Danville Solar Guide: Signed Permits, DC Ratings and Ground-Mount Records

Follow Danville's signed-permit upload step and distinguish the automated route from the broader December 2025 photovoltaic submittal list.

Sources reviewed: 2026-10-23

This Danville solar guide combines local official application evidence with saved production and housing datasets. Use it to ask better questions about the complete proposed installation, not as a permit, roof assessment, local price survey or personalized financial recommendation. The local review route and electricity account matter independently of the energy model.

Use the town's automated page and conditional plan list together

The data identifies Danville town, Census place GEOID 0617988. It is not another Danville, a countywide service area or every nearby postal address. Confirm the reviewing authority for the actual parcel. The town's SolarApp+ Submittals page describes automated review for eligible residential roof-mounted retrofit systems and points to eligibility checklists. Its separate Photovoltaic Systems Submittal Requirements document is marked revised December 15, 2025 and says that all items may not pertain to a specific project. Keep that qualification attached to the broader list. Danville complete SolarApp+ Submittals instructions, signed building permit upload and inspection request Danville PV submittal requirements, revised December 15, 2025, route-specific supporting records and DC rating Census 2020-2024 ACS five-year dataset documentation

The broader document names the 2025 California code editions, but this article is not a complete code determination or a certification that a particular design complies. Establish the current route for the complete proposal, including storage and non-roof mounting where relevant. Do not impose the full general list on every automated retrofit without clarification or assume automation removes all design obligations. The reference 6 kW DC array is a fixed production scenario, not approved plans, a mounting selection or evidence that every part of the real project qualifies. Danville complete SolarApp+ Submittals instructions, signed building permit upload and inspection request Danville PV submittal requirements, revised December 15, 2025, route-specific supporting records and DC rating PVWatts V8 model documentation

Complete the town permit, signature request and signed upload

Danville's automated instructions separate platform registration, design submission and its processing charge from the town permit application. After obtaining approved plans, the applicant applies through the town portal and pays town fees. The page then describes an email asking for signature of the building permit and directs upload of the signed building permit to the portal. Preserve that final record step. Paying fees or obtaining an automated design result is not the same as having supplied the town's signed permit document. Danville complete SolarApp+ Submittals instructions, signed building permit upload and inspection request

Identify who monitors the application email, completes the appropriate signature and retains the accepted signed document. The page's stated email expectation is not a guaranteed installation date, passing inspection or utility authorization. A generic promise of instant solar paperwork should not obscure a signature still awaiting action. This guide does not quote a universal current combined charge or replace actual assessed fees with an example from another municipality. Clarify corrections, related work and any changes to the accepted design before treating the application as the final record for construction. Danville complete SolarApp+ Submittals instructions, signed building permit upload and inspection request PG&E Getting Started with Solar, separate interconnection and written permission to operate

Distinguish STC kW DC from the other project quantities

The broader photovoltaic checklist asks applicants to specify STC, PTC and CEC-AC ratings, and specifically calls for the Standard Test Conditions rating in kW DC on the building permit application form. Use the actual design's verified values and current field definitions. Do not substitute inverter AC capacity, battery storage capacity or annual kWh production. Other cities can label their own fields differently; a familiar portal number is not a reason to copy an AC rating into a Danville field expressly requesting DC. Danville PV submittal requirements, revised December 15, 2025, route-specific supporting records and DC rating

The saved model below uses 6 kW DC of modules and a 1.2 DC/AC ratio, implying 5 kW nominal inverter AC capacity for that scenario only. Neither number is the actual project's equipment schedule. Its annual AC kWh measures energy over a year and cannot fill in a power or storage-capacity field. Keep specifications, drawings and the application aligned when equipment changes. Obtain an updated production estimate for a changed layout rather than carrying forward the reference total as a guarantee for a different module count, inverter or orientation. PVWatts V8 model documentation Danville PV submittal requirements, revised December 15, 2025, route-specific supporting records and DC rating

Keep ground-mounted, tree and storage records in their stated context

Danville's broader list identifies plot boundaries, buildings, easements, tree species and trunk information, canopy and drip lines. It also identifies structural records and Contra Costa Central Sanitary District stamping for ground-mounted work. Treat those as scope-specific documentation questions for the responsible designer and town, not as a claim that every rooftop retrofit requires sanitary-district approval. Confirm the actual mounting and current agency requirements before commissioning records or assuming that an existing drawing already covers a changed site arrangement. The representative model point is not a property or tree survey. Danville PV submittal requirements, revised December 15, 2025, route-specific supporting records and DC rating PVWatts V8 model documentation

The same checklist distinguishes roof plans, ground-mounted structural plans, manufacturer information and battery-related records. These are information categories, not homeowner instructions to design footings, open panels, install protection or position batteries. Ask qualified professionals which current records apply and keep the proposed configuration consistent with the reviewed specification. Where a product sheet contains multiple models, the document asks that the chosen model be identified. A family of similar products or a common advertised capacity should not leave the actual installation ambiguous in the final accepted package. Danville PV submittal requirements, revised December 15, 2025, route-specific supporting records and DC rating

Apply route-specific file instructions and retain inspection outcomes

The general list distinguishes multiple sets for in-person submission from sheet-size requirements that also apply electronically. Do not convert its printed-set language into an instruction to upload duplicate copies everywhere or silently impose it on the automated route. Confirm the current selected portal's format and supporting-document requirements. The automated page identifies inspection requests through the permit portal or the stated phone system. Retain the actual appointment, required site documents and result rather than treating a requested visit or a signed building permit as proof the installation passed. Danville PV submittal requirements, revised December 15, 2025, route-specific supporting records and DC rating Danville complete SolarApp+ Submittals instructions, signed building permit upload and inspection request

