What is the difference in meaning between two sentences?

Question

What is the difference in meaning between two sentences?

1 ) Voltage plays a similar role on the electric system ensuring the stability of power flows.

2 ) Voltage plays a similar role on the electric system in ensuring the stability of power flows.

Does 1) sentence mean "Voltage plays a similar role on the electric system and the electirc system is ensuring the stability of power flows.(Voltage plays a similar role on the electric system that is ensuring the stability of power flows.) ?

Does 2) sentence mean "Voltage plays a similar role on the electric system, because Voltage is ensuring the stability of power flows.(Voltage plays a similar role on the electric system in that voltage is ensuring the stability of power flows.) ?

Answer 1

So the first sentence would mean that voltage ensures the stability of the power flows.

The second sentence means that voltage plays a role, but doesn't necessarily ensure the stability entirely.

So basically the first sentence says that it is responsible entirely (or almost entirely) for maintaining stability, but the second sentence says that it just has a role in it, but is not soley responsible.