AI Home Device Energy Savings Calculator
ANA›Life Services Authority›National Calculator Authority›AI Home Device Energy Savings Calculator
.calc-container { max-width: 640px; margin: 2rem 0; padding: 1.5rem; background: #fff; border: 1px solid #ddd; border-radius: 8px; box-shadow: 0 1px 3px rgba(0,0,0,0.06); font-family: system-ui, -apple-system, sans-serif; } .calc-container h3 { font-family: Georgia, serif; font-size: 1.15rem; color: #1a1a1a; margin-bottom: 1rem; padding-bottom: 0.5rem; border-bottom: 2px solid var(--ac, #3d5a80); } .calc-row { display: flex; align-items: center; gap: 0.75rem; margin-bottom: 0.75rem; flex-wrap: wrap; } .calc-row label { min-width: 160px; font-size: 0.9rem; color: #333; font-weight: 500; } .calc-row input[type="number"], .calc-row select { flex: 1; min-width: 120px; max-width: 200px; padding: 0.5rem 0.6rem; border: 1px solid #ccc; border-radius: 4px; font-size: 0.9rem; font-family: system-ui, sans-serif; color: #1a1a1a; background: #fafaf8; } .calc-row input:focus, .calc-row select:focus { outline: none; border-color: var(--ac, #3d5a80); box-shadow: 0 0 0 2px rgba(26,74,138,0.12); } .calc-row .unit { font-size: 0.82rem; color: #888; min-width: 30px; } .calc-btn { display: inline-block; margin-top: 0.5rem; padding: 0.55rem 1.5rem; background: var(--ac, #3d5a80); color: #fff; border: none; border-radius: 4px; font-size: 0.9rem; font-weight: 600; cursor: pointer; font-family: system-ui, sans-serif; } .calc-btn:hover { opacity: 0.9; } .calc-result { margin-top: 1.25rem; padding: 1rem 1.25rem; background: #f0f6fc; border-left: 3px solid var(--ac, #3d5a80); border-radius: 0 6px 6px 0; display: none; } .calc-result.visible { display: block; } .calc-result-label { font-size: 0.78rem; text-transform: uppercase; letter-spacing: 0.06em; color: #666; margin-bottom: 0.25rem; } .calc-result-value { font-size: 1.6rem; font-weight: 700; color: var(--ac, #3d5a80); } .calc-result-detail { font-size: 0.85rem; color: #555; margin-top: 0.5rem; line-height: 1.5; } .calc-note { margin-top: 1rem; font-size: 0.8rem; color: #888; font-style: italic; } .calc-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 0.75rem; margin-top: 0.75rem; } .calc-grid-item { padding: 0.6rem 0.8rem; background: #f8f9fa; border-radius: 4px; border: 1px solid #eee; } .calc-grid-item .label { font-size: 0.75rem; color: #888; text-transform: uppercase; letter-spacing: 0.04em; } .calc-grid-item .value { font-size: 1.1rem; font-weight: 600; color: #1a1a1a; } @media (max-width: 720px) { .calc-row { flex-direction: column; align-items: flex-start; gap: 0.3rem; } .calc-row label { min-width: auto; } .calc-row input[type="number"], .calc-row select { max-width: 100%; width: 100%; } .calc-grid { grid-template-columns: 1fr; } } .calc-chart { margin: 1rem 0; text-align: center; } .calc-chart svg { max-width: 100%; height: auto; } .calc-chart-legend { display: flex; flex-wrap: wrap; justify-content: center; gap: 0.6rem 1.2rem; margin-top: 0.6rem; font-size: 0.8rem; color: #555; } .calc-chart-legend span { display: inline-flex; align-items: center; gap: 0.3rem; } .calc-chart-legend i { display: inline-block; width: 10px; height: 10px; border-radius: 2px; font-style: normal; } .calc-related { max-width: 640px; margin: 2rem 0 1rem; padding: 1.25rem 1.5rem; background: #f8f9fa; border: 1px solid #e8e8e8; border-radius: 8px; } .calc-related h3 { font-family: Georgia, serif; font-size: 1rem; color: #1a1a1a; margin: 0 0 0.75rem; padding-bottom: 0.4rem; border-bottom: 2px solid var(--ac, #3d5a80); } .calc-related-list { list-style: none; padding: 0; margin: 0 0 0.75rem; display: grid; grid-template-columns: 1fr 1fr; gap: 0.4rem 1.5rem; } .calc-related-list li a { font-size: 0.88rem; color: var(--ac, #3d5a80); text-decoration: none; } .calc-related-list li a:hover { text-decoration: underline; } .calc-browse-all { margin: 0.5rem 0 0; font-size: 0.9rem; font-weight: 600; } .calc-browse-all a { color: var(--ac, #3d5a80); text-decoration: none; } .calc-browse-all a:hover { text-decoration: underline; } @media (max-width: 720px) { .calc-related-list { grid-template-columns: 1fr; } }
AI Home Device Energy Savings Calculator
Estimate annual energy and cost savings when replacing traditional home devices with AI-powered smart equivalents (smart thermostats, smart lighting, smart appliances).
