Solar Electrical Estimating
Rooftop solar electrical scope is a balance of system: conduit, combiners, inverters, and the utility interconnect. We measure from the electrical layout with interconnections priced as specified.
The PV electrical scope we estimate runs from the module-level DC wiring to the point of common coupling: DC and AC conductors, combiners and junction boxes, inverters (string, micro, or central), disconnects, rapid shutdown devices, grounding and bonding, and the AC interconnection to the main service or utility meter. Panel type and stringing affect wire and conduit quantities, so we verify the electrical layout against the mechanical plan rather than assuming uniform runs.
Code drivers shape solar estimates more than any other residential scope. NEC 690 requirements for rapid shutdown, arc-fault protection, and grounding and bonding add real material and labor to every residential install, and jurisdiction inspection requirements vary widely by county. We price to the governing code cycle and local AHJ expectations.
What We Estimate
- DC strings, combiners, and conductors
- Inverter and rack grounding systems
- AC interconnection and meter bases
- Utility coordination and permitting work-scope
What Drives Solar Electrical Estimates
- System size and stringing “’ Panel count, string configuration, and inverter selection determine DC conductor, conduit, and OCPD quantities.
- Roof and mounting complexity “’ Multistory roofs, tile or metal roofing, and composite layouts add labor time to every conduit and grounding run.
- Interconnection type “’ A simple line-side tap differs dramatically from a utility-required transformer or service upgrade.
- Rapid shutdown and arc-fault requirements “’ NEC 690.12 and 690.11 compliance hardware is a measurable line item on every modern install.
- Utility and AHJ requirements “’ Permitting, inspection, and interconnection fees plus utility metering requirements vary by jurisdiction.
Why Choose Apex Electric Estimating Inc?
With 100% accuracy tracked across 5000+ projects and 15+ years of experience, Apex Electric Estimating Inc is the trusted choice for electrical contractors nationwide. We understand the unique requirements of each project type and deliver estimates that help you win profitable bids.
Our Process
- Send Your Plans - Email your project drawings and specifications
- Get Quote - Receive flat-fee pricing within 15-30 minutes
- Takeoff & Estimating - Our estimators prepare detailed takeoffs and cost estimates
- Delivery - Receive Excel, PDF, and marked-up plans within 24-48 hours
Benefits of Our Solar Electrical Estimating
- 100% Accuracy Rate - Tracked across real projects
- Flat-Fee Pricing - Starting at $65, no hourly billing
- Fast Turnaround - 24-48 hour standard delivery
- Zip-Code-Based Pricing - Local market rates
- Color-Coded Plans - Clear takeoff sheets
- Free Revisions - Scope changes included
Contact us today for a free quote on your Solar Electrical Estimating project.
Our Estimating Process
Our estimating process follows three disciplined steps:
- Drawing Review “’ We review the complete drawing set, specifications, schedules, and addenda to identify every component, device, and system that belongs in the estimate. Nothing is counted twice and nothing is missed.
- Takeoff & Quantification “’ Our estimators measure the project sheet by sheet, level by level, using digital takeoff tools. Quantities are cross-checked against panel schedules, one-lines, and fixture schedules for accuracy.
- Pricing & Delivery “’ We price every line item with zip-code-based material and labor rates, then deliver an organized Excel file, marked-up plans, and a PDF summary you can take straight into your bid.
Deliverables
Every estimate includes:
- Complete material quantity takeoff organized by CSI division
- Labor-hour calculations based on regional productivity data
- Zip-code-based material and labor pricing at current market rates
- Color-coded marked-up plans showing exactly what was measured
- Editable Excel file with quantities, units, and rates visible
- PDF summary for the proposal package
- Flat-fee pricing “’ starting at $65 “’ with no hidden hourly charges
- Free revisions when the project scope changes after delivery
Frequently Asked Questions
Q: What information do you need to start a Solar Electrical estimate? A: We need the project drawings (PDF or printed), specifications, any equipment schedules, and a brief description of the project scope. We can start with partial drawings and update the estimate as more documents become available.
Q: How long does a Solar Electrical estimate take? A: Standard turnaround is 24-48 hours for most projects. Larger or more complex projects may take longer, and we will communicate the expected delivery time when we provide your flat-fee quote.
Q: Do you handle change orders and revisions for Solar Electrical projects? A: Yes. We include free scope revisions with every estimate. If the drawings change after delivery, we update the takeoff and pricing at no additional charge within the scope of the original engagement.
Contact us today for a free quote on your Solar Electrical Estimating project.