I don't see how you're getting 533k MJ from a single bucket of biofuel. Going by the wiki numbers without the plugin (value of 16000) it comes out to me as just above 290k, but with it doubled it's just above 580k. In fact, I'll bring those calculations from the thread I linked earlier (that I got from the wiki) into this one, and plug in the numbers.

- Base Fuel Usage Per Tick (base) = ( (3.2 - numTanks * 0.04) / ( 16 LP or 8 HP ) ) * numTanks
- Heat Adjust Fuel Usage Per Tick = base + base * (8 - 8 * heat%)
- Steam/tick = ( 10 LP or 20 HP ) * numTanks
- 1 MJ = 5 Steam

So for BFUPT for a max sized HP boiler: ((3.2 - 36*.04)/8))*36 = ((3.2 - 1.44)/8)*36 = (1.76/8)*36 = .22*36 = 7.92

For Fuel Usage Per Tick, based on max temperature: 7.92 + 7.92*(8-8*1.00) = 7.92 + 7.92*(8-8) = 7.92 + 7.92*0 = 7.92 + 0 = 7.92

For Steam/Tick: 20x36 = 720

720 Steam = 144 MJ (18 of the largest steam engines).

So we have a fuel usage of 7.92 per tick. Now, Biofuel has a base value of 16000, so you have to divide that by the fuel usage to see how many ticks that bucket lasts, so 16,000/7.92 = 2,020.2020 (the 20 repeats endlessly). From there we can convert that many ticks directly into steam or MJ, for steam it's 2020.2020*720 = 1,454,545.4545 (you see where that one's going). For MJ it's 2020.2020*144 = 290909.0909 etc. If you have the right forestry plugin (which I don't think is in FTB, but not sure) then those steam and MJ values get doubled due to Biofuel being worth 32,000 instead of 16,000.

Now comes the tricky part. As I mentioned in the other thread, that same bucket can produce about 454,545 EU (going by the 16,000 value) using a turbine. This seems like it's a deal, and considering the mods you might have installed it CAN be. The turbine's lifespan is approximately 41 hours. Now, with 20 ticks a second, 60 seconds a minute, 60 minutes an hour, and 41 hours total, it comes out to 20x60x60x41 ticks, or 2,952,000 ticks of life. During those ticks, at max speed a single turbine can produce 50 eu/tick, which comes out to 147,600,000 EU per 41 hours per turbine. Now, each turbine costs 33 steel to replace. This comes out to 17 iron ores that are then macerated and blast furnaced. For UU Matter, it takes 5 per 2 ores, for a total need of 9 * 5 UU Matter, with a few extra ingots due to the recipe. Now, with the IC2 Mass Fabricator going full blast with scrap, each UUM is 166,666 EU, and we need 45 UUM total, so it comes out to 7,499,970. So just shy of 7.5m EU for 147mil EU in duration isn't too bad. However, Gregtech takes the energy cost for UUM and multiplies it by 100. Now, I'm not sure if the value turns out to be a flat 16mil EU per UUM or if he just makes it 16,666,600 as I haven't used the Matter Fabricator, so I'll just go with the lower 16mil flat. So you'll need 16,000,000 x 45 worth of energy just for the UU M, which comes out to 720,000,000 EU to replenish a single turbine that produces 147,600,000 EU. Not looking too hot now is it? Now, during the time that single turbine is running, you could have three others also running off the same boiler, so you could get 588,000,000 EU per boiler (give or take the extra half turbine it can power, they can power 4.5). In other words, with Gregtech installed even with four turbines running, over the course of all their lives combined you cannot replenish the resources to replace even one of them.

This is why the 1:1 conversion using lava method is superior.