Home Energy Savings Calculator
Your Energy Profile
Find this on your electricity bill or check your provider's rates.
Energy Savings Actions
Select the actions you are willing to take or have already implemented.
(Only applicable if you use an electric clothes dryer)
Estimate any other energy-saving habits not listed (e.g., air drying clothes/dishes).
Estimated Savings
Please complete your energy profile and select savings actions to see results.
Total Estimated Monthly Savings: $${totalMonthlySavings.toFixed(2)}
`; html += `Total Estimated Annual Savings: $${(totalMonthlySavings * 12).toFixed(2)}
`; html += `New Estimated Monthly Bill: $${(inputs.actualMonthlyBill - totalMonthlySavings).toFixed(2)}
`; } else { html += "No savings actions selected, or savings are zero.
"; } html += "Note: These are estimations. Actual savings can vary based on usage patterns, appliance efficiency, climate, and other factors.
"; summaryDiv.innerHTML = html; } function hesc_generatePdf() { const inputs = hesc_getUserInputs(); // Get fresh data const { jsPDF } = window.jspdf; const doc = new jsPDF(); const results = []; let totalMonthlySavings = 0; // Re-calculate for PDF to ensure consistency // LED Lighting if (inputs.actions.led) { const kwhSaved = inputs.totalMonthlyKWh * HESC_CONSTANTS.LIGHTING_SHARE_OF_BILL * HESC_CONSTANTS.LED_SAVING_ON_LIGHTING_PORTION; const moneySaved = kwhSaved * inputs.costPerKWh; results.push({ item: "LED Lighting Upgrade", monthly: moneySaved, annual: moneySaved * 12 }); totalMonthlySavings += moneySaved; } // Refrigerator if (inputs.actions.refrigerator) { const moneySaved = (HESC_CONSTANTS.REFRIGERATOR_ANNUAL_KWH_SAVING / 12) * inputs.costPerKWh; results.push({ item: "ENERGY STAR Refrigerator", monthly: moneySaved, annual: moneySaved * 12 }); totalMonthlySavings += moneySaved; } // Washer if (inputs.actions.washer) { const moneySaved = (HESC_CONSTANTS.WASHER_ANNUAL_KWH_SAVING / 12) * inputs.costPerKWh; results.push({ item: "ENERGY STAR Washer", monthly: moneySaved, annual: moneySaved * 12 }); totalMonthlySavings += moneySaved; } // Electric Dryer if (inputs.actions.electricDryer) { const moneySaved = (HESC_CONSTANTS.ELECTRIC_DRYER_ANNUAL_KWH_SAVING / 12) * inputs.costPerKWh; results.push({ item: "ENERGY STAR Electric Dryer", monthly: moneySaved, annual: moneySaved * 12 }); totalMonthlySavings += moneySaved; } // HVAC (Thermostat) if (inputs.actions.useElectricHvac && inputs.actions.thermostat) { const kwhSaved = inputs.totalMonthlyKWh * HESC_CONSTANTS.HVAC_SHARE_OF_BILL * HESC_CONSTANTS.THERMOSTAT_SAVING_ON_HVAC_PORTION; const moneySaved = kwhSaved * inputs.costPerKWh; results.push({ item: "Thermostat Optimization (Electric HVAC)", monthly: moneySaved, annual: moneySaved * 12 }); totalMonthlySavings += moneySaved; } // Electric Water Heater if (inputs.actions.useElectricWaterHeater) { if (inputs.actions.waterHeaterTemp) { const kwhSaved = inputs.totalMonthlyKWh * HESC_CONSTANTS.ELECTRIC_WATER_HEATER_SHARE_OF_BILL * HESC_CONSTANTS.WATER_HEATER_TEMP_SAVING_ON_WATER_HEATING_PORTION; const moneySaved = kwhSaved * inputs.costPerKWh; results.push({ item: "Lower Electric Water Heater Temp.", monthly: moneySaved, annual: moneySaved * 12 }); totalMonthlySavings += moneySaved; } if (inputs.actions.lowFlowFixtures) { const kwhSaved = inputs.totalMonthlyKWh * HESC_CONSTANTS.ELECTRIC_WATER_HEATER_SHARE_OF_BILL * HESC_CONSTANTS.LOW_FLOW_SAVING_ON_WATER_HEATING_PORTION; const moneySaved = kwhSaved * inputs.costPerKWh; results.push({ item: "Low-Flow