Didn't find any info on Telldus products (probably since they are sold mostly in Sweden/EU)
They work with the Generic Z-Wave drivers, but didn't get power reporting with them, so Needed another driver.
But I have had some success adapting this driver :
Had to change some parameter settings etc. But it works fairly well, will probably tinker more before I Make a fork on github. (For an example how do I use the Data in device to make a fingerprint? )
But anyway, this way any others that searches for telldus will find this and get moving like I did.