While there are a multitude of benefits enjoyed by going solar, energy cost savings continues to be the number one motivator for commercial solar customers. As a result, when customers evaluate solar proposals, they tend to be hyper-focused on the savings projections and the proposals with the highest overall savings often make it to the top of the pile. Unfortunately, this approach is usually misguided as savings calculations can vary wildly across developers due to a multitude of assumptions that are necessary to project future savings.
The purpose of this article is to show that tweaking these variables can drastically alter savings calculations and thus make it extremely difficult to compare different solar proposals. Ultimately it’s important for customers to determine up front what assumptions they would like developers to make to ensure an efficient comparison process.