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Energy Monitors Curb Your Consumption

October 19, 2009 By: Anna10 Comments

CurrentCost-Monitor

Brendan Gill of Plentyways contributed the following post to Green Talk  about the benefit of Energy Monitors to reduce your energy consumption.  I asked him to write about this topic since I, myself, grapple at which monitors to use.

The idea behind energy monitors is that you measure and graph the total amount of electricity that your home is using.  The problem today is that utility bills are too far removed from the actual appliances using electricity.  When we receive a bill for $200, we don’t know how much of that is down to the washing machine or the kettle, or what strategies would most effectively reduce our energy usage.  However, with an energy monitor we can view in realtime how much electricity we are using and learn about the energy use of individual appliances also.

With this knowledge it makes it a lot easier to start to reduce your energy usage.  Using an energy monitor you will notice huge peaks when you run the dishwasher, for example, so you will quickly realize that it is a good idea to minimize its use and decide not to run when it is half empty. Indeed a recent study from the  University of Oxford found that the mere presence of an energy monitor had the effect of reducing people’s energy usage by 5-15% on average simply because people became more aware of the amount of energy they were using.  In short: using an energy monitor will save you money and help the environment.

So, what options are available?

Energy Monitor Devices

The most common energy monitor devices are physical units that work by placing some kind of clip around the main electricity line as it feeds into your home energy meter.  Don’t worry, it’s not an electrical connection it simply cradles the wire and measures the magnetic field.  However, it is a good idea to read the instructions thoroughly and use an electrician if you have any doubts.  The device can then tell how much electricity is being used in your home at any time.  Most good energy monitors will come with a wireless, handheld device which you can place anywhere in your home and it will display key stats such as current electricity usage, average for the day and average for the week etc.  Usually you can enter the amount you page for each unit of electricity (find this on a recent utility bill) and it will calculate how much your current energy use is costing you.  Many will come with software so that you can create graphs and investigate the data in more detail.  Examples of these are Onzo and TED.  They can cost around $200 but you are likely to recoup this money through reduced electricity bills within a few months.

Plug Load Monitors

These are similar energy monitoring devices but the difference is that they will just monitor the electricity used by a single electrical output as opposed to your whole house.  They will sit in between a plug and a socket and display the current amount of electricity being drawn through that socket.  The advantage of these is that you can get a direct, accurate reading of individual appliances.  Using a whole home energy monitor to measure an individual appliance can be tricky unless the appliance creates a very distinct peak when you switch it on, so individual appliance monitors are useful.  They start at around $25 (e.g. Kill A Watt) so can also be a much cheaper route.)

Smart Meters and Energy Dashboards

Part of the reason that energy companies don’t offer you a detailed breakdown of your energy usage is because they actually have difficulty accessing that data.  However, there is currently a trend to what is known as the ‘smart grid’ where energy companies have the ability to track in real time the energy being fed into your home.  This enables them to provide customers with a dashboard that displays detailed real time energy usage data, usually via a website.  The result is similar to the home energy monitors we talked about above except that in order to use them the consumer doesn’t have to install any devices as the data collection is all handled by the smart grid.  Although few electricity providers are set up to provide this service at present there is a definite trend towards this.

google-powermeter-graph

Example of data generated from the Google PowerMeter software.

Google PowerMeter

Google have recently got into this game with its new PowerMeter software.  It is partnering with energy companies to provide an energy dashboard for consumers.  If the energy company can move to the ‘smart grid’, Google will provide the software that allows you to view your real time energy usage data and even access this from your mobile phone.  At the moment it is only available with these select energy companies, but look out for PowerMeter in the future.  Knowing Google, there will be some very special features.  If you can’t wait, then  you can get a Google PowerMeter if you purchase the TED 5000 energy monitoring device, which integrates with Google’s software.

Readers, I have really enjoyed reading Plentyways’ blog and encourage you to visit it.  If it wasn’t for Brendan, I would never have learned about the GooglePower Meter.  Also, while you are visiting the blog, pop over to see what they are selling on their  e-green-commerce site.  There are “Plenty ways” to be green!

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About Anna

Anna Hackman is the editor of Green Talk, and owner of The Naked Botanical and a avid (okay obsessed) gardener. She also loves video and podcasting and hosts Green Talk TV and Green Talk Radio. Her most important role is being a mother of four boys.

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Comments

  1. 2

    Luc J says

    October 20, 2009 at 11:58 am

    Great tip! I didn’t know that there were meters that you could clip around the main electricity line without actually touching it. I suppose that you can clip those around any power cord as well for short checks of specific devices. Will try that out when I can lay hands on one.
    .-= Luc J´s last blog ..Secure USB Flash Drive – Personal Pocket Safe =-.

    Reply
  2. 3

    Brendan @ PlentyWays says

    October 20, 2009 at 5:06 pm

    Thanks Luc, and thanks Anna…

    Yes, it is reassuring to know that you can install a power monitor without having to run the risk of an electrical shock. I’ve ordered a TED 5000 so that I can test it out with Google PowerMeter software. I hope to monitor the energy usage in the PlentyWays office 🙂
    .-= Brendan @ PlentyWays´s last blog ..Top Green Stories this Week =-.

    Reply
  3. 4

    Sarah Bailey says

    October 21, 2009 at 4:19 am

    Another easy thing to do is try an energy management software. For about 15 minutes a month, you can use GreenQuest.. for free… to track and manage your energy usage. The awareness of seeing how much you’re using, tracking greenhouse gas emissions, comparing to your peer group, and seeing your bill go down each month compared to previous years, is definitely worth the 15 minutes. Learn more about GreenQuest at http://www.mygreenquest.com or watch a really good video (that is new!) about GreenQuest at http://www.mygreenquest.com/video

    Reply
    • 5

      Green Talk says

      October 21, 2009 at 8:09 pm

      Sarah, can you tell us more. How do you physically track your energy consumption vs using a a meter? Anna

      Reply
  4. 6

    Peter Porteous says

    October 26, 2009 at 5:31 pm

    I read your post today “Energy Monitors Curb Consumption”. I couldn’t agree more with your conclusions. Blue Line Innovations offers another technology option to the CT clamp technology – a wireless sensor that passively attaches to the meter outside the home. We are a proven technology – been around since 2004, +100,000 PowerCost Monitors on the market, producing the Black & Decker Power Monitor, etc. As mentioned the PowerCost Monitor is a passive technology that attaches to the exterior of the meter outside the home and acquires the data through optical readers (sensing either the rotation of the analogue/disk meters or the infra red watt meter pulse associated with the newer digital meters. The signal is then transmitted wirelessly to a portable LCD display in the home. This approach allows universality with meter types and is designed to be a self install by the home owner (15 minutes) therefore not requiring the cost associated with an electrican installation.

    This is a powerful topic. There is lots of buzz about the Smart Grid – it’s real and it’s important but its a tomorrow solution. Real time energy reporting can make a significant impact on energy consumption TODAY.

    Peter Porteous – CEO Blue Line Innovations.

    Reply

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  3. Tweets that mention Energy Monitors Curb Your Consumption | Green Talk™ -- Topsy.com says:
    October 21, 2009 at 5:06 am

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    October 22, 2009 at 7:19 pm

    Social comments and analytics for this post…

    This post was mentioned on Twitter by ecocanteen: Stuff I’ve found…: Energy Monitors Curb Your Consumption: Brendan Gill of Plentyways cont.. http://bit.ly/5mHyM…

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