Solar Panel Installation Calculator
Give your solar installation business an edge with an interactive cost calculator. This template helps potential customers understand the full cost of going solar, including panel quality options, battery storage, and the 30% federal tax credit. Visitors can see estimated annual savings and payback period based on their current electric bills. Capture qualified leads from homeowners ready to make the switch to solar energy.
Try the Calculator
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export function solarPanelInstallationCalculator(form: FormTs) {
// System size pricing per watt (before incentives)
const pricePerWatt: Record<string, number> = {
'standard': 2.75,
'premium': 3.25,
'high-efficiency': 3.75
};
// Roof type adjustments
const roofTypeMultipliers: Record<string, number> = {
'asphalt-shingle': 1.0,
'metal': 1.1,
'tile': 1.25,
'flat': 1.15,
'slate': 1.35
};
// Battery storage costs
const batteryPricing: Record<string, number> = {
'none': 0,
'basic': 8000,
'standard': 12000,
'premium': 18000
};
form.addRow(row => {
row.addTextPanel('header', {
computedValue: () => 'Solar Panel Installation Estimate',
customStyles: { 'font-size': '1.5rem', 'font-weight': '600', 'color': '#1e293b' }
});
});
form.addSpacer({ height: 20 });
// Service Location Section
const locationSection = form.addSubform('serviceLocation', { title: '📍 Installation Location' });
locationSection.addRow(row => {
row.addAddress('propertyAddress', {
label: 'Property Address',
placeholder: 'Enter your property address...',
showMap: true,
showDistance: true,
referenceAddress: {
formattedAddress: 'Service Center, Denver, CO',
coordinates: { lat: 39.7392, lng: -104.9903 }
},
restrictToCountries: ['US', 'CA'],
distanceUnit: 'miles',
isRequired: true
});
});
locationSection.addRow(row => {
row.addTextPanel('serviceAreaInfo', {
computedValue: () => {
const addressField = locationSection.address('propertyAddress');
const miles = addressField?.distance();
if (miles == null) return '📍 Enter address to check service area';
if (miles <= 30) return '📍 Within service area - No travel fee';
if (miles <= 60) return '📍 Extended area - $200 travel fee';
if (miles <= 100) return '📍 Remote area - $400 travel fee';
return '📍 Outside service area - Please call for availability';
},
customStyles: { 'font-size': '0.9rem', 'color': '#0369a1', 'background': '#e0f2fe', 'padding': '10px', 'border-radius': '6px' }
});
});
// Property Details Section
const propertySection = form.addSubform('propertyDetails', { title: '🏠 Property Details' });
propertySection.addRow(row => {
row.addDropdown('roofType', {
label: 'Roof Type',
options: [
{ id: 'asphalt-shingle', name: 'Asphalt Shingle' },
{ id: 'metal', name: 'Metal Roof' },
{ id: 'tile', name: 'Tile Roof' },
{ id: 'flat', name: 'Flat Roof' },
{ id: 'slate', name: 'Slate Roof' }
],
defaultValue: 'asphalt-shingle',
isRequired: true
}, '1fr');
row.addDropdown('roofAge', {
label: 'Roof Age',
options: [
{ id: 'new', name: 'Less than 5 years' },
{ id: 'moderate', name: '5-15 years' },
{ id: 'old', name: '15-25 years' },
{ id: 'very-old', name: 'Over 25 years' }
],
defaultValue: 'moderate',
isRequired: true
}, '1fr');
});
propertySection.addRow(row => {
row.addInteger('monthlyBill', {
label: 'Average Monthly Electric Bill ($)',
min: 50,
max: 1000,
defaultValue: 150,
placeholder: 'e.g. 150',
isRequired: true
}, '1fr');
row.addDropdown('sunExposure', {
label: 'Sun Exposure',
options: [
{ id: 'excellent', name: 'Excellent (Full sun)' },
