Clean Energy Talk

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Notes and thoughts from SBS-Solar

Posts Tagged ‘energy monitoring’

Solar Highways – The Horizon is Near

Tuesday, October 19th, 2010

Now this is something I am excited about. My mom sent me the link to this video over the weekend and she is right on. Solar Highways. If we were able to construct a save road, parking lot, highway materials w/ photovoltaics under super strong glass we could harness enough energy to cover ALL USA ENERGY NEEDS PLUS 15%!!!

Let that resonate for a moment.

No oil based electricity.

No coal powered electricity.

All solar. ALL SOLAR.

They even go on to explain how post consumer waste, otherwise headed for landfills, would be the source, mixed with other organic materials, to form the base and structure for the panels.

And finally, from a safety perspective, they plan to include embedded LED lights, powered by the solar, that would be used for a myriad of reason like lighting up crosswalks, giving messages like “SLOW DOWN, CONSTRUCTION AHEAD,” changes in speed limit, etc…

Watch the entire video here.

As I was noodling around in related news, I came across another neat happening in the past year. The State of Oregon is putting together some of the first highway solar projects along the highway like the arrays along the autobahn in Germany.

You can view that video here.

Passive House News

Wednesday, September 29th, 2010

This is a great article from the NY Times Energy and Environment blog about Passive House trending, standards, technology and more. One of our Energy Technicians, Zandy Sievers, recently finished the Passive House training this summer with Katrin Klingenberg, the director of the Passive House Institute-U.S. based in Urbana, Ill.

The story concedes that while the upfront costs can be 15-50% higher, the lifetime energy consumption is roughly 80% less than a normal home.  Even this Vermont home will need no furnace, with heat generation coming from radiant floor heat and a small wood stove.  Their hot water will be heater with solar thermal tubes.

Read the entire story here and check out the video below.

SBS Teams up with “Cool Green Home”

Wednesday, August 18th, 2010

The Montana Radio Company and Sustainable Building System’s have teamed up to bring Cool Green Home to Missoula, where over $135,000 in home renovations will be given to a few lucky Missoula homeowners.

The project was started with a simple idea, take an existing Missoula home and create a “showcase” for energy-efficient and sustainable products offered by local businesses.  It has gained so much attraction that 24 area businesses have partnered with us on this unprecedented project, and each will contribute in their area of expertise.

Our goal is to show our community that sustainable and green homes are not only good for our planet but good for our bank accounts, and with planning, big improvements can be made with modest steps.  We intend on setting an example as to what a sustainable green home could look like.  We don’t intend on building one from ground level but getting an existing home started on the path to green. We will start the home remodel by completing an energy audit of the home to identify the best places to improve the energy efficiency.  For the next year we will continue to monitor the Cool Green Home and track how much money the family saved in energy costs and how their lives improved.

We received over 180 applications from Missoula-area homeowners and paired them down to a set of 10.  From here the winners were chosen.  Congratulations to our winning homes:

  • Elke Govertsen & Paul Donaldson
  • Jana & Chuck Doyle
  • Ross & Norma Nickerson
  • James Dodge & Jenny Daniel
  • Paula Raines & Michael Hoffer

Keep checking here and at www.CoolGreenHomeMissoula.com for updates and information on the progression at these five homes.  And if you entered and were not a winner, do not fret, there are great tips and DIY projects associated with this year’s projects and we’re already looking to 2011 for another round.

Embodied Energy Tidbit

Tuesday, July 6th, 2010

This is a great, and short, video from TED U, the interactive learning component of The Energy Detective (TED) device.

Here Catherine Mohr shares some quick and valuable information on evaluating simple life choices as they relate to energy and water consumption… paper towels v sponge v washcloth all the way to building a new home.

Micro Inverters, Monitoring and Mountains, oh my!

Thursday, May 27th, 2010

We just finished installing a 3450 watt solar PV system in the Rattlesnake where we employed 16 Enphase micro inverters. Micro inverters offer several advantages over more conventional string inverters.

Racking system in, Panel get ready!

