Well, if you want it for power you can burn it up in a steam boiler, but you would need a ridiculous amount of coke ovens.
To elaborate on that statement:
If you are playing on 1.5.x, a 1 LP boiler will run 607.6 seconds on one bucket of creosote oil; on 1.4.7, it will last only 405 seconds. A coke oven needs 180 seconds to complete an operation and will produce 0.25 (wood->charcoal) or 0.5 (coal->coke) buckets of creosote during that time. So in both cases, one coke oven making coke or two coke ovens making charcoal is enough to supply the boiler if it is fully heated up (though under 1.5.x you'll be making a lot of excess).
A 36 LP boiler will last for 30.3 seconds on a bucket in 1.5.x, and 20.2 seconds on 1.4.7. That means 24 coke ovens making charcoal, or 12 making coke, is enough to supply the boiler in 1.5.x, and 36/18 under 1.4.7.
With 24 coke ovens making charcoal under 1.5.x, you could drive 20 1 LP boilers for a total of 40 MJ/t, or about 1.6666... MJ/t per coke oven (not counting what you can do with the charcoal). If you used the single 36 LP boiler, you would get 72 MJ/t, or exactly 3 MJ/t per coke oven (again not counting what the charcoal can do).
So what can you do with 24 charcoal every 180 seconds? Run another 36 LP boiler off them, and then be just shy a little for another 8 LP. If you supplemented the 8 LP with two extra wooden planks every 180 seconds (or built just one more coke oven), it'll be enough. That's another 88 MJ/t, for a total of 160 MJ/t (or 6.6666... MJ/t per coke oven).
So yes, it's a big infrastructure investment, but it can actually run pretty well under 1.5.x.