Abstract: An electrical connection system 200 comprises a rail 202 and a plurality of electrically conducting posts 204 fixed to the rail 202. The rail 202 is in the form of a tube or rod provided with complimentary electrical connectors 208 and 210 at opposite ends. Each post 204 is coupled to a rail 202 by a short transverse link 205. A fitting 216 is provided at a free end 206 of each post 204 to facilitate mechanical and electrical connection with a through hole terminal. Pairs of rails 202 may be disposed side by side to form nominal positive and negative rails with the posts of the rails 202 interleaving each other and in mutual alignment. In some instances, photovoltaic tiles 10 that include holes 28 and 30 forming conductive terminals are fitted over posts 204.