save energy

Save Energy by Charging Devices Through Your Computer

jplatt — Thu, 30 Apr 2009 08:00:00 -0400

How many devices do you have on your person or on your desk right now? Sitting in front of me today, I've got my cell phone, camera, and iPod -- plus all of their respective chargers. I chage most of them by plugging them into wall sockets, but a new study says that might not be the most efficient use of energy.

It turns out that most of our external AC/DC power supplies are only 30-40% efficient. While a device is charging, 60-70% of the energy is wasted -- leaked out of the power cord instead of going into charging our electronics.

A solution? Charge your device through your computer. According to the 1394 Trade Association, using FireWire cables or USB cables to charge your devices are not only 85% efficient, they are also often faster.

Of the two, USB cables are much slower -- FireWire is 18 times faster, according to the 1394 TA (which is, after all, the industry trade group for FireWire).

Of course, out of all of my portable devices, none come with FireWire cables and only two (my iPod and my camera) come with USB cables capable of charging the gizmos. But if I had more of the right cables, and especially if the manufacturers supplied me with them, I'd be more inclined to charge everything while I'm working on the computer.

Will this work for you? Your mileage may vary, but still, it's something to consider as you're going about your day and as you're buying new electronics.

Cut Emissions 88% by Downloading Software

jplatt — Thu, 23 Apr 2009 08:00:00 -0400

I had to buy some new software recently, and when I did I found that I had two options: have the program shipped to me or download it directly to my computer. I chose to have it shipped. Boy, did that turn out to be the wrong decision.

According to a recent survey by Microsoft, in cooperation with Accenture and WSP Environment and Energy, downloading a single program saves the equivalent of a gallon of gas.

The savings comes not just from shipping costs, but also from the manufacture of software disks and packaging.

Microsoft initiated the study so it could visualize the impact of its Office 2007 suite. They found that 80% of their sales came from traditional retail outlets. If they could convince those 80% of buyers to download the program instead, it would be the same as taking 13,008 passenger cars off the road for one year.

The ultimate message: "Through electronic software distribution, technology companies, like Microsoft, are supporting the transition to a low-carbon economy."

So think about that the next time you need to order a program. Do you really need that CD-ROM to sit to on your shelf for the next five years, or will a simple download do the job? I'm guessing "Download Now" is going to be your best option.

HP Offering Free 'Green IT for Dummies' Guide

jplatt — Fri, 17 Apr 2009 08:00:00 -0400

Studies have shown that companies can decrease their IT costs by embracing "green IT" techniques, all while increasing their IT power.

Do you think your company might benefit from green IT? If so, then HP has something for you: a free, limited edition "Green IT for Dummies" pocket book.

Created as an introduction to help organizations go green, the guide offers "simple and straight-forward ideas on how to reduce the environmental impact of IT systems and harness the power of IT to reduce the wider environmental impacts of climate change in society"

If order to get your free book, you need to answer two brief questions on HP's website:

a) Does your company have a specific Green IT plan?
b) Which function is responsible for achieving that?

Okay, so this is basically a sales tool to get you to buy HP's services, but hey, free is free. So if your company would benefit from going greener, answer those questions and get your free book. You never know, you might learn something.

Get Ready for Spring with an Electric Lawn Mower

jplatt — Tue, 14 Apr 2009 09:00:00 -0400

Well folks, Spring is in the air, and so is the pollen. The grass is getting greeners, and starting to get tall. Any day now, it will be time to start mowing the lawn -- if you haven't started already!

But did you know that lawn mowers contribute to an amazing five percent of pollution and climate-change emissions in the United States? Yikes! That's a lot of dirty air for the pleasure of a green lawn.

Now, gas-powered mowers will need to be much more efficient and less polluting in a few years, starting in 2011, when the EPA will require new mowers to have 35% fewer emissions than today's models. But you don't need to wait until 2011 to lower your own impact on the air, and on the planet.

Electric mowers -- there are quite a few models on the market -- use less energy, produce fewer emissions, make less noise, and provide an excellent cut to your finely manicured lawn. Hand-powered push mowers are even better, offering zero emissions while you get lots of good exercise!

Want to see a wide selection of electric and push mowers? Check out Clean Air Gardening for dozens of models, plus tons of other great gardening supplies. Or try your local hardware store -- you might be surprised at what is available right around the corner.

PepsiCo Introduces Greener Vending Machines

jplatt — Fri, 10 Apr 2009 08:00:00 -0400

Soda giant PepsiCo announced recently that it will soon deploy a small number of “green” vending machines that will "significantly cut pollution compared to standard vending machines."

The new machines -- which employ Greenpeace's Greenfreeze technology -- not only require 15% less energy than traditional vending machines, they do not use fluorocarbons or "F-gases," "greenhouse gases hundreds to thousands of times more powerful than carbon dioxide that are one of the major causes of global warming and are currently used in almost all U.S. refrigerators and air conditioners."

According to the Intergovernmental Panel on Climate Change, F-gases are currently responsible for 17 percent of global warming.

Now, Pepsi is only introducing 30 of these machines to start, since the Greenfreeze technology doesn't yet have EPA approval. But they do hope to roll them out around the world, where the company has a between 4 and 5 million vending machines and coolers.

You can read more about PepsiCo's environmental sustainability initiatives here.

Letting Your Computer Idle Costs You Money

jplatt — Fri, 03 Apr 2009 08:00:00 -0400

Do you shut your computer down when you walk away from it, or when you go home for the night? According to a new study, only half of American workers turn their computers off a night. In addition to burning electricity and adding more greenhouse gases to the atmosphere, it's estimated that this costs businesses $2.8 billion a year to power the 108 million unused machines left on every night.

