I come from Europe and I am old enough to have witnessed the two oil crises of the 1970s (yes, walking on the highways ...). So I have energy saving in my blood
That said, we're generally mistaken by marketing. Yes we have lamps and led lamps are far more economical that filament lamps. But most of our energy consumed is by heating and related use (water heating). The energy consumed to heat water in one month has no common link with energy consumed by led lamps.
So, if you want to really lower your energy consumed, it's better to optimize/replace your heating system. And speaking about this, it's better to insulate your home BEFORE adding/changing your heating unit.
That's because keeping energy [inside your house] can be made at lower cost than producing energy. A good basement/attic insulation will save more money than any led lamp !
OK, in the long run. I agree that purchase a led lamp costs less than a geothermal unit !
But very small things can also be done to save money.
Like insulating the outlets (yep, wind will travel through the tubes and holes), insulating the small gap under your main door, and replace your old garage door (calculate the surface and the ratio of heat going out) with a better insulated one.
Update: Here in Quebec, the electricity company promotes energy star appliances (fridges, washing machines, TV's). At first, strange idea for an electricity company to incitate people to consume less energy. I realized later that if people - locally- consume less energy, they can sell the surplus (at higher prices) to the USA and lower they own costs by not running an additional unit (even here it's mostly hydroelectric dams).
And, btw, you'll probably change your leds before they will go down. Just because you have a new technology around the corner... And you probably have a box, somewhere in your garage, full of CFL and 1st generation led (functionnal) lamps...