{ id: 'good', name: 'Good (Some shade)' },
{ id: 'moderate', name: 'Moderate (Partial shade)' },
{ id: 'limited', name: 'Limited (Significant shade)' }
],
defaultValue: 'good',
isRequired: true
}, '1fr');
});
// System Configuration Section
const systemSection = form.addSubform('systemConfig', { title: '⚡ System Configuration' });
systemSection.addRow(row => {
row.addRadioButton('panelQuality', {
label: 'Panel Quality',
options: [
{ id: 'standard', name: 'Standard (18% efficiency)' },
{ id: 'premium', name: 'Premium (20% efficiency)' },
{ id: 'high-efficiency', name: 'High-Efficiency (22%+ efficiency)' }
],
defaultValue: 'standard',
orientation: 'vertical',
isRequired: true
});
});
systemSection.addRow(row => {
row.addSlider('systemSize', {
label: 'System Size (kW)',
min: 3,
max: 15,
step: 0.5,
defaultValue: 6,
showValue: true
});
});
systemSection.addRow(row => {
row.addRadioButton('batteryStorage', {
label: 'Battery Storage',
options: [
{ id: 'none', name: 'No Battery' },
{ id: 'basic', name: 'Basic (5 kWh) +$8,000' },
{ id: 'standard', name: 'Standard (10 kWh) +$12,000' },
{ id: 'premium', name: 'Premium (15 kWh) +$18,000' }
],
defaultValue: 'none',
orientation: 'vertical',
isRequired: true
});
});
// Additional Options Section
const addonsSection = form.addSubform('addons', { title: '✨ Additional Options' });
addonsSection.addRow(row => {
row.addCheckbox('monitoring', {
label: 'Smart Monitoring System (+$500)',
defaultValue: true
}, '1fr');
row.addCheckbox('evCharger', {
label: 'EV Charger Ready Wiring (+$800)',
defaultValue: false
}, '1fr');
});
addonsSection.addRow(row => {
row.addCheckbox('critterGuard', {
label: 'Critter Guard (+$400)',
defaultValue: false
}, '1fr');
row.addCheckbox('extendedWarranty', {
label: 'Extended Warranty (+$1,200)',
defaultValue: false
}, '1fr');
});
addonsSection.addRow(row => {
row.addCheckbox('roofReinforcement', {
label: 'Roof Reinforcement (if needed) (+$2,500)',
defaultValue: false,
isVisible: () => {
const roofAge = propertySection.dropdown('roofAge')?.value();
return roofAge === 'old' || roofAge === 'very-old';
}
}, '1fr');
});
form.addSpacer({ height: 20, showLine: true, lineStyle: 'dashed' });
// Helper to calculate travel fee
const getTravelFee = () => {
const addressField = locationSection.address('propertyAddress');
const miles = addressField?.distance();
if (miles == null || miles <= 30) return 0;
if (miles <= 60) return 200;
if (miles <= 100) return 400;
return 600;
};
// Price Summary Section
const summarySection = form.addSubform('summary', { title: '💰 Cost Breakdown', isCollapsible: false });
summarySection.addRow(row => {
row.addPriceDisplay('systemCost', {
label: 'Solar Panel System',
computedValue: () => {
const panelQuality = systemSection.radioButton('panelQuality')?.value() || 'standard';
const systemSize = systemSection.slider('systemSize')?.value() || 6;
const roofType = propertySection.dropdown('roofType')?.value() || 'asphalt-shingle';
const basePrice = pricePerWatt[panelQuality] || 2.75;
const roofMultiplier = roofTypeMultipliers[roofType] || 1.0;
const systemWatts = systemSize * 1000;
return Math.round(systemWatts * basePrice * roofMultiplier);
},
variant: 'default'
}, '1fr');
row.addPriceDisplay('batteryCost', {
label: 'Battery Storage',
computedValue: () => {
const battery = systemSection.radioButton('batteryStorage')?.value() || 'none';
return batteryPricing[battery] || 0;
},
variant: 'default',
prefix: '+'
}, '1fr');
});
summarySection.addRow(row => {
row.addPriceDisplay('addonsCost', {
label: 'Additional Options',
