Almost certainly, but this brief doesn't have sourced national requirements — permitting authority sits with local jurisdictions, and rules vary by city and county. That's a genuine gap in this site's current research, not an answer we're avoiding.
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How much does permitting actually add to the cost?
It's part of what NREL categorizes as "soft costs" — alongside labor overhead, customer acquisition, and margin — which together make up just over half (50.5%) of the total price in the Q1 2024 residential benchmark. That's a real, substantial share of the total, even without a permitting-specific dollar figure broken out separately in this brief.
What's the interconnection step, and is that the same as a permit?
No — interconnection is a separate process specifically with your utility, governing how your system connects to the grid and what compensation structure applies to any energy you export (net metering, net billing, or another arrangement). This brief's research on state and utility-level interconnection rules is not yet complete; see our tax credit and net metering pages for what is and isn't sourced on the compensation side.
Who's actually responsible for handling permits — me or the installer?
This brief doesn't have a sourced national answer for who handles permit filing, though in practice it's commonly the installer's responsibility as part of the overall project. It's worth confirming directly with any installer you're evaluating exactly what they handle versus what falls to you.
Sources
2 cited- Soft-cost share including permitting: NREL/TP-7A40-92536, Documenting 15 Years of Reductions in U.S. Solar Photovoltaic System Costs, January 2025 (checked 2026-08-18).
- Interconnection as a separate process: NREL, Energy Compensation Mechanisms for Distributed Generation, last updated 2026-02-20 (checked 2026-08-18).