Molecular Acceleration

Molecular Acceleration is the powerful ability to make molecules reverberate at a speed which causes them to become disordered, this causes an object to rapidly heat up. As a result of this heat, the power can cause objects to liquefy or burn.

This power is most likely the result of Piper developing a greater level of control over her more extreme Molecular Combustion power.

Piper Halliwell with this power can access the powers Pyrokinesis and Thermokinesis, to create but not control fire, as she can accelerate molecules until they burst into flames.

Piper Halliwell
Piper received this ability in 2008 when she intended to blow up the Source of All Evil who had recently returned in the form of a Golem, melting the road beneath him and slowing him down. She also exhibited the ability to focus this power onto a rope, burning through the middle and causing it to split.