City of Biggs

A city address is usually permitted by the city, not the county — but not always, and some authorities keep building and hand electrical to someone else. Getting this wrong costs the whole submittal, because every requirement below belongs to whoever actually holds jurisdiction. Check the overlays in the same pass: an HOA, a historic district, a windstorm certification or a system-size cap can reshape the design, and all of them are cheaper to find now than after the array is laid out.

• Is this authority the AHJ for residential solar at this address? No 90% · authority's own department page
• What does this authority permit itself, and what does it delegate? Delegated 92% · live permit/inspection portal
• Is a permit required for a residential rooftop PV system? Yes 95% · published checklist/handout
• Is there a separate electrical permit, or is it combined? Combined 82% · live permit/inspection portal
• Is a wind or windstorm certification required? No local wind/windstorm certification requirement found 55% · published checklist/handout
• Is there a system-size cap on residential generation? Not a cap on the BUILDING/ELECTRICAL PERMIT itself (Butte County's handouts set complexity thresholds -- tilt/ballast racking, framing load, roof angle -- that route a system to full plan review, not a kW ceiling). But the City's own 2011 Net Energy Metering tariff (Res. 2011-24, eff. 1 Dec 2011, codified at BMC 10.25.010/.060) states its "purpose... is to facilitate terms of service to customers with solar or wind power production systems of not more than 10 kilowatts" and separately that the tariff's "applicability... does not extend to customers whose solar or wind power production source exceeds three kilowatts for residential... projects." The document is internally inconsistent (10 kW in the purpose clause vs. 3 kW in the applicability clause) and is 15 years old with no newer version found published. 68% · utility tariff (City Council resolution)

Several authorities require the electrical permit to be pulled by a licensed electrician, or require the contractor to be registered with them BEFORE applying. Registration is not same-day. This is second on the list rather than fourth because it is the step most likely to stop the job before the drawings matter.

• Who is allowed to pull the electrical permit? Either 82% · authority's own department page
• Must the contractor be registered with this authority before applying? No 78% · published checklist/handout
• Is a homeowner permitted to self-install and self-permit? Yes 78% · authority's own department page

Almost everywhere wants a site plan, a one-line or three-line electrical diagram, equipment cut sheets with listings, and a structural attachment detail. Build it against the published checklist rather than the last jurisdiction you worked in — the checklist is what the reviewer marks against.

• What documents make up a complete submittal? Complete permit application; permit-fee payment; complete set of plans (cover sheet/site plan with job address, owner/contractor/designer contacts, panel count and kW size, applicable codes; electrical plans with single-line diagram and location of all equipment; structural/racking plans with connection details); equipment specification sheets; for ground mount also structural calculations, geotechnical report (as applicable), and Special Inspection & Testing Agreement forms (as applicable); proof of contractor's license/workers'-comp at issuance. 90% · published checklist/handout
• How many copies, and in what format? Not stated as a fixed page/copy count. DBP-71 requires a "complete set of plans" at intake and a "printed complete set of plans" plus equipment spec sheets on-site at inspection. DBP-70 (ground mount) allows digital submittal at the counter, via the county's Ushare drop (www.bcdds.net/drop), or by email to dsbuilding@buttecounty.net; the county emails back approved digital plans and the customer must print a copy to have on site for inspection. 82% · published checklist/handout
• Is a site plan required, and what must it show? Yes. Must show: job address; owner/contractor/designer/contact names, addresses, phone; description of work; number of panels and system size in kW; applicable codes; location of the proposed system/structure and all existing structures; location of well, septic, and other utilities; for ground mount, also setbacks from property lines. 90% · published checklist/handout
• Is a one-line / three-line diagram required? Yes 92% · published checklist/handout
• Are string and conductor calculations required? Not stated as a separately named requirement; the required single-line diagram must show conductor/conduit sizing and grounding-electrode conductor sizing, per the county's own sample electrical diagram (DBP-75, a generic un-customized CALSEIA/OPR-style template with a full conductor/conduit schedule) -- so conductor sizing information is implicitly required as part of the electrical plan, but Butte County's handouts never use the phrase "string calculation" or size a required ampacity table. 58% · published sample diagram (generic/statewide template)
• Is a structural PE stamp required, and at what threshold? Roof mount: no PE/architect stamp required for a standard over-the-counter system (Building Inspector plan-reviews at the time of inspection), EXCEPT (a) if the array sits on a permitted "Ag Exempt" structure, which needs a structurally-sound letter from a CA-registered architect or engineer, or (b) if the system triggers full plan review (tilting/ballasted racking, framing load > 3 psf, panel-to-roof angle > 30 deg [or 40 deg], mounting on an unpermitted structure) -- full plan review is not stated to itself require a PE stamp but is reviewed by county staff rather than at the counter. Ground mount: ALWAYS requires site-specific foundation plans signed and stamped by a CA-licensed engineer or architect (or general foundation plans plus a site-specific stamped letter), and structural calculations/anchoring details are required specifically for equipment exceeding 400 lbs. 88% · published checklist/handout

