{"id":2916,"date":"2026-04-03T23:15:59","date_gmt":"2026-04-03T21:15:59","guid":{"rendered":"https:\/\/nature-o.net\/?page_id=2916"},"modified":"2026-04-03T23:17:04","modified_gmt":"2026-04-03T21:17:04","slug":"lighting-energy-savings-calculator","status":"publish","type":"page","link":"https:\/\/nature-o.net\/?page_id=2916","title":{"rendered":"Lighting Energy Savings Calculator"},"content":{"rendered":"\n<div class=\"eco-tool wp-block-group\" id=\"eco-tool-lighting-x41p9\">\n  <div class=\"eco-tool__header\">\n    <h2 class=\"eco-tool__title\">Lighting Energy Savings Calculator<\/h2>\n    <p class=\"eco-tool__lead\">\n      Compare traditional bulbs vs LED lighting and estimate how much energy, money, and CO\u2082 you can save.\n    <\/p>\n  <\/div>\n\n  <form class=\"eco-tool__form\" id=\"eco-light-form-x41p9\" novalidate>\n    <div class=\"eco-tool__grid3\">\n      <div class=\"eco-tool__field\">\n        <label class=\"eco-tool__label\" for=\"bulbs-x41p9\">Number of bulbs<\/label>\n        <input class=\"eco-tool__input\" id=\"bulbs-x41p9\" type=\"number\" min=\"1\" step=\"1\" value=\"10\" inputmode=\"numeric\" \/>\n        <div class=\"eco-tool__hint\">Total bulbs in use.<\/div>\n      <\/div>\n\n      <div class=\"eco-tool__field\">\n        <label class=\"eco-tool__label\" for=\"hours-x41p9\">Hours used per day<\/label>\n        <input class=\"eco-tool__input\" id=\"hours-x41p9\" type=\"number\" min=\"1\" step=\"1\" value=\"5\" inputmode=\"numeric\" \/>\n        <div class=\"eco-tool__hint\">Average daily lighting time.<\/div>\n      <\/div>\n\n      <div class=\"eco-tool__field\">\n        <label class=\"eco-tool__label\" for=\"type-x41p9\">Current bulb type<\/label>\n        <select class=\"eco-tool__input\" id=\"type-x41p9\">\n          <option value=\"incandescent\" selected>Incandescent<\/option>\n          <option value=\"halogen\">Halogen<\/option>\n          <option value=\"led\">LED<\/option>\n        <\/select>\n        <div class=\"eco-tool__hint\">Your current lighting.<\/div>\n      <\/div>\n\n      <div class=\"eco-tool__field\">\n        <label class=\"eco-tool__label\" for=\"target-x41p9\">Switch to<\/label>\n        <select class=\"eco-tool__input\" id=\"target-x41p9\">\n          <option value=\"led\" selected>LED<\/option>\n          <option value=\"halogen\">Halogen<\/option>\n        <\/select>\n        <div class=\"eco-tool__hint\">Recommended upgrade option.<\/div>\n      <\/div>\n\n      <div class=\"eco-tool__field\">\n        <label class=\"eco-tool__label\" for=\"price-x41p9\">Electricity price (per kWh)<\/label>\n        <input class=\"eco-tool__input\" id=\"price-x41p9\" type=\"number\" min=\"0\" step=\"0.01\" value=\"0.20\" inputmode=\"decimal\" \/>\n        <div class=\"eco-tool__hint\">Your local electricity cost.<\/div>\n      <\/div>\n\n      <div class=\"eco-tool__field\">\n        <label class=\"eco-tool__label\" for=\"co2-x41p9\">Grid CO\u2082 factor<\/label>\n        <select class=\"eco-tool__input\" id=\"co2-x41p9\">\n          <option value=\"0.10\">Low (renewable)<\/option>\n          <option value=\"0.40\" selected>Mixed<\/option>\n          <option value=\"0.80\">High (coal)<\/option>\n        <\/select>\n        <div class=\"eco-tool__hint\">Used for CO\u2082 estimate.