Eco-Schools

Look at how much energy our solar panels have produced:

 

In 2016 we produced over 9500 kilwatt hour (kWh) and in 2017 over 8500 kWh.

So what exactly is a kilowatt hour?

A kilowatt hour (kWh) is a measure of how much energy you’re using.

It doesn’t mean the number of kilowatts you’re using per hour. It is simply a unit of measurement that equals the amount of energy you would use if you kept a 1,000 watt appliance running for an hour.

So if you switched on a 100 watt light bulb, it would take 10 hours to rack up 1 kWh of energy.

What else takes around 1 kilowatt hour?

 

Here are some rough examples of 1 kWh:

 

• Using a 10,000 watt electric shower for six minutes
• Keeping an immersion heater (3,000 watts) on for 20 minutes
• Cooking in a 2,000 watt oven for half an hour
• An hour’s ironing with a 1,000 watt iron or 45 minutes with a 1,500 watt iron
• Less than an hour using a dishwasher (1,000 - 1,500 watts)
• Around three hours watching a plasma TV (280 - 450 watts)
• Keeping a fridge-freezer (200 - 400 watts) on for about three hours
• Keeping an electric blanket (130 - 200 watts) on all night
• Using a laptop (20 - 50 watts) all day
• Keeping a broadband router (7 - 10 watts) on for five days