{"id":2897,"date":"2026-04-03T22:58:48","date_gmt":"2026-04-03T20:58:48","guid":{"rendered":"https:\/\/nature-o.net\/?page_id=2897"},"modified":"2026-04-03T23:00:08","modified_gmt":"2026-04-03T21:00:08","slug":"solar-panel-savings-calculator-2","status":"publish","type":"page","link":"https:\/\/nature-o.net\/?page_id=2897","title":{"rendered":"Solar Panel Savings Calculator"},"content":{"rendered":"\n<div class=\"eco-tool wp-block-group\" id=\"eco-tool-solar-m63x8\">\n  <div class=\"eco-tool__header\">\n    <h2 class=\"eco-tool__title\">Solar Panel Savings Calculator<\/h2>\n    <p class=\"eco-tool__lead\">\n      Estimate how much electricity, money, and CO\u2082 you could save with a home solar panel system.\n    <\/p>\n  <\/div>\n\n  <form class=\"eco-tool__form\" id=\"eco-solar-form-m63x8\" novalidate>\n    <div class=\"eco-tool__grid3\">\n      <div class=\"eco-tool__field\">\n        <label class=\"eco-tool__label\" for=\"system-m63x8\">System size<br>(kW)<\/label>\n        <input class=\"eco-tool__input\" id=\"system-m63x8\" type=\"number\" min=\"1\" step=\"0.5\" value=\"5\" inputmode=\"decimal\" \/>\n        <div class=\"eco-tool__hint\">Typical home systems often range from 3 to 8 kW.<\/div>\n      <\/div>\n\n      <div class=\"eco-tool__field\">\n        <label class=\"eco-tool__label\" for=\"sun-m63x8\">Sun hours<br>per day<\/label>\n        <input class=\"eco-tool__input\" id=\"sun-m63x8\" type=\"number\" min=\"1\" step=\"0.5\" value=\"4.5\" inputmode=\"decimal\" \/>\n        <div class=\"eco-tool__hint\">Average daily peak sun hours in your area.<\/div>\n      <\/div>\n\n      <div class=\"eco-tool__field\">\n        <label class=\"eco-tool__label\" for=\"price-m63x8\">Electricity price<br>(per kWh)<\/label>\n        <input class=\"eco-tool__input\" id=\"price-m63x8\" type=\"number\" min=\"0\" step=\"0.01\" value=\"0.20\" inputmode=\"decimal\" \/>\n        <div class=\"eco-tool__hint\">Enter your local electricity price.<\/div>\n      <\/div>\n\n      <div class=\"eco-tool__field\">\n        <label class=\"eco-tool__label\" for=\"efficiency-m63x8\">System efficiency<\/label>\n        <select class=\"eco-tool__input\" id=\"efficiency-m63x8\">\n          <option value=\"0.70\">Low<\/option>\n          <option value=\"0.80\" selected>Typical<\/option>\n          <option value=\"0.90\">High<\/option>\n        <\/select>\n        <div class=\"eco-tool__hint\">Accounts for losses from heat, inverter, and shading.<\/div>\n      <\/div>\n\n      <div class=\"eco-tool__field\">\n        <label class=\"eco-tool__label\" for=\"co2-m63x8\">Grid electricity source<\/label>\n        <select class=\"eco-tool__input\" id=\"co2-m63x8\">\n          <option value=\"0.10\">Mostly renewable<\/option>\n          <option value=\"0.40\" selected>Mixed grid<\/option>\n          <option value=\"0.80\">Coal-heavy grid<\/option>\n        <\/select>\n        <div class=\"eco-tool__hint\">Used for CO\u2082 savings estimates.<\/div>\n      <\/div>\n\n      <div class=\"eco-tool__field\">\n        <label class=\"eco-tool__label\" for=\"selfuse-m63x8\">Self-use rate (%)<\/label>\n        <input class=\"eco-tool__input\" id=\"selfuse-m63x8\" type=\"number\" min=\"0\" max=\"100\" step=\"1\" value=\"70\" inputmode=\"numeric\" \/>\n        <div class=\"eco-tool__hint\">How much solar power you use directly at home.