Displaying items by tag: California

Taiwan Cement has just commissioned a 107MWh energy storage project at its Yingde plant in Guangdong province, China. Subsidiary NHOA Energy worked on the installation and has been promoting it this week. The battery storage works in conjunction with a 42MW waste heat recovery (WHR) unit, a 8MWp solar photovoltaic unit and a proprietary energy management system. It is expected to store about 46,000MWh/yr of electricity and save just under US$3m/yr in electricity costs.

NHOA Energy, formerly known as Engie EPS before Taiwan Cement bought a majority stake in it, claims it is one of the largest industrial microgrids in the world. We can’t verify this for sure, but it is definitely large. For comparison, the 750MW Vistra Moss Landing Energy Storage Facility in California often gets cited as the largest such facility in the world. This is run by a power company, as are many other large battery energy storage systems. In its annual report for 2022 Taiwan Cement said it was planning to using NHOA’s technology to build seven other large-scale energy storage projects at sites in Taiwan including its integrated Suao, Ho-Ping and Hualien cement plants.

The aim here appears to be supplying renewable electricity to the national grid in Taiwan. Taiwan Cement is diversifying away from cement production, with an aim to derive over 50% of its revenues from other activities besides cement by 2025. In 2022 cement and concrete represented 68% of its sales, while its electricity and energy division, including power supply and rechargeable lithium-ion batteries, represented 29%. The company is also not using its own batteries at the Yingde plant. Instead it is using lithium iron phosphate batteries supplied by Ningde Times. This is worth noting, as the cement producer’s batteries are used in vehicles.

Global Cement regularly reports news stories on cement plants that are building photovoltaic solar power arrays. However, so far at least, energy storage projects at scale have been rarer. One earlier example of an energy storage system loosely associated with a cement plant includes the now decommissioned Tehachapi Energy Storage Project that was situated next to the Tehachapi cement plant in California. That project tested using lithium ion batteries to improve grid performance and integrate intermittent generation from nearby wind farms. It is also worth noting that Sumitomo Osaka Cement’s sister company Sumitomo Electric is one of the world’s larger manufacturers of flow batteries, although no installation at a cement plant appears to have happened yet. In simple terms, flow batteries are an alternative to lithium ion batteries that don’t store as much energy but last longer.

More recently, Lucky Cement in Pakistan started commercial operation of a 34MW solar power plant with a 5.59MWh energy storage unit at its Pezu plant in Khyber Pakhtunkhwa in late 2022. Reon Energy provided the equipment including a lithium-ion based battery approach to the storage. Then, in March 2023, Holcim US said that it was working with TotalEnergies to build solar power capacity and a battery energy storage unit at the Florence cement plant in Colorado. TotalEnergies will install, maintain and operate a 33MW DC ground-mounted solar array and a 38.5MWh battery energy storage system at the site. Operation of the renewable energy system is expected to start in 2025.

Away from electrical batteries, the other approach to energy storage at cement plants that has received attention recently from several quite different companies has been thermal batteries. The two prominent groups using them at different scales are Rondo Energy and Synhelion. The former company has developed its Heat Battery technology, which uses refractory bricks to absorb intermittent renewable energy and then supply the energy back as a steady stream of hot gas for use in a cement plant mill, dryer, calciner or kiln. Both Siam Cement Group (SCG) and Titan Cement have invested in Rondo Energy. In July 2023 SCG and Rondo Energy said that they were planning to expand the production capacity of a heat battery storage unit at a SCG plant to 90GWh/yr. Synhelion, meanwhile, has been working with Cemex on using concentrated solar power to manufacture clinker. It achieved this on an ‘industrially viable scale’ in August 2023. It has since been reported that the companies are working on building a small scale industrial plant at Móstoles near Madrid by 2026. Crucially for this discussion though, the process also uses a thermal energy storage unit filled with ceramic refractory material to allow thermal energy to be released at night, and thus ensure continuous operation.

