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Dear Reader,

The Energy Miser #28 May 12, 2009

Spring is here. My garden is planted (except for the tomatoes) and I'm already imagining the snap of the fresh radishes. This is my first real attempt at a garden and it's one of the many small steps I'm taking to reduce the family's carbon footprint. More on the garden in a later issue.

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Thanks for Reading ,
Mark

Read all past issues of The Energy Miser here and Follow me on Twitter - 140 character bursts of observations, ideas, and facts about energy and the environment.

Here is a system we recently completed in Westford, MA. Not only is it a 5.3 kW solar electric array, but it also makes domestic hot water using eight SunDrum solar hot water panels. (click on the picture for a larger image)

The eight SunDrum panels provide domestic hot water for a recent addition to the home. They also offer the added benefit of cooling eight of the solar electric panels. The cooling improves the performance of the electric panels. (solar electric panels drop in efficiency as they heat up).

The beauty of the SunDrum system is that it fits within the roof footprint of the solar electric system and the balance of system is essentially identical to a traditional solar hot water system.

In the roof space of a solar electric system you get both solar electricity and solar hot water, improved PV performance and better overall system economics. If you'd like to know more about this system, please give us a call.
I know you don't want to believe it but pretty soon, you'll be starting up the air conditioner. But did you know that with a well ventilated attic, your AC won't have to work as hard? Let me explain.

Hot air has a lower density than cool air. That's why hot-air balloons rise. Of course, if the space above the hot air is hotter, it won't rise. That's one of the reasons Summer Hot Air Balloon shows happen early in the day.

The same principals apply in your home. Like it or not, hot air in our homes rises and the energy carried by that hot air escapes through the ceiling. In the winter that's generally a bad thing, in the summer, that's a good thing. A good thing, that is, if the energy has somewhere to go. Unfortunately, if your attic is as hot or hotter than the rooms below, that energy can't go anywhere so your air conditioner has to take care of it.

To give that energy a place to go, your attic should be well ventilated. This is usually done with passive vents in the ridge, gables or soffits. But on the hottest days, passive ventilation isn't enough. Unfortunately, up until now, active ventilation required a grid powered fan (and the costs that go with it).

Sunrise Solar offers a line of solar powered, thermostatically controlled attic vent fans. The fans come in sizes for attics up to 1200 square feet (of attic floor space), 1200 to 1500 square feet, and 1500 to 1800 square feet. The fans are thermostatically controlled so they only run when the attic is hot. There are also fans for flat roofs or gable installation. The installed prices range from $758 to $928. To make matters better, installation of these fans qualifies you for a 30% federal income tax credit on the cost of the fan.

A Cooler attic, less work for your AC, and a nice tax credit. If you are interested in a solar powered attic fan, give us a call at 978-567-9463.
TED is a new resident at our home. He is a nice resident. He doesn't say anything, he just sits on the counter, reflecting - reflecting our home's electricity use. He also allows me to drive my family crazy.

TED stands for The Energy Detective. TED is a device that hooks into your home's main service panel and tells you (by radio signal) on a moment to moment basis, how much electricity you are using. It also keeps running totals for the day, month, and year. (Click on the image for a larger version and note both the kilowatts of instantaneous power usage (0.610 kw or 610 watts) and the cumulative kilowatt-hours usage of 7.5 kWh).

It took only a short while for the Durrenberger family to get along with TED and understand what he was telling us. In fact, within minutes, my son and I were shouting across the house, "What does it say now?" as we turned lights and appliances off and on.

What have we learned so far? At its peak, the clothes dryer uses about 3,500 watt of power (ouch). Also at it's peak, the dishwasher uses about 2,000 watts. Late at night, when everyone is in bed and the computers are off, the house uses between 350 and 650 watts (refrigerator off/on). Unless, of course, your progeny left the lights on in the workshop ;-).

After just two weeks, we've gotten a feel for how much power the house uses and can tell when something unusual is running. That's when I get to annoy the rest of the family - I'm quite certain I sound like my father when I shout, "Why are we using so much power?!"

As Bill Hewlett (of Hewlett Packard) once said, "You cannot manage what you cannot measure... And what gets measured gets done." TED allows us to measure our electrical usage in real time so we can manage that usage. TED is changing the family's behavior.

If you are interested in TED for your home it's $139.95. If you don't want to venture into your electrical panel our electricians can install it for a small fee. (Note: TED does not work with homes that are Net Metering with a solar or wind electric system but they are working on one that does). To order call 978-567-9463.
If we've done electrical work on your home, then you've probably met Jonathan Williams. Jonathan is one of our electricians and he just passed his Master Electrician License Exam. He passed his exam one day shy of his 23rd birthday. Smart kid. When you see him, congratulate him. Jonathan is a graduate of Assabet Valley Regional Vocational Technical School.

Along with the work of installing renewable energy systems, Jonathan regularly performs electrical work like service upgrades, detached building electrification, and sub-panel installation for our customers.
I was please and surprised to receive the following notice from Constant Contact:

"Congratulations! As a 2008 Constant Contact All Star, you're part of a select group of customers and business partners. We're proud to recognize your efforts to effectively use email marketing in 2008 to connect with your customers and members."

As you may know, Constant Contact is the service I use to distribute this newsletter. I've been quite happy with their product and just signed up for my fourth year. Wow. Time flies.

Use rechargeable batteries, Add insulation, turn down your thermostat, disable your doorbell, reduce waste, use a fan instead of an air conditioner, turn off the lights, switch to compact fluorescent bulbs, put computer gear on a power strip and turn it off at night, unplug unnecessary appliances, ventilate your attic, walk instead of drive, ride a bike, group your errands, inflate your tires, grow your own food, eat locally-produced food, recycle, use your most efficient vehicle, get a hybrid vehicle, wash your clothes in cold water, buy less packaging, use a clothesline instead of the dryer, drink tap water, print with narrower margins, use both sides of the page, buy less, compost, install a renewable energy system...

Thanks for Reading The Energy Miser,


Mark Durrenberger
New England Breeze, LLC

phone: 978-567-WIND (9463)




New England Breeze | 7 Santos Drive | Hudson | MA | 01749