I <3 Wattvision

Here, at Wattvision, we know that our sensors are awesome. Our blog posts are usually about us telling our viewers what makes our product great, but for this post we are changing it up. We sharing what our Wattvisionaries have to say about Wattvision. We aren't bragging, we are just excited that other people recognize how awesome we are ;) We just wanted to say thank you and give a shout out too all of our kind and generous users.

We recently closed out our Kickstarter Campaign. One of our lovely users posted this on our page:

"I think this is the best kickstarter I have backed. You guys should be proud of your accomplishments -- I love my Watt Vision."

On our Amazon page, our users send us a lot of love. Here are some of our favorite comments:

"'m totally amazed with the simplicity and at the convenience of this meter! As a owner of a small familiar hotel, i was very worried about the permanent increasing in the energy consumption month by month, sometimes even if we were booked at 50%, the monthly bill comes as if it was full.

After installing this Wattvision meter everything changes... now at my house or at work, i know who, when and how is the energy being wasted. I discovered new things that was not working well at my hotel and now i'am able to correct them thanks to the functionality of "live history". For example rooms that were booked and not reported, this meter help me notice that.

Brilliant application, brilliant product... and the best is the fast and agile customer service when installing. We are very very happy. Thanks Wattvision!" - Habitia Suites

"I purchased a Wattvision Analog energy sensor back in April 2012 to get a better handle on electricity use in our home. Installation of the sensor onto our meter was a snap, especially with the help of instructional videos from Wattvision.com. The people at Wattvision were extremely helpful and responsive every step of the way. After noticing slight inaccuracies in our sensor data , they correctly diagnosed a problem and provided a customized sensor replacement that is now 100% accurate. Each week, Wattvision sends a summary of the previous week's usage. I also find downloading my data from their website into a spreadsheet helps me understand the trends in our energy use month to month. Very highly recommended."- John 

"I love this little gadget. It's fun. It's easy. It's incredibly precise and can detect changes as low as a few watts. It took less than ten minutes to install and set up. I like how compact it is and that they don't sell you any unnecessary junk. I can see my power use via any web-connected computer. I can see it via my Android phone. I can download data for detailed analysis. It was very cool to call home one day and ask: "Did you just start the laundry? I can see that power use just jumped up by 5kW!" This has been a great tool to search out, identify, and document power wastes in the house. By looking at the time and duration of energy use, it's quite obvious what are significant power uses and what are not. The little intra-user energy savings competition they've got going is fun motivation, too."- Ted

"I purchased the Wattvision monitor after having problems in not being able to zero out my electric bill. I have a 4.2 kilowatt solar system on my house and I have always had a electric bill. The bill was around $300 a year and I should have been able to had no bill. I purchased the monitor to help me see where I could fine tune my house. I found by replacing light bulbs to florescent lights in the bathrooms and installing timer switches that my problem was almost fixed. The other area I found that was burning electricity was my outdoor lighting. I changed the incandescent Malibu lights out to the new led ones. With these few changes I now make more power than I use. I even have a $78 credit for the extra power we have made. At the end of the year my power provider will cut me a check when I true up. I have had the Wattvision monitor for 4 months now and 4 months of no electric bills.

Thank you Wattvision for helping me meet my goal."-Brandon D

"I love learning about my home energy use. For the first week I tortured my wife, going around turning on an off just about everything in my house to see how much power it was using. I started taking military showers after seeing how much my water heater cost. I confirmed that my variable speed pump was saving a boat-load on my pool circulation costs. I also learned that my well sprinkler pump cost more than I thought, prompting a schedule change.

I can't say whether it has paid for itself yet, but knowing more about my home energy use has certainly opened my eyes. I am certain that the payback on this item is worth the investment.

Installation was easy. I did a half-baked installation, running the wire through a crack in the window sill. I plan to drill a hole this weekend because I have decided to make the installation permanent.

