sentences:  Because the expense of determining the amount of savings achieved erodes the benefit of the savings themselves, IPMVP suggests not spending more than 10% of the expected savings on M&V.Often M&V approaches are bundled with other monitoring, support, or maintenance services that help achieve or ensure the savings performance.These costs should not be considered M&V expenses and depending on the project and services details, may greatly exceed 10% of the savings.