Climate Change

2015 Corporate Responsibility report > Environmental Resilience

Climate Change

Nesher's investment in environmental protection and its high operational efficiency are reflected in the Company’s environmental performance, which are in line with that of the most advanced cement producers worldwide. Nesher’s performance regarding GHG emissions is among the best in the world and has been so for the past few years.

Acknowledging the severity of the global warming problem caused as a result of greenhouse gas emissions, the global cement industry extensively seeks solutions for reducing greenhouse gas emissions in the industry.

As an industry pioneer in the area of environmental responsibility, Nesher considers the reduction of greenhouse gas emissions to be a key aspect of its environmental policy. Nesher has many voluntary, ongoing projects to reduce greenhouse gas emissions, and invests considerable means and effort into developing, and implementing, future projects.

The production of clinker, an essential stage in cement manufacturing, has significant environmental impacts: greenhouse gases are emitted both from the process itself, and from the high energy consumption the process requires. Approximately 60% of greenhouse gas emissions derive from the processes involved in converting limestone to clinker while 30% derive from other greenhouse gas emissions from fuel combustion. The remaining 10% of greenhouse gas emissions derive from electricity consumption required for the process of moving and grinding of raw materials and the finished products.

The cement industry worldwide, therefore, measures its performance according clinker-based performance indicators, and in this regard Nesher is one of the global leaders in environmental performance.

Production of cement with low clinker content
As part of the global trend for reducing the environmental impact of cement production, including greenhouse gas emissions, Nesher is developing capabilities for the production of cement with low clinker content and works in collaboration with the Company's customers to gradually lower the percentage of clinker in cement.

Actions taken to reduce greenhouse gases

Cement composition – production of cement with low clinker content

As part of the global trend for reducing the environmental impact of cement production, including greenhouse gas emissions, Nesher is developing capabilities for the production of cement with low clinker content and works in collaboration with the Company's customers to gradually lower the percentage of clinker in cement.


Raw materials

The industry is constantly seeking for suitable raw materials for the production of cement. One of the common solutions is the use of recycled raw materials, waste materials and by-products of various industries that can serve as substitutes for quarried raw material while maintaining the strength and quality of the products. This can reduce the need for virgin materials, thus decreasing greenhouse gas emission resulting from the burning process of the stone and the energy consumed by the manufacturing process.

Click here for additional information on recycled raw materials


Enhanced energetic efficiency - Enhanced production technologies

Over 80% of the consumption of energy in cement manufacturing is due to the burning of limestone in kilns. Within the framework of the manufacturing process, the cement industry focuses mainly on improving the thermal efficiency of the manufacturing kilns. Currently, the prevailing trend in the industry is a shift from wet and semi-dry kilns to dry kilns, characterized by the highest thermal efficiency. Over the years Nesher has taken steps to install innovative technologies in order to achieve lower energy consumption levels, and the switch to dry production lines in the Ramla plant was completed in the nineties. The cement components' grinding and mixing processes are characterized by high consumption of electricity, and in 2006 Nesher began operating an advanced cement mill in Ramla. The high efficiency of this mill enhanced the efficiency of these production stages and significantly reduced electricity consumption, leading to a 20% reduction in energy consumption. The Ramla plant uses electricity produced in a natural gas powered power station.


Increasing the use of alternative fuels

Nesher continues to enhance the production process efficiency and strives to increase the use of alternative fuels as an additional means of reducing greenhouse gas emissions. For example, in 2014 the Company launched an input system for RDF - processed fuel that is generated from industrial and urban waste with a high energetic value. Nesher utilizes used solvents as a substitute for fuels and thus eliminates the need to destroy these solvents and reduces the Company's fossil fuel consumption.

RDF project


Advanced low-carbon-content technologies for production of cement and Carbon sequestration

The traditional cement industry (Portland cement) used as the basis for modern construction is searching for innovative technologies that will allow the production of cement by using means that have no significant impact on the environment, particularly greenhouse gas emissions. The global cement industry is promoting an additional solution for the reduction of greenhouse gas emissions: the development and implementation of innovative technologies capable of absorbing and sequestering carbon dioxide emitted during the manufacturing process of cement. These technologies are still young yet furthering their development is essential to industries in which greenhouse gas emissions are caused by the process itself and not merely by the consumption of energy.

Preserving local industries or "Carbon Leakage"
Applying emission quotas by regional - as opposed to worldwide – borders, and without adequate economic mechanisms, may lead to the phenomena known as carbon leakage, in which industries transfer their manufacturing facilities to countries with a lower environmental commitment. Thus, a decline in emissions in one region will not lead to a worldwide decrease in emissions but to their movement to another region.

Greenhouse Gases

In the past few years, Nesher has been one of the world's leading companies with regard to emissions per ton of clinker.

Greenhouse gases

kg
  • 2005
    3181134
  • 2006
    3250589
  • 2007
    3208796
  • 2008
    3162712
  • 2009
    2926667
  • 2010
    3191051
  • 2011
    3261669
  • 2012
    3242211
  • 2013
    3092505
  • 2014
    3302020
  • 2015
    3262898
    • 0M
    • 1M
    • 2M
    • 3M
    • 4M
    • 5M

Greenhouse gas emissions per ton of cementitious product

kg
  • 2005
    650
  • 2006
    666
  • 2007
    655
  • 2008
    657
  • 2009
    645
  • 2010
    656
  • 2011
    653
  • 2012
    645
  • 2013
    635
  • 2014
    642
  • 2015
    625
    • 0K
    • 200K
    • 400K
    • 600K
    • 800K
    • 1000K

Comparison of greenhouse gas emissions

Carbon Dioxide

(Per ton of clinker)

Gross CO2 emissions

(Kg per tonne clinker)

Carbon Dioxide

(kg per ton of cement equivalent)

Gross CO2 emissions

(Kg per tonne cement equivalent)

Environmental performance with regard to greenhouse gas emissions are measured both based on the normalization per ton of clinker, and on a ton of cement (equivalent) and a ton of cementitious materials. Nesher is one of the world's leading companies with regard to performance measured according to clinker production, which indicates the highest level of energy efficiency.

This indicator is expected to improve in the coming years with the use of alternative fuels, including biomass components (that are neutral as regards greenhouse gas emissions). Since the Israeli concrete industry demands cement with a high clinker content compared to Europe, greenhouse gas emissions from a ton of cement or of cementitious material are slightly higher than the European level. Nesher, together with its customers, are working on ways to gradually reduce the clinker content in its products.

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