The cooler uses roughly 0.58 kWh of electricity per night (see “Thoughts inspired by the release of our other co-latest Green Guide: Greening Your Office” ). So our gross savings using the automatic on/off timer are 0.58 kWh per day. Meanwhile, the timer uses roughly 0.024 kWh per day. That gives us a net savings each day of roughly 0.556 kWh. The financial payback time for the timer is probably something like 4 months. After that, it’s all savings, all the time.Of course, Jonathan tells me, the financial payback time depends on how much energy the timer is saving you—the bigger the energy hog, the faster the payback time.
Looking for ways to save energy in the workplace? Water coolers/heaters are ubiquitous in offices around the world. Nearly all of them are left on all night long when there’s no point in keeping the hot water hot and the cold water cold. Until recently, your humble Chelsea Green was guilty of this wasteful practice. Well, you know us—we just couldn’t pass up an opportunity to quickly and cheaply green the place up even further. In this video, Jonathan Teller-Elsberg explains how he installed an automatic power timer to save energy and reduce cost. After we’d filmed this segment, a fellow grasshopper pointed out that plug-in automatic timers consume a small amount of electricity themselves—suggesting that we might actually end up with a net loss of energy savings. Well, we wouldn’t want to suggest to our readers they take one step forward and two steps back in the race to reduce carbon emissions. With this in mind, Jonathan used his handy-dandy Kill-A-Watt electricity usage monitor and found that, even with the timer sipping electricity constantly, we still end up with a net energy savings. Here’s Jonathan:
Be sure to check out GreenTweet TV for more energy saving green tips.