Solar Investment Tax Credit (ITC) Calculator

Solar ITC 2026 details: Residential: 30% federal tax credit on full system cost (no cap); applies to solar panels, battery storage (Powerwall $11,500), installation; Example: $30,000 system = $9,000 tax credit, net cost $21,000; Commercial/Investment Property: 30% ITC base + potential 10% domestic content bonus + 10% energy community bonus = up to 50% ITC; must be installed and placed in service; carryforward: unused credit carries forward to future tax years. State incentives (2026): California: Net Energy Metering 3.0 + $1,000 Self-Generation Incentive; New York: 25% state credit (up to $5,000) + ConEd rebates; Massachusetts: SMART program 6-9 cents/kWh; Texas: no state income tax so no state credit but property tax exemption; SREC markets: NJ, PA, MA, DC pay $50-300/SREC (1 SREC = 1,000 kWh generated).

Solar 25-year ROI analysis: Average system cost 2026: $25,000-35,000 for 8-10kW system before ITC; After 30% ITC: $17,500-24,500; Annual electricity savings: $1,500-2,500 (varies by utility rate); Simple payback period: 7-10 years; 25-year savings: $37,500-62,500 at 2% utility rate escalation; Net 25-year ROI: $13,000-45,000 profit; IRR: typically 8-12% depending on location; Additional considerations: Home value increase: $4/watt installed ($32,000 for 8kW system per Zillow study); Property tax exemption: many states exempt solar from property tax assessment; Battery storage (Tesla Powerwall 3): $11,500 + installation, 30% ITC applies; Virtual Power Plant participation (VPP) programs pay $300-500/year.

Family offices (single or multi) make sense at $50M+ in investable assets. Below that, private banking (JP Morgan Private Bank, Goldman Sachs PWM, UBS) offers similar services with lower minimums ($5-25M). Family offices provide consolidated reporting, direct deal access, and custom investment mandates unavailable at private banks. Multi-family offices (Bessemer Trust, Glenmede) offer a middle ground at $10M+ with family-office-level service at lower cost.

Most wealth advisors recommend 3-5% of liquid net worth in cash/cash equivalents for UHNW individuals — enough to cover 12-24 months of lifestyle expenses plus opportunistic investments. Excess cash above this benchmark costs 5-8% annually in opportunity cost vs. diversified portfolios. Treasury bills, money market funds, and short-duration bonds provide liquidity with yield while maintaining capital preservation objectives.