Open your electricity bill. Really look at it. Is it $150? $250? Maybe $400 or more? Now multiply that by 12 months. That's $1,800 to $4,800 annually just to keep your lights on, your fridge running, ...

Electricity bills have become one of those monthly expenses that seem to climb steadily upward, regardless of how mindful we try to be about switching off lights or unplugging unused devices. Over the ...