### Electricity & Usage
Electricity Rate ($/kWh)
Average Home Occupancy (hours/day)
### HVAC / Thermostat
HVAC System Power (Watts)
HVAC Daily Run Time (hours/day)
Smart Thermostat Savings (%)
### Lighting
Total Lighting Load (Watts)
Daily Lighting Hours (hours/day)
Smart Lighting Savings (%)
### Appliances (Washer, Dryer, Dishwasher, etc.)
Total Appliance Load (Watts)
Daily Appliance Run Time (hours/day)
Smart Appliance Savings (%)
### Standby / Phantom Load
Total Standby Power (Watts)
Smart Plug / AI Standby Savings (%)
Calculate Savings
function aiCalcSavings() { // --- Inputs --- var rate = parseFloat(document.getElementById('ai-electricity-rate').value); var hvacW = parseFloat(document.getElementById('ai-hvac-watts').value); var hvacH = parseFloat(document.getElementById('ai-hvac-hours').value); var hvacPct = parseFloat(document.getElementById('ai-hvac-savings-pct').value) / 100; var lightW = parseFloat(document.getElementById('ai-lighting-watts').value); var lightH = parseFloat(document.getElementById('ai-lighting-hours').value); var lightPct = parseFloat(document.getElementById('ai-lighting-savings-pct').value) / 100; var appW = parseFloat(document.getElementById('ai-appliance-watts').value); var appH = parseFloat(document.getElementById('ai-appliance-hours').value); var appPct = parseFloat(document.getElementById('ai-appliance-savings-pct').value) / 100; var standbyW = parseFloat(document.getElementById('ai-standby-watts').value); var standbyPct = parseFloat(document.getElementById('ai-standby-savings-pct').value) / 100;
// --- Validation --- var errors = []; if (isNaN(rate) || rate 0."); if (isNaN(hvacW) || hvacW 24) errors.push("HVAC hours must be 0–24."); if (isNaN(hvacPct) || hvacPct 0.50) errors.push("Smart thermostat savings must be 0–50%."); if (isNaN(lightW) || lightW 24) errors.push("Lighting hours must be 0–24."); if (isNaN(lightPct) || lightPct 0.80) errors.push("Smart lighting savings must be 0–80%."); if (isNaN(appW) || appW 24) errors.push("Appliance hours must be 0–24."); if (isNaN(appPct) || appPct 0.50) errors.push("Smart appliance savings must be 0–50%."); if (isNaN(standbyW) || standbyW 0.80) errors.push("Standby savings must be 0–80%.");
var resultDiv = document.getElementById('ai-result'); if (errors.length > 0) { resultDiv.style.display = 'block'; resultDiv.innerHTML = 'Please fix the following:' + errors.map(function(e){ return ''; }).join('') + ''; return; }
// --- Core Formula --- // Annual energy consumed (kWh/year) = (Watts / 1000) * hours_per_day * 365 // Annual energy saved (kWh/year) = Annual energy consumed * savings fraction // Annual cost saved ($) = Annual energy saved * electricity rate
var DAYS = 365;
// HVAC var hvacAnnualKwh = (hvacW / 1000) * hvacH * DAYS; var hvacSavedKwh = hvacAnnualKwh * hvacPct; var hvacSavedCost = hvacSavedKwh * rate;
// Lighting var lightAnnualKwh = (lightW / 1000) * lightH * DAYS; var lightSavedKwh = lightAnnualKwh * lightPct; var lightSavedCost = lightSavedKwh * rate;
// Appliances var appAnnualKwh = (appW / 1000) * appH * DAYS; var appSavedKwh = appAnnualKwh * appPct; var appSavedCost = appSavedKwh * rate;
// Standby (runs 24 h/day) var standbyAnnualKwh = (standbyW / 1000) * 24 * DAYS; var standbySavedKwh = standbyAnnualKwh * standbyPct; var standbySavedCost = standbySavedKwh * rate;
