Category: Sustainability

Your Car Battery Could One Day Be Your Home Backup Power

Perhaps you, like me, have considered investing in a home battery system — not to go “off grid” so much as to survive blackouts. Simply having solar does not give you such protection, because when the grid goes down, your solar panels do not generate electricity. That’s required by power companies, because they don’t want you pumping electricity into downed power lines as their technicians work to repair them.

Personally, I’m holding out for a future in which the energy stored in my EV batteries can be tapped to power my home during a blackout.  There’s a term for this called vehicle-to-grid, but a more accurate term would be vehicle-to-home, since it would be done in isolation from the grid.

Because I have two EVs with combined battery capacity of 170 kilowatt-hours, I have a lot of stored power available to me at any time, even if those cars are not fully charged.  For example, 100 kilowatt-hours can provide 5,000 watts of household electricity for 20 hours.

There are commercially available inverters for creating a 120-volt outlet in any car, either gas or electric, but inevitably some automaker — probably Tesla — will create an interface that allows for the electricity stored in one’s EV battery to be tapped for household use during a blackout.

Several electric trucks are going to hit the market in 2020 and beyond, and each will have 120 and possibly 240-volt outlets for field power, which is a good start. You could run an extension cord to power critical home appliances. 

My Advice on Buying Solar Panels and Electric Cars

By JIM SMITH

In the wake of last Saturday’s green homes tour and electric vehicle showcase, I’d like to share the advice I give to people who ask me about investing in solar power and buying an electric car.

As much as I wish it weren’t so, you will not recoup what you spend on solar panels, insulation and other green home improvements for your home when you sell it. As with any improvement, you will receive a percentage of what you spend, but it will not be anywhere near 100%. Only make those investments because you’ll enjoy the comfort and savings for at least a few years — and because it’s the right thing to do.

Regarding electric cars, I recommend buying a used EV. The used car industry has yet to properly value used EVs. Currently electric cars are devalued the same way gas cars are devalued, which doesn’t make sense. Consider a 4-year-old gas-powered car with 100,000 miles on it. You can probably get it for half its original price, because so many components, such as transmission, timing belt or fuel pump, are worn and might fail. But none of those components exist in EVs. There are under 50 moving parts in a Tesla. The same age EV is simply as good as new.

A used Tesla built before mid-2017 is an especially good deal, because lifetime free supercharging transfers to the buyer (unless purchased from Tesla). I’ve seen many Tesla Model S cars for sale online under $40,000, less than half their original price. Here’s one I found just now on autotrader.com….

All-Electric Homes Are Practical Now, and Can Help Mitigate Climate Change

The typical American home is powered electrically but heated by natural gas, propane or other fossil fuels. You and I can generate our own electricity with solar panels, but there’s no way for us to generate natural gas or other fossil fuel energy, so the transition to a “net zero energy” lifestyle necessitates turning away from fossil fuels and going all-electric.

Fortunately, technology has advanced — just in the last decade — to the point where going all-electric is totally practical, affordable, and a way you and I can mitigate climate change

At Golden Real Estate, our office was heated with natural gas until November 2017, when we installed a heat pump “mini-split” system and had our natural gas meter removed. With 20 kilowatts of solar photovoltaic panels, we were able to eliminate our natural gas bill but not increase our electric bill. We continue to pay just $11 per month to be connected to the electric grid (which functions as our “battery” thanks to net metering), but we are generating all the electricity needed to power, heat and cool our office building. We even have enough electricity from the solar panels to power our four electric cars without buying any net electricity from Xcel Energy. We hope other businesses will follow our lead.

Making the switch to all-electric at home is still in our future, because — like you, I suspect — we prefer gas cooking, gas grilling, and having a gas fireplace.

If, however, we can get beyond those preferences, it is possible now to heat our home and domestic hot water using heat pump appliances, and to cook our food with electric or induction cooktops and ovens.  Electric grilling is also available, although not as attractive from a taste standpoint to most of us.

All-electric homes was the subject of a talk by architect Peter Ewers at last week’s meeting of the Colorado Renewable Energy Society’s Jeffco chapter.  You can view an archived video of Peter’s talk at www.cres-energy.org/video.

Once we have removed gas service from our homes (and gas cars from our garages), we will have also eliminated the risks of explosion and carbon monoxide poisoning, too.  Wouldn’t that be great?

