Similar to スマートハウス

Convair B-36 Peacemaker

Emacs

Type 97 Chi-Ha medium tank

Post–World War II anti-fascism

North American XB-70 Valkyrie

11 (number)

13 (number)

Energy conservation

80 Plus

Blackle

Corporate average fuel economy

Energy-Efficient Ethernet

Green500

SpeedStep

RETScreen

Worldwide Harmonised Light Vehicles Test Procedure

Start-stop system

Earth Hour

Alkali-metal thermal to electric converter

Alcohol fuel

Power inverter

Energy-efficient driving