Through online surveys, this study aimed to gauge the perceptions of and appetite for corporate social responsibility of two stakeholder groups at TransCanada energy infrastructure firm: investors and internal stakeholders within the firm. This study further aimed to determine the best methods for engaging each stakeholder group on CSR and related topics, through an extensive literature review of best practices and case studies. Our results suggest that investors and internal stakeholders perceive there to be significant value in CSR at TransCanada and identified a strong relationship between good performances on ESG indicators and overall firm financial performance. Additionally, opportunities exist to improve communication on ESG performance with investors and more effectively engage internal stakeholders at TransCanada in CSR. Creating cultural change by integrating CSR more effectively across the organization and increased reporting of ESG performance indicators were identified as best practices to improve engagement with both stakeholder groups.