Most authorities now take the whole application through a portal, and several states cap or constrain what a residential solar permit may cost. Check whether plan check is billed separately before you quote the job.

• Which permit portal does this authority use? Butte County Accela Citizen Access (ACA) -- aca-prod.accela.com/BUTTECO 95% · live permit portal
• Can the whole application be completed online? Yes, for systems eligible for over-the-counter review 78% · authority's own department page
• What does a residential solar permit cost? $356 flat (residential roof-mounted PV, electrical permit fee); $1,274 flat (residential ground-mounted PV); $273 flat (solar reinstall); $317 flat (residential "Power Wall"/battery system). 90% · published fee schedule
• How is the fee calculated? Flat 90% · published fee schedule
• Is there a separate plan-check fee? No separate line item for a standard over-the-counter residential PV system -- the flat electrical-permit fee appears to bundle the plan review that DBP-71 says happens "during the inspection." Systems that trigger full plan review (see Q13/Q28 triggers) instead draw on the Building Division's hourly rates ("Expedited Plan Check" $222/hr, "Supplemental Plan Check Fee" $167/hr), which are billed in addition to the flat permit fee. 65% · published fee schedule

Interconnection is a separate process from the permit and usually the longer pole. Where the utility does not depend on the permit being issued, running both at once is the single biggest saving available on a residential job.

• What is the stated plan-review turnaround? No separate wait for a standard over-the-counter residential roof-mount system -- DBP-71 states "The Building Inspector will perform a plan review on the plans during the inspection" for systems that qualify. For systems requiring full plan review, Butte County's Building Division page's live "Plans Being Checked Today" tracker (checked 31 Aug 2026) showed the "Ground Mounted & Non-Residential Roof Mounted Solar" queue currently processing submissions from "3 weeks ago." 78% · authority's own department page (live status widget)
• Which utility handles interconnection here? City of Biggs Electric Utility -- a municipally-owned electric utility (POU), NOT PG&E. It is jointly staffed with the neighbouring City of Gridley as the "Gridley-Biggs Electric Department," a member of the Northern California Power Agency (NCPA), and interconnects to PG&E's 60kV transmission line only at the wholesale/transmission level (Dakota Ave./SR-99 substation) -- CPUC Rule 21 does not apply to this POU. 95% · authority's own department page

The NEC edition a jurisdiction enforces is often a cycle behind the newest one published, and local amendments sit on top of it. Rapid shutdown, conductor sizing and labelling all change between editions, so the edition in force is the first thing to establish, not the last.

• Which NEC edition is in force? 2023 88% · authority's own department page
• Which building code edition is in force? 2025 California Building Code and 2025 California Residential Code, effective 1 Jan 2026 88% · authority's own department page
• Which fire code edition is in force? 2025 California Fire Code 68% · authority's own department page
• What is the installation judged against? California Electrical Code (CEC) Article 690, Solar Photovoltaic Systems; all equipment/components must be listed and labeled by UL or another recognized testing agency. 85% · published checklist/handout

Ridge setbacks and roof access pathways are fire-service requirements and they constrain the array layout. They are the most common cause of a redesign after the fire department comments on a plan set.

