← All glossary terms

Land, Permitting, and Environmental

Special use permit

Special use permit is local approval for a use that is allowed only after discretionary review and conditions. Data centers may trigger special use review due to scale, utility infrastructure, noise, traffic, generators, water use, or community concerns.

Explore more terms

Medium voltage

Medium voltage generally refers to distribution or facility-level voltages above low-voltage utilization levels but below high-voltage transmission. Exact thresholds vary by standard and utility, so Volterra should avoid treating one universal cutoff as definitive.

Read definition →

Current

Current, measured in amperes, is the flow of electric charge. For a given kW, lower voltage generally requires higher current, which drives conductor, breaker, switchgear, and heat-management requirements.

Read definition →

Amps

Ampere is the unit of current. Amps are useful for rack, branch-circuit, feeder, and switchgear sizing, but the formula changes between DC, single-phase AC, and three-phase AC.

Read definition →