<\/div>\n      <\/div>\n    <\/div>\n\n    <div class=\"eco-tool__actions\">\n      <button type=\"button\" class=\"wp-element-button eco-tool__btn\" id=\"calc-m63x8\">Calculate<\/button>\n      <button type=\"button\" class=\"wp-element-button eco-tool__btn eco-tool__btn--ghost\" id=\"reset-m63x8\">Reset<\/button>\n      <div class=\"eco-tool__error\" id=\"error-m63x8\" aria-live=\"polite\"><\/div>\n    <\/div>\n  <\/form>\n\n  <div class=\"eco-tool__result\" id=\"result-m63x8\" hidden>\n    <h3 class=\"eco-tool__subtitle\">Result<\/h3>\n\n    <div class=\"eco-tool__cards\">\n      <div class=\"eco-tool__card\">\n        <div class=\"eco-tool__metric-label\">Estimated solar generation<\/div>\n        <div class=\"eco-tool__metric-value\" id=\"power-m63x8\">\u2014<\/div>\n        <div class=\"eco-tool__metric-sub\" id=\"power-year-m63x8\"><\/div>\n      <\/div>\n\n      <div class=\"eco-tool__card\">\n        <div class=\"eco-tool__metric-label\">Estimated savings<\/div>\n        <div class=\"eco-tool__metric-value\" id=\"money-m63x8\">\u2014<\/div>\n        <div class=\"eco-tool__metric-sub\" id=\"co2save-m63x8\"><\/div>\n      <\/div>\n    <\/div>\n\n    <div class=\"eco-tool__card eco-tool__card--wide\">\n      <div class=\"eco-tool__metric-label\">Quick takeaway<\/div>\n      <div class=\"eco-tool__metric-sub\" id=\"tip-m63x8\"><\/div>\n    <\/div>\n  <\/div>\n\n  <details class=\"eco-tool__details\">\n    <summary class=\"eco-tool__summary\">How we calculate<\/summary>\n    <div class=\"eco-tool__details-body\">\n      <p class=\"eco-tool__text\">\n        We estimate daily solar generation using system size, sun hours, and efficiency, then convert it to monthly and yearly output.\n        Savings are based on self-used electricity replacing grid electricity.\n      <\/p>\n    <\/div>\n  <\/details>\n<\/div>\n\n<style>\n.eco-tool{border:1px solid rgba(0,0,0,.12);border-radius:12px;padding:16px;}\n.eco-tool__header{margin-bottom:12px;}\n.eco-tool__title{margin:0 0 8px;}\n.eco-tool__lead{margin:0;opacity:.9;}\n.eco-tool__form{margin-top:12px;}\n.eco-tool__grid3{display:grid;grid-template-columns:1fr;gap:16px;}\n@media (min-width:860px){.eco-tool__grid3{grid-template-columns:1fr 1fr 1fr;}}\n.eco-tool__field{display:flex;flex-direction:column;gap:6px;}\n.eco-tool__label{font-weight:600;}\n.eco-tool__input{width:100%;height:44px;padding:0 12px;border:1px solid rgba(0,0,0,.20);border-radius:10px;background:#fff;box-sizing:border-box;font:inherit;}\n.eco-tool select.eco-tool__input{\n  appearance:none;-webkit-appearance:none;line-height:44px;padding-right:40px;\n  background-image:\n    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1fr;}}\n.eco-tool__card{border:1px solid rgba(0,0,0,.12);border-radius:12px;padding:12px;}\n.eco-tool__card--wide{margin-top:10px;}\n.eco-tool__metric-label{opacity:.85;font-weight:600;}\n.eco-tool__metric-value{font-size:1.6em;font-weight:800;margin-top:6px;line-height:1.1;}\n.eco-tool__metric-sub{opacity:.85;margin-top:6px;}\n.eco-tool__details{margin-top:14px;}\n.eco-tool__summary{cursor:pointer;font-weight:700;}\n.eco-tool__details-body{margin-top:10px;}\n.eco-tool__text{margin:0 0 10px;}\n<\/style>\n\n<script>\n(function(){\n  const S = \"m63x8\";\n  const el = (id) => document.getElementById(id + \"-\" + S);\n\n  const systemEl = el(\"system\");\n  const sunEl = el(\"sun\");\n  const priceEl = el(\"price\");\n  const efficiencyEl = el(\"efficiency\");\n  const co2El = el(\"co2\");\n  const selfuseEl = el(\"selfuse\");\n\n  const calcBtn = el(\"calc\");\n  const resetBtn = el(\"reset\");\n  const errorEl = el(\"error\");\n  const resultEl = el(\"result\");\n\n  const powerEl = el(\"power\");\n  const powerYearEl = el(\"power-year\");\n  const moneyEl = el(\"money\");\n  const co2saveEl = el(\"co2save\");\n  const tipEl = el(\"tip\");\n\n  function setError(msg){ errorEl.textContent = msg || \"\"; }\n  function fmt(n){\n    return (Math.round(n * 10) \/ 10).toLocaleString(undefined,{minimumFractionDigits:1,maximumFractionDigits:1});\n  }\n\n  function calculate(){\n    setError(\"\");\n\n    const system = Number(systemEl.value);\n    const sun = Number(sunEl.value);\n    const price = Number(priceEl.value);\n    const efficiency = Number(efficiencyEl.value);\n    const gridCo2 = Number(co2El.value);\n    const selfuse = Number(selfuseEl.value);\n\n    if (!Number.isFinite(system) || system <= 0){\n      setError(\"Please enter a valid system size.