SanJoseGreenHome.com

When most people think “green” homes they imagine solar panels and fancy energy saving gadgets.  It doesn’t have to be this way.  We invite you to explore with us a passive solar home in Saratoga (Bay Area) designed by a local architect Hari Sripadanna.  The home has achieved a LEED Gold rating and truly stands as a model for sustainability in our community.  After all, Hari bought parts of his house on Craigslist! 

Obviously, we could not cover all the fascinating details in the video so if you want to learn more, please read Hari’s comments and see design plans right below the video.  Enjoy.

by Hari Saripadanna (parts of the article was originally posted on the GAB Report):

With increasing popularity of green building and passive solar design, it is important to understand that sustainable design is more than a collection of credits. The key is to create synergy between building systems and practices that multiply each other’s benefit. One can create more value simply by choosing two or more complimentary sustainable design elements that play off of each other. The combined effect is more than the benefit when these design elements or systems are used alone. 

I would like to share with you some synergistic concepts used in the design of my house and show you how (more…)

This was fun.  A beautiful day on a roof of an Eichler home in San Jose (off Meridian and Curtner).  I met up with my friend Jarom Ferriante and learned a few cool things about solar panels and foam roofs.  This is a home of a crafty clay artist – Harriet, who’s art is shortly featured in the video as well.  Hope you enjoy!

Jarom can be found on: www.dura-foam.com
More of Harriet’s art is featured on her website: www.AcrylicAndClay.com

Here is a great example how one can take an older home and make it more energy efficient with an element of smart design.  These home owners in San Jose could have built this sun room addition in an old fashion way but instead, they decided to incorporate a passive solar element that not only made their home more comfortable but also chipped off a few bucks off of their energy bills.  You will also learn a few more benefits of a cool roof and see a couple of them in action.

The technical info is fun and educational, however, your favorite part might just be the very end, where Sigmond shares a message with us all from his heart.  Enjoy.

If you have any questions for Sigmond feel free to leave a comment here or give him a call direct at 408-353-6727.

A small PETE device made with cesium-coated gallium nitride glows while being tested inside an ultra-high vacuum chamber. The tests proved that the process simultaneously converted light and heat energy into electrical current. Credit: Photo courtesy of Nick Melosh, Stanford University.

Solar energy, more commonly defined by the energy geeks as “radiant light and heat from the sun”, continues to be harnessed for energy production. As you may be aware, most accountable renewable energy invokes the following:

• Solar Radiation
• Wind Power
• Wave Power
• Hydroelectricity
• Biomass

The problem is, only a fraction of the radiation gathered from the sun is really used.

Scientists have always used both light and heat from the sun to produce energy, however, they hadn’t yet discovered a way to efficiently utilize both simultaneously – Until now!  A device out of Stanford University is promising not just one production of the solar energy but two by being able to harness the power of both light and heat.

A Photon Enhanced Thermionic Emission device, or PETE device, is not only a state of the art technology but could potentially reduce the costs for the production of solar power to the point of where it could be a real competitor against oil as a source of energy. This is great for two reasons: 1) the environmental aspect of having solar power being a big player in the energy game is huge considering that it’s a renewable and clean energy source and 2) therein lies a real competitor to the oil industry. This is not to mention it also could open the door to (more…)

OK you tech geeks out there who like to build your own stuff, you must have considered building your own or shopping for used solar panels by now…. Why buy used solar panels?  If you are trying to save money on your residential solar electricity project, used solar panels may be a good investment.  Not only can they keep your initial cost low, but you will also be decreasing the waste at your local landfill by recycling.  But not all used solar panels can be effectively reused, so here are some tips to keep in mind before you buy.

What to look for when buying used solar panels

The ideal used solar panel can look almost new.  The glass will be clear, dry and intact with no cracks or holes.  The frame will be square and sturdy, and the solar cell connections will be securely soldered.  Older panels will typically be larger and heavier than the newer models that output the same amount of electricity.  But if the used panels are in good shape, the lower price will offset any size or weight disadvantage.

Check the electrical output from used solar panels

Don’t rely on the electrical output printed on the factory label.  Instead, use a multimeter and check the panel in direct sunlight to find out what its real output is.  The capacity for solar panels that have spent their lifespan in direct sunlight tends to degrade over the years.  But the decrease in output may not be significant.  A panel that is rated at 22 watts might only produce 18 watts after 20 years in the sun.  But if the price is right and the capacity is enough for your project, it could still be a good deal.

