Underpowered lighting rigs kill events—blown circuits, dimmed stages, and frustrated crews are expensive mistakes. Understanding your power requirements before hiring or buying lighting equipment prevents disasters and keeps your budget realistic. This guide walks you through calculating what you actually need.
Why Power Matters in Event Lighting
Event lighting consumes far more electricity than most planners expect. A single 2.5kW moving head, multiplied across a 16-unit rig, plus LED washes, strobes, and control systems, can easily demand 40–60 amps at a mid-sized venue. Underestimating power availability often forces you to rent additional power distribution, upgrade venue infrastructure, or compromise your creative vision mid-event.
Understanding Lighting Equipment Power Draw
Different fixture types have wildly different power signatures:
- Moving head spots (clay paky, martin): 1.2–2.5kW per unit
- LED Par 64 equivalents: 150–400W per unit
- Intelligent LED wash lights: 300–600W per unit
- Conventional fresnels and pars: 500W–1kW per unit
- Strobes and effects: 300–800W per unit
- Control consoles and dimmers: 2–10kW depending on scale
- Fog machines and hazers: 400–800W per unit
A typical 8-hour corporate event with a modest rig (12 moving heads, 20 LED pars, 8 wash lights, one hazier) will draw around 35–45 amps at peak usage. Concert and festival lighting easily exceeds 100+ amps.
Calculate Your Load Before Committing
Start by itemizing every fixture you plan to use, then add their wattages. Most lighting vendors provide power specs on spec sheets—ask for them explicitly during the hire or purchase quote phase. Multiply the total wattage by 1.25 to account for startup surges and sustained peak usage. Divide by your venue voltage (typically 120V in North America, 230V in Europe):
Amps needed = (Total Wattage × 1.25) ÷ Voltage
For example: 45,000W ÷ 120V × 1.25 = 468 amps. That's a massive draw, which is why most large events use three-phase power distribution (which splits the load across three circuits, requiring only ~156 amps per phase).
Venue Power Capacity Assessment
Before hiring or purchasing, confirm what your venue actually provides:
- Small venues: typically 100–200 amps single-phase (suitable for small weddings, clubs, small theater events)
- Mid-sized venues: 200–400 amps single-phase or three-phase service (corporate events, mid-tier concerts)
- Large venues: 400+ amps three-phase with multiple disconnects (festivals, arena concerts, large theater productions)
Contact your venue's technical manager or electrician—don't guess. Undersized power delivery will trip breakers repeatedly and damage expensive equipment.
Hiring vs. Owning: Power Considerations
Renting equipment lets you specify exact fixture counts and power needs upfront. Reputable lighting rental companies like PPHC, Bandit Lites, and local regional providers bundle power distribution gear (distros, cables, adapters) with your rental package. Expect to pay an additional 10–15% of rental cost for dedicated power infrastructure.
Buying your own rig requires permanent power solutions. If you're running a small studio or recurring venue event, installing a dedicated 60–100 amp subpanel costs $1,500–$4,000 but eliminates per-event rental fees. LED fixtures are energy-efficient and generate less heat than conventional rigs, reducing cooling overhead at outdoor summer events.
Common Power Mistakes to Avoid
- Running undersized extension cords: 100 feet of 14-gauge wire will drop voltage dangerously; use proper cable gauge charts or hire a qualified electrician
- Overloading a single circuit breaker: distribute fixtures across multiple circuits
- Ignoring venue power limitations: a beautiful outdoor venue with only 30-amp service cannot support your 16-light rig
- Forgetting control and infrastructure power: dimmers, consoles, and distribution equipment consume 5–10% of your total load
- Neglecting power for non-lighting gear: fog machines, projectors, sound systems all compete for the same supply
Work with Trusted Providers
Power requirements aren't one-size-fits-all, and mistakes cost real money. Mercoly connects you with vetted event lighting production providers in your area who can assess your venue, calculate realistic power demands, and quote accurate costs for both equipment and infrastructure.
Frequently Asked Questions
Q: How much extra power should I budget for safety? Add 25% headroom to your calculated peak load. If your rig draws 40 amps, contract for 50 amps available service. This prevents nuisance breaker trips and protects expensive fixtures from voltage sag.
Q: Can I use a generator for outdoor event lighting? Yes, but rent a quality unit rated for 1.5× your total wattage draw (generators deliver lower power under load). Ensure it's bonded to ground and hire a licensed electrician to connect it safely; improper generator wiring causes electrocution hazards.
Q: What's the difference between single-phase and three-phase power? Single-phase is standard for homes and small venues; three-phase splits current across three wires, delivering 1.73× more power from the same wire gauge. Events requiring 100+ amps almost always need three-phase.
Find trusted event lighting providers near you—compare power specs, pricing, and past work on Mercoly today.