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The Sense Home Energy Monitor costs $299 (£240 and AU$390 at the current exchange rate).

$299.00 at Amazon
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Caption:Photo:Tyler Lizenby/CNET
1
of 5

The installation should be handed by an electrician since it requires opening the electric panel.

$299.00 at Amazon
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Published:Caption:Photo:Tyler Lizenby/CNET
2
of 5

Sense tracks your home's energy usage in real time.

$299.00 at Amazon
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Published:Caption:Photo:Tyler Lizenby/CNET
3
of 5

Track the total energy your home is generating at any given time and let Sense detect individual devices for itemized stats.

$299.00 at Amazon
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Published:Caption:Photo:Tyler Lizenby/CNET
4
of 5

The Sense app makes it easy to view your total usage -- but it can take weeks for it to differentiate among appliances.

$299.00 at Amazon
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Published:Caption:Photo:Tyler Lizenby/CNET
5
of 5
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