Where to find used solar panels

The best source of used solar panels will be one that is close enough that you can visit in person to inspect the panels for damage and electrical output (dig through Craigslist).  Also, try (more…)

These are the tips that keep coming up from a few solar pros in the community.  They can be common sense but tend to be overlooked by most folks who are pondering installing a solar panel system:

1. You can save money by learning about solar energy yourself

Now that solar panel parts are readily available for purchase on the internet, it really is possible to save money by building your own solar panels.  Build a few to power small battery powered electronics equipment like your laptop and cell phone.  Use those project to learn about how solar energy works, and to find out if you enjoy the process enough to tackle building them on a larger scale.  If you find you enjoy building solar panels, design a system for larger scale solar energy applications. 

2. Solar energy systems are scalable 

Many people think that in order to use solar power in their homes that they have to build and install a complete solar electric system that will supply all of the electricity that they now use.  But that’s simply not true.  You can start off by using smaller solar panels to power outdoor lighting or to light the inside of your garage.  Or you can install a small grid-tied solar panel system to offset part of the electricity that your family uses on a daily basis to cut your energy costs and reduce your carbon footprint.  Later you can add more solar panels and eventually generate enough solar electricity to be energy independent or even sell electricity back to your local utility company. 

3. Do an energy audit before you (more…)

Who said green homes have to look like hay barns?  Here is a great example of how sustainability does not have to define the aesthetic.  This was exactly the idea behind this ultra chic “Hillside House” in Marin that is on track to be the first Platinum LEED certified home in Marin County.  

Scott Lee, the mastermind behind the project and the president of SB Architects, said he and his family envisioned a sustainable and warm home that would be comfortable to raise children and did not aspire to museum quality finishes.  They wanted some quirky interior design elements that would make the house playful and inviting and that is exactly what they have accomplished. 

Lee’s brand-new home, a 2,100-square-foot, four-level dwelling built on a 50 percent slope, is clad in Western red cedar. It’s tucked into the hillside on three floors and fronted with glass, wood and balconies.

To an interview given to Houzz, Scott says the house is really quite small by custom home standards. It’s just 3 BR and 3.5 BA. “We didn’t want or need a large home.  The house appears (more…)

A scam?  A rip-off? A deal of the century?  Ready or not folks, it’s here!  A solution that gives access to solar power even to the most cash strapped green minded suburbanites and….… it’s brought to you by the very people who delivered us the sub-rime mortgage debacle.  It’s called a “residential solar lease” which is a “no money down” program that can get you electricity cheaper than what you cash out to PG&E on monthly basis.  Sounds familiar?

The idea is simple; instead of buying your panels by dishing out thousands of dollars upfront, you lease them for “one low monthly fee.”  You win, the solar company wins, environment is happy.   So what’s not to love?  How about a 15 year contract, a 3.9% increased payment every year and our Wall Street friends who have their fingers all over this sweet deal!? 

Let’s start from sqaueOn the surface, this sounds like a viable option for many home owners.  It solves an expensive problem of purchasing the panels outright for around 27,000 dollars (average 1,700 sq. foot home).  It works a bit like a car lease where home owners sign a deal that locks them in for 15 years with the option of extending their lease or buying the panels at the end of the contract.  With a solar lease, your monthly payments can be around $110 which, according to the service providers, will normally be around 15% less than your PG&E bill.  Are you sold yet?

After all, the way these companies and even our media like to paint it – it’s a no brainer deal.  SolarCity, which is based right here in our backyard of Silicon Valley, is one of the very well financed operations that is the first to start aggressively market this contract for home owners all over Bay Area and western states.  SunRun is another similar co. based in San Francisco.

Who really finances these deals?  (more…)

If going solar would cost you nothing would you consider it?  A few weeks ago I attended a small Green Business Show in San Jose, where our local vendors had a chance to present their services to the community.  These shows are always a great fun because green vendors pack a good punch of specialized knowledge. 

That day, one of my inquisition victims was Jeremy, a solar design consultant with Solar Technologies.  So I started as usual… “How are you”, “How’s business?”, and then “Why in the world don’t we have more solar panels in our neighborhoods?” 

After quite a few minutes of warm exchange of insights we realized we haven’t come up with anything that much revealing except for one awesome fact – affording solar energy is not as hard as most home owners think.  In fact, it makes total financial sense.  We parted by sharing one last sentiment  – most home owners simply have not taken a chance to look at this opportunity. 

So why most of us have not embraced the sun as a source of energy? 

1.  The main reason home owners have not adopted solar technology more widely is because of initial cost.  These days it’s in the range of about $25,000 -$28,000 for an average 1,600 square foot home.  Big price tag indeed. 

2.  A secondary rationale is esthetics – some folks feel that having big solar panels on their roof hurts the curb appeal of the property.  

3.  A third reason most folks have not gone solar could be one or a combination of these simple reasons: they are not sensitive to environmental issues of today’s world or they are simply waiting for a kick in the (more…)