I don't know how you have your pack setup though. I run with everything on the hardest recipes/configurations. I don't know if that would cause the RF loss in the steam dynamo. I just wanted to figure out if this power loss is on purpose or it is a bug that needs to be addressed. What you have to do to see the power loss is....take 1 steam dynamo and a energy cell. Run the steam dynamo until its internal RF buffer is full. Put a lever next to the steam dynamo and flip it so the dynamo is off. Then connect to your empty energy cell. You will notice the Steam dynamo's buffer just drains and does not output it into the energy cell.
Each steam dynamo has 40,000 RF internal buffer. So if your using more than 1 and trying to conserve fuel/resources. It does not really work. I understand i could just build a tree farm/charcoal producer to keep the dynamos stocked. But then i am just wasting resources to keep them running. Or i could just upgrade my dynamos to magmatic, compression, or reactant ones. I just want to know if that power loss is intended. Thank for your reply though.