There is very little energy efficiency difference between LED and compact fluorescent bulbs. This will make no odds to the power companies (gentailers or lines companies)
Where LEDs win is on durability, they should last much longer.
BTW you can't buy incandescent bulbs anymore, or not easily.
They are still out there.
I watched a kid try to tell her mum that the $7 LED would use 1/5th the power and last 5 years.
Mum responded with "I'm buying the cheapest one" and put the $1 incandescent bulb in the shopping trolley......as she will do roughly ever 3 months for the next 5 years, costing $20 instead of $7.....plus the extra 60w / hour it needs when lit. OK....it's not huge for one bulb, but 10 of them would be 600w / hour x 6 hours / day = 3.6kWh every day....and that's 60c to a dollar tight there, depending on the price......so 60c x 365 x 5 = $1095 *more* for electricity across 5 years than if she had bought 10 x 10w LED bulbs for $70.
If you tried to explain she's wasting a thousand dollars.....she wouldn't believe it.