{
    "name": "Grid Export Revenue Calculator",
    "url": "https://calculators.geekmidst.com/calculators/grid-export-revenue-calculator",
    "markdown": "https://calculators.geekmidst.com/calculators/grid-export-revenue-calculator.md",
    "category": "Energy & environment",
    "description": "Estimate yearly income from solar power exported to the grid at your export tariff, plus the value of the solar you use yourself at your import rate.",
    "summary": "Solar you use yourself saves the full import price; solar you export earns the export tariff. Splitting generation by your self-consumption share gives both values.",
    "also_called": [
        "Feed-in tariff calculator",
        "Solar export payment calculator"
    ],
    "applies_to": "Worldwide",
    "last_updated": "2026-10-29",
    "computation": "Results are computed in the visitor’s browser on the HTML page. This API describes the calculator; it does not compute results.",
    "inputs": [
        {
            "name": "generation",
            "label": "Yearly solar generation",
            "type": "number",
            "default": "5000",
            "unit": "kWh"
        },
        {
            "name": "self_use",
            "label": "Self-consumption",
            "type": "number",
            "default": "35",
            "unit": "%"
        },
        {
            "name": "export_rate",
            "label": "Export tariff per kWh",
            "type": "number",
            "default": "0.15"
        },
        {
            "name": "import_rate",
            "label": "Import price per kWh",
            "type": "number",
            "default": "0.28",
            "optional": true
        },
        {
            "name": "fee",
            "label": "Yearly export fees",
            "type": "number",
            "default": "0",
            "optional": true
        },
        {
            "name": "currency",
            "label": "Currency",
            "type": "currency",
            "default": "USD"
        }
    ],
    "outputs": [
        {
            "key": "export_revenue",
            "label": "Export income per year",
            "format": "currency"
        },
        {
            "key": "export_kwh",
            "label": "Energy exported",
            "format": "number"
        },
        {
            "key": "self_kwh",
            "label": "Energy used on site",
            "format": "number"
        },
        {
            "key": "avoided_cost",
            "label": "Bill saving from self-use",
            "format": "currency"
        },
        {
            "key": "total_benefit",
            "label": "Total yearly benefit",
            "format": "currency"
        }
    ],
    "formula": {
        "text": "Exported = Generation × (1 − Self-use%);  Export income = Exported × Export tariff;  Saving = Generation × Self-use% × Import price;  Total = Income + Saving − Fees",
        "variables": {
            "Self-use%": "share of generation consumed on site",
            "Export tariff": "payment per kWh exported",
            "Import price": "what you would otherwise pay per kWh"
        }
    },
    "worked_example": {
        "inputs": {
            "generation": "5000",
            "self_use": "35",
            "export_rate": "0.15",
            "import_rate": "0.28",
            "fee": "0",
            "currency": "USD"
        },
        "steps": [
            "Exported: 5,000 × 65% = 3,250 kWh × 0.15 = 487.50.",
            "Used on site: 1,750 kWh × 0.28 = 490.00 saved.",
            "Total benefit: 487.50 + 490.00 = 977.50 a year."
        ],
        "result": "With these example tariffs, exporting 3,250 kWh earns 487.50 and the 1,750 kWh used at home saves 490, a total of 977.50 a year."
    },
    "interpretation": "When the export tariff is well below the import price, each kWh you shift into your own use is worth more than one you export. That gap is what makes batteries, timers and EV charging during the day pay.",
    "assumptions": [
        "Flat export and import rates; time-of-use rates are averaged.",
        "Self-consumption is an annual average."
    ],
    "limitations": [
        "Export income may be taxable or capped in some schemes; check your contract."
    ],
    "rules": null,
    "faqs": [
        {
            "question": "How do I find my self-consumption?",
            "answer": "Subtract the exported kWh on your export meter from total generation on the inverter, then divide by total generation."
        },
        {
            "question": "Is this the same as net metering?",
            "answer": "No. Under net metering exports offset imports at a set credit rate over the billing period; use the Net Metering Estimate Calculator for that."
        }
    ],
    "sources": [],
    "related": [
        {
            "name": "Net Metering Estimate Calculator",
            "url": "https://calculators.geekmidst.com/calculators/net-metering-estimate-calculator"
        },
        {
            "name": "Solar Battery Storage Days Calculator",
            "url": "https://calculators.geekmidst.com/calculators/solar-battery-storage-days-calculator"
        },
        {
            "name": "Solar Panel Tilt Angle Calculator",
            "url": "https://calculators.geekmidst.com/calculators/solar-panel-tilt-angle-calculator"
        }
    ],
    "disclaimer": null,
    "publisher": "GM¹X CalcVerse"
}