic organisation interested in the application and marketing of scientific discoveries in Israel, as well as the Israeli government, supports Rotem. “We invite you to bring your
ideas and initiatives – everything else needed for successful implementation is already in place,” he stated. Maor also highlights the strong social ties that have developed in the close-knit community, which he says arguably enhances the distribution of information to ensure that new technological developments are securely and quickly shared among the various clean-tech residents to further support commercial development. Indeed, Maor happily acknowledges that the site, near Dimona some 160 km from Jerusalem in the South of Israel, has been carefully modelled on California’s Silicon Valley, offering a geographically concentrated locus with industrial and supply infrastructure as well as associated professional and technical networks. In this case, the free flow of ideas between industrial scientists, academia, engineers and consultants comes from fields as diverse as materials engineering, electronics, chemicals, computers, physics and quality control. The park does have a number of key technology centres, covering fields such as medical imaging, crystals growth and processing, radiation detection and computational mechanics, as well as the Renewable Energy Innovation Center. It’s no surprise to learn this facility is actively engaged
Rotem offers four principal activities for renewable energy technology players, including provision of hosting, supporting and technological outsourcing services to entrepreneurs and early-stage technologies. Another key platform is the Renewable Energy Testing and Demonstration Center, home to the glittering structures that can be seen capturing the sun’s energy all around the squat concrete buildings that form the institute’s various laboratories and offices. The solar demonstration, testing and technology validation center (SDTV) occupies an area exceeding 60,000 m2 in the Rotem Industrial Park, where it is estimated that more than 15 different solar technologies will be hosted for demonstration, testing and verification purposes. Each technology will be installed in a 1000 – 20,000 m2 plot. Within the green energy R&D centre Maor says a range of capabilities and expertise is available, including: mechanical engineering, thermodynamics and computational simulations; metallurgy and materials Knowledge Centers and laboratories; the Thermal Solar Energy Applications Technological Center and Hydrogen Storage Research Center; meteorology; and optics and coating laboratories, among others. The centre also provides professional support for the promotion and establishment of solar power projects as well as its so-called Horizon GreenTech Ventures, an incubation programme for seed-early stage technologies in the green energy domain. Formed by a 2011 partnership between Alstom SA, Rotem Industries and Gefen Biomed Investments, Horizon GreenTech ventures’ mission is to accelerate the successful development of entrepreneurial green energy technology companies by providing initial funding, technological and business support, industrial orientation, resources and other services.
JANUARY/FEBRUARY 2015 | Renewable Energy Focus
27
Feature article
BrightSource Energy CEO David Ramm expects the Rotem project will be just the first of many strategic partnerships with Alstom. Photo credit: David Appleyard.
Creating a joint venture to finance and support renewable energy startups, Alstom has a 50% share, Gefen holds 30% and Rotem has 20%. Initially expectations had been to finance some 10 business-incubation projects in three-four years, but Maor explains that this target had been reached within two and a half years. Maor suggests a typical timeframe of 1-3 years to develop a feasible product from seed technology with Alstom set for investment and a likely first mover role in any emerging technology. Among companies nurtured by the Horizon programme is SunBoost, a PV technology with a novel optical collector that stands between the rows of panels reflecting light onto their surface. The company has contracted and is installing its first pilot plant – a 50 kWp facility near Ashkelon in Israel, in a demonstration project that its backers say is capable of delivering a 15% increase in annual electricity production over a comparable PV project.