The examples above demonstrate that some cement companies are actively testing out storing energy at scale. Whilst this will not solve the cement sector’s process emissions, it does potentially start to make using renewable energy sources more reliable and reduce the variable costs of renewable power. Whether it catches on remains to be seen. Most of these kinds of projects have been run by power companies and that is where it may stay. It is instructive to note that Reon Energy was the only company to state that its battery-based energy storage system has a life-span of 8 - 12 years. Our current vision of a net-zero future points to high electrical usage but it may be shaped by how good the batteries are… from our phones to our cars to our cement plants.

For more information on Rondo Energy read the January 2023 issue of Global Cement Magazine

US: Peru-based UNACEM has entered into a definitive agreement with Martin Marietta Materials to acquire its Tehachapi cement plant in California. North Carolina-based Martin Marietta Materials reported the value of the deal as US$317m. The companies expect to close the deal in mid-late 2023.

Taiheiyo Cement subsidiary CalPortland previously terminated its deal to buy the Tehachapi plant, along with two local cement terminals, in April 2023. Japan-based Taiheiyo Cement said that the parties had been unable to obtain necessary approvals from the US Federal Trade Commission within a suitable timeframe.

US: Heidelberg Materials North America has reached an agreement with the administration of Santa Clara County to decommission its quarry in the county, near Cupertino. Silicon Valley News has reported that the quarry historically supplied limestone for cement production at Permanente cement plant, which came offline in April 2020. The county administration says that the deal signals that it has achieved its aim to ensure final closure of the Permanente plant.

Heidelberg Materials North America spokesperson Jeff Sieg said that the company is ‘pleased to formalise our agreement not to restart the kiln at our Permanente cement plant.’ He continued "We remain focused on working collaboratively with the community and other stakeholders on the development of a long-term strategy for the property, so that it can continue to provide value in the future.”

US: In 2022, Fortera began building a 15,000t/yr-capacity plant to produce its low-carbon cementitious material, Fortera Reactive Calcium Carbonate (RCC), at CalPortland's Redding cement plant in California. The commercial-scale plant will produce a reactive form of calcium carbonate using CO₂ from the kiln of the 600,000t/yr cement plant. Fortera's process converts 1t of limestone into 1t of Fortera RCC by capturing and mineralising CO₂ from the cement plant's kiln. Fortera cement production emits 60% less CO₂ than ordinary Portland cement (OPC). The 15,000t/yr plant will operate at 20 times the scale of previous pilot tests. The Redding Record newspaper has reported that 15 workers will be employed at the site.

Former Redding cement plant owner Lehigh Hanson formed an agreement with Fortera to collaborate on the low-carbon cement plant project in March 2021. The plant subsequently switched ownership to Martin Marietta Materials in October 2021, before CalPortland bought it in July 2022.

Eagle Materials announced this week that it had completed the acquisition of Martin Marietta’s cement import business in the north of California. A key part of the deal includes the sale of a cement terminal at Stockton. No value for the transaction has been disclosed.

The agreement prompts discussion for two immediate reasons. Firstly, it continues the enlargement of Eagle Materials’ cement business with its second terminal in California. The company operates its cement business in a band running almost right across the US. It runs seven cement plants in seven different states and jointly operates, with Heidelberg Materials, a plant in Texas too. It also runs a network of 25 cement terminals, including the new acquisition, stretching from California in the west to Pennsylvania in the east.

Eagle Materials’ focus on the cement sector also harks back to its previous plans to separate its various businesses. In 2019 it approved a plan to split its heavy materials and light materials businesses into two publicly-traded entities. The decision was made in response to pressure by shareholder Sachem Head Capital Management to make the company, in its view, more valuable. A strategic portfolio review followed but the planned separation was subsequently delayed due to the Covid-19 pandemic and poor market conditions, amongst other reasons. The board of the company then cancelled the proposed separation in 2021 citing the financial benefits of a diversified business, opportunities for strategic growth and the divestment of its oil and gas proppants business.

