Hiya,
I use 2x 300w LEDs in flower and its 20e per month on the ESB. And that 20e covers the fans, dehumidifier, and fan controller too. I grow on a very small scale, in a 2x2x5 tent, it's the full-house 500 plant jobs or warehouses that causes electricity spikes.
I agree with "Tell No one." You know what it's like here, you'd prefer the Gardai coming thru your door than a load of masked up scum.
Afaik, the penalties are the same for 1 or 3 plants. as in, 3 plants or under are seen as personal use, provided you don't have baggies or a tick list. If anyone does accidentally find out, tell them they died and you sold your stuff. I find people quite begrudging of any success in this country.
I buy seeds, and as much as possible in person with cash at the shop whenever I can get to it.
I just started 2 photoperiod kush n cheese, so I'm going to start me 1st diary today, they stuck up outta the coco this morning
So i'll be keeping an eye out for your journal , Best of luck with it!