Some of these copper pyramids are for sale...I would not recommend that you buy these. I only put these sites up so it would give some people ideas, on how to construct the shape. More of a reference point.
They won't connect to the grid.
You have to built your own, as I mentioned earlier on in this post.

These ones for sale, don't generate the energy.
It's very minimal.
I haven't come across the ones that have a spiral inside the tubes with quartz.

You have to realize the benifits from the pyramid.
It will nullify electromagnetic interference around you.
This can expand beyond your home area. It will tone the balance around your field.
It creates a field that harmonizes your meridian lines that come in tune with the earth energies....There are numerous benifits that will surround your space and energy field.
Once you learn how these energy's start to work, you will start to go deeper into your state of being.