Most film sets need between 20kVA and 500kVA of power, depending on the scale of the production, the lighting setup, and the number of facilities on site. Smaller shoots may run on a single unit, while larger productions often require multiple generators with full distribution. The key is not just how much power you have, but how reliably it is delivered across the set.
Power issues do not slow things down gradually. They stop a shoot outright. That is why getting this right early matters.
What Drives Power Demand on a Film Set?
Power planning starts with understanding what is actually running.
Lighting is usually the largest demand. Even with modern LED setups, larger rigs can draw significant load, especially on night shoots or exterior locations. Traditional lighting setups increase that demand further.
Camera and monitoring equipment require less power, but they still need a stable supply. The same applies to sound equipment, video village setups, and production offices.
Then there are the elements that often get missed. Catering units, honeywagons, trailers, and heating or cooling systems all contribute to the total load. These are spread across the site, which means distribution matters just as much as generation.
Typical Power Requirements by Production Size
A small commercial shoot might sit between 20kVA and 60kVA. This usually covers lighting, camera equipment, and basic crew facilities.
A mid-size TV production can require between 100kVA and 200kVA. At this level, you are supporting multiple departments, larger lighting setups, and a more complex unit base.
Large productions often exceed 300kVA. These setups typically use multiple generators working together, with power split across technical and welfare systems to maintain stability.
Why Generators Are Essential on Film Sets
Most filming locations are not built to handle production-level demand. Even where mains power is available, it is rarely reliable enough to support a full setup.
That is why generators are a standard part of professional film production. They provide consistent, controlled power across the entire site.
A well-planned generator setup will:
- Separate critical and non-critical loads
- Allow for backup capacity
- Deliver power efficiently across the set
This keeps everything running without interruption.
For production teams planning their setup, choosing the right generators early makes a noticeable difference once filming begins.
Distribution Matters More Than You Think
Having enough power is only part of the picture. How that power is delivered across the set is just as important.
Long cable runs, poor load balancing, and badly positioned generators can all create issues. Even with sufficient capacity, these problems lead to inefficiencies and downtime.
Planning your layout early helps avoid this. Position generators close to high-demand areas, keep cable runs efficient, and allow space for adjustments during the day.
Planning for Backup and Peak Load
Film sets do not run on steady demand. Power usage changes throughout the day.
Lighting rigs can spike when switched on. Catering and climate systems fluctuate. If your setup cannot handle these peaks, problems appear quickly.
That is why most productions build in extra capacity. Backup generators or split systems ensure that if one unit fails, the rest of the set continues to run.
According to the British Film Commission, proper infrastructure planning is key to keeping productions on schedule. Power plays a central role in that.
Are Used Generators a Viable Option?
For some productions, used generators can offer a practical and cost-effective solution.
When properly maintained, they deliver reliable performance at a lower cost. The important part is making sure they are suited to your load requirements and supported by a solid distribution setup.
For longer shoots or budget-conscious productions, this can be a sensible option without compromising reliability.
Common Mistakes When Planning Film Set Power
Underestimating total load is one of the most common issues. It leads to overloaded systems and unexpected downtime.
Another is relying too heavily on site power. Most locations are not designed for the demands of a film crew, and this creates unnecessary risk.
Poor layout planning is also a factor. If generators and distribution are not positioned correctly, time is lost solving problems that could have been avoided.
FAQs
How much power does a film set need?
Most film sets require between 20kVA and 500kVA, depending on the size of the production and the equipment being used.
What uses the most power on a film set?
Lighting is typically the biggest demand, followed by catering, trailers, and heating or cooling systems.
Do film sets always use generators?
In most cases, yes. Generators provide reliable power that locations cannot guarantee.
How do you calculate power requirements for a film shoot?
List all equipment, estimate total load, and allow extra capacity for peak usage and backup.
Power is one of the few areas where mistakes have immediate consequences. When it is planned properly, it stays in the background and lets the production run as it should.
If you are planning a shoot and need a setup that works without interruption, get in touch with Supply 2 Location. The team will help you build a reliable power solution that keeps everything moving.