28
JANUARY/FEBRUARY 2015 | Renewable Energy Focus
Alstom, whose power and energy assets are now being acquired by GE, says it chose Israel “because the country already has one of the world’s most advanced technology industries in renewable and alternative energy sources.” The initiative was also in line with Alstom’s global innovation strategy and complemented other business acquisitions designed to strengthen the company’s position in sectors such as concentrated solar power, energy storage and grid stability. Alstom’s subsequent scouting for novel technologies in Israel resulted in the execution of an international cooperation agreement with the Office of the Chief Scientist in Israel, signed in 2013. The agreement enables the support of the Ministry of Economy on joint R&D projects and enables Israeli entities access to a leading energy technology player. Israel’s Ministry of Energy and Water Resources has also supported the site in other ways. The Ministry chose a number of locations for
commercial solar thermal and PV power plants in Israel with capacities of at least 50 MW or more. Four out of seven sites designated as feasible by Geo-Prospect Ltd., the company chose to find land for the projects, are located in Dimona and the wider Mishor-Yamin area with a collective development area of some 10 million m2. Sites include one of around 6,000 acres at Dimona as well as a 2,000 acre site in an industrial area west of Dimona and a railway loop spanning 5,000 acres, just east of the region. Other sites include about 6,000 acres southwest of the Rotem park and the current site of the park itself, which covers around 200 ha having been expanded. In 2009 the Ministry defined these areas as a national priority for the establishment of renewable energy and with good reason, the Mishor Yamin region is ideal for solar power facilities. Rotem Industries and the Dimona Municipality are planning to establish a joint activity in order to
Feature article
“Our centre is committing management focus, financial resources, and advanced technological infrastructures in this evolving industry.” Meni Maor, Rotem Industries development “in the near future” while the Ministry continues to promote programmes to expand the supply side of renewable energy development. Maor notes that some 500 MW of solar capacity is planned for the region in the next five years, and he is optimistic that the bulk of this capacity will be concentrating solar thermal though the projects are currently still in the panning process, which is expected to take at least another year to finalise. Alstom had previously won the €450 million tender to design, build and operate a 121 MW solar thermal power plant at Ashalim the Western Negev in partnership with Brightsource Energy, having formed the Magalim consortium for the purpose. The Ashalim plant is due for completion in early 2017 at a total cost of around $851 million (€625 million). Magalim Solar Power Ltd - a special purpose company formed by Alstom (25.05%), BrightSource (25.05%), and NOY Infrastructure & Energy Investment Fund (49.9%) – has obtained financing from the European Investment Bank and the Bank Hapoalim for the project and announced financial close in July last year. Located on a 3.15 km2 site in the Negev desert, more than 50,000 tracking heliostats will reflect sunlight onto a receiver on a 240-metre-high tower. On the financial closure, David Ramm, chairman and CEO of BrightSource Energy, said: “This is the first in what we expect will be a number of strategic partnerships with Alstom to leverage the expertise of both firms.” Indeed, BrightSource is a prominent but far from singular success story to have emerged with the support of the Rotem Technology Institute, which still hosts the BrightSource research installation. It is, of course, BrightSource technology which lies at the heart of the
Ivanpah concentrating solar thermal power plant in California, in the US. A joint effort between NRG, Google and BrightSource with Bechtel as EPC contractor, at 392 MW it is the world’s largest such project currently operating since its full commissioning in early 2014. Putting this in context, commenting at the official inauguration of Ivanpah, Ramm noted that “with all three units now delivering power to our customers’ specifications, BrightSource has demonstrated its solar power technology at scale.” His comments came a scant five years after BrightSource Energy implemented its 6 MWth Luz Power Tower 550 (LPT) solar thermal demonstration facility at the Rotem Industrial Park in June 2008. This research facility includes a 12,000 m2 heliostat field with 1641 2.25m x 3.25m reflectors and a 60 metre-high tower holding the 15 metre receiver. It was designed to produce superheated steam at 540°C and 140 bar, similar conditions to those found in a typical 100 MW thermal power plant. In order to conserve water, the demonstration plant uses air-cooled condensers for the steam cycle. With their Solar Energy Development Center (SEDC) providing the company with the ability to test equipment, materials and procedures as well as construction and operating methods, Luz II Ltd, a wholly-owned subsidiary of BrightSource Energy, Inc., is responsible for all BrightSource solar technology development, plant design and engineering. In late 2014, Brightsource followed the Ivanpah headlines by signing a joint venture deal with Shanghai Electric Group Co., Ltd to build utility-scale CSP plants in China. The venture’s first proposal is for two 135 MW CSP plants with storage for the first phase of the Qinghai Delingha Solar Thermal Power Generation
