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Después de varios años dedicados a la energía eólica, hoy en día me dedico a la consultoría y a escribir sobre la energía fotovoltaica.","2019-12-10T12:14:56.000000Z","2019-12-10T12:28:57.000000Z",{"x1":606,"x2":607,"webpX1":608,"webpX2":609},"https:\u002F\u002Fapi.solarplus.es\u002Ffiles\u002Fauthors\u002F1.jpg","https:\u002F\u002Fapi.solarplus.es\u002Ffiles\u002Fauthors\u002F1@2x.jpg","https:\u002F\u002Fapi.solarplus.es\u002Ffiles\u002Fauthors\u002F1.webp","https:\u002F\u002Fapi.solarplus.es\u002Ffiles\u002Fauthors\u002F1@2x.webp",{"nodes":611,"issues":1090,"unsupportedTags":1091,"tagCounts":1092,"hasCalculator":589,"hasFilloutEmbed":589},[612],{"type":613,"tag":614,"attrs":615,"children":616},"element","div",{},[617,624,626,633,635,640,641,654,655,661,662,667,668,680,681,687,688,693,694,699,700,829,830,835,836,842,843,866,867,872,873,974,975,980,981,987,988,993,994,1007,1008,1021,1022,1028,1029,1036,1041,1042,1048,1053,1054,1060,1079,1080,1089],{"type":613,"tag":618,"attrs":619,"children":620},"p",{},[621],{"type":622,"value":623},"text","Una batería solar puede reducir las compras de electricidad, pero eso no basta para demostrar que sea rentable. Hay que comparar dos situaciones con las mismas placas y el mismo consumo: autoconsumo sin batería y autoconsumo con batería. Solo el ahorro adicional corresponde al almacenamiento.",{"type":622,"value":625},"\n\n",{"type":613,"tag":627,"attrs":628,"children":630},"h2",{"id":629},"comparacion-correcta",[631],{"type":622,"value":632},"Calcula la inversión que añade la batería",{"type":622,"value":634},"\n",{"type":613,"tag":618,"attrs":636,"children":637},{},[638],{"type":622,"value":639},"Pide presupuestos comparables. El coste adicional puede incluir batería, diferencia de inversor, protecciones, instalación, configuración y documentación. Si añades respaldo, identifica su coste y su utilidad por separado.",{"type":622,"value":634},{"type":613,"tag":618,"attrs":642,"children":643},{},[644,646,652],{"type":622,"value":645},"No atribuyas a la batería el ahorro del consumo solar directo que ya conseguirías sin ella. Para estudiar el conjunto, consulta si ",{"type":613,"tag":647,"attrs":648,"children":649},"nuxt-link",{"to":37},[650],{"type":622,"value":651},"las placas solares son rentables",{"type":622,"value":653},"; para elegir almacenamiento, compara cuánto mejora realmente ese resultado.",{"type":622,"value":625},{"type":613,"tag":627,"attrs":656,"children":658},{"id":657},"energia-y-excedentes",[659],{"type":622,"value":660},"La energía almacenada tiene un coste de oportunidad",{"type":622,"value":634},{"type":613,"tag":618,"attrs":663,"children":664},{},[665],{"type":622,"value":666},"Un excedente guardado deja de exportarse. Si habría generado compensación, renuncias a ese importe. Además, no toda la energía que entra en la batería llega después a los consumos: utiliza el rendimiento del recorrido completo.",{"type":622,"value":634},{"type":613,"tag":618,"attrs":669,"children":670},{},[671,673,678],{"type":622,"value":672},"Reúne un año de consumo y producción horarios. Una vivienda puede tener excedente abundante en verano y necesitar electricidad en invierno, sin posibilidad de trasladarla entre estaciones con una batería doméstica. El ",{"type":613,"tag":647,"attrs":674,"children":675},{"to":199},[676],{"type":622,"value":677},"dimensionado de la capacidad",{"type":622,"value":679}," debe respetar también potencia, reserva y consumo nocturno.",{"type":622,"value":625},{"type":613,"tag":627,"attrs":682,"children":684},{"id":683},"ejemplo-ahorro",[685],{"type":622,"value":686},"Ejemplo