Displaying items by tag: Electricity

Nepal: Hetauda Cement Industry resumed cement production on 7 April 2025 following a five-month suspension due to electricity shortages. According to general manager Nabin Kumar Karna, the plant requires 8MW/day of electricity to crush limestone.

The plant reportedly holds 1900t of coal in reserve and is acquiring a further 4000t through a bidding process. Though its capacity is 18,000 bags/day, current output is only 12,000 bags/day.

Türkiye: Medcem has completed testing of its new waste heat recovery (WHR) facility, which will recover 25% of the energy demand of the plant’s second rotary kiln line commissioned in 2024.

The 9.6MW facility uses an organic rankine cycle (ORC) system to generate electricity from a single heat source. The company says that this will lead to significant cost savings in energy expenses while also reducing CO₂ emissions.

South Africa: Cement producer PPC and independent power producer Yellow Door Energy (YDE) have signed a 24.5MWp solar power purchase agreement. The project will operate under a solar wheeling arrangement, delivering electricity from YDE’s Leeudoringstad solar park to PPC’s Slurry, Dwaalboom, De Hoek and Riebeek operations via the Eskom grid.

YDE will install over 20,000 panels, generating 57.5 million kW in the first year of operation and offsetting 59,800t of CO₂. The project includes a new 43km overhead electrical line connecting the solar park to the Eskom substation.

Nepal: Hetauda Cement Industry will restart production in the first week of April 2025 after completing machinery maintenance, securing raw materials and reaching agreement with employees, according to local news reports. The state-owned plant halted production on 1 October 2024. It has a capacity of 16,000 bags/day.

Acting general manager Nabin Kumar Karna said “It took some time to repair the machinery as it was old and damaged. The machines were installed when the industry was first established in 1977, and replacing them immediately was not possible due to financial constraints. Currently, we have about 100t of coal in stock, and more is expected to arrive starting tomorrow, so the raw material supply is not a major concern.”

Karna said that the electricity issues the company had previously faced had been resolved, and the Nepal Electricity Authority were ‘committed’ to providing a regular electricity supply.

Egypt: Arabian Cement Company has signed a 30-year power purchase agreement with IRSC for renewable electricity. The deal covers the development, financing, construction, ownership and operation of the second phase of the firm’s solar power plant. The plant will have a total capacity of 17.6MW and is expected to produce 32.5GW/yr of electricity.

Brazil: Buzzi subsidiary Cimento Nacional has signed a 15-year power purchase agreement with renewable energy provider Casa dos Ventos for 65MW/yr of wind power from the 756MW Serra do Tigre and 360MW Babilonia Sul wind farms. The agreement will supply 100% of the producer's electricity requirements in its Brazilian facilities.

The Serra do Tigre wind farm is currently under construction in Rio Grande do Norte, but the Babilonia Sul wind farm is operational in Bahia.

Europe: Sweden-based SaltX has signed a letter of intent with German engineering firm thyssenkrupp Polysius to collaborate on establishing 100% electric cement production facilities in Europe. The facilities will combine SaltX’s electric arc calciner (EAC) technology with thyssenkrupp Polysius’ material handling solutions.

CEO of SaltX Lina Jorheden said "Strong partnerships are essential for us to effectively implement our technology and reduce millions of tonnes of CO₂ emissions from the industrial sector. Our collaboration with thyssenkrupp Polysius is crucial for developing complementary systems to the EAC technology and building electrified facilities for our customers."

Sweden: Heidelberg Materials has successfully operated a 300kW plasma-heated cement kiln at its Slite cement plant, which it claims is the first of its kind. The producer has achieved 54 hours of continuous operation, with 60% CO₂ concentration in the flue gas. The aim is to reach 99%.

The kiln is part of the ELECTRA project, which aims to replace traditional combustion processes with electricity-based solutions, like plasma. The project consists of 17 partners from 8 countries.

Project manager Bodil Wilhelmsson said "It looks very promising. We started the tests at the end of last year and can now say with certainty that this is the right way to go: we will be able to produce clinker with plasma."

Fuel-related CO₂ emissions from cement production are eliminated because no fuel needs to be used in the production process. Instead, CO₂ is heated to over 5000°C, where it becomes a plasma jet that heats the material in the kiln.

Wilhelmsson added "The absence of fuel in the process means that there is no ash in the product. This means that a parameter that could affect the quality of the product if it fluctuates is no longer considered. So, it looks like the quality of the clinker can actually be slightly higher in this process."

Heidelberg Materials plans to build a 1MW kiln in Skövde cement plant in 2026, where further tests will continue.

Saudi Arabia: City Cement Company has signed an agreement with the National Electricity Transmission Company to build a 106MW transmission station at its Nisah plant. Mist News has reported that electricity transmitted via the station will supplant oil generators at the plant. Construction is scheduled for completion later in 2025.

Zimbabwe: PPC Zimbabwe says it is speeding up the construction of two solar power plants, with a combined capacity of 30MW, to enhance power supply to its cement plants. The company plans to start work on the solar units from the first quarter of 2025 with completion scheduled for the second half of 2026, according to the Herald Zimbabwe newspaper. Albert Sigei, Managing Director, said that the company was also continuing to work with the Zimbabwe Electricity Transmission and Distribution Company (ZETDC) to improve the electricity supply.