For an actual PG&E account, complete its independent interconnection and engineering requirements, provide required local records and retain official written permission to operate. The utility warns not to turn on the system before that permission. Confirm current applicable billing and generation arrangements rather than assigning them from the town name. Reference energy cannot calculate import/export timing or personal savings, and the general PV document's code date does not establish incentive eligibility. Use the current IRS cutoff for the former residential credit and verify any separately claimed benefit for the actual applicant and timing. PG&E Getting Started with Solar, separate interconnection and written permission to operate PG&E Solar Billing Plan, residential monthly statements and annual True-Up; marketing savings not adopted IRS Residential Clean Energy Credit, placed-in-service cutoff

Compare a hypothetical cash illustration with the actual Danville scope

For arithmetic only, imagine a hypothetical cash price of $2.75 per watt for 6 kW DC: 6,000 watts times $2.75 equals $16,500. This is invented arithmetic, not an observed Danville market price, contractor quotation or recommendation for a reasonable budget. No former residential federal credit is deducted for property placed in service after the IRS cutoff. The illustration does not establish included equipment, construction, finance charges or actual assessed fees. Obtain an itemized written cash offer and compare the same complete installation rather than treating this multiplication as evidence of a local going rate. IRS Residential Clean Energy Credit, placed-in-service cutoff

Identify the signed town permit, actual rating/design records, applicable ground-mounted agency coordination, storage scope and assessed charges. Separate installation, roof work, storage, service changes, professional records, financing and actual permit or provider charges. Identify responsibility for corrections and additional inspections. No rebate award, export revenue, savings or payback is calculated. For a confirmed PG&E account, its residential Solar Billing Plan resource distinguishes monthly statements, annual True-Up and different charges and credits. Those amounts need actual consumption, imports, exports, current account terms and any battery operating assumptions. Reference annual production cannot supply the missing inputs, make remaining charges disappear or establish that a sales proposal is financially suitable for the household. PG&E Getting Started with Solar, separate interconnection and written permission to operate PG&E Solar Billing Plan, residential monthly statements and annual True-Up; marketing savings not adopted PVWatts V8 model documentation

A documented 6 kW reference scenario for Danville

The saved Danville scenario estimates approximately 10,012 kWh AC annually at the Census representative point, not at a surveyed household roof. Its fixed inputs are 6 kW DC of modules, a roof-mounted south-facing array, 20-degree tilt, 14% aggregate system losses, a 1.2 DC/AC ratio and 96% inverter efficiency. The implied nominal inverter capacity is 5 kW AC. Module capacity, inverter capacity and annual energy are different quantities; none alone establishes permit eligibility. PVWatts V8 model documentation

PVWatts uses typical-year weather, not measured 2026 electricity production. The Danville table retains all twelve modeled months and the annual total, with no extra 0.80 multiplier applied to its already modeled AC output. Model 0617988-roof-6kw-south-20deg-v1, provider version 8.5.0, identifies the saved scenario. It does not inspect shade, usable roof area, framing or electrical equipment, simulate storage dispatch, or calculate bills. Obtain a new estimate for the actual layout if module count, orientation or other inputs change. PVWatts V8 model documentation

Read the Danville housing estimates with their uncertainty

The housing table joins Danville to its exact Census place GEOID 0617988, using the 2020-2024 ACS five-year survey and 2024 geographic vintage. It reports occupied and owner-occupied housing units with their separate published 90% margins of error. These are multi-year estimates, not current 2026 household counts or counts of roofs eligible for solar. Keep the estimate and margin together when citing the data, and do not interpret ownership alone as installation permission or structural suitability. Census 2020-2024 ACS five-year dataset documentation

Survey acs-2020-2024-0617988 supplies the saved Danville figures. Local ownership and occupancy context can help explain whom a guide may serve, but cannot establish roof condition, financial suitability or the number of installations. Small differences in modeled production or survey counts between neighboring places are not evidence that one community has better solar economics. The property assessment, verified account and local project records are the decision inputs. Displayed monthly and annual energy values are rounded independently, so their displayed totals can differ slightly. PVWatts V8 model documentation Census 2020-2024 ACS five-year dataset documentation

Check the installation date rather than assuming a federal credit

For new-installation planning, the IRS says property placed in service after December 31, 2025 is not eligible for the former residential clean energy credit. No such credit is deducted from the hypothetical cash example here. Older eligible expenses and unused-credit carryforwards are separate tax-return matters. Do not use a legacy incentive link on an otherwise useful municipal or utility page as proof of a current benefit, or replace an expired credit with an unverified local rebate. Confirm any other claimed benefit for the actual applicant, equipment and timing. IRS Residential Clean Energy Credit, placed-in-service cutoff

Keep the Danville sources and account references together

The municipal, utility and IRS source text used for this Danville article was reviewed October 23, 2026. Review means checking the public documents and their stated limits, not obtaining municipal staff approval or confirming every dated fee or code reference as newly effective. The production and housing data are saved research snapshots. Retain project-specific written requirements, final equipment and assessed charges as the project develops.

Read the California state guide for broader context. Only if the actual electricity account identifies PG&E, consult the PG&E utility guide. This is not a parcel-level territory assignment or confirmation of the generation supplier. Verify the serving provider, applicable account terms, interconnection status and any separate generation arrangement before analyzing imports, exports or savings. SMUD and neighboring-city rules are not substitutes for the actual account's requirements.