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23 votes

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What types of plugged in electronics use energy even when turned off?

answered Jan 24, 2014 at 14:39

23 votes

Solar energy without the sun: Super LED light on top of solar panels?

answered Mar 22, 2014 at 8:56

18 votes

What are ethical ways to curb the global human population increase?

answered Oct 8, 2016 at 7:00

15 votes

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Practical and cheap ways to get warm at home this winter?

answered Oct 9, 2014 at 10:05

14 votes

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Lowest impact transatlantic crossing

answered Jan 16, 2014 at 8:15

13 votes

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Do switchable sockets left "on" use electricity if there's nothing plugged in?

answered Oct 25, 2014 at 23:47

12 votes

Impact of various travelling options

answered Jan 16, 2014 at 8:24

10 votes

Is eating beef unsustainable?

answered Oct 11, 2014 at 12:46

9 votes

How worthwhile is it to use energy during daylight to take advantage of grid-based solar power?

answered Jul 19, 2014 at 8:12

8 votes

What is the difference between "hydro" and "tidal/wave"? And what is the difference between "solar (heat)" and "solar panels"?

answered Nov 24, 2014 at 10:30

7 votes

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Energy saving lamps suggestion

answered Mar 13, 2015 at 13:00

7 votes

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Investing in Solar Panels in the UK

answered Jun 13, 2014 at 10:33

7 votes

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Is it practical to use an infrared space heater along with a heat pump system?

answered Nov 20, 2013 at 14:42

7 votes

Should I take advantage of the higher heat pump COP during the warmest part of the day and "bank" heat in the house?

answered Dec 2, 2013 at 10:11

7 votes

Options to suggest to landlord for cost savings via renewable energy?

answered Dec 3, 2013 at 10:35

6 votes

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How efficient is it to use an electric car as storage for the energetic overload generated during sun hours (peaks) by solar panels?

answered Mar 6, 2014 at 11:18

6 votes

Oxyhydrogen as home heating method

answered Mar 27, 2015 at 8:23

5 votes

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How feasible would a gas-powered electric-engine based car be?

answered Oct 4, 2015 at 9:02

5 votes

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How much energy costs do portable solar panels save in a house?

answered Feb 24, 2015 at 13:56

5 votes

How can electricity grids successfully incorporate high (50%+) penetrations of PV and wind?

answered Nov 5, 2013 at 21:38

5 votes

How large a solar panel would I need to electrolyse 1 liter of water?

answered Dec 16, 2015 at 15:02

5 votes

Does it make any difference to charge my electronic devices using an USB port?

answered Feb 25, 2016 at 17:15

4 votes

Is "renewable" a proper term for both solar and hydro power?

answered Dec 4, 2016 at 9:58

4 votes

Retrofitting insulation in a 4-storey home. Top down or bottom up?

answered Feb 26, 2014 at 10:51

4 votes

What is the most efficient way to deal with electronic waste?

answered Dec 9, 2013 at 19:33

4 votes

One big container vs multiple small containers

answered Oct 5, 2014 at 7:30

3 votes

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Move to electronic documents

answered Oct 14, 2014 at 9:25

3 votes

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Where are the world's wave resources, beyond the UK and Portugal?

answered Jan 4, 2015 at 11:31

3 votes

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Are there different types of water-source heat pump?

answered Nov 30, 2015 at 7:51

3 votes

Why are electrical cars encouraged but is electrical heating discouraged?

answered Oct 30, 2015 at 23:03

Stack Exchange Network

44 Answers

What types of plugged in electronics use energy even when turned off?

Solar energy without the sun: Super LED light on top of solar panels?

What are ethical ways to curb the global human population increase?

Practical and cheap ways to get warm at home this winter?

Lowest impact transatlantic crossing

Do switchable sockets left "on" use electricity if there's nothing plugged in?

Impact of various travelling options

Is eating beef unsustainable?

How worthwhile is it to use energy during daylight to take advantage of grid-based solar power?

What is the difference between "hydro" and "tidal/wave"? And what is the difference between "solar (heat)" and "solar panels"?

Energy saving lamps suggestion

Investing in Solar Panels in the UK

Is it practical to use an infrared space heater along with a heat pump system?

Should I take advantage of the higher heat pump COP during the warmest part of the day and "bank" heat in the house?

Options to suggest to landlord for cost savings via renewable energy?

How efficient is it to use an electric car as storage for the energetic overload generated during sun hours (peaks) by solar panels?

Oxyhydrogen as home heating method

How feasible would a gas-powered electric-engine based car be?

How much energy costs do portable solar panels save in a house?

How can electricity grids successfully incorporate high (50%+) penetrations of PV and wind?

How large a solar panel would I need to electrolyse 1 liter of water?

Does it make any difference to charge my electronic devices using an USB port?

Is "renewable" a proper term for both solar and hydro power?

Retrofitting insulation in a 4-storey home. Top down or bottom up?

What is the most efficient way to deal with electronic waste?

One big container vs multiple small containers

Move to electronic documents

Where are the world's wave resources, beyond the UK and Portugal?

Are there different types of water-source heat pump?

Why are electrical cars encouraged but is electrical heating discouraged?