[T.B. Yoits]

...but does the new battery material burn 20% hotter and longer?

Does it pollute landfills 20% more?

Is it 20% harder for slave children to mine?

[Theoria]

There is always equivalent exchange with energy, either with amount of resources need to extract the product, or in potentials in handling the product for nuclear or use in war. Always a trade off. Free energy would always have a trade off via more homes, more people, and the effects on society, etc.