Supply and demand

In economics we are learning about supply and demand. Supply is the blue lineand demand is the red line. Supply means the consumers point of view and demand is the producers point of view, but thats what i think and the equilibrium point is the intersection point.

Eco houses

Insulation,

For some good Eco houses it is would be good to have polystyrene insulation,

Power,

For power i think it is best to have solar panels because it is not using any electricity from power stations which is good.

Aspect,

Lighting,

i think it is way better to have energy efficient light bulbs because it uses 80% less energy than normal light bulbs.

Hot water,

i think i would use solar panels to heat up the water because it is more efficient,

and here are some pictures of how they work:

This is called the "open loop.": This is called the "closed loop.":

Heating,

Underfloor,hydronic water heating because it wouldn't be using electricity and gas so it would prevent global warming.