"You know, for all that Transformers are clever cogs, we are an unimaginative lot when it comes to naming things."

The energon storage fields are fields where energon is stored.

Like you're famous for original names.

Fiction

2019 IDW continuity

The energon storage fields were a product of the third article of the Nominus Edict which sought to safeguard planetary energon reserves. Orion Pax: Free Fall

On the cycle where Rubble was killed, he walked by Iacon's energon storage field, marveling at the amount of fuel but noted that the reserves in Tarn and on the Winged Moon put it to shame. The World In Your Eyes Part Five

When the Tether collapsed and fell onto Iacon, the damage caused the energon storage fields to detonate. Arcee/Greenlight: Run Observing this, Megatron dispatched Jhiaxus to Tarn to protect the storage fields there. All Fall Down After the Decepticons seized Iacon, Megatron sent Ratbat to secure the city's energon storage. Despite armed opposition from Grapple and a group of volunteers, Ratbat's Decepticons succeeded. Hunt