LED Lighting Has Some Health & Vision Side Effects Worth Considering

In my July 18th column, online at www.JimSmithColumns.com, I wrote about my favorite home improvements, including the adoption of LED lighting, which I prefer to CFL lighting and is far more energy efficient than incandescent lighting. In particular, I wrote glowingly, so to speak, about “daylight” LEDs — the whitest light available, so well-named for how it matches the color of bright sunlight.

In our office, I replaced all our “soft white” LEDs with “daylight” LEDs to match the color of sunlight coming through our four Velux sun tunnels.

A reader of that column alerted me to some recent research which showed “daylight” LEDs to be harmful to vision, exacerbating macular degeneration, and disruptive of our circadian rhythm (important for good sleep) specifically because it simulates full natural sunlight.

I urge you to Google “daylight LEDs and health,” as I did, and you’ll find that one of the top links is for a June 2016 American Medical Association policy statement (adopted unanimously at their annual meeting) warning about health and safety problems associated with white LED lighting, so common now in the lighting of American streets.

It was right after learning of this research that I bought a new HP laptop computer and noticed that it offers a “nightlight” setting which automatically changes the screen lighting from white to yellow LED light at sunset.  It made me wonder why I was so late to learn about this issue!

The reader who alerted me to this topic suffers from early stage macular degeneration. He said he has replaced all the LED lights in his home with incandescent bulbs. I’m satisfied that changing back to the lower “color temperature” LEDs will be enough. I have noticed that some LED fixtures (like the ones I installed in our conference room) have a switch allowing you to choose between “soft white,” “warm white” and “daylight” temperature settings.

Free eBook on Solar Power with ‘The Property Brothers’

KNOWLEDGE IS POWER is the name of the free eBook, which you can download below.

The simple, undeniable fact is this: The sun can provide more energy in an hour than all of humanity uses in a year. We’re talking about an inexhaustible supply of clean, safe, reliable power that people and countries across the planet can access to power their lives and economies.

Even still, fossil fuel utilities continue to make billions of dollars from dirty energy monopolies – while the rest of us pay the consequences.

But we can flip the script by taking bold action.

That’s why Climate Reality has teamed up with HGTV’s Property Brothers co-host and solar energy advocate Jonathan Scott for Knowledge is Power, a new e-book about the incredible benefits of solar energy and the deceptive tactics fossil fuel utilities are using to protect their bottom lines at the expense of every person on the planet.

The benefits of solar don’t end with lower power bills. Cutting carbon pollution? Check. Empowering communities? Check. Providing energy independence? Check. Creating good jobs? Check and check.

Learn more about this incredible resource – and how together we can take control of our energy future – by getting your free download of Knowledge is Power today

Conserving Water Is Likely to Become More Important in Coming Years

My understanding as a layman is that al-though one of the impacts of warmer oceans due to climate change is increased precipitation over land, it won’t be as predictable and consistent, so we need to include water conservation in any discussion of sustainability. Or think of it as water management, since we’ll need to be concerned about flooding just as much as about prolonged droughts.

At the local level, we need to be smart about conserving water. It’s a practice we need to implement in times of abundance, because we can’t be sure when the pendulum will swing the other way and we’ll endure periods of water shortage.

For homeowners, the biggest consumption of water is typically the irrigation of our lawns and landscaping. Even though Rita and I replaced our Kentucky Bluegrass lawn with Bella Bluegrass, which requires less mowing and watering, we still need to use our sprinklers, although not as much. We would have done better to install buffalo grass, which is not as verdant, but requires zero irrigation and mowing.  (I can provide the address of a home I know in Golden that installed buffalo grass a couple decades ago.)

There are sprinkler systems which adjust the amount of watering that is done based on rainfall and ground moisture, but I haven’t investigated those devices, since I usually am home and adjust our watering according to the weather. For example, this spring I didn’t turn on our sprinkler system until June 1st because of our unusually wet May.

There are other residential strategies for saving water. I have learned to take showers in which I only run the water to get wet and to rinse off, without running the water while washing.

We also installed 1.2-gallon-per-flush toilets, which perform as well as the 1.6-gpf models.  We have a sensor faucet on our kitchen sink which operates like those sensors you’re probably used to seeing in public restrooms. The faucet (by Moen) also allows us to turn the water on and off manually when needed.

We also installed a recirculation line on our water heater, which saves a lot of water by producing hot water more quickly in the kitchen and bathrooms. Think of all the water you run waiting for it to get hot. Not only are you wasting that water, but you paid to heat that water, only to have it cool off sitting in the pipes between your water heater and your sink. You’ll also save energy (i.e., money) by installing such a recirc line. Ask your plumber for an estimate.

