{"id":43378,"date":"2026-09-12T15:58:09","date_gmt":"2026-09-12T13:58:09","guid":{"rendered":"https:\/\/fvcomponentes.com\/calculadora-placas-solares\/"},"modified":"2026-09-12T16:23:38","modified_gmt":"2026-09-12T14:23:38","slug":"calculadora-de-paineis-solares","status":"publish","type":"page","link":"https:\/\/fvcomponentes.com\/pt\/calculadora-placas-solares\/","title":{"rendered":"Calculadora de pain\u00e9is solares: quantos pain\u00e9is precisas para a tua casa"},"content":{"rendered":"<style>\n.fvt{max-width:980px;margin:0 auto;font-size:16px}\n.fvt .card{background:#fff;border:1px solid #E3E9EF;border-radius:16px;padding:22px;margin:0 0 22px;box-shadow:0 1px 3px rgba(10,76,122,.06)}\n.fvt h2{color:#0A4C7A;font-size:22px;margin:0 0 14px;padding-bottom:8px;position:relative}\n.fvt h2::after{content:\"\";position:absolute;left:0;bottom:0;width:46px;height:3px;background:#EF6B16}\n.fvt .grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:14px}\n.fvt label{display:block;font-size:13px;color:#4B5563;margin-bottom:4px;font-weight:600}\n.fvt input,.fvt select{width:100%;padding:10px 12px;border:1px solid #D1D5DB;border-radius:10px;font-size:15px;background:#fff}\n.fvt .btn{display:inline-block;background:#EF6B16;color:#fff;border:0;padding:12px 24px;border-radius:12px;font-weight:600;cursor:pointer;margin-top:16px;font-size:16px}\n.fvt .res{background:#F5F8FB;border-radius:12px;padding:18px;margin-top:18px;display:none}\n.fvt .res.on{display:block}\n.fvt .big{font-size:30px;font-weight:800;color:#0A4C7A}\n.fvt .ok{color:#15803D;font-weight:600}.fvt .ko{color:#B91C1C;font-weight:600}.fvt .warn{color:#B45309;font-weight:600}\n.fvt table{width:100%;border-collapse:collapse;margin-top:10px;font-size:14px}\n.fvt th{background:#0A4C7A;color:#fff;text-align:left;padding:8px}.fvt td{padding:8px;border-bottom:1px solid #EEF2F6}\n.fvt small{color:#6B7280}\n.fvt .cta{margin-top:24px;background:#0A4C7A;color:#fff;border-radius:16px;padding:22px;text-align:center}\n.fvt .cta a{display:inline-block;margin:8px 6px 0;background:#EF6B16;color:#fff;padding:10px 20px;border-radius:12px;text-decoration:none;font-weight:600}\n<\/style><div class=\"fvt\">\n<div class=\"card\"><p>Estima-se que a <strong>pot\u00eancia fotovoltaica e o n\u00famero de pain\u00e9is<\/strong> o que a tua habita\u00e7\u00e3o necessita com base no consumo anual, na regi\u00e3o de Espanha, na orienta\u00e7\u00e3o do telhado e na percentagem de consumo que pretendes cobrir. Obter\u00e1s o valor em kWp, o n\u00famero de pain\u00e9is, a superf\u00edcie aproximada, a produ\u00e7\u00e3o anual e um inversor indicativo.<\/p><\/div>\n<div class=\"card\"><h2>Dados relativos \u00e0 habita\u00e7\u00e3o<\/h2><div class=\"grid\">\n<div><label>Consumo anual (kWh) <small>est\u00e1 na fatura<\/small><\/label><input id=\"p_kwh\" type=\"number\" value=\"4500\"><\/div>\n<div><label>Zona<\/label><select id=\"p_zona\"><option value=\"1650\">M\u00farcia, Andaluzia, Alicante, Ilhas Can\u00e1rias<\/option><option value=\"1550\">Val\u00eancia, Ilhas Baleares, Extremadura, Castela-La Mancha<\/option><option value=\"1500\">Madrid, Arag\u00e3o, Catalunha<\/option><option value=\"1400\">Castela e Le\u00e3o, Navarra, La Rioja<\/option><option value=\"1250\">Galiza, Ast\u00farias, Cant\u00e1bria, Pa\u00eds Basco<\/option><\/select><\/div>\n<div><label>Orienta\u00e7\u00e3o<\/label><select id=\"p_or\"><option value=\"1\">Sul<\/option><option value=\"0.95\">Sudeste \/ Sudoeste<\/option><option value=\"0.85\">Este \/ Oeste<\/option><option value=\"0.9\">Este + Oeste (das duas \u00e1guas)<\/option><\/select><\/div>\n<div><label>Inclina\u00e7\u00e3o<\/label><select id=\"p_inc\"><option value=\"1\">30-35\u00b0 (ideal)<\/option><option value=\"0.97\">15-25\u00b0 (telha comum)<\/option><option value=\"0.9\">Plana 0-10\u00b0<\/option><option value=\"0.93\">45-60\u00b0<\/option><\/select><\/div>\n<div><label>Sombras<\/label><select id=\"p_sh\"><option value=\"1\">Sem sombras<\/option><option value=\"0.92\">Ligeiras (chamin\u00e9, antena)<\/option><option value=\"0.8\">Partes importantes do dia<\/option><\/select><\/div>\n<div><label>Consumo a cobrir com energia solar (%)<\/label><select id=\"p_cov\"><option value=\"70\">70 % (normal, sem bateria)<\/option><option value=\"100\" selected>100 % do consumo anual (com excedentes)<\/option><option value=\"130\">130 % (com bateria ou carro el\u00e9trico)<\/option><\/select><\/div>\n<div><label>Pot\u00eancia do painel (W)<\/label><input id=\"p_w\" type=\"number\" value=\"450\"><\/div>\n<div><label>Funciona a pilhas?<\/label><select id=\"p_bat\"><option value=\"0\">N\u00e3o<\/option><option value=\"1\">Sim<\/option><\/select><\/div>\n<\/div><button class=\"btn\" onclick=\"calcPV()\">Calcular<\/button>\n<div class=\"res\" id=\"p_res\"><\/div><\/div>\n<div class=\"card\"><h2>Como se calcula<\/h2>\n<p>Parte-se da <strong>produ\u00e7\u00e3o espec\u00edfica<\/strong> da sua zona (kWh anuais por cada kWp instalado, de acordo com o PVGIS), corrigida em fun\u00e7\u00e3o da orienta\u00e7\u00e3o, inclina\u00e7\u00e3o e sombras. A pot\u00eancia necess\u00e1ria \u00e9 o consumo anual multiplicado pela percentagem a cobrir e dividido por essa produ\u00e7\u00e3o espec\u00edfica. O n\u00famero de pain\u00e9is \u00e9 arredondado por excesso e o inversor \u00e9 dimensionado com um r\u00e1cio CC\/CA de 1,2, habitual no autoconsumo.<\/p>\n<h2>Dicas<\/h2>\n<ul><li>Sem bateria, o autoconsumo direto situa-se entre os 30 e os 50 %: o restante \u00e9 compensado como excedente a um pre\u00e7o inferior. Por isso, n\u00e3o compensa sobredimensionar demasiado se n\u00e3o se pretender instalar uma bateria.<\/li>\n<li>Com a bateria, cobrir 100-130 % do consumo permite carregar a bateria durante o dia e atingir 80-90 % de autoconsumo.<\/li>\n<li>Telhado orientada de leste para oeste: a produ\u00e7\u00e3o total \u00e9 10 % inferior, mas a curva \u00e9 mais plana e melhora o autoconsumo direto.<\/li>\n<li>Se tiveres ou fores adquirir um carro el\u00e9trico ou um sistema de aerotermia, acrescenta o consumo previsto desses equipamentos ao consumo anual.<\/li><\/ul>\n<p>Continua com: <a href=\"https:\/\/fvcomponentes.com\/pt\/calculadora-de-paineis-em-serie-e-em-paralelo\/\">configura\u00e7\u00e3o de strings e valida\u00e7\u00e3o do MPPT<\/a>, <a href=\"https:\/\/fvcomponentes.com\/pt\/quanto-custa-a-instalacao-de-paineis-solares\/\">quanto custa instalar pain\u00e9is solares<\/a> y <a href=\"https:\/\/fvcomponentes.com\/pt\/faq-perguntas-e-respostas-frequentes\/\">perguntas frequentes<\/a>.<\/p><\/div>\n<div class=\"cta\"><strong>Tem d\u00favidas quanto ao resultado?<\/strong><br>O nosso apoio t\u00e9cnico \u00e9 gratuito para os clientes.