Price: $140 ($80 for the Micro version).
The Owl display seems like the Envi done right. It is in most ways like the Envi, except with a nice, simple, clean display. The display accepts 3-AA batteries which are included, and has a port for a plug (which is not included, but isn't really necessary). It can sit on a flat surface or be mounted on a wall. This key information is easily readable with a high-contrast display and large numbers, and can be switched between $, kW, and CO2 produced. The display also includes temperature, and relative humidity, which is a nice touch. There's no clock or other data to get in the way of why you want an electricity monitor.
Like the Envi, The Owl reads data via sensors attached within the electrical box. The sensor clips, however are very bulky -- far more than any of the other monitors we tested, and large enough that we had to bend the main lead wires a little to make room for the sensors. We had to do a lot of shoving things around to make it possible to re-attach the breaker-box cover. Also like the Envi, 3-phase service is supported with a 3rd clamp, not included.
The Owl sending unit is smaller than the Envi's and has a simple mounting system. It uses 3-AA batteries, included. Setup was easy and quick.
The Owl makes no pretense of storing historical data, so falls into the category of doing one thing well, which I appreciated. That said, the readings, like the Envi were not accurate, reading almost exactly the same as the Envi, which in my tests were more than 10% high.
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