Due to increasing environmental challenges and rising concern for environmental protection, companies have experienced a shifting focus toward sustainable development. This paper describes the concept of corporate environmentalism and a natural resource-based view of the firm. The purpose of this paper is to explain resource-based analysis from the environmental point of view. Within resource-based analysis, the environmental impact of firm's assets such as physical, human, financial, information, organizational, and reputational is explained. Furthermore, the role of firm's capabilities in achieving environmental protection is described as they have a crucial influence on the possibility to reduce negative and to create positive impact of the firm on the environment. The conduction of resource-based analysis enables the firm to determine the main areas for improvement in environmental protection. The paper emphasizes the need for integration of activities across organizational departments and organizational boundaries through the whole supply chain. Furthermore, the paper present the methods of assessment of environmental strength and weaknesses based on Balanced Scorecard framework.