<br><a href=\"https:\/\/fvcomponentes.com\/pt\/categoria-produto\/paineis-solares\/\">Pain\u00e9is solares<\/a><a href=\"https:\/\/fvcomponentes.com\/pt\/categoria-produto\/kits-solares\/\">Kits solares<\/a><a href=\"https:\/\/fvcomponentes.com\/pt\/solicitar-orcamento\/\">Solicitar aconselhamento<\/a><\/div>\n<\/div>\n<script>\nfunction calcPV(){\n const kwh=+p_kwh.value, y=+p_zona.value*+p_or.value*+p_inc.value*+p_sh.value, cov=+p_cov.value\/100, W=+p_w.value, bat=p_bat.value==='1';\n if(!(kwh>0)){p_res.innerHTML='Introduce el consumo anual.';p_res.classList.add('on');return;}\n const kwp=kwh*cov\/y; const n=Math.ceil(kwp*1000\/W); const kwpR=n*W\/1000; const prod=kwpR*y; const area=n*2.1;\n const invkw=Math.max(3,Math.round(kwpR\/1.2*10)\/10);\n const invs= kwpR<=6? (bat?'Fronius Primo GEN24 '+Math.min(6,Math.ceil(invkw))+'.0 Plus o Victron MultiPlus-II 48\/5000 + MPPT':'Fronius Primo '+Math.min(8.2,Math.ceil(invkw))+'.0') : (bat?'Fronius Symo GEN24 '+Math.min(10,Math.ceil(invkw))+'.0 Plus (trif\u00e1sico) o sistema Victron':'Fronius Symo '+Math.ceil(invkw)+'.0 (trif\u00e1sico)');\n const self= bat? Math.min(prod,kwh*0.85): Math.min(prod*0.45,kwh*0.6);\n const bkwh= bat? (kwh\/365*0.45*1.15).toFixed(1):null;\n p_res.innerHTML=`<div class=\"big\">${n} paneles de ${W} W \u00b7 ${kwpR.toFixed(2)} kWp<\/div>\n <p>Producci\u00f3n anual estimada: <strong>${Math.round(prod)} kWh<\/strong> (\u2248 ${Math.round(y)} kWh por kWp en tu zona y orientaci\u00f3n). Superficie necesaria: \u2248 <strong>${Math.round(area)} m\u00b2<\/strong>.<\/p>\n <p>Autoconsumo directo estimado: <strong>${Math.round(self)} kWh\/a\u00f1o<\/strong> (${Math.round(self\/kwh*100)} % de tu consumo)${bat?'':'; el resto de la producci\u00f3n se vierte a red y se compensa en factura'}.<\/p>\n <p>Inversor orientativo: <strong>${invs}<\/strong>${bat?`. Bater\u00eda orientativa: <strong>${bkwh} kWh \u00fatiles<\/strong> (calc\u00falala en detalle con la <a href=\"https:\/\/fvcomponentes.com\/calculadora-baterias-solares\/\">calculadora de bater\u00edas<\/a>)`:''}.<\/p>\n <p><small>Estimaci\u00f3n con datos medios de radiaci\u00f3n (PVGIS) y una p\u00e9rdida global del sistema del 14 %. Para un dimensionado con tu curva horaria y tejado real, abre un ticket en Gesti\u00f3n Comercial con tus facturas.<\/small><\/p>`;\n p_res.classList.add('on');\n}\n<\/script>","protected":false},"excerpt":{"rendered":"<p>Estima la potencia fotovoltaica y el n\u00famero de paneles que necesita tu vivienda a partir del consumo anual, la zona de Espa\u00f1a, la orientaci\u00f3n del tejado y el porcentaje de consumo que quieres cubrir. Obtendr\u00e1s kWp, n\u00famero de paneles, superficie aproximada, producci\u00f3n anual y un inversor orientativo. Datos de la vivienda Consumo anual (kWh) lo [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"class_list":["post-43378","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/fvcomponentes.com\/pt\/wp-json\/wp\/v2\/pages\/43378","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/fvcomponentes.com\/pt\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/fvcomponentes.com\/pt\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/fvcomponentes.com\/pt\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/fvcomponentes.com\/pt\/wp-json\/wp\/v2\/comments?post=43378"}],"version-history":[{"count":1,"href":"https:\/\/fvcomponentes.com\/pt\/wp-json\/wp\/v2\/pages\/43378\/revisions"}],"predecessor-version":[{"id":43388,"href":"https:\/\/fvcomponentes.com\/pt\/wp-json\/wp\/v2\/pages\/43378\/revisions\/43388"}],"wp:attachment":[{"href":"https:\/\/fvcomponentes.com\/pt\/wp-json\/wp\/v2\/media?parent=43378"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}