Solar Engineering & Permit Plan Sets for Residential and Commercial Projects

Daniel Solar Engineering provides complete solar engineering and permit plan services for residential, commercial, and utility-scale projects throughout the United States. Our services include solar permit-ready plan sets, single-line diagrams, structural engineering, electrical engineering, PE-stamped drawings (when required), load calculations, equipment layouts, utility interconnection documentation, battery storage engineering, EV charging design, and engineering support from project intake through permit approval.

Our permit-ready solar plan sets are customized to meet the requirements of your local building department and utility company. Depending on the project, a complete plan set may include:

• Site and roof layout drawings
• Single-line electrical diagrams
• Equipment specifications
• Structural and electrical calculations
• Load calculations
• Attachment and mounting details
• Required code compliance notes
• Complete material and equipment schedules
• Utility and permitting documentation

Every project is prepared to help streamline the permitting process and reduce review comments.

Yes. We can provide Professional Engineer (PE) stamps whenever they are required by your local jurisdiction or requested for your project. Our team works with licensed engineers to provide structural and electrical engineering review and stamped drawings that meet local permitting requirements.

Most residential solar engineering projects are completed within approximately one business day. Larger commercial or more complex systems typically require between 24 and 48 hours, depending on project size, engineering requirements, and the completeness of the information provided. Our goal is always to deliver accurate, permit-ready plans as quickly as possible without compromising quality.

The information required depends on the type of project.

For new construction projects, we typically request:

• Complete construction plan set
• Equipment specifications
• Material information
• Project address

For existing homes or buildings, we typically request:

• Property address
• Electrical panel photographs
• Roof information (if available)
• Equipment specifications
• Site photos when applicable

Providing complete information upfront helps us reduce turnaround time and avoid permit delays.

Yes. We provide solar engineering services for residential homes, commercial buildings, multifamily developments, industrial facilities, and utility-scale solar projects. Our engineering team supports projects ranging from small rooftop systems to large commercial and ground-mounted solar installations.

We proudly provide solar engineering services in all 50 states. While we support projects nationwide, our team has extensive experience with California permitting requirements, including California Title 24 compliance, utility requirements, and local Authority Having Jurisdiction (AHJ) standards.

Yes. When required, we provide both structural and electrical engineering services, including structural calculations, electrical load analysis, single-line diagrams, and Professional Engineer (PE) stamped drawings to meet local building department requirements.

Absolutely. If your building department or utility company requests revisions during the permit review process, our team will make the required corrections at no additional cost. We work closely with our clients to help move projects through permitting as efficiently as possible.

Yes. We prepare utility interconnection documentation and Permission to Operate (PTO) paperwork required by many utility providers. Our team helps ensure the necessary engineering documentation is complete for utility submission.

Yes. We provide engineering and permit plan services for battery energy storage systems (BESS) and electric vehicle (EV) charging installations. Our team can incorporate battery storage, backup power systems, and EV charging equipment into your solar project while meeting applicable electrical and permitting requirements.

We work with a wide range of clients across the solar industry, including:

• Solar contractors
• General contractors
• Home builders
• Developers
• EPC companies
• Electrical contractors
• Architects
• Engineers
• Property owners
• Homeowners

Whether you're managing one project or hundreds of installations each year, we can provide reliable engineering support.

Every project is reviewed by experienced solar designers who work in accordance with the latest National Electrical Code (NEC), applicable building codes, and local permitting requirements. When required, licensed Professional Engineers review and stamp the plans to ensure compliance with the applicable jurisdiction before submission.

Yes. Our team designs rooftop, ground-mounted, canopy, and solar carport systems for residential, commercial, and utility-scale applications. Every design is customized to maximize performance while meeting structural, electrical, and permitting requirements.

Daniel Solar Engineering is committed to delivering accurate, permit-ready solar engineering with competitive pricing and fast turnaround times. Our experienced team understands the permitting process, works closely with licensed Professional Engineers, and focuses on producing high-quality engineering packages that help contractors, builders, and developers keep projects moving. From residential rooftop systems to large commercial installations, we strive to provide responsive service, dependable engineering, and long-term support throughout the permitting process.

Pricing varies depending on the project size, system complexity, engineering requirements, jurisdiction, and whether structural or electrical PE stamps are required. We provide customized quotes to ensure you receive the engineering services that best fit your project's scope and budget.

Our process is designed to make permitting simple and efficient:

• Submit your project information and required documents.
• Our design team reviews the project requirements.
• We prepare the solar layout, electrical design, and engineering documentation.
• Structural and electrical engineering review and PE stamping are completed when required.
• We deliver a complete permit-ready solar plan set.
• If revisions are requested by the building department or utility company, we provide the necessary corrections to help your project receive approval.

Getting started is easy. Simply send us your project information by email or through our contact form.

For existing properties, please include:

• Property address
• Electrical panel photos
• Roof information (if available)
• Equipment specifications
• Site photos when available

For new construction projects, please include:

• Complete construction plan set
• Equipment specifications
• Material information
• Project address

Our structural engineering team calculates all roof and ground-mount layouts using active ASCE 7-16 and ASCE 7-22 structural criteria. We evaluate dead loads, live loads, ground snow loads, and local wind speed adjustments up to 180 mph to ensure full compliance with the International Residential Code (IRC) and International Building Code (IBC) guidelines dictated by your local building department.

Yes. We draft all electrical schematics, including single-line (SLD) and three-line diagrams, to match the exact code cycle adopted by your local Authority Having Jurisdiction (AHJ). Our designs seamlessly incorporate NEC 2017, NEC 2020, or NEC 2023 compliance parameters, explicitly detailing conductor ampacity sizing, voltage drop mitigation, overcurrent protection device (OCPD) coordination, and rapid shutdown system specifications.

Absolutely. We specialize in complex, multi-asset drafting that integrates PV generation with battery energy storage systems (BESS) and Level 2 or Level 3 DC Fast-Charging (DCFC) infrastructure. Our engineering packages include comprehensive electrical load aggregation, panel upgrade designs, and utility service capacity evaluations required for multi-source clean energy submittals.

All permit plan sets and engineering drawings are designed natively within professional AutoCAD environments. Upon project completion, we deliver high-resolution vector PDF files alongside native AutoCAD DWG and DXF files. This ensures your project files plug perfectly into your in-house project management pipeline and are fully ready for digital AHJ portal submittals.

For all projects located across Southern California and statewide, our designs are optimized for rapid Title 24 compliance, including mandatory solar-plus-storage integration for new construction pathways. We are intimately familiar with local municipal utility rules (such as LADWP, SCE, and SDG&E) and design our plan sets to easily clear strict local California AHJ amendments.

Yes. In addition to solar engineering, we provide standalone residential electrical design and electrical panel upgrade design for homes, ADUs, additions, and remodels—independent of whether a project includes solar. This includes panel schedules, single-line diagrams, service sizing, and load calculations prepared to meet NEC and local AHJ requirements.