Nothing recorded for City of Biggs on this step yet — 1 question checked and found unpublished. The guidance above is general.

Which rapid-shutdown rule applies follows directly from the NEC edition in force, and the initiation device has to be at a location the fire service can reach and identify. This is inspected, and it is labelled.

• Is rapid shutdown required, and to which NEC edition? Yes, rapid shutdown is required for PV located on or in a building. Butte County's own current inspection guideline (DBP-69) cites "2016 CEC, Article 690.12" for this requirement, but that citation is stale: the county's Building Division now enforces the 2025 CEC (based on the 2023 NEC) for all permits reviewed after 31 Dec 2025, and NEC 690.12's controlled-conductor/array-boundary provisions have been substantially revised across the 2017, 2020 and 2023 NEC cycles since DBP-69 was last revised (4/10/18) -- DBP-69 has not been updated to reflect the current edition's specific requirements. 75% · published checklist/handout (dated)

The NEC sets a baseline for permanent markings at the service equipment and the disconnecting means. On top of that, an authority may specify its own wording, and the utility may specify more again. Where any of them writes its own text, a generic off-the-shelf label set will not pass — this is the detail most often fixed on a return visit.

• Which placards does this authority require at the service equipment? DC Disconnect label; "WARNING ELECTRIC SHOCK HAZARD" placard at the DC disconnect; installed-system-information label at the DC disconnect (rated max power-point current/voltage, max system voltage, short-circuit current); AC Disconnect label (max AC output, operating AC voltage); a permanent plaque/directory at the Utility Service Panel identifying the location(s) of other equipment if not co-located; a rapid-shutdown placard at the utility service equipment. 78% · published checklist/handout (dated)
• Does the authority specify placard wording of its own? Yes 72% · published checklist/handout (dated)
• Does it specify letter height, colour or material? Not specified 75% · published checklist/handout
• Is a site plan / facility map placard required, and what must it show? A directory/plaque is required at the Utility Service Panel ONLY when the DC Disconnect, Inverter, and/or AC Disconnect are not co-located with the Utility Service Panel; it must identify the location(s) of that other equipment. No separate graphical facility/site-plan placard is described beyond this equipment-location plaque. 70% · published checklist/handout (dated)
• Where must the labels be placed? DC Disconnect: readily accessible and within sight of the inverter. If DC wiring runs through the building, the DC Disconnect must sit before the conductors enter the building (or the conductors must run in metallic raceway/enclosure to the disconnect, with J-boxes labeled "DC Source Circuits"). Rooftop micro-inverter systems have no DC disconnect; instead an AC Disconnect is installed on the roof or at the utility panel, lockable OFF. Rapid-shutdown placard and equipment-location plaque go at the Utility Service Panel/equipment. 78% · published checklist/handout (dated)

Where the AC disconnect must sit relative to the meter is usually the utility's rule, not the building department's. Battery storage frequently carries its own permit, its own inspection and its own fire conditions.

• Where must the AC disconnect be, relative to the meter? For rooftop micro-inverter systems (no DC disconnect), the AC Disconnect must be installed "on the roof or at the Utility panel" and be capable of being locked OFF, with installed-system information posted at the Utility Service Panel. For central/string-inverter systems, the general CEC/NEC rule applies: the AC disconnect/interconnection point must be readily accessible at or near the service equipment. No Butte-County-specific numeric distance-from-meter rule was found beyond this. 68% · published checklist/handout (dated)
• Must equipment be on a specific approved list? Yes 88% · published checklist/handout
• Are batteries permitted, and under what conditions? Yes, permitted -- Butte County's Master Fee Schedule prices a residential "Power Walls -- Batteries Per System" line at $317, separate from the PV permit fee, confirming the county issues permits for battery storage. No dedicated ESS/battery installation-conditions handout was found among the county's six published solar bulletins (DBP-69 through DBP-75), which are all PV-specific. 72% · published fee schedule
• Is there a separate ESS permit or inspection? Likely yes, in fee terms -- the Master Fee Schedule prices "Power Walls -- Batteries Per System, Residential" ($317) as its own distinct line item, separate from the PV roof/ground-mount lines, implying a discrete permit fee is assessed for a battery even when paired with PV. Whether it is issued as a physically separate permit record (vs. an add-on line to the same RES-SOLAR permit) is not confirmed. 55% · published fee schedule
• Is a ground mount treated as a structure? Yes 85% · published checklist/handout
• Is there a local rule on service upgrades or busbar sizing? "Photovoltaic interconnection circuit breaker at the Utility Service Panel shall not exceed 20% of the bussing rating and shall be positioned at the opposite end of the bussing from the main input circuit location (i.e. 20 amp for 100 amp panel)." 65% · published checklist/handout
• Is a specific mounting system or attachment spacing required? No universal spacing figure specified; racking must follow the manufacturer's listed installation instructions with details showing all connections into roof/foundation framing members. Systems exceeding 3.0 lbs/sq ft of panel+support framing, or a panel-to-roof-plane angle exceeding 30 (or 40) degrees from horizontal, are routed out of the over-the-counter path into full engineered plan review. 80% · published checklist/handout

