One upon a time, websites had actually useful coupons and RetailMeNot was created by the people who made BugMeNot and it was great, but more and more websites caught on and RetailMeNot was bought out to the tune of $300 million.

Then everything went to shit.

So no change?

A watt is 1 Joule per Second (1 J/s). E.g. Every second, your device draws 1 Joule of energy. This energy over time is called “Power” and is a rate of energy transfer.

A watt-hour is (1 J/s) * (1 hr)

This can be rewritten as (3600 J/hr) * (1 hr). The “per hour” and “hour” cancel themselves out which makes 1 watt-hour equal to 3600 Joules.

1 kWh is 3,600 kJ or 3.6 MJ