// Totals var totalBaselineKwh = hvacAnnualKwh + lightAnnualKwh + appAnnualKwh + standbyAnnualKwh; var totalSavedKwh = hvacSavedKwh + lightSavedKwh + appSavedKwh + standbySavedKwh; var totalSavedCost = hvacSavedCost + lightSavedCost + appSavedCost + standbySavedCost; var totalSavedPct = totalBaselineKwh > 0 ? (totalSavedKwh / totalBaselineKwh) * 100 : 0;
// CO2 avoided: US average 0.386 kg CO2 per kWh (EPA eGRID 2022) var CO2_FACTOR = 0.386; var co2SavedKg = totalSavedKwh * CO2_FACTOR; var co2SavedTons = co2SavedKg / 1000;
// 5-year & 10-year projections (no inflation adjustment for simplicity) var saved5yr = totalSavedCost * 5; var saved10yr = totalSavedCost * 10;
// --- Format helpers --- function fmt(n, d) { return n.toFixed(d !== undefined ? d : 2); } function fmtC(n) { return '$' + n.toFixed(2); }
// --- Output --- resultDiv.style.display = 'block'; resultDiv.innerHTML = '### ⚡ Energy Savings Summary ' + '' + '' + 'Category' + 'Baseline (kWh/yr)' + 'Saved (kWh/yr)' + 'Saved ($/yr)' + '' + '🌡 HVAC / Smart Thermostat' + '' + fmt(hvacAnnualKwh,1) + '' + '' + fmt(hvacSavedKwh,1) + '' + '' + fmtC(hvacSavedCost) + '' + '💡 Smart Lighting' + '' + fmt(lightAnnualKwh,1) + '' + '' + fmt(lightSavedKwh,1) + '' + '' + fmtC(lightSavedCost) + '' + '🔌 Smart Appliances' + '' + fmt(appAnnualKwh,1) + '' + '' + fmt(appSavedKwh,1) + '' + '' + fmtC(appSavedCost) + '' + '📌 Smart Plugs / Standby' + '' + fmt(standbyAnnualKwh,1) + '' + '' + fmt(standbySavedKwh,1) + '' + '' + fmtC(standbySavedCost) + '' + 'TOTAL' + '' + fmt(totalBaselineKwh,1) + '' + '' + fmt(totalSavedKwh,1) + '' + '' + fmtC(totalSavedCost) + '' + '' +
'' +
'' + 'Overall Savings' + '' + fmt(totalSavedPct,1) + '%' + 'of baseline usage' +
'' + 'Annual Cost Saved' + '' + fmtC(totalSavedCost) + '' + 'per year' +
'' + '5-Year Savings' + '' + fmtC(saved5yr) + '' + 'cumulative' +
'' + '10-Year Savings' + '' + fmtC(saved10yr) + '' + 'cumulative' +
'' + 'CO₂ Avoided' + '' + fmt(co2SavedTons,2) + ' t' + '' + fmt(co2SavedKg,0) + ' kg/year' +
''; }
#### Formulas Used
Annual Baseline Energy (kWh/yr): E_baseline = (Watts ÷ 1000) × Hours_per_day × 365
Annual Energy Saved (kWh/yr): E_saved = E_baseline × Savings_fraction
Annual Cost Saved ($/yr): Cost_saved = E_saved × Electricity_rate
CO₂ Avoided (kg/yr): CO2_avoided = E_saved_total × 0.386 kg/kWh
Overall Savings (%): Savings_pct = (E_saved_total ÷ E_baseline_total) × 100
Standby load is assumed to run 24 hours/day since phantom loads are continuous.
#### Assumptions & References
- Smart thermostat HVAC savings of ~15% are consistent with U.S. DOE and Ecobee field studies (range: 10–23%).
- Smart lighting savings of ~40% reflect occupancy-based dimming and scheduling per ENERGY STAR guidelines.
- Smart appliance savings of ~20% reflect demand-response scheduling (off-peak operation) per ACEEE research.
- Smart plug / standby savings of ~30% are based on Lawrence Berkeley National Laboratory standby power studies.
- CO₂ emission factor of 0.386 kg CO₂/kWh is the U.S. national average from EPA eGRID 2022.
- Default electricity rate of $0.13/kWh reflects the U.S. residential average (EIA, 2023).
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