While weakened by the Power of the Storm, destroy any 15 of the robotic units, except the mechagnomes, in the greater pools area surrounding the Fizzcrank Pumping Station. Afterward, return to Sage Earth and Sky at Taunka'le Village.
15x Robots weakened and destroyed
You now have the power of the storm within you. I will give you the means to focus that power and weaken the robots in the pools.
Take this lightning rod. Use it against the robotic creations of the mechagnomes you find within the greater pools area to the west. Do not worry about using it against the mechagnomes themselves; Greatmother Taiga has other plans for them.
Once the robots are weakened by the power of the storm, dismantle them utterly!