reproducible de ahorro adicional",{"type":622,"value":634},{"type":613,"tag":618,"attrs":689,"children":690},{},[691],{"type":622,"value":692},"Suponemos 250 operaciones anuales que entregan 6 kWh cada una, rendimiento de ida y vuelta del 90 %, compra evitada a 0,25 €\u002FkWh y excedente valorado a 0,05 €\u002FkWh. Todos los excedentes desplazados habrían sido compensados íntegramente y el límite mensual no cambia el resultado. Son hipótesis, no tarifas actuales ni una previsión de ciclos garantizada.",{"type":622,"value":634},{"type":613,"tag":618,"attrs":695,"children":696},{},[697],{"type":622,"value":698},"Los importes de esta tabla se expresan antes de impuestos. El precio de compra representa el coste variable evitable, incluidos sus peajes y cargos; los impuestos se calcularían al comparar las facturas completas.",{"type":622,"value":634},{"type":613,"tag":701,"attrs":702,"children":703},"table",{"class":701},[704,728],{"type":613,"tag":705,"attrs":706,"children":707},"thead",{},[708],{"type":613,"tag":709,"attrs":710,"children":711},"tr",{},[712,718,723],{"type":613,"tag":713,"attrs":714,"children":715},"th",{},[716],{"type":622,"value":717},"Concepto anual",{"type":613,"tag":713,"attrs":719,"children":720},{},[721],{"type":622,"value":722},"Cálculo",{"type":613,"tag":713,"attrs":724,"children":725},{},[726],{"type":622,"value":727},"Resultado",{"type":613,"tag":729,"attrs":730,"children":731},"tbody",{},[732,733,752,753,771,772,790,791,809,810,828],{"type":622,"value":634},{"type":613,"tag":709,"attrs":734,"children":735},{},[736,742,747],{"type":613,"tag":737,"attrs":738,"children":739},"td",{},[740],{"type":622,"value":741},"Energía entregada",{"type":613,"tag":737,"attrs":743,"children":744},{},[745],{"type":622,"value":746},"250 × 6",{"type":613,"tag":737,"attrs":748,"children":749},{},[750],{"type":622,"value":751},"1.500 kWh",{"type":622,"value":634},{"type":613,"tag":709,"attrs":754,"children":755},{},[756,761,766],{"type":613,"tag":737,"attrs":757,"children":758},{},[759],{"type":622,"value":760},"Excedente necesario para cargar",{"type":613,"tag":737,"attrs":762,"children":763},{},[764],{"type":622,"value":765},"1.500 ÷ 0,90",{"type":613,"tag":737,"attrs":767,"children":768},{},[769],{"type":622,"value":770},"1.666,67 kWh",{"type":622,"value":634},{"type":613,"tag":709,"attrs":773,"children":774},{},[775,780,785],{"type":613,"tag":737,"attrs":776,"children":777},{},[778],{"type":622,"value":779},"Compras evitadas",{"type":613,"tag":737,"attrs":781,"children":782},{},[783],{"type":622,"value":784},"1.500 × 0,25",{"type":613,"tag":737,"attrs":786,"children":787},{},[788],{"type":622,"value":789},"375 €",{"type":622,"value":634},{"type":613,"tag":709,"attrs":792,"children":793},{},[794,799,804],{"type":613,"tag":737,"attrs":795,"children":796},{},[797],{"type":622,"value":798},"Compensación perdida",{"type":613,"tag":737,"attrs":800,"children":801},{},[802],{"type":622,"value":803},"(1.500 ÷ 0,90) × 0,05",{"type":613,"tag":737,"attrs":805,"children":806},{},[807],{"type":622,"value":808},"83,33 €",{"type":622,"value":634},{"type":613,"tag":709,"attrs":811,"children":812},{},[813,818,823],{"type":613,"tag":737,"attrs":814,"children":815},{},[816],{"type":622,"value":817},"Ahorro energético adicional",{"type":613,"tag":737,"attrs":819,"children":820},{},[821],{"type":622,"value":822},"375 − (1.500 ÷ 0,90 × 0,05)",{"type":613,"tag":737,"attrs":824,"children":825},{},[826],{"type":622,"value":827},"291,67 €",{"type":622,"value":634},{"type":622,"value":634},{"type":613,"tag":618,"attrs":831,"children":832},{},[833],{"type":622,"value":834},"Este importe aún no descuenta servicios, consumos auxiliares no incluidos en el rendimiento, mantenimiento ni inversión. Con menos energía desplazada o una compensación más alta, el ahorro baja. Por ejemplo, a 0,10 €\u002FkWh de excedente, manteniendo las demás hipótesis, sería 208,33 € anuales.",{"type":622,"value":625},{"type":613,"tag":627,"attrs":837,"children":839},{"id":838},"limite-mensual",[840],{"type":622,"value":841},"Por qué importa el límite de compensación",{"type":622,"value":634},{"type":613,"tag":618,"attrs":844,"children":845},{},[846,848,857,859,864],{"type":622,"value":847},"El ",{"type":613,"tag":849,"attrs":850,"children":854},"a",{"href":851,"target":852,"rel":853},"https:\u002F\u002Fwww.boe.es\u002Feli\u002Fes\u002Frd\u002F2019\u002F04\u002F05\u002F244\u002Fcon","_blank","noopener noreferrer",[855],{"type":622,"value":856},"artículo 14 del Real Decreto 244\u002F2019",{"type":622,"value":858}," limita la compensación al valor de la energía comprada que resulte compensable. El periodo empleado no puede superar un mes. La ",{"type":613,"tag":647,"attrs":860,"children":861},{"to":205},[862],{"type":622,"value":863},"compensación simplificada",{"type":622,"value":865}," no concede automáticamente un saldo para meses posteriores.",{"type":622,"value":634},{"type":613,"tag":618,"attrs":868,"children":869},{},[870],{"type":622,"value":871},"Hay que recalcular el límite en ambos escenarios: almacenar también reduce las compras que fijan ese techo. Ejemplo independiente, exclusivamente del término energético compensable:",{"type":622,"value":634},{"type":613,"tag":701,"attrs":874,"children":875},{"class":701},[876,897],{"type":613,"tag":705,"attrs":877,"children":878},{},[879],{"type":613,"tag":709,"attrs":880,"children":881},{},[882,887,892],{"type":613,"tag":713,"attrs":883,"children":884},{},[885],{"type":622,"value":886},"Concepto del mes",{"type":613,"tag":713,"attrs":888,"children":889},{},[890],{"type":622,"value":891},"Solo placas",{"type":613,"tag":713,"attrs":893,"children":894},{},[895],{"type":622,"value":896},"Placas y batería",{"type":613,"tag":729,"attrs":898,"children":899},{},[900,901,919,920,938,939,955,956,973],{"type":622,"value":634},{"type":613,"tag":709,"attrs":902,"children":903},{},[904,909,914],{"type":613,"tag":737,"attrs":905,"children":906},{},[907],{"type":622,"value":908},"Valor de compras compensable",{"type":613,"tag":737,"attrs":910,"children":911},{},[912],{"type":622,"value":913},"30 €",{"type":613,"tag":737,"attrs":915,"children":916},{},[917],{"type":622,"value":918},"20 €",{"type":622,"value":634},{"type":613,"tag":709,"attrs":921,"children":922},{},[923,928,933],{"type":613,"tag":737,"attrs":924,"children":925},{},[926],{"type":622,"value":927},"Valor de excedentes",{"type":613,"tag":737,"attrs":929,"children":930},{},[931],{"type":622,"value":932},"40 €",{"type":613,"tag":737,"attrs":934,"children":935},{},[936],{"type":622,"value":937},"35 €",{"type":622,"value":634},{"type":613,"tag":709,"attrs":940,"children":941},{},[942,947,951],{"type":613,"tag":737,"attrs":943,"children":944},{},[945],{"type":622,"value":946},"Compensación aplicada: el menor importe",{"type":613,"tag":737,"attrs":948,"children":949},{},[950],{"type":622,"value":913},{"type":613,"tag":737,"attrs":952,"children":953},{},[954],{"type":622,"value":918},{"type":622,"value":634},{"type":613,"tag":709,"attrs":957,"children":958},{},[959,964,969],{"type":613,"tag":737,"attrs":960,"children":961},{},[962],{"type":622,"value":963},"Saldo del término