Mercer's mission is to provide sustainably sourced fibers, renewable energy and chemicals for essential human needs. As one of the world's largest producers of NBSK market pulp and a significant and growing producer of energy and chemicals, we feel confident that we are succeeding in our stated mission. In 2015, we sold approximately 1,463,000 ADMTs of NBSK pulp, 815,000 MWh of electrical power, and 22,000 tonnes of chemicals.
Our operations consist of three large-scale, modern pulp mills - Rosenthal, Stendal and Celgar. The Rosenthal and Stendal mills are located in eastern Germany, approximately 300 kilometers south of Berlin and 130 kilometers west of Berlin, respectively. Our Celgar mill is located in southeastern British Columbia, Canada, approximately 600 kilometers east of Vancouver.
Our mills' core product is NBSK - a premium grade of pulp with strong long-term market fundamentals - and we have a total of 1,540,000 ADMTs per year of capacity. In recent years, we have also begun to focus on the bio-economy by producing green energy and chemicals as by-products of our manufacturing process. At nominal incremental cost, we are able to convert residuals from our pulping process into high margin and environmentally-friendly by-products, which add significant value to our business. These are stable revenue sources, unrelated to pulp prices. Most notably, all three of our mills are net suppliers of energy, meaning we produce more energy than we use - we have a total electricity generation capacity of 305 MW.
Our diversified customer base is located all around the world. We ship NBSK pulp globally to tissue, specialty paper and high-quality printing and writing grade manufacturers, as well as provide energy to local utilities and supply chemicals (most notably, tall oil) to regional specialty chemicals producers and fuel refiners.
We employ approximately 1,469 people worldwide, and we take our responsibilities in our communities seriously. We strive to manufacture our products as efficiently as possible and to ensure that our business generally enhances the social goals and general welfare of the communities and environment in which we operate. We spend a significant amount of time and resources to ensure the safety of our employees, and a minimal impact on the environment. We regularly engage with our stakeholders on a variety of issues, as well as give back to the communities in which we operate. We believe this work is critical to our long-term success.
Our management team has many years of experience and is focused on creating value. In order to maximize our shareholders' value and simultaneously achieve our social goals, we focus on our core businesses, while we continue to explore other new and innovative products. We continue to strive for operational excellence to maximize our profits in the NBSK market, as this product's premium properties and supply-demand balance make it an attractive market. In addition, we are continuing to grow our energy and chemicals revenues, which are less cyclical than our pulp revenues and provide the company with highly profitable and stable cash flows, while at the same time allowing us to fully utilize the forest resource.
Mercer is a Washington state corporation with offices in Vancouver, BC; Seattle, WA; and Berlin, Germany. The common stock is listed for trading on the NASDAQ Global Select Market under the ticker symbol MERC, and the Toronto Stock Exchange under the ticker symbol MRI.U.