The overall objective of the NAMA on Clinker Substitution at Cement Production in the Republic of Moldova is to replace the conventional cement production technology (Ordinary Portland Cement – OPC) with a new cement production technology called “Solidia technology” by 2030, which allows to reduce the carbon footprint up to 70% compared to the OPC in the entire process – from production to end use. Currently the OPC technology is used in the country and the share of clinker in total cement production is 81% on average. Clinker production is a high energy-intensive technology leading to around 830 kg CO2 emissions per tone of produced cement, including 530 kg CO2 / tone of clinker in the process of calcination. In Moldova there are two cement production plants – one owned by Lafarge, French company, situated in Rezina city and the second is situated in Ribnita city and owned by a Russian company. During the last 15 years cement production in Moldova has been permanently growing, on average by 6% per year. Given this trend, in 2030 cement production output can reach more than 2,300,000 tones generating more than 1,000,000 tones of CO2 during the calcination process only. Therefore switching from the OPC technology to “Solidia Technology” which is less energy intensive, produces less chemical emissions, and which is curing with CO2, rather than water and needs less time, will allow to emit 30% less of CO2, use 30% less energy and the CO2 footprint associated with manufacturing and use of cement can be reduced by up to 70%. Preliminary estimates indicate that replacing the OPC with “Solidia Technology” by 2030 will lead to 300,000 tones of CO2 emissions reduction due to calcinations process and 176,000 tones of CO2 due to fuel savings. In addition, the new technology will act as CO2 absorber and will reduce water consumption by 80%. Moreover, fuel consumption will reduce by 30% and the cement curing time will reduce from 28 days to one day, resulting in time, money and inventory space savings for cement and concrete producers.

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