{
  "version": "2026-11-02",
  "title": "SolarCalcNow reproducible planning scenarios: 12 states × 3 self-use shares × 3 export values",
  "evidenceType": "Synthetic calculations, not measured households, quotes, real utility bills or causal research.",
  "method": "Run calculateSolarEstimate with the complete input object in each row. State rates and production inputs come from linked snapshots. Production coverage: 10 full API responses, 0 rounded API yields and 2 explicit authored pre-loss assumptions. Costs use the disclosed marketplace-average ±20% author scenario. No API call occurs during generation.",
  "limitations": "A single author-selected production point is not a statewide average. No hourly matching, actual export tariff, financing, incentives, fixed charges, minimum bills or roof survey. Payback is simple gross-cost payback, not investment return.",
  "formulas": {
    "energyTarget": "900 kWh/month × 12 × 100% = 10800 kWh/year",
    "netACSize": "annual target / (yield × shade multiplier × additional loss factor); factor is 1 for net AC, 0.86 for any authored pre-loss input",
    "annualSavings": "min(selfConsumedKWh × retail + exportedKWh × exportRate, annualUsageKWh × retail)",
    "simplePayback": "gross cost / annual energy savings"
  },
  "rows": [
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      "input": {
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        "roofType": "unknown",
        "shade": "low",
        "panelWattage": 400,
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        "selfConsumptionPercent": 30,
        "exportValueAssumption": "retail-net-metering"
      },
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      "rateUSDPerKWh": 0.2975,
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      "productionEvidence": "official",
      "systemLossesIncluded": true,
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      "annualSavingsUSD": 3213,
      "remainingEnergyChargeUSD": 0,
      "paybackLowYears": 4.2565313703810475,
      "paybackHighYears": 6.363725118094439,
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        "/data/pvwatts-reference-2026-11-02.json",
        "/data/cost-benchmarks-2026-10-25.json"
      ]
    },
    {
      "input": {
        "stateSlug": "california",
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      "annualSavingsUSD": 1751.085,
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      "paybackHighYears": 11.676559849714566,
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        "/data/cost-benchmarks-2026-10-25.json"
      ]
    },
    {
      "input": {
        "stateSlug": "california",
        "monthlyUsageKWh": 900,
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      "input": {
        "stateSlug": "california",
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      "input": {
        "stateSlug": "california",
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      "input": {
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