Fixtures (Electric Water Heater)", monthly: moneySaved, annual: moneySaved * 12 }); totalMonthlySavings += moneySaved; } } // Phantom Load if (inputs.actions.phantomLoad) { const moneySaved = inputs.actualMonthlyBill * HESC_CONSTANTS.PHANTOM_LOAD_SAVING_ON_TOTAL_BILL; results.push({ item: "Phantom Load Reduction", monthly: moneySaved, annual: moneySaved * 12 }); totalMonthlySavings += moneySaved; } // Other Savings if (inputs.actions.otherSavings > 0) { results.push({ item: "Other User-Defined Savings", monthly: inputs.actions.otherSavings, annual: inputs.actions.otherSavings * 12 }); totalMonthlySavings += inputs.actions.otherSavings; } const primaryColor = getComputedStyle(document.documentElement).getPropertyValue('--primary-color').trim(); const accentColor = getComputedStyle(document.documentElement).getPropertyValue('--accent-color').trim(); const textColor = getComputedStyle(document.documentElement).getPropertyValue('--text-color').trim(); let yPos = 20; doc.setFontSize(20); doc.setTextColor(primaryColor); doc.text("Home Energy Savings Report", doc.internal.pageSize.getWidth() / 2, yPos, { align: 'center' }); yPos += 15; doc.setFontSize(12); doc.setTextColor(textColor); doc.text(`Current Estimated Monthly Bill: $${inputs.actualMonthlyBill.toFixed(2)}`, 14, yPos); yPos += 7; doc.text(`Based on: ${inputs.totalMonthlyKWh.toFixed(2)} kWh/month at $${inputs.costPerKWh.toFixed(4)}/kWh`, 14, yPos); yPos += 10; if (results.length > 0) { const tableData = results.map(r => [r.item, `$${r.monthly.toFixed(2)}`, `$${r.annual.toFixed(2)}`]); doc.autoTable({ startY: yPos, head: [['Saving Action', 'Est. Monthly Saving', 'Est. Annual Saving']], body: tableData, theme: 'grid', headStyles: { fillColor: primaryColor, textColor: '#ffffff' }, styles: { font: 'Arial', fontSize: 10 }, didDrawPage: function (data) { yPos = data.cursor.y; } // Update yPos in case of page break }); yPos = doc.lastAutoTable.finalY + 10; // Get yPos after table } else { doc.text("No specific savings actions were selected for this report.", 14, yPos); yPos +=7; } doc.setFontSize(14); doc.setTextColor(textColor); doc.text(`Total Estimated Monthly Savings: `, 14, yPos); doc.setTextColor(accentColor); doc.text(`$${totalMonthlySavings.toFixed(2)}`, 90, yPos); yPos += 8; doc.setTextColor(textColor); doc.text(`Total Estimated Annual Savings: `, 14, yPos); doc.setTextColor(accentColor); doc.text(`$${(totalMonthlySavings * 12).toFixed(2)}`, 90, yPos); yPos += 8; doc.setTextColor(textColor); doc.text(`New Estimated Monthly Bill: `, 14, yPos); doc.setFont(undefined, 'bold'); doc.setTextColor(accentColor); doc.text(`$${(inputs.actualMonthlyBill - totalMonthlySavings).toFixed(2)}`, 90, yPos); yPos += 12; doc.setFont(undefined, 'normal'); doc.setFontSize(9); doc.setTextColor(100); // Gray color doc.text("Note: These are estimations. Actual savings can vary based on usage patterns, specific appliance efficiencies, climate, and other factors.", 14, yPos); doc.save('home_energy_savings_report.pdf'); } // Initialize document.addEventListener('DOMContentLoaded', () => { // hesc_tabs, hesc_tabButtons, hesc_prevBtn, hesc_nextBtn are already defined globally for this script hesc_showTab(0); // Show the first tab initially hesc_toggleConsumptionInput(); // Set initial visibility for consumption inputs hesc_toggleHvacOptions(); hesc_toggleWaterHeaterOptions(); // Define primary color RGB for box-shadow focus (example) document.documentElement.style.setProperty('--primary-color-rgb', '42, 109, 244'); });