Sameer Halai Thoughts, comments, ideas

11Oct/09

Do you monitor your energy consumption?

Puget Sound Energy uses Energy Guide to provide very interesting analytical tools to see your energy consumption. It’s similar to tools by Google and Microsoft, both of which do not work with my PSE account.

I hadn’t noticed this visual before which compares our energy consumption with other similar dwellings in the area:

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I am not quite sure what we are doing better. When I compare it to the same month last year, my total YoY consumption has gone down:

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If we assume no other factors have changed then the main difference seems that we had two more people living with us that month. I remember reading somewhere that hot water consumption is one of the main variable factor in energy bills. Less people means less hot water consumption. Maybe that’s all that makes us “better” than others in our area. If this is true, then just by looking at anyone’s bill in our area one could predict how many people live in that household :)

Maybe it is due to some other changes we have made e.g. I took down my 24x7 FON hotspot last month. I could be wrong, but I remember from my previous calculations that a 24x7 router adds up to around the same energry consumption as a stove-top used twice a day. Time to put the rusty Kill-a-Watt to some use.

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9May/09

Long exposure shows Roomba cleaning path

If you have been following my tweets, I am a big Roomba fan. I have been quite fascinated by the way the Roomba seems to get every part of the room, detects corners to spend more time and energy there etc. The user manual that comes with it tries to explain that the seemingly random motion is actually a concerted exercise in discovering, maximizing power use and efficiency. However, it’s easiest to understand if you look at the long-exposure shot taken by signaltheorist.

The above image shows the entire path taken by a Roomba over 30 minutes. I would really like to see how this looks in a bigger room.

[Doobybrain via Gizmodo]

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6May/09

Why I love my Saturn Ion: A visual graph of my MPG

We have a 2004 Saturn Ion. Check out the awesome MPG we get on it:

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This is real data. From actual data points my wife and I have painstakingly recorded each time we fill up. The spikes in the chart above correspond to road-trips. You can tell by the nature of the spikes that we have not taken more than one-tank road trips lately :(

Predictably, there is a lower MPG in the winter months where you have more stops and slow-downs.

Corresponding to the above, this is how much we have been using our car:

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If you want to record and view data about your car in a fun way like this, head over to http://www.mymilemarker.com

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2Feb/09

FeedFlix: How much does Netflix actually cost me?

 

If you have always wondered if you are extracting your money’s worth from your Netflix subscription, head on over to FeedFlix. Just “connect with Netflix” and it will fetch your data using Netflix’s APIs and quickly give you graphs like below:

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I am paying an average of $0.44 per movie – this includes movies I get as DVDs and those I stream online through my Xbox or Windows Media Center PC. Not bad at all!

[Feedflix]

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