We examine the efficiency of Brazilian pulp and paper companies in the production of pulp and bioelectricity using an output-oriented data envelopment analysis. We assume that pulpwood volume, energy consumption, installed capacity and number of workers are the inputs to generate pulp and bioelectricity. We conduct this analysis by first determining the traditional efficiency scores, and secondly calculating a composite index of efficiency to rank the performance of pulp and paper companies. We also conduct a post-efficiency analysis to gauge the impacts of externalities and other related variables on the efficiency in pulp and bioelectricity production. Our results suggest that pulp and paper companies are efficient in pulp and bioelectric production, reaching an average efficiency and composite index of efficiency of 0.9776 and 0.8291, respectively. The post-efficiency analysis suggests that pulp and paper companies could minimally decrease their adjusted efficiencies by increasing the total forest area, power capacity, and outsourced employment. On the other hand, the adjusted efficiency in the production of pulp and bioelectricity might not be statistically impacted by higher socioeconomic levels.

我们使用面向输出的数据包络分析来检验巴西纸浆和造纸公司在纸浆和生物电生产中的效率。我们假设纸浆量，能源消耗，装机容量和工人人数是产生纸浆和生物电的投入。我们首先通过确定传统效率得分，然后计算效率综合指数来对纸浆和造纸公司的绩效进行排名，从而进行此分析。我们还进行了效率后分析，以评估外部性和其他相关变量对纸浆和生物电生产效率的影响。我们的结果表明，制浆造纸公司在制浆和生物电生产方面效率很高，平均效率和综合效率指数分别为0.9776和0.8291，分别。效率后分析表明，纸浆和造纸公司可以通过增加森林总面积，发电量和外包工作来最小程度地降低其调整后的效率。另一方面，较高的社会经济水平可能不会在统计上影响制浆和生物电生产的调整效率。