Is it possible to power all the blocks in a wall?

Let's say I have a 5x5 wall that has redstone torches on each block on one side:

Is there a redstone circuit that would allow me to power every block in this wall, so that all torches turn off ?

I'm pretty new to redstone, so forgive me if this is obvious.

I don't think it's possible, to power a block you need a wire running towards it, which it won't if there is another wire next to it (it'll turn into a corner, rather than a straight line, or a T if there is another wire on the other side).

Here's my best attempt. It lights everything but the middle 3 in the middle row, and you can control each torch independently with clever uses of repeaters to isolate circuits (not in the way I have it screenshotted, though):