Responsible for the retention, expansion, and overall satisfaction of identified strategically key managed account customers. This position requires a mindset which includes an Economic and Business Development focus and approach to Customer Experience. Responsible for proactively managing and be ultimately responsible for the development and successful implementation of strategic programs and offerings, developing new business, providing exceptional customer service, contract development and negotiation, and building long-term business relationships / partnerships with executive level decision makers. This position will interface with engineers, account managers and representatives within the Customer Services group, the Energy Efficiency group, the Economic Development group and various departments within the operating company and as necessary with the Corporate National Account organization to meet stated goals and objectives.