<\/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-x41p9\">Calculate<\/button>\n      <button type=\"button\" class=\"wp-element-button eco-tool__btn eco-tool__btn--ghost\" id=\"reset-x41p9\">Reset<\/button>\n      <div class=\"eco-tool__error\" id=\"error-x41p9\"><\/div>\n    <\/div>\n  <\/form>\n\n  <div class=\"eco-tool__result\" id=\"result-x41p9\" 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\">Current usage<\/div>\n        <div class=\"eco-tool__metric-value\" id=\"current-x41p9\">\u2014<\/div>\n        <div class=\"eco-tool__metric-sub\" id=\"currentco2-x41p9\"><\/div>\n      <\/div>\n\n      <div class=\"eco-tool__card\">\n        <div class=\"eco-tool__metric-label\">After switch<\/div>\n        <div class=\"eco-tool__metric-value\" id=\"new-x41p9\">\u2014<\/div>\n        <div class=\"eco-tool__metric-sub\" id=\"saving-x41p9\"><\/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-x41p9\"><\/div>\n    <\/div>\n  <\/div>\n<\/div>\n\n<style>\n.eco-tool{border:1px solid rgba(0,0,0,.12);border-radius:12px;padding:16px;}\n.eco-tool__grid3{display:grid;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__input{height:44px;padding:0 12px;border:1px solid rgba(0,0,0,.2);border-radius:10px;}\n.eco-tool__hint{font-size:.9em;opacity:.7;min-height:38px;}\n.eco-tool__actions{display:flex;gap:10px;margin-top:16px;}\n.eco-tool__btn{padding:10px 22px}\n.eco-tool__btn--ghost{background:transparent!important;border:1px solid rgba(0,0,0,.2)!important}\n.eco-tool__btn--ghost:hover,.eco-tool__btn--ghost:focus{background:rgba(0,0,0,.06)!important;border-color:rgba(0,0,0,.35)!important}\n\n.eco-tool__cards{display:grid;gap:10px;}\n@media(min-width:860px){.eco-tool__cards{grid-template-columns:1fr 1fr;}}\n.eco-tool__card{border:1px solid rgba(0,0,0,.12);border-radius:12px;padding:12px;}\n.eco-tool__metric-value{font-size:1.6em;font-weight:800;}\n<\/style>\n\n<script>\n(function(){\nconst S=\"x41p9\";\nconst el=id=>document.getElementById(id+\"-\"+S);\n\nconst WATT={\n incandescent:60,\n halogen:40,\n led:9\n};\n\nfunction calc(){\n let bulbs=Number(el(\"bulbs\").value);\n let hours=Number(el(\"hours\").value);\n let price=Number(el(\"price\").value);\n let co2=Number(el(\"co2\").value);\n\n let currentType=el(\"type\").value;\n let newType=el(\"target\").value;\n\n if(bulbs<=0||hours<=0)return;\n\n let currentKwh=bulbs*WATT[currentType]*hours*365\/1000;\n let newKwh=bulbs*WATT[newType]*hours*365\/1000;\n\n let currentCost=currentKwh*price;\n let newCost=newKwh*price;\n\n let saved=currentCost-newCost;\n let savedCo2=(currentKwh-newKwh)*co2;\n\n el(\"current\").textContent=currentKwh.toFixed(0)+\" kWh\/year\";\n el(\"currentco2\").textContent=(currentKwh*co2).toFixed(0)+\" kg CO\u2082\";\n\n el(\"new\").textContent=newKwh.toFixed(0)+\" kWh\/year\";\n el(\"saving\").textContent=\"$\"+saved.toFixed(0)+\" + \"+savedCo2.toFixed(0)+\" kg CO\u2082 saved\";\n\n el(\"tip\").textContent=\n saved<20?\"LED still helps long-term\":\n saved<100?\"Switching bulbs can noticeably reduce energy use\":\n \"LED lighting has a strong impact on both energy and cost\";\n\n el(\"result\").hidden=false;\n}\n\nfunction reset(){\n el(\"result\").hidden=true;\n}\n\nel(\"calc\").onclick=calc;\nel(\"reset\").onclick=reset;\n})();\n<\/script>\n","protected":false},"excerpt":{"rendered":"<p>Lighting Energy Savings Calculator Compare traditional bulbs vs LED lighting and estimate how much energy, money, and CO\u2082 you can save. Number of bulbs Total bulbs in use. Hours used&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\/2916"}],"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=2916"}],"version-history":[{"count":2,"href":"https:\/\/nature-o.net\/index.php?rest_route=\/wp\/v2\/pages\/2916\/revisions"}],"predecessor-version":[{"id":2918,"href":"https:\/\/nature-o.net\/index.php?rest_route=\/wp\/v2\/pages\/2916\/revisions\/2918"}],"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=2916"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}