High efficiency washing machines are efficient in their use of water, not just energy. Front loaders use less water than the older top loaders, but the new top-loading high efficiency machines, such as our LG unit (the kind with a glass top and no agitator), automatically sense how much water is needed and do an amazing job. We’re glad our front-loading high efficiency washing machine died and had to be replaced!

At the governmental level, I’m surprised that CDOT and other jurisdictions don’t install buffalo grass in the medians and on the shoulders of our highways. Doing so would not only conserve water but save a lot of money on mowing, which can also endanger workers on high-speed highways.

Recently I saw a report on the blue jean industry, which uses an immense amount of water not just to grow the cotton (1,800 gallons per pair of jeans) but even more water to dye them blue!

I expect to learn even more about water conservation and management at this Thursday’s (tonight’s) session on this topic at Golden Real Estate’s office., 17695 S. Golden Road, Golden.  It starts at 5 p.m. and is scheduled to last only 1 hour.  We still have seats available. Email me (see below) or just show up.  The presenter is Ben Wade from the Colorado Water Conservation Board.

If you can’t attend this Thursday’s session, a video of it will be archived by Saturday at www.SustainabilitySeries.info, where you can already find archived videos of the previous five sessions on other sustainability topics.

Please consider coming if you, too, have water conservation or management ideas to share, such as I have done in this column. I’m certainly looking forward to learning things I don’t already know.

Do You Practice Sustainability? Home Renovation Can Be Done Sustainably, Too

Tonight is the fifth in Golden Real Estate’s Sustainability Series. Previous sessions were about home insulation (January), home heating technology (February), solar power (March), and electric cars (April).

This month, the topic is sustainable renovation. Our presenter is an expert in sustainable practices when it comes to home renovation.  His name is Steve Stevens, and he has been my mentor regarding sustainable practices for nearly two decades.

A retired scientist from Bell Labs, Steve has made a lifelong project, it seems, out of reducing the carbon footprint of his 1970s brick ranch in South Golden.

Retired and living on a fixed income, he has developed several habits/practices that are not only sustainable but also have saved him a boatload of money.

For example, he only buys cull lumber from Lowe’s, and he buys returned products (typically mis-ordered) such as windows  and doors, which are then sold for a fraction of their original price.

Steve also seeks out salvaged goods such as windows and doors. As with buying cull lumber and returned products, collecting salvaged products means zero new carbon footprint for doing your renovation. 

Steve, being a scientist by training and passion, always considers the embedded carbon footprint of products, whether it’s food or building materials. How much energy is used to transport the goods you purchase?  For example, are you buying slab granite mined and shipped from Asia, or an alternative material mined or created closer to home?

Steve will share his shopping and construction tips that save money and are also sustainable.

For example, he emphasizes insulation, which should always be your first measure when it comes to saving energy. But what products should you buy, and where should you start?

The session will be held tonight, May 16th, from 5 to 6 pm in the Golden Real Estate office at 17695 S. Golden Road, Golden. There are still seats available. Reserve yours by emailing me at Jim@Golden RealEstate.com. 

Each of our sessions is video recorded by our friend, Martin Voelker, from the Colorado Renewal Energy Society.  You can watch videos of the first four sessions at Sustain-abilitySeries.info.  This session will also be recorded and posted there.

Video Recording of Sustainability Series Session #3 About Solar Power Is Now Available to View

Recorded by Martin Voelker of the Colorado Renewable Energy Society on March 21st at the office of Golden Real Estate.

Electric Vehicle Event on April 20th at Golden Real Estate

Golden Real Estate is celebrating Earth Day by holding an electric vehicle round-up on Saturday, April 20th, from 10 am to 3 pm in our South Golden Road parking lot.

It’s a national event, called “Drive Electric Earth Day,” organized by Drive Electric Week, which is held every September. As with that event, we’re inviting owners of electric cars, trucks and motorcycles to show their vehicles and maybe offer rides. You can register online at www.DriveElectricWeek.info as either an EV owner or attendee

As an extra added attraction, I have invited Best Electric Bikes USA (who sold me my electric bicycle a few years ago) to set up shop and bring some electric bikes for test rides. Research has shown that owners of electric bikes ride more often and therefore get more exercise than owners of non-electric bikes. It’s true for me!