paybacks customer engagement

Ask the Expert: Measures, Rebates, and Really Fast Paybacks

Question: What energy efficiency measures often have the shortest payback, including potential rebates? Valerie Eacret, ERS, for Zondits Answer: Here are a few measures with quick paybacks from projects recently crossing our desks: Compressed air setpoint – Frequently we find that the pressure in compressed air systems is set much higher than necessary. While extensive […]

AESP DSM evaluation world energy efficiency

Persistence in the Evaluation World

Max Ma, ERS, for Zondits In the utility M&V and evaluation world, persistence is generally defined as the change in expected savings relative to the baseline.[note]ERS, “Measure Life Study Prepared for Massachusetts Joint Utilities,” 2005[/note] Persistence is the little brother to the end-of–useful-life (EUL) metric. Frequently, persistence factors are built into the deemed values of […]