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Pole Mount PV We’ve had a pretty good summer for solar photovoltaic (PV) installations in the Upper Valley of NH/VT. A typical PV system consists of a number of solar panels and an Inverter to change the DC (direct current) from the panels to AC (alternating current) which is used in our homes. Often the [...] Arlington, MA, 6/6/10 Back in January I set up the weather station I got for Christmas near my house (see Weather or Not). It was relatively easy to get it up and running and to run the software that gives you a graphical view of the data as well as an historic perspective. It took [...]
Solar Electric Array I’ve been working with a customer for a few weeks on an idea that he had for his guest house. His guest house is used only about 1 week every month. But, even when the house isn’t being used it is still consuming electricity — a few outdoor lights, enough heat to [...]
Electric Bill One part of my job that I enjoy is helping people analyze their electrical usage. As soon as people start thinking about how much electricity they use, they can immediately start influencing it — and most people can reduce their electrical usage by 10-20% with very little effort if this is the first [...] Google PI Today is March 14th, for some that’s 3.14 (pi, π) day. Pi is the greek symbol representing the constant which is the ratio of the circumference of a circle to its diameter. Google often takes the opportunity to acknowledge an interesting day (or date) on its front page, and they did so today [...]
Kill A Watt I am a strong proponent for measuring things and finding the real information among the data. You may know that it is 14 degrees outside (this mornings temperature here in Enfield, NH), and that it was 36 degrees yesterday and 34 degrees the day before. This is interesting data, but just data, [...] Solar in the desert I was speaking to a friend who lives in Germany about some of the interesting alternative energy projects she has read and heard about. Germany has some highly acclaimed passive solar designed homes and has earned a reputation in the last few decades as being a leader in conservation and alternative [...]
Deep cycle battery Many people who walk into my store want to talk about batteries, especially deep discharge re-chargable batteries. They want to know the latest technology updates and they are discovering uses for batteries that they may not have thought of before. Here are three categories of large rechargable battery use: Backup Power: Many people [...]
Streetlight I serve on the Enfield Energy Committee where we are trying to find ways for our town to reduce our energy consumption. One of our projects is to evaluate all the streetlights in town and see if we can reduce the number and save on our town’s electric bill. We currently pay $25,000 for lighting [...]
Solar Fountain There is a nice water fountain in the middle of a large cemetery in Enfield. There is no good way to run electricity to the fountain to circulate water with a pump, but town water was available near by through a hose. For many years during special events someone would turn on the [...] |
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