Business Details
17 Years
experience
Renewable Energy Engineering & Solar Design Services
SepiSolar specializes in renewable energy projects with a focus on solar and energy storage solutions. Our team brings decades of combined experience in technical engagement, regulatory compliance, and project execution across federal and state jurisdictions. We provide cost-effective strategies without compromising speed or quality, ensuring projects are realized with precision and innovation. With expertise spanning development, planning, execution, and asset management, we serve as a trusted partner for clients seeking to optimize renewable energy infrastructure. Our engineers hold NABCEP certifications and maintain deep knowledge of industry codes, permitting processes, and utility interconnection standards.We emphasize transparency, ethical practices, and client-centric collaboration to deliver tailored solutions for residential, commercial, and utility-scale applications. Our leadership team includes recognized experts in solar technology, energy storage, and grid integration, with a proven track record in litigation support and expert witness services. We operate in all 50 U.S. states and have completed over 23,500 projects, demonstrating our commitment to advancing sustainable energy systems through technical excellence and operational efficiency.
Services
Solar Design
Energy Storage
Microgrid Systems
Expert Witness
Engineering Consulting
Permitting Services
Utility Interconnection
Asset Management
Technical Due Diligence
Code Compliance
Details
- Year established: 2009
Highlights and features
- We offer 120+ years of combined experience in renewable energy engineering and project execution.
- Our team holds NABCEP certifications and maintains expertise in all 50 states' regulatory frameworks.
- We provide end-to-end project lifecycle management from feasibility studies to asset optimization.
- Our engineers deliver patented solutions for solar-plus-storage integration and grid resilience.
- We maintain a 98% permit approval success rate through precise code-compliant design documentation.
Associations and certifications
- NABCEP
- CA Electrical Contractor License #516688
What people say
98% permit approval rate
NABCEP-certified engineers
Expert legal testimony
Nationwide service coverage
Code-compliant designs
Services
Solar Design Engineering
Our solar design engineers create customized photovoltaic systems for residential, commercial, and utility-scale applications. We produce complete permit-ready packages including electrical diagrams, structural calculations, and AHJ-compliant documentation. Our NABCEP-certified team optimizes system performance while ensuring adherence to NEC, UL standards, and local code requirements across all 50 states.
Energy Storage Solutions
We specialize in designing AC/DC-coupled energy storage systems using lithium, flow battery, and hybrid chemistries. Our engineers develop storage configurations for peak shaving, backup power, and grid services while addressing permitting challenges and utility interconnection protocols. We provide performance modeling and O&M strategies for systems ranging from residential to utility-scale deployments.
Expert Witness Services
Our CEO Josh Weiner offers expert witness testimony in solar-related litigation matters. With NABCEP certification and 15+ years in the industry, he provides technical analysis, delay assessments, and report preparation for construction disputes, patent cases, and contract disagreements. His expertise spans PV system design, energy storage integration, and regulatory compliance issues.
Microgrid Development
We design hybrid microgrids combining solar, wind, and storage with traditional generators for critical infrastructure applications. Our engineers address utility regulations, energy management software integration, and off-grid power requirements while ensuring system reliability for hospitals, data centers, and remote facilities requiring uninterrupted power supply.
Permitting Services
Our team secures project approvals through detailed understanding of local AHJ requirements and utility interconnection standards. We prepare comprehensive documentation packages including site plans, electrical schematics, and safety placards that achieve 98% first-submission approval rates. We maintain digital P.E. stamps for all 50 states to expedite permitting processes.
People
Josh Weiner
CEO
15+ years leading solar engineering projects, NABCEP-certified expert with teaching experience at UC Berkeley. Holds patent for energy storage systems and has testified in multiple arbitration cases as expert witness.
Rob Brown
VP of Growth
Former energy storage executive with Invinity Energy Systems. Specializes in market strategy and client relations with 12+ years in renewable energy sector across Fortune 500 and startup environments.
Peter Florin
Director of Operations
45-year electrical contracting veteran with CA license #516688. Expert in construction management, safety protocols, and large-scale project execution for renewable energy infrastructure.
Richard Dobbins
Planning Engineer
NABCEP-certified engineer with Professional Engineer licenses in multiple states. Specializes in solar system optimization and grid integration solutions for commercial and utility-scale projects.
Crystal Breshears
Controller
Certified accounting professional with 10+ years in renewable energy finance. Manages financial operations and accounting processes for complex solar and storage projects across multiple jurisdictions.
Questions
What solar engineering services does SepiSolar offer?
We provide complete solar design packages including electrical diagrams, structural calculations, and permit documentation for residential, commercial, and utility-scale projects nationwide.
Do you handle energy storage system design?
Yes, we design AC/DC-coupled battery systems using lithium, flow, and hybrid chemistries with integrated performance modeling and O&M strategies.
Are your engineers licensed in all states?
We maintain Professional Engineer stamps for all 50 states to support permitting and code compliance requirements across jurisdictions.
Can you assist with legal matters as expert witnesses?
Our CEO provides expert witness services in solar-related litigation, including technical analysis, delay assessments, and arbitration testimony.
How do you ensure code compliance?
Our NABCEP-certified team follows NEC, UL standards, and local AHJ requirements while maintaining 98% first-submission permit approval rates.
What microgrid solutions do you develop?
We design hybrid microgrids combining solar, wind, storage, and traditional generators for critical infrastructure requiring grid resilience and uninterrupted power supply.
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