California is often on the “bleeding edge” of environmental policy, a position that is frankly part of the reason why I live here. But sometimes, that stance can be painful and put local businesses in a position where they need to bear the brunt of...
SkySpark collects and stores data from any number of sources and provides an open analytics platform that can be programmed to automatically make sense of the data and provide insights on a building or a portfolio of buildings. This open platform can be customized to a...
On January 1st of 2020, new changes go into effect for Title-24, California’s energy efficiency standard for commercial buildings. Neil Bulger has a nice summary of changes to HVAC, and a bit on lighting. But what’s happening with refrigeration in supermarkets? There are two important changes...
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...
I first encountered condensing boiler woes when conducting an energy audit for a winery which had retrofitted its conventional boilers to condensing boilers. Operating with a supply water temperature of 180°F and a return water temperature of 140°F, the boilers never operated in condensing mode...
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...
Graph credit: www.marketwatch.com One of my mantras this year at kW has been to try to minimize uncertainty. Uncertainty is bad for business – it stalls decisions, makes your colleagues nervous, anxious and stressed, and generally sows the seeds for trouble. Well best laid plans… between...
Trust, but verify. Seems reasonable, but sometimes in commissioning I think ‘always verify’ is a better phrase. Investigation is key in retro-commissioning We were completing a retro-commissioning project on community college building in Southern California and noticed something off in the trend data. The economizer on two...
The end of this year brought about an unexpected and tragic loss to our kW team, when our friend and college David Struck passed away suddenly. Here at kW, it’s like working with family, not to sound cliched, but it’s true. So, in November when...
You can evaluate energy performance and target energy saving projects using graphics like in the case of one of our portfolio clients where we evaluated lighting control system performance looking at lighting power density (LPD) and energy use intensity (EUI). Data visualization is one of...