compensable",{"type":613,"tag":737,"attrs":965,"children":966},{},[967],{"type":622,"value":968},"0 €",{"type":613,"tag":737,"attrs":970,"children":971},{},[972],{"type":622,"value":968},{"type":622,"value":634},{"type":622,"value":634},{"type":613,"tag":618,"attrs":976,"children":977},{},[978],{"type":622,"value":979},"Aunque se compren menos kWh, ese término no baja de cero. Otros componentes variables pueden cambiar y deben calcularse aparte. No consideres gratuito todo excedente que antes superaba el límite. Una batería virtual comercial requiere además revisar cuotas y reglas de saldo del contrato.",{"type":622,"value":625},{"type":613,"tag":627,"attrs":982,"children":984},{"id":983},"amortizacion-y-ayudas",[985],{"type":622,"value":986},"Evalúa la vida útil y las ayudas con prudencia",{"type":622,"value":634},{"type":613,"tag":618,"attrs":989,"children":990},{},[991],{"type":622,"value":992},"Dividir inversión adicional entre ahorro neto anual ofrece un plazo simple solo si este es positivo. No refleja degradación, financiación, cambios de tarifa ni sustituciones. Pide flujos anuales y compara escenarios con menos ciclos, menor capacidad y una reparación o reemplazo.",{"type":622,"value":634},{"type":613,"tag":618,"attrs":995,"children":996},{},[997,999,1005],{"type":622,"value":998},"La ",{"type":613,"tag":849,"attrs":1000,"children":1002},{"href":1001,"target":852,"rel":853},"https:\u002F\u002Fenergylibrary.tesla.com\u002Fdocs\u002FPublic\u002FEnergyStorage\u002FPowerwall\u002FGeneral\u002FWarranty\u002Fen-emea\u002FPowerwall-Warranty-EN.pdf",[1003],{"type":622,"value":1004},"garantía europea de Powerwall",{"type":622,"value":1006}," ilustra que la capacidad retenida y los límites dependen del uso. Revisa el documento del equipo ofertado: años de garantía y años de amortización describen cosas distintas.",{"type":622,"value":634},{"type":613,"tag":618,"attrs":1009,"children":1010},{},[1011,1013,1019],{"type":622,"value":1012},"Calcula primero sin ayudas. Añade una subvención o ventaja fiscal únicamente cuando hayas comprobado convocatoria, elegibilidad, compatibilidad, documentación y fecha de cobro. Solicitarla no equivale a tenerla concedida. La ",{"type":613,"tag":849,"attrs":1014,"children":1016},{"href":1015,"target":852,"rel":853},"https:\u002F\u002Fwww.cnmc.es\u002Ffacil-para-ti\u002Fque-hace-la-cnmc-para-consumidores\u002Fcomercializacion-y-suministro-electrico",[1017],{"type":622,"value":1018},"CNMC recomienda revisar también servicios y actualizaciones de precio",{"type":622,"value":1020}," al comparar suministros.",{"type":622,"value":625},{"type":613,"tag":627,"attrs":1023,"children":1025},{"id":1024},"preguntas-frecuentes",[1026],{"type":622,"value":1027},"Preguntas frecuentes",{"type":622,"value":634},{"type":613,"tag":1030,"attrs":1031,"children":1033},"h3",{"id":1032},"mas-autoconsumo",[1034],{"type":622,"value":1035},"¿Más autoconsumo siempre significa más rentabilidad?",{"type":613,"tag":618,"attrs":1037,"children":1038},{},[1039],{"type":622,"value":1040},"No. Una batería grande puede aumentar el autoconsumo y recuperar mal su coste si apenas utiliza la capacidad adicional.",{"type":622,"value":634},{"type":613,"tag":1030,"attrs":1043,"children":1045},{"id":1044},"ahorro-respaldo",[1046],{"type":622,"value":1047},"¿Cómo valoro la protección frente a apagones?",{"type":613,"tag":618,"attrs":1049,"children":1050},{},[1051],{"type":622,"value":1052},"Por separado: confirma qué circuitos sostiene, durante cuánto tiempo y qué reserva necesita. La autonomía puede tener valor personal aunque no mejore la