We, in the energy industry, have long used engineering calculations, aided by simple linear regression models, to estimate the energy saving potential of proposed interventions. However, as data sensors become increasingly ubiquitous and data storage costs continue to decline year over year, a shift away...
You created a regression model of your building’s energy use and now want to use its predictive capabilities. How do you go about assessing your model’s predictive power? As I mentioned in an earlier post, you want to steer away from focusing on a singular...
Trend data analysis one of the most powerful approaches for finding wasted energy in buildings. Each year the amount of data that your building automation system (BAS) can provide is more – literally faster, better and cheaper. But how to you make sense of your...
I find it to be important for me to point out that this is the second blog post in which I’ve co-opted a song for a blogpost title. Hats off to Bowie for the first one (Ch-, Ch-, Ch-, Changes). This one pays tribute to...
We’re only just past the halfway-point of the year, but things have been abuzz in California’s energy policy world. Below are a few bills and general policy items you should be keeping an eye on: Energy Efficiency Business Plans (A.17-01-013) On May 31, the CPUC (California Public...
Co-authored by Jim Kelsey and David Jump. We’ve shown leadership but now it feels like we’re stumbling. We’ve been pretty optimistic about normalized metered energy consumption (NMEC) as a streamlined platform for achieving and demonstrating savings in buildings (see our prior post for more on why). And,...
What’s cool about NMEC and M&V 2.0 There’s a lot of buzz in our state right now around the concept of M&V 2.0 and Normalized Metered Energy Consumption (NMEC). The term was created as part of AB 802 in 2015 with the inclusion of the following...
Ever since I entered the energy efficiency industry 27 years ago, the currency of energy efficiency in buildings has been the energy efficiency measure (aka energy conservation measure, energy efficiency opportunity, energy saving opportunity). As a result, the structure of our industry, from energy audits,...