Solar System Design Optimizer
Design optimized solar PV systems with load analysis and financial projections
What You Can Do
This skill transforms utility bills and site data into complete solar PV system designs that balance performance, cost, and reliability. You'll get accurately sized systems with specific equipment recommendations (modules, inverters, racking), performance projections, financial modeling including incentives and tax credits, and documentation ready for permitting and client presentations. It applies electrical engineering principles, industry standards (NEC, IEEE 1547), and regional solar resource data to identify constraints and optimize designs early in the process.
Features
calculates consumption patterns and peak demands to right-size systems accurately
uses location-specific irradiance data and orientation optimization to estimate annual production
specifies modules, inverters, racking, and balance-of-system components with performance ratings and compatibility checks
projects ROI, payback periods, and long-term savings with utility rate escalation and available incentives
generates equipment lists, specifications, and technical summaries suitable for permitting and client proposals
flags roof limitations, shading analysis, grid interconnection requirements, and structural considerations early
calculates backup power capacity and daily cycle requirements when solar + storage integration is needed
models multiple design options (different orientations, array configurations, financing approaches) to present trade-offs
Example Output
Residential 8kW System Design:
- Annual consumption: 12,400 kWh (from 12-month utility analysis)
- Recommended system: 8.32 kW DC (24x 347W modules) with 8kW string inverter
- Estimated annual production: 11,850 kWh (95% of load)
- First-year savings: $1,420 | 25-year NPV: $48,500
- Payback period: 7.2 years (after 30% federal tax credit)
Commercial 45kW System Design:
- Annual consumption: 78,600 kWh with summer peaks at 18 kW demand
- Recommended system: 48 kW DC (120x 400W modules) with three 15kW inverters
- Estimated annual production: 72,100 kWh (92% offset)
- 10-year NPV: $187,400 | Annual O&M cost: $850
- Roof assessment: South-facing 2,200 sq ft available (adequate for layout)
What's Included
- SKILL.md: Complete skill instructions with design methodology and best practices
- Load Analysis Template: Spreadsheet framework for converting utility bills to consumption profiles
- System Sizing Worksheet: Step-by-step PV array sizing based on location, tilt, and performance factors
- Equipment Selection Checklist: Component specification guide (modules, inverters, racking, BOP) with compatibility matrix
- Financial Modeling Framework: NPV calculator template including federal tax credits, state incentives, and utility rate scenarios
- Design Documentation Checklist: Permit-ready deliverable checklist (single-line diagram notes, equipment specs, performance summary)
Who It's For
- Solar engineers and designers — creating optimized system designs for permit applications and client proposals
- Sales engineers — sizing systems during client consultations and generating competitive proposals with financial analysis
- Project managers — validating system designs and financial projections before construction and procurement phases
- Energy consultants — performing site assessments and feasibility studies for residential and commercial clients
- Electrical contractors — designing PV systems and selecting equipment for installation projects
Best For
- Residential rooftop system design (3–15 kW) with consumption-based sizing
- Commercial rooftop and ground-mount designs (10–500+ kW) with demand optimization
- Load analysis from 12+ months of utility billing data to right-size systems
- Equipment specification for permitting, procurement, and vendor coordination
- Financial feasibility modeling with incentive analysis and payback projections
- Multi-scenario comparison to present design trade-offs and financing options
- Battery storage integration — sizing backup capacity for residential and commercial applications
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