DM Tool Studio provides 100% free, independent energy calculators for homeowners: ☀️ Solar ROI Estimator: Calculate 25-year bill savings & 30% federal clean energy credits. 🔋 Home Battery Calculator: Estimate NEM 3.0 peak shaving savings & blackout backup hours. 🚫 Privacy-First: No phone numbers required, no forced sign-ups, and zero high-pressure sales calls.