Path-Q Solar
How does a long cable run from a ground-mounted solar array affect installation cost and electrical losses?
Answer
A long cable run generally increases installation cost because it requires more conduit, conductor, labor, and often trenching or restoration. It can also increase resistive losses and voltage drop unless the design uses suitable voltage, conductor sizing, and equipment placement; larger conductors generally cost more but reduce those losses.
Key points
- Cost is driven by distance, trench depth and surface, rock or obstacles, conduit, conductors, labor, restoration, and permitting.
- Electrical loss depends on current, conductor size, voltage, length, and system design.
- Higher-voltage collection, larger conductors, or locating conversion equipment nearer the array may reduce current or losses, subject to design and safety requirements.
- The route should account for drainage, future digging, vehicle traffic, landscaping, and access.
What it depends on
- Array-to-service distance and route
- System voltage, conductor size, and equipment location
- Terrain, soil, obstacles, and restoration needs
- Local construction and electrical requirements
Risks and trade-offs
- Using smaller conductors may reduce upfront cost but increase losses and voltage-drop concerns.
- A shorter route may require a less optimal array location or more shading.
- Trenching can create property damage and future maintenance obligations.
Information you may need
- Measured route length and site plan
- Terrain and surface conditions
- Proposed conductor, voltage, and equipment design
- Itemized trenching, restoration, and electrical costs
- Expected annual loss estimate
Your next step
What to do next
Request an itemized ground-mount quote with route drawings, conductor assumptions, voltage-drop or loss estimates, and restoration responsibilities.
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SQ00181