Each solar module power production is optimized individually so little module mismatching occurs.  As well, if one module is shaded from a nearby tree, this one module will have reduced output, not the entire series string of modules as with the larger string inverters.  This advantage alone makes a huge difference but the pluses don’t end here.

Josh setting the first panel. Check out the lines on those racks and micro-inverters.

The Enphase engineers designed one of the coolest monitoring programs found in the PV world.  Each individual module reports its power output over the existing AC output wiring to your in home computer or with internet service, this data is directed to the company’s website where current and cumulative data is displayed and stored.

A good graphic says a thousand words so if you are interested check out this link to the Enphase monitoring examples.  http://enlighten.enphaseenergy.com/public/systems/BxqT67#.

Micro Inverters, Monitoring and Mountains.

PS – don’t those snowy spring peaks just look great in the distance?  It sure is nice to be working Solar in Montana.

Dan Brandborg
SBS Solar guru
dbrandbog@sbslink.com

Testing TED

Tuesday, April 13th, 2010
They say that knowledge is power and in an attempt to expand my own knowledge and conserve power (literally) I recently installed an energy monitoring device at my home.  This monitor is named TED and since his installment in our home, my wife and I have become quite fond of him.  TED is short for The Energy Detective and true to its name the device has the ability to shine a clear light on how electrical energy is consumed in our home.

SBS purchased two of the TED 5000 devices to try out and see how well they functioned and whether they could be of service to our clients.  The package came with two sets of current transformers, an MTU device, a gateway to route data to a home’s wireless network and a remote display.  The current transformers (CTs) clip over wires delivering power to home electrical circuits and through the magic of magnetic induction register the current moving through the wires.  The MTU sends information gathered to the remote display and to the gateway which allows it to be accessed through an intranet connection on a home computer.

The remote display is a great tool for checking on the instantaneous electrical consumption in the home at any point in time.  You can use it to watch the draw of particular appliances as you turn them on and off while following the numbers on the live dashboard (expressed as kWs, dollars, and pounds of emitted CO2).  It’s quite fascinating in a sort of morbid way.  (Oh that clothes dryer sucks the juice more than I ever imagined!)  The internet option that comes with the TED 5000 allows data collected about energy consumption to be logged and displayed as a series of graphs and tables.  It has the ability to learn certain load profiles and keep a tally of the energy consumption of that particular load.

Our Friend TED - the 5000 model

Long story short…I’ve learned some very revealing facts about how we use energy in our home.  For instance, I used to fret considerably about the energy gobbled up by our well pump.  What I’ve learned is that while it does draw significant power (1.5 to 2.2 kW) its run time is short enough that its overall energy consumption is small compared to other devices in the home.  As mentioned earlier, the clothes dryer is an energy hog of grand proportion and now our outdoor clothes line is gaily festooned with laundry full time come rain or shine.

My load profile shows the steady staccato punctuation of our cycling refrigerator and has definitely sharpened my resolve to bite the bullet and purchase an Energy Star Rated appliance.  More than ever we are careful with lights, the TV, even the coffee maker.  It lends new significance to all the little energy services we tend to take for granted.

Another nice feature of the TED 5000 is its ability to export data to the internet and display it on the power gadget on my Google search page.  I now know even when I’m at work when the dishwasher is running or laundry is being dried.  It’s not my desire to become the “Big Brother” of my own household, but it is a nice feeling to look at the graph and see a nice flat profile.

my usage over the day.

Here’s a the graph from my Google power gadget showing our power consumption over the last 36 hours.  The double humped peaks are our dishwasher (an Energy Star rated device by the way) and the tall spike at about 4 o’clock yesterday was a brief episode with the clothes dryer.  See the teeth at the bottom of the graph?  Our refrigerator takes a bite out of our energy budget.

So you can see the impact TED’s presence has on our awareness.  Maybe ignorance is bliss, but knowledge is power- the power to conserve.  Now I know that for us an 11 kWh day is a pretty good one while  17 kWhs feels pretty indulgent!  TED is a good guy…but he’s brutally honest.  If you decide to bring him into your house he’ll certainly give insights to the grid.

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