an ambient device that alerts people when energy prices are rising or falling. the display conveys the weather forecast, the real-time cost of energy (left bar graph), the current energy usage (right bar graph), & "rewards" for using less energy (star icons?). in addition, the background color shifts from green over yellow to red depending on how expensive the energy is.

[link: & ]

see also David Rose keynote talk.

for more eco-visualizations, see: energy monitoring device & eco-visualization & patterns of energy use & power-aware cord & standby visualization & power socket bar chart & wattson energy display.