I did some testing and found some issues and concerns of mine. First of all Thermal Expansion conduits are not interacting properly with the Power Unit block nor the ZPM. While they do connect they don't transfer power. Unless you put a RF energy cell between. Then the ZPM did transfer power to the cell and the cell to the SG power block. Secondly the recipe for the SG power block is quite steep. Two gate crystals? Block of Emerald (a terrible conductor btw)? It makes no sense that it's more expensive than the DHD. The entire incentive for using one is gone if it's cheaper to run the gate off naqudah or with a regular DHD.

its not working with enderio conduits or any of the expansion conduits either

One part I would like to disagree with is the power usage via the DHD vs. the power block. The power block allows for larger distance reach than the DHD.

Also, I am using gates without DHD's and I need to power them.

Curious about the TE conduits, I thought I had that properly working.

I wasn't opposing the use of the power block. If that's how I came across I do apologize. I'm concerned about the cost. In the lore they managed to power the gate without the use of ancient technology. Hence why two gate crystals seems quite expensive. Ofc I don't know how common the crystals are to find. (Oddly though JEI Villagers just showed 1 Trade for Tok'Ra villagers but it looks like they do sell both kinds of crystal) Greg's SGCraft had a recipe using Thermal Expansion components. A lead power cell and some circuits I believe. Seems more reasonable on a technical level. Perhaps you could implement alternate recipes that checks what other mods you run so you can use EnderIO. TE or some other common tech mod to make it? It is just a suggestion though. I suppose there's always CraftTweaker, if I can figure out how it works.

That's all fine to use computers to dial. Never disagreed with you on that either. But the DHD is considerably cheaper than the Energy block at this time. People would opt for that rather than setting up a computer.

I don't know why it did that. Though I did have a DHD connected (but without fuel) so maybe it took priority somehow? I don't know. I can test it again I suppose.

I did test it again... nope no power going out of the ZPM at all through TE conduits. Not according to the One Probe. Can't dial either due to energy being too low. Surprisingly didn't make my work around work either. Have a feeling the power cell might need a little bit of power first. The issue seems to be the ZPM though. Because a creative energy block could supply the Stargate power block with power through TE conduits. Even tried to see if the ZPM needed a redstone signal... nothing changed there either,

@Dockter This could be related to not throwing a EnergyTileUnloadEvent and EnergyTileLoadEvent for the IC2 Cart and Hub (similar to how IC2PowerTE does it).
I had to do this to get IC2 classic to work properly... without it the only way to draw power was to configure Mekanism Universal cables to pull energy.