computedValue: () => {
let total = 0;
if (addonsSection.checkbox('monitoring')?.value()) total += 500;
if (addonsSection.checkbox('evCharger')?.value()) total += 800;
if (addonsSection.checkbox('critterGuard')?.value()) total += 400;
if (addonsSection.checkbox('extendedWarranty')?.value()) total += 1200;
if (addonsSection.checkbox('roofReinforcement')?.value()) total += 2500;
return total;
},
variant: 'default',
prefix: '+'
}, '1fr');
row.addPriceDisplay('travelFee', {
label: 'Travel Fee',
computedValue: () => getTravelFee(),
variant: 'default',
prefix: '+',
isVisible: () => getTravelFee() > 0
}, '1fr');
});
summarySection.addRow(row => {
row.addPriceDisplay('federalTaxCredit', {
label: 'Federal Tax Credit (30%)',
computedValue: () => {
const panelQuality = systemSection.radioButton('panelQuality')?.value() || 'standard';
const systemSize = systemSection.slider('systemSize')?.value() || 6;
const roofType = propertySection.dropdown('roofType')?.value() || 'asphalt-shingle';
const battery = systemSection.radioButton('batteryStorage')?.value() || 'none';
const basePrice = pricePerWatt[panelQuality] || 2.75;
const roofMultiplier = roofTypeMultipliers[roofType] || 1.0;
const systemWatts = systemSize * 1000;
const systemCost = systemWatts * basePrice * roofMultiplier;
const batteryCost = batteryPricing[battery] || 0;
let addonsCost = 0;
if (addonsSection.checkbox('monitoring')?.value()) addonsCost += 500;
if (addonsSection.checkbox('evCharger')?.value()) addonsCost += 800;
if (addonsSection.checkbox('critterGuard')?.value()) addonsCost += 400;
if (addonsSection.checkbox('extendedWarranty')?.value()) addonsCost += 1200;
if (addonsSection.checkbox('roofReinforcement')?.value()) addonsCost += 2500;
const travelFee = getTravelFee();
const totalBeforeCredit = systemCost + batteryCost + addonsCost + travelFee;
return -Math.round(totalBeforeCredit * 0.30);
},
variant: 'success',
prefix: ''
});
});
const finalSection = form.addSubform('final', {
title: '☀️ Your Estimate',
isCollapsible: false,
sticky: 'bottom'
});
finalSection.addRow(row => {
row.addPriceDisplay('totalCost', {
label: 'Estimated Cost After Incentives',
computedValue: () => {
const panelQuality = systemSection.radioButton('panelQuality')?.value() || 'standard';
const systemSize = systemSection.slider('systemSize')?.value() || 6;
const roofType = propertySection.dropdown('roofType')?.value() || 'asphalt-shingle';
const battery = systemSection.radioButton('batteryStorage')?.value() || 'none';
const basePrice = pricePerWatt[panelQuality] || 2.75;
const roofMultiplier = roofTypeMultipliers[roofType] || 1.0;
const systemWatts = systemSize * 1000;
const systemCost = systemWatts * basePrice * roofMultiplier;
const batteryCost = batteryPricing[battery] || 0;
let addonsCost = 0;
if (addonsSection.checkbox('monitoring')?.value()) addonsCost += 500;
if (addonsSection.checkbox('evCharger')?.value()) addonsCost += 800;
if (addonsSection.checkbox('critterGuard')?.value()) addonsCost += 400;
if (addonsSection.checkbox('extendedWarranty')?.value()) addonsCost += 1200;
if (addonsSection.checkbox('roofReinforcement')?.value()) addonsCost += 2500;
const travelFee = getTravelFee();
const totalBeforeCredit = systemCost + batteryCost + addonsCost + travelFee;
const federalCredit = totalBeforeCredit * 0.30;
return Math.round(totalBeforeCredit - federalCredit);
},
variant: 'large'
}, '1fr');
row.addPriceDisplay('estimatedSavings', {
label: 'Estimated Annual Savings',
computedValue: () => {
const monthlyBill = propertySection.integer('monthlyBill')?.value() || 150;