The website is great and the installation procedure is straightforward. I was able to set it up with my iPad!!! No computer necessary! Also, the chart updates every 10 seconds in the iPad and iPhone browser, so I don't need to lug my laptop around the house while testing things out."-Jay

We just wanted to recognize the kindness of all of our users, and hopefully provide other users with some useful information about Wattvision. If you too are satisfied with your Wattvision use, or have and concerns, please feel free to comment on this blog post. Also, if you have an interesting Wattvision story that you would like to share with the community, please email it to sara@wattvision.com

Wattvision Featured in Town Topics

In this week's edition of Town Topics,  Wattvision's work with Sustainable Princeton is featured. Labyrinth Books, One Monument Hall and Witherspoon Presbyterian Church  are all participating in Sustainable Princeton's EnergySmart Buildings Campaign. The goal is to track energy use in  a canvas of buildings using Wattvision software. Wattvision was chosen for this project due to our experience in tracking data in Princeton University Residence halls and at at Stony Brook-Millstone Watershed. For more information, you can read the article at towntopics.com or on Pg 9.

Wattvision Partners with Sustainable Princeton to help Witherspoon St Presbyterian Church save energy

Yesterday afternoon, Wattvision and Sustainable Princeton visited the Witherspoon St. Presbyterian Church to help them track and reduce their energy use.

Denise and Jim of the Witherspoon St Presbyterian Church are trying to make the facility as energy efficient as possible.  They were looking for ways to save money on their energy bill while also becoming more sustainable, so they called in the big guns. Wattvision and Sustainable Princeton came in to save the day, one watt at a time.

Sustainable Princeton is installing Wattvision sensors on a few Princeton-area facilities.  The project, spearheaded by Christine Symington, seeks to inspire energy efficient changes in the community.  Wattvision will allow facility owners to directly track savings as a result of changes and audits, and receive alerts if anything changes.  The church will use Sustainable Princeton's energy saving tips to their full advantage. 

If any other local business is interested in sitting down with our team and talking about how Wattvision can save you energy please email sara@wattvision.com

Pictured from left to right: Denise, Jim, Christine, & Alexis

Wattvision + SmartThings

 SmartThings now supports Wattvision.

SmartThings is an app that allows you to control your home through your smartphone. You can turn on and off lights in your home, control the temperature, keep track of your pets, open and close your garage, etc. from anywhere in the world. Now, if your home is set up with SmartThings and you are a Wattvision user, you can track your energy usage on the SmartThings app.

Linking Wattvision data to the SmartThings app is simple

Read more »

New Feature: Share via Direct Link

When viewing your house, you can now share via an "unlisted link" -- meaning you can share your wattvision data with users that do not have wattvision logins.

As the owner of a house, you need to activate this feature by clicking on the SHARING tab and pressing "create share link".

You can also deactivate the link once you've created it, locking out anyone that you previously gave access to.

We're just trying to make it easy for you to share and explore your Wattvision data!

Princeton student to analyze energy data

Exciting! A current student a Princeton is going to analyze anonymized energy data from Wattvision to determine if our users could save money with different rate structures.

"I hope to compare anonymized electrical usage data with historical prices to see how residential electricity bills would change if utilities used different pricing structures. The goal is to see which pricing structures provide the most benefit to users by improving the efficiency of the current rate design and offering incentives for conservation. Also, if possible, I would like to try and study how these changes impact different demographics."

In more simple terms: I want to see how people's electricity bills would change if they didn't pay just a flat rate for electricity. Specifically, which pricing methods allow people with good conservation habits to save the most money, and how they would impact different demographics. 
- Sharon Gao '15

Contact us at info@wattvision.com with questions!

WV Team

2015 Super Bowl Power Analysis by Ted Borer

Guest poster Ted Borer, long-time Wattvision fan and supporter, wrote up the following detailed writeup on the Princeton U Campus energy use, his home's energy use, and the regional electrical grid's usage, during Superbowl XLIX.  It's super interesting, check it out!