Project, majority owned by Huanghe Hydropower Development Co., Ltd. A further four units without storage are also planned as part of the project. Construction of the first two plants is expected to begin in 2015 and be completed in 2017. Another of the companies currently enjoying Rotem’s culture of collaboration is Heliofocus, which in May 2012 installed a 35-metre high parabolic reflector at the centre. Designed to use air as the heat transfer fluid, it is heated to 650 degrees C - a considerably higher temperature than most solar thermal technologies. The 360 kWth about 130 kWe net peak system was the first demonstrator of a $3 million project to boost the Ramat Hovav thermal power plant, also located in the south of Israel, initially with a further 1 MW of capacity. If all phases of the Ramat-Hovav project are completed the power station will be boosted at about 12 MW in all. The co-called HelioBooster™ technology, first developed at the Weizmann Institute of Science, which also received start-up funding from the Israeli Ministry of Energy and Water, generates steam under conditions that can be directly introduced to the turbine’s main steam line in thermal power plants. Established in 2007, HelioFocus’ major investors are IC Green Energy (ICG) – the investment branch of the Renewable Energies Division of the Israel Corporation – with the Sanhua Holding Group’s Zhejiang Sanhua Company. Commenting at the installation of the demonstrator Dr Yom Tov Samia, Chairman of HelioFocus, observed: “The real challenges are ahead, to convert successful technology to a successful commercial size”. To that end, in 2013, HelioFocus signed a series of agreements with Sanhua and other Chinese players for the construction of solar boosting
JANUARY/FEBRUARY 2015 | Renewable Energy Focus
29
Feature article
stations adjacent to existing thermal plant. The first, to construct on a 10 MW project at a 600 MW coal-fired power station in Inner Mongolia for Chinese energy company Taiqing, could reportedly expand to 60 MW eventually. The development will be undertaken jointly with China Guodian Corporation, one of China’s largest generation companies and now in further planned developments with HeliFocus. This was followed in October 2013 with the signing of an MoU, again with state-owned Taiqing, to develop up to 200 MW of solar thermal boosting capacity for coal-fired power plants, again in Inner Mongolia, in a deal worth around $340 million. Construction is expected to begin
in 2015, parallel to the development of a planned 600 MW coal-fired plant. The memorandum marks the second stage of an overall plan for a solar city in the region. Another high-profile concentrating solar thermal technology being developed at Rotem comes from Brenmiller Energy, a company founded in 2012 by Avi Brenmiller, the former CEO of Siemens CSP and Solel which had been acquired by the German engineering giant for $418 million in 2009 before Siemens walked away from its investment in late 2012. Brenmiller’s bCell™ module is a parabolic trough solar steam boiler producing steam at standard conditions of 500°C and 100 bar or more. Comprising a solar field and a storage
Heliofocus installed a 35-metre high parabolic reflector at the Rotem centre. The unit is designed to use air as the heat transfer fluid in the CSP system. Photo credit: David Appleyard.
30
JANUARY/FEBRUARY 2015 | Renewable Energy Focus
media similar to cement which is buried around two metres below the solar collectors, each bCell produces 1.5 MWe – 2.25 MWe depending on site conditions. The storage acts as a ‘buffer’ between the solar field and the power block, eliminating integration complexity and allowing full despatchability. Based on this cost effective storage, Brenmiller claims to achieve around a 50% cost reduction compared to traditional thermo solar systems. The 1.5 MW, 6 hectare demonstration site at Rotem is connected to Israel’s national grid, and a number of 10 to 20 MW pilots are expected to follow with the company planning to raise some $50 million for a full-scale factory and marketing effort. Similarly, another thermal energy storage technology is under development in-house at Rotem, based on patented phase-change materials technology. The so-called Thermal Energy Storage System is a low cost, high temperature storage design with a typical capacity of 10–200 MWh thermal and a temperature of up to 400°C. With a high specific thermal capacity and high rate of heat charging and discharging advances in nano-materials sciences are behind the breakthrough. Helioris Solar Systems is another CSP technology company that has relied on Rotem for early support with the Rotem Renewable Energy Center and a founding partner in developing the technology which was initially funded by the Ashkelon Technology Incubator. Moving forward, Maor is actively seeking new ideas, partners and collaborators from academia as well as other fields, with the main goal of discovering breakthrough business and technology concept. As he explains it: “Our centre is committing management focus, financial resources and advanced technological infrastructures in this evolving industry.” Indeed, Rotem Industries has engaged with around 400 companies over the last four years, most in early stage development. Maor notes that they work as quickly as possible to go to market with their ideas and concepts. “Most fail,” he admits, but he also noted that a few even succeed.