From Wellhead to Walmart™, ESI is the premiere guide to managing your company's exposure to the US energy & petrochemical markets. From Wellhead to Walmart™, ESI is the premiere guide to managing your company's exposure to the US Energy and petrochemical markets. We are private client advisors. Confidentiality is the key to developing effective strategies that improve bottom line profits. Some of our clients are focused on the needs of industry players with capital at risk. Purchasing data is not enough by itself to ensure the best decision-making. ESI puts the puzzle together for its clients. Each of our clients has unique operating parameters and financial goals. ESI uses decades of experience to conduct in debt analysis of the market fundamentals to provide focused recommendations to reduce market risk and improve profitability for ESI clients.