Solar Energy Expert Witness Services
Meet Our Solar Energy Expert Witness
Joshua Weiner, CEO of SepiSolar, provides expert witness services and case review for construction law and civil litigation firms representing plaintiffs and defense. Weiner can fulfill your expert witness search and support discovery, analysis, and fact-finding for projects that result of a financial loss, technical failure, or contractual claim.
Professional Expertise
As a solar pv expert witness, Weiner brings knowledge of law, policy, technology, contracts, finance, permits and entitlements, project development and construction, data acquisition and analysis that commonly apply to renewable energy and distributed energy projects.
Specific areas of expertise, listed below, include energy technologies, markets, policy, finance, project development, planning and execution, project management, and codes and standards.
Weiner is adept at unpacking complex topics into simple language that all parties can understand.
Since 2007, Weiner is a certified member of the North American Board of Certified Energy Practitioners (NABCEP) in good standing. Weiner has also taught advanced solar system design and project management at UC Berkeley.
Josh Weiner, Solar Expert Witness
Areas of Expertise
Energy Technologies
- Solar
- Batteries & Energy Storage
- Microgrids
Markets
- Utility-Scale
- Commercial & Industrial
- Agricultural
- Residential
Policy
- Tariff Rates
- Net Energy Metering (NEM)
- Interconnection Agreements
Finance
- Incentive Programs & Structures
- Financing Programs & Structures
Project Development
- Performance Modeling & Simulation
- Financial Modeling
- Contract Structures
- Ownership Models
Project Planning & Execution
- Construction Management
- Sales Proposals, Pro Formas & Cash Flow Statements
- Technical Design
- Project Engineering
- Owner’s Engineering
- Independent Engineering
- System Design & Architecture
- Control Strategies & Microgrid Operations
Project Management
- Technology Due Diligence
- Product & Vendor Selection
- Product Warranties, Guarantees & Liabilities
- Operations & Maintenance
- Data Acquisition & Monitoring
Codes & Standards
- Health & Safety
- National Electrical Code
- UL
- Municipal Permits
- Industry Codes & Standards
- Solar Rights Act
Expert Witness experience
In addition to consulting for NEXTracker, NRG Home Solar, and Green Charge Networks (now, ENGIE Storage), the below is a summary of Weiner’s expert witness experience.
- Reviewed disputes and claims between project owners and Engineering, Procurement, and Construction (EPC) design-build companies involving contract, project, and construction documents as well as monitoring and performance data
- Performed discovery and analysis (financial, technical, regulatory) to identify complex issues, then translating and articulating them in relatively simple terms
- Performed project site visits and inspections to verify and analyze system health, performance, construction defects, regulatory compliance, contractual compliance, and utility interconnection compliance
Professional Experience
Weiner’s professional experience includes engineering and design for
- 1,000+ residential systems (5+ MW overall)
- 200+ commercial, industrial, agricultural systems (50+ MW overall)
- 12+ utility-scale systems (70+ MW overall)
- 15+ utility-interactive energy storage systems (8+ MWh overall)
Education
BA in Astrophysics (minors in Physics & Music), UC Berkeley
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