Last Updated 2 months ago
Definition
“Hydro” is Canadian industry slang for electricity or an electrical power hookup on set. It is commonly used to refer to available power, power sources, or electrical access, as in phrases like “Do we have hydro here?” or “There’s hydro on that side of the building.”
The term is widely understood on Canadian film and television productions and is used interchangeably with “power,” even when the electricity is not generated by hydroelectric sources.
Role in Production
The role of “hydro” in production language is shorthand efficiency. It allows crew to quickly communicate about power availability, distribution, and limitations without using formal electrical terminology.
Questions about hydro often arise during location scouts, tech scouts, and load-ins, as power access directly affects lighting plans, generator needs, and overall logistics. Knowing where hydro is available can determine whether a location is viable or whether additional infrastructure is required.
In practice, “hydro” usually refers to house power, tie-ins, or existing electrical service rather than generators.
Use on Canadian Sets
On Canadian sets, “hydro” is part of everyday vocabulary across departments, not just electrical or lighting. Directors, producers, location managers, and assistant directors all use the term casually.
A location may be described as having “good hydro” or “limited hydro,” indicating how much usable power is available. This affects decisions about fixture choice, load balancing, and whether generators must be brought in.
The term is understood implicitly and rarely explained on Canadian productions.
Regional Context
The slang originates from Canada’s widespread use of hydroelectric power and the historical naming of electric utilities as “hydro” services. Over time, the term became a stand-in for electricity itself.
Outside of Canada, the term can cause confusion. On U.S. or international sets, “hydro” may be misinterpreted as referring to water rather than power. For this reason, Canadian crew often switch to “power” when working internationally.
Understanding regional terminology helps avoid miscommunication on mixed crews.
Hydro vs Generator Power
“Hydro” generally implies grid power rather than generator power. Saying a location “has hydro” usually means there is access to existing electrical service.
Generator power is typically specified explicitly and treated as separate from hydro. The distinction matters for noise, capacity, reliability, and safety planning.
While both supply electricity, they are managed and discussed differently on set.
Practical Considerations
Hydro availability does not automatically mean sufficient capacity. Older buildings, residential locations, or temporary hookups may have limited amperage or restrictive circuits.
Confirming hydro details early helps prevent overloads, blown breakers, or unsafe workarounds. Even when hydro is available, generators may still be used to isolate loads or ensure consistency.
Clear communication between locations, electrics, and production is essential.
Common Misconceptions
A common misconception is that “hydro” literally means hydroelectric power on set. In practice, it simply means electricity, regardless of how it is generated.
Another misconception is that hydro is always reliable. House power can be inconsistent, shared, or restricted, especially in residential areas.
It is also incorrect to assume the term is universally understood. Outside Canada, it often is not.
Why “Hydro” Matters
“Hydro” is a small term with large logistical implications. It affects lighting strategy, budget, scheduling, and safety.
Understanding the term helps non-Canadian crew integrate smoothly into Canadian productions and prevents avoidable confusion during planning and execution.
Like much set slang, “hydro” reflects regional production culture. Knowing it is part of professional fluency.
Related Terms
[Power] Electrical energy used to operate lighting and equipment.
[House Power] Electricity supplied by an existing building or location.
[Generator] A machine used to produce electricity independently of the grid.
[Tie-In] A direct electrical connection made to a building’s power system.
[Gaffer] The head of the lighting department responsible for power distribution and lighting execution.