The environment is the key element in Wärtsilä's approach to sustainability. For us, environmental responsibility has two dimensions: products and operations. Most of our efforts to improve our environmental performance, also within our operations, are conducted as part of product development and improvement. This work is supported by operational measures, which are based on achieving high environmental standards and continuous improvement.
Continual improvement of environmental performance requires the organisation to constantly work in a systematic way. This work is guided by our strategy and its environmental targets, the Code of Conduct, and the company's policies relating to Quality, Environment, Health and Safety, and it is co-ordinated and monitored by the EHSS Management team. In developing our operations, processes, and products, we endeavour to use the latest technologies available for improving efficiency in areas such as material and energy consumption, as well as for reducing and managing emissions and waste.
Wärtsilä has defined a process for the development of a product environmental strategy and its targets. The process includes the identification of aspects and impacts of the products, the means to influence these impacts, the identification of enabling and restricting boundary conditions, and the analyses of the information and the preparation and implementation of the strategy and the targets.
Wärtsilä continuously develops and improves its operations and products with the help of certified environmental management systems. Our principle is to apply the certified EHS (Environmental, Health and Safety) management systems based on ISO 14001 and OHSAS 18001 in all Group companies, excluding those companies focusing purely on sales. These units are required to apply Wärtsilä's internal EHS model which was aligned in 2016 to meet the requirements of new ISO 14001:2015 standard. Our EHS management systems cover all the operations of our subsidiaries, which means that we are able to promote environmental protection and reduce adverse impacts on a wide front.
The company's EHS management system focuses especially on complying with legal requirements, identifying and reducing environmental aspects, impacts and risks, training personnel and clearly defining their responsibilities, full documentation of activities and procedures, action in emergencies, and continuous improvement of environmental performance. The company's subsidiaries set their own targets covering significant environmental aspects of their operations and monitor the overall performance of the management systems. At the end of 2016, 55 Wärtsilä companies operated with a certified environmental management system. These certified environmental management systems cover roughly 86% of Wärtsilä's total workforce.