Ouch.

So what are the lessons from this? First of all, turn your computer off at night or if you're going to be away from it for more than a few minutes. Anything else is wasteful.

Second, make sure your comptuer's sleep mode is activated. Most modern PCs use a lot less energy while they're "hibernating," but only if you don't turn these energy-saving features off first.

Third, if your company has a lot of computers, look into automated power-down software -- such as PC Power Down -- that will shut off all of your idle computers after the end of your business day.

Fourth, go commando! If you're leaving for the day, and you notice someone else left their computer off, turn it off for them! It could be the easiest act of environmental activism your have ever done.

Now, go turn off your PC and take a walk!

Don't Forget Earth Hour This Weekend!

jplatt — Fri, 27 Mar 2009 08:00:00 -0400

Who knew the brightest idea in fighting climate change was sitting in the dark?

This weekend, people around the world will turn off their lights for one hour to show their support in the fight against climate change.

The Earth Hour event takes place this Saturday, March 28th. Everyone who signs up is encouraged to turn off every light in their homes from 8:30-9:30 pm (that's your local time).

Earth Hour started two years ago, when 2.2 million people participated. This year, sponsor WWF is trying to take it to the next level, with a goal of 1 billion participants in 1,000 cities. So far, they have signed up more than 1,100 cities in 80 countries.

Time is running out, but there's still time to sign up for this year's event, so go ahead and send a message about our impact on the planet and fight climate change!

At Last, a CFL That Will Work in Any Lamp

jplatt — Thu, 26 Mar 2009 08:00:00 -0400

One of the major complaints I hear about CFL bulbs is that you can't attach a lamp shade directly to them, like you can with old-style incandescents. Well, GE has finally gotten around that little problem, so it's time to switch those last of your lamps over to CFLs!

Yes, the GE Energy Smart® compact fluorescent light (CFL) bulb is billed as the "world's first truly incandescent-shaped" Energy Smart® CFL bulb. The 15-watt bulb produces the same amount of light as an old 60-watt incandescent, and lasts for 8,000 hours. It's guaranteed for five years based on four hours of daily use.

The bulb went on sale at Target stores in December and will be available worldwide this Earth Day (April 22).

Don't forget, incandescents are being phased out starting in 2012, and some retailers (like Wal-Mart) are already dropping them from their shelves, so it looks like innovations like this are coming around just in time.

A bright idea, indeed!

What is a Smart Grid?

jplatt — Thu, 19 Mar 2009 08:00:00 -0400

President Barack Obama's economic stimulus plan includes US$4.5 billion to create a "smart grid" electrical transmission system. But many people still ask, what exactly is a smart grid?

Basically, a "smart grid" really is just that -- it's a smarter version of our national energy grid that uses advanced communication tools and a whole new range of computing technologies to make the transmission and distribution of energy more efficient.

The first step would involve deploying an infrastructure that will automate electricity metering. This is more than just putting the guy who comes to your house to read your meter out of a job. It creates a two-way communication system between customers and utilities, allowing everyone to see how much their energy use is costing them on a second-by-second basis. For instance, you'll be able to decide if you want to run your dishwasher in the afternoon, when rates are higher, or at night, when you can see that rates are lower.

The smart grid will also improve the adoption of renewable energy sources. Let's say you install solar panels on your roof, and they actually generate more electricity than you need. With a smart grid, you'll be able to sell your excess energy back to the utility and upload it into the national electrical grid.

It will also make it easier to generate electricity from wind and solar in one part of the country, and then transmit it thousands of miles to a completely different part of the country. That's not possible with today's antiquated grid, which is not set up to transmit energy long-distance.

Theoretically, a smart grid would create enough efficiences that it would actually reduce carbon emissions by 25%.

We're not going to see a smart grid tomorrow, but this technology isn't too far off, if we allow it to come to being. All it takes is willpower, and a lot of money. But think of what we'll save when it comes to pass.

Which Is Greener: Shopping Local or Shopping Online?

jplatt — Fri, 13 Mar 2009 09:00:00 -0400

Shopping locally uses less energy, right?

Not necessarily, according to a study by Carnegie Mellon's Green Design Institute. The study looked specifically at Buy.com's e-commerce model, and found that shopping online through that site "reduces environmental impact with 35 percent less energy consumption and carbon dioxide emissions than what is produced in the traditional retail shopping model."

Obviously, this isn't going to work for every online retailer, or compare to every brick-and-morter store in your area, but still, these results are surprising.

The study found that "approximately 65 percent of total emissions generated by the traditional retail model stemmed from customer transport to and from retail stores." This could change if you drive a hybrid or ride a bike (or god forbid, walk to the store!), but it does illustrate the effect of short drives on our environment.

Buy.com also has a unique element that reduces its carbon footprint. If you order something from their site, it doesn't ship from Buy.com, but from the company that made the product in the first place. By comparison, Amazon.com maintains huge warehouses; products must first ship there, after which they get shipped to customers. Buy.com's model cuts out a step, and saves emissions.

So, while this study shouldn't necessarily cause you to change your buying habits, it does give us some ideas to think about when shopping. Every time a product moves from one place to another, it inspires the release of greenhouse gases. The fewer times it moves, the better. So if you can buy a product that hasn't moved very far or very often, you'll be doing yourself -- and the environment -- a favor.