The source materials for this
The source materials for this article were extensive. If you really want to pursue this click on the Media Matters link in the second paragraph. They address Chinese and American production of PV panels as well.
Yeah concrete production contributes about 5 percent of the CO2 in the atmosphere. But coal-fired electric generation produces much more. Everything we do uses energy. So we should just consume finite sources until they are all gone before we wonder what comes next?