Booking is a portal, a phone call or an email depending on the authority, and the notice required is rarely zero. Book before the work is finished rather than after — the lead time, not the work, is usually what sets the date.

• How is an inspection booked? Portal 88% · authority's own department page
• Are same-day or AM/PM windows offered? Estimated-time windows, not generic AM/PM -- the county's live daily inspection schedule assigns each inspection a specific estimated start time with the notice "inspectors may arrive up to 1-hour prior or 1-hour later than the posted time" (effectively a ~2-hour window); the Building Division's own page separately describes this as "the 2-hour window of your inspection." 80% · live inspection schedule

Some authorities inspect their own solar work; some delegate it, and a few do not inspect the PV equipment itself at all. Who is coming determines what they will look at.

• Does this AHJ perform its own final solar inspection? Delegated 95% · live inspection schedule
• If delegated, to whom? Butte County Department of Development Services, Building Division 95% · live inspection schedule

A rough-in or mid-roof inspection, where one is required, has to happen before the work it covers is closed up. Missing a stage means opening something back up, and it is the most expensive kind of correction.

• Which inspections are required, and in what order? For a standard over-the-counter roof-mount system, DBP-71 describes a single-inspection model: the Building Inspector plan-reviews and inspects the installed system together, and the live schedule shows the terminal inspection on a RES-SOLAR permit logged simply as "Building Final Inspection." For ground-mount systems, DBP-70's foundation/geotechnical submittal requirements imply a footing/foundation inspection would precede the final, though this is not spelled out as a named, sequenced stage in the published handouts. 72% · published checklist/handout
• Is a rough-in or mid-roof inspection required? No, not for a standard roof-mount system -- DBP-71's model is a single combined plan-review-and-final inspection ("The Building Inspector will perform a plan review on the plans during the inspection"), with no separate rough-in or mid-roof stage named. 65% · published checklist/handout

The approved plan set, the permit, and the equipment listings should be on site and reachable. Inspectors routinely verify that installed equipment matches what was approved, and that the labels are the ones the plan set promised.

• Is there a published inspection checklist? Yes 92% · published checklist/handout
• What must be on site at inspection? Approved plans on site (printed complete set, matching the module count/location on the approved site plan); equipment specification sheets for all installed equipment; site access to all inspection areas (a properly supported temporary walking surface for tile roofs, a secured ladder for two-story access, and attic/garage access if wiring runs there). 90% · published checklist/handout
• Does the inspector verify labels and listings? Yes 92% · published checklist/handout

Passing gives you a final or an equivalent sign-off. That is not the same as permission to operate: PTO comes from the utility, and who tells the utility the inspection passed varies. A system left switched off for weeks is usually waiting on this handover.

• What is issued on pass? Final 72% · live inspection schedule
• Is there a re-inspection fee? Not billed under a line literally named "re-inspection"; the two Building Division hourly rates that would apply to a return trip are the "Call-Out Fee" ($203/hour, 4-hour minimum -> $812 minimum) and the "Supplemental Inspection Fee" ($156/hour). Which one is actually charged for a routine failed-inspection return visit is not stated in the fee schedule. 50% · published fee schedule