Evaluation of Efficiency and Savings: Some Remarks on the Influence of Energetic and Financial Parameters

Assessing energy savings is a complex task due to the lack of direct measurement tools. Meters record consumption, but there is no direct way to measure savings. Instead, savings are estimated by comparing the projected consumption without efficiency improvements to the actual consumption after the interventions. This is not a strict before-and-after comparison but rather an evaluation that accounts for variables such as climate conditions, operational factors, and other influences on energy consumption. This paper is based on real-world applications, carried out within the energy diagnosis process and supported by the implementation of the IPMVP® protocol. The study focuses on the economic analysis of some investments, highlighting the importance of determining their profitability, which can influence their attractiveness to an Energy Service Company (ESCO). The results of sensitivity analyses are reported, focusing on evaluations based on assumptions that are particularly important, especially in times of high uncertainty regarding energy prices, interest rates, and energy production scenarios. The paper reports on these analyses, identifying key parameters to focus on and establishing suitable criteria for decision-making.