The 2015 Super Bowl Power Analysis – Now with a value-added look at residential electricity use!!

Previous general comments can be found in the SPEE academic paper.

What can we learn from last-night’s game in particular?

1.       DO hire Matt Flynn if you need to catch an oblong flying object, in any position, ever. DON’T call a passing play with half a minute on the clock, trailing by a couple points, and only a few yards to go. Okay we got that out of our system.

2.       This game is important to a lot of people. For about five hours the Pennsylvania-Jersey-Maryland interconnection needs to supply about a hundred million watts more power than on a different but comparable Sunday evening. That’s a LOT of energy.

3.       People use a lot of energy very briefly about ten minutes before the game. You can picture millions of microwaves, and refrigerators, and sinks being used as people prepare food and drinks.

4.       Almost everyone leaves the TV on for the whole game. So power spikes indicate boredom or hunger when people leave the TV room and operate some additional appliances.

5.       Although people enjoy the advertisements, more people leave the room during advertisements than during the game.

6.       College students care a little more about the half-time show than the PJM interconnection does as a whole. In PJM a higher % do other activities during half-time.

7.       When Seattle got a field goal followed by an interception and a touchdown shortly after half time, a lot of people on campus stopped other activities and focused on the game. These major events caught their interest.

8.       From 9:02 to 9:20 there were a LOT of advertisements. Students focused on these and used less power. In the PJM area, people walked out and did something else.

9.       When the Patriots got their third touchdown, people thought the game got more interesting and went to get more food or clean up during the ads, but didn’t turn off the TV.  When the Patriots got their fourth, everyone sat still to see how the game would end. Very little other activity happened until the game ended.

10.   As soon as the game was over, people went out to clean up the kitchen, run the dishwasher, and get ready for bed. There was a similar power spike as soon as the post-game award stuff began.

11.   Most people shut off the TV before 11:00.

12.   Ditching Roman numerals for Super Bowl “L” is a good idea.

13.   NOTE: To make the PJM graph easier to graph and more obvious, I subtracted the overall trend of declining power use through the evening. What is shown on the graph is the incremental additional energy use above the overall trend.


What can be learned from a super-granular look at our single-family home?

1.       Electric heating elements turn on and off. They do not modulate. They run steadily at full power until their temperature set-point is met, then they cycle on/off to maintain that set point. You can observe this with the coffee maker, stove, oven, and poultry water heater. You can see that the oven ran at full power as it was warmed-up from 6:45 – 6:58, then began to cycle to maintain temperature. The oven heating elements are probably about 2300 Watts. The coffee maker is about 2000 watts. The poultry water heater is probably about 1500 Watts. About 7:40 the oven was opened several times to remove food. It operated about 15 minutes at full power before reaching and maintaining set-point. We turned it off at 8:18.

2.       We do take advantage of advertisements to use the bathroom and get more food.

3.       There were about 250 Watts worth of stuff that we could have turned off several hours before we did (computer equipment and many lights around the house are not offering benefit while we’re watching TV).

4.       NOTE: To make the household trend easier to graph and more obvious, I subtracted the heat pump and fan energy use. What is shown on the graph is the non-HVAC energy. Assuming that heating the house is not optional, this is more representative of the optional energy use.



1.       Pay attention to your energy use. It is interesting. It is important from the standpoint of both financial and environmental stewardship.

2.       Study energy use in super-granular detail and superimpose what you know about the system.

3.       Learn what uses a lot of energy and what does not use much.

4.       Learn the patterns of energy use.

5.       To save money and environmental impact, reduce or eliminate low-value activities.




Ted Borer, PE, CEM, LEED AP

Princeton University

Energy Plant Manager

MacMillan Building, Elm Drive

Princeton, NJ 08543-2158

Ph:(609) 258-3966

Fx:(609) 258-1508

Cell: (609) 731-2327

Home: (609) 466-3322