The other talking point is that the Eagle Materials transaction follows a positive response by the Federal Trade Commission (FTC) in response to the abandonment of CalPortland’s attempt to buy the Tehachapi cement plant in southern California and two related terminals from Martin Marietta. CalPortland’s parent company Taiheiyo Cement said in late April 2023 that it had terminated the acquisition agreement originally announced in mid-2022 due to its inability to obtain approval from the FTC in a timely manner. Whilst the FTC did not say if it had directly tried to block the proposed deal it did say, “The abandonment is a victory for consumers and preserves competition for a key component of Southern California’s construction and infrastructure industries.”

The FTC argued that the transaction would have reduced the number of cement suppliers in Southern California from five to four, further concentrating an already concentrated market, and was “presumptively illegal.” It noted that the Tehachapi plant was only about 20km away from CalPortland’s Mojave cement plant. It went on to say that, if the deal had gone ahead, CalPortland was poised to own half of the cement plants serving the Southern California market. It added that it would have been well-placed to raise its prices and that, “the transaction would have also increased the likelihood for coordinated action between the remaining competitors in this concentrated market.”

The de-facto block by the FTC of the Tehachapi sale now opens up the question of who Martin Marietta might try to sell it to next. Cemex, Mitsubishi Cement and National Cement (Vicat) are the obvious contenders given that they each also run integrated plants in the state. Of course another company, especially one with some form of existing distribution network, may express interest. Given its enlarged presence in Northern California, Eagle Materials springs to mind. Other potential buyers are, of course, available.

US: Eagle Materials has completed its acquisition of Martin Marietta's cement import and distribution business in Northern California. The business is centred on the Stockton cement terminal in San Joaquin County. Eagle Materials hopes that the new business will enable it to extend and strengthen its reach across its heartland US cement sales network.

President and chief executive officer Michael Haack said "Our Nevada Cement operations have long-standing customer relationships in Northern California, and this acquisition will uniquely position us to better serve these and new customers with complementary imported product. Our entire cement system is currently 'sold out,' and this acquisition will enable us to more actively participate in the strong US demand environment."

US: Taiheiyo Cement says that its subsidiary CalPortland has terminated its deal to buy the Tehachapi cement plant from Martin Marietta Materials. It has blamed the situation on the two parties being unable to “timely obtain the necessary approval by the US Federal Trade Commission.” The deal was originally announced in August 2022 with CalPortland agreeing to buy the integrated plant in California and two terminals.

US: Mitsubishi Cement Corporation has reportedly abandoned its planned construction of a cement terminal at the Port of San Diego in California. The Union-Tribune newspaper has reported that the cement producer failed to produce a plan involving electric vehicle use for cement deliveries to the facility. Board of Port Commissioners rejected the company’s previous terminal proposal in 2020 because of its involvement of diesel-powered cement trucks.

US: Purebase and Fortera have signed a non-binding agreement to build a commercial plant at Purebase’s headquarters in Ione, California. The companies are working towards a definitive agreement to build a plant using Fortera proprietary recarbonation process that uses captured CO₂ and mineralises it into a secondary cementitious material.

Scott Dockter, the chairman, and chief executive officer of Purebase, said, “We believe that a strategic partnership with Fortera would put Purebase on a fast-track to bring a lower carbon product to market.” He added, “We believe Fortera has developed a unique solution to reduce carbon emissions in cement, and it will have the advantage of using Purebase’s mineral resources and location in Ione, California which is ideally located in northern California near major ports which can effectively serve the western-US markets and abroad.”

Purebase acquires, develops, and markets minerals for use in agriculture, construction, and other specialty industries.

US: Lehigh Hanson plans to stop cement production at its integrated Permanente plant near Cupertino in California. The subsidiary of Germany-based Heidelberg Materials plans to use the site as a distribution centre and to continue some quarry work, according to the Mercury News newspaper. The cement plant was originally opened in 1939 but it stopped clinker production in 2020.