\");\n      resultEl.hidden = true;\n      return;\n    }\n    if (!Number.isFinite(sun) || sun <= 0){\n      setError(\"Please enter valid sun hours.\");\n      resultEl.hidden = true;\n      return;\n    }\n    if (!Number.isFinite(price) || price < 0){\n      setError(\"Please enter a valid electricity price.\");\n      resultEl.hidden = true;\n      return;\n    }\n    if (!Number.isFinite(selfuse) || selfuse < 0 || selfuse > 100){\n      setError(\"Please enter a self-use rate from 0 to 100.\");\n      resultEl.hidden = true;\n      return;\n    }\n\n    const dailyKwh = system * sun * efficiency;\n    const monthlyKwh = dailyKwh * 30;\n    const yearlyKwh = dailyKwh * 365;\n\n    const selfUsedYearly = yearlyKwh * (selfuse \/ 100);\n    const yearlyMoneySaved = selfUsedYearly * price;\n    const yearlyCo2Saved = selfUsedYearly * gridCo2;\n\n    powerEl.textContent = `${fmt(monthlyKwh)} kWh \/ month`;\n    powerYearEl.textContent = `${fmt(yearlyKwh)} kWh \/ year`;\n    moneyEl.textContent = `${fmt(yearlyMoneySaved)} saved \/ year`;\n    co2saveEl.textContent = `${fmt(yearlyCo2Saved)} kg CO\u2082 avoided \/ year`;\n\n    if (selfuse < 40){\n      tipEl.textContent = \"Higher self-use can improve the financial value of your solar system.\";\n    } else if (yearlyMoneySaved < 500){\n      tipEl.textContent = \"Your estimated savings are moderate, but they can add up over time.\";\n    } else {\n      tipEl.textContent = \"This system could meaningfully reduce both electricity bills and CO\u2082 emissions.\";\n    }\n\n    resultEl.hidden = false;\n  }\n\n  function reset(){\n    setError(\"\");\n    systemEl.value = \"5\";\n    sunEl.value = \"4.5\";\n    priceEl.value = \"0.20\";\n    efficiencyEl.value = \"0.80\";\n    co2El.value = \"0.40\";\n    selfuseEl.value = \"70\";\n    resultEl.hidden = true;\n  }\n\n  calcBtn.addEventListener(\"click\", calculate);\n  resetBtn.addEventListener(\"click\", reset);\n})();\n<\/script>\n","protected":false},"excerpt":{"rendered":"<p>Solar Panel Savings Calculator Estimate how much electricity, money, and CO\u2082 you could save with a home solar panel system. System size(kW) Typical home systems often range from 3 to&hellip;<\/p>\n","protected":false},"author":2,"featured_media":0,"parent":2452,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_sitemap_exclude":false,"_sitemap_priority":"","_sitemap_frequency":"","footnotes":""},"_links":{"self":[{"href":"https:\/\/nature-o.net\/index.php?rest_route=\/wp\/v2\/pages\/2897"}],"collection":[{"href":"https:\/\/nature-o.net\/index.php?rest_route=\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/nature-o.net\/index.php?rest_route=\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/nature-o.net\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/nature-o.net\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=2897"}],"version-history":[{"count":2,"href":"https:\/\/nature-o.net\/index.php?rest_route=\/wp\/v2\/pages\/2897\/revisions"}],"predecessor-version":[{"id":2899,"href":"https:\/\/nature-o.net\/index.php?rest_route=\/wp\/v2\/pages\/2897\/revisions\/2899"}],"up":[{"embeddable":true,"href":"https:\/\/nature-o.net\/index.php?rest_route=\/wp\/v2\/pages\/2452"}],"wp:attachment":[{"href":"https:\/\/nature-o.net\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=2897"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}