const sunExposure = propertySection.dropdown('sunExposure')?.value() || 'good';
const exposureMultiplier: Record<string, number> = {
'excellent': 0.95,
'good': 0.85,
'moderate': 0.70,
'limited': 0.50
};
const offsetPercent = exposureMultiplier[sunExposure] || 0.85;
return Math.round(monthlyBill * 12 * offsetPercent);
},
variant: 'success',
suffix: '/year'
}, '1fr');
});
finalSection.addRow(row => {
row.addTextPanel('payback', {
computedValue: () => {
const panelQuality = systemSection.radioButton('panelQuality')?.value() || 'standard';
const systemSize = systemSection.slider('systemSize')?.value() || 6;
const roofType = propertySection.dropdown('roofType')?.value() || 'asphalt-shingle';
const battery = systemSection.radioButton('batteryStorage')?.value() || 'none';
const monthlyBill = propertySection.integer('monthlyBill')?.value() || 150;
const sunExposure = propertySection.dropdown('sunExposure')?.value() || 'good';
const basePrice = pricePerWatt[panelQuality] || 2.75;
const roofMultiplier = roofTypeMultipliers[roofType] || 1.0;
const systemWatts = systemSize * 1000;
const systemCost = systemWatts * basePrice * roofMultiplier;
const batteryCost = batteryPricing[battery] || 0;
let addonsCost = 0;
if (addonsSection.checkbox('monitoring')?.value()) addonsCost += 500;
if (addonsSection.checkbox('evCharger')?.value()) addonsCost += 800;
if (addonsSection.checkbox('critterGuard')?.value()) addonsCost += 400;
if (addonsSection.checkbox('extendedWarranty')?.value()) addonsCost += 1200;
if (addonsSection.checkbox('roofReinforcement')?.value()) addonsCost += 2500;
const travelFee = getTravelFee();
const totalCost = (systemCost + batteryCost + addonsCost + travelFee) * 0.70;
const exposureMultiplier: Record<string, number> = {
'excellent': 0.95,
'good': 0.85,
'moderate': 0.70,
'limited': 0.50
};
const annualSavings = monthlyBill * 12 * (exposureMultiplier[sunExposure] || 0.85);
const paybackYears = Math.round(totalCost / annualSavings * 10) / 10;
return `Estimated payback period: ${paybackYears} years`;
},
customStyles: { 'font-size': '0.95rem', 'color': '#059669', 'font-weight': '500' }
});
});
finalSection.addRow(row => {
row.addTextPanel('disclaimer', {
computedValue: () => 'Estimates based on average costs. Final price depends on site assessment. Additional state/local incentives may apply.',
customStyles: { 'font-size': '0.85rem', 'color': '#64748b', 'font-style': 'italic' }
});
});
form.configureSubmitButton({
label: 'Get Free Quote'
});
}
Frequently Asked Questions
Can I customize the pricing for my local market?
Yes. You can adjust the price per watt, roof type multipliers, battery costs, and add-on pricing to match your actual installation costs in your service area.
Does it include federal and state incentives?
The template includes the 30% federal tax credit by default. You can add state-specific incentives, rebates, or utility credits to reflect the full savings in your area.
Can I add different panel brands?
Yes. You can customize the panel quality options to show specific brands you install, with their actual efficiency ratings and pricing.
How accurate are the savings estimates?
The savings are calculated based on the customer's monthly bill and sun exposure. You can adjust the formulas to match real-world production data from your installations.
Can I collect customer information for follow-up?
Yes. The submit button captures contact details so you can follow up with qualified leads. Connect to your CRM via webhooks for automatic lead routing.