amortización.",{"type":622,"value":634},{"type":613,"tag":1030,"attrs":1055,"children":1057},{"id":1056},"sin-fotovoltaica",[1058],{"type":622,"value":1059},"¿Y si todavía no tengo placas?",{"type":613,"tag":618,"attrs":1061,"children":1062},{},[1063,1065,1070,1072,1077],{"type":622,"value":1064},"Consulta el cálculo de ",{"type":613,"tag":647,"attrs":1066,"children":1067},{"to":220},[1068],{"type":622,"value":1069},"baterías sin placas solares",{"type":622,"value":1071},". Compara después las opciones de ",{"type":613,"tag":647,"attrs":1073,"children":1074},{"to":49},[1075],{"type":622,"value":1076},"almacenamiento doméstico",{"type":622,"value":1078}," con tus datos reales.",{"type":622,"value":634},{"type":613,"tag":618,"attrs":1081,"children":1082},{},[1083],{"type":613,"tag":1084,"attrs":1085,"children":1086},"small",{},[1087],{"type":622,"value":1088},"Revisado el 7 de septiembre de 2026. Los ejemplos no representan precios de mercado ni garantizan ahorro o amortización.",{"type":622,"value":634},[],[],{"div":584,"p":1093,"h2":1094,"nuxt-link":597,"table":1095,"thead":1095,"tr":1096,"th":1094,"tbody":1095,"td":1097,"a":1098,"h3":1098,"small":584},18,6,2,11,27,3,[1100,1109,1118,1127],{"id":1101,"name":219,"slug":1102,"uri":220,"shortDescription":1103,"readingTime":597,"image":1104},120,"baterias-sin-placas-solares","El cálculo de almacenamiento sin fotovoltaica: coste de carga, compras evitadas, rendimiento, desgaste y valor separado del respaldo.",{"x1":1105,"x2":1106,"webpX1":1107,"webpX2":1108},"https:\u002F\u002Fapi.solarplus.es\u002Ffiles\u002Fpages_featured\u002F120.jpg","https:\u002F\u002Fapi.solarplus.es\u002Ffiles\u002Fpages_featured\u002F120@2x.jpg","https:\u002F\u002Fapi.solarplus.es\u002Ffiles\u002Fpages_featured\u002F120.webp","https:\u002F\u002Fapi.solarplus.es\u002Ffiles\u002Fpages_featured\u002F120@2x.webp",{"id":1110,"name":204,"slug":1111,"uri":205,"shortDescription":1112,"readingTime":597,"image":1113},113,"compensacion-excedentes","Cómo funciona la compensación simplificada, qué ocurre al superar el límite y qué comprobar en el contrato y la primera factura.",{"x1":1114,"x2":1115,"webpX1":1116,"webpX2":1117},"https:\u002F\u002Fapi.solarplus.es\u002Ffiles\u002Fpages_featured\u002F113.jpg","https:\u002F\u002Fapi.solarplus.es\u002Ffiles\u002Fpages_featured\u002F113@2x.jpg","https:\u002F\u002Fapi.solarplus.es\u002Ffiles\u002Fpages_featured\u002F113.webp","https:\u002F\u002Fapi.solarplus.es\u002Ffiles\u002Fpages_featured\u002F113@2x.webp",{"id":1119,"name":198,"slug":1120,"uri":199,"shortDescription":1121,"readingTime":1094,"image":1122},111,"como-calcular-capacidad-bateria-solar","Una forma de comparar tamaños de batería con datos horarios, ejemplos de capacidad útil y comprobaciones de carga, descarga y rentabilidad.",{"x1":1123,"x2":1124,"webpX1":1125,"webpX2":1126},"https:\u002F\u002Fapi.solarplus.es\u002Ffiles\u002Fpages_featured\u002F111.jpg","https:\u002F\u002Fapi.solarplus.es\u002Ffiles\u002Fpages_featured\u002F111@2x.jpg","https:\u002F\u002Fapi.solarplus.es\u002Ffiles\u002Fpages_featured\u002F111.webp","https:\u002F\u002Fapi.solarplus.es\u002Ffiles\u002Fpages_featured\u002F111@2x.webp",{"id":1128,"name":48,"slug":1129,"uri":49,"shortDescription":1130,"readingTime":597,"image":1131},47,"baterias","Cómo elegir una batería solar en España: capacidad útil, potencia, compatibilidad, respaldo y presupuesto completo, con las condiciones de garantía a la vista.",{"x1":1132,"x2":1133,"webpX1":1134,"webpX2":1135},"https:\u002F\u002Fapi.solarplus.es\u002Ffiles\u002Fpages_featured\u002F47.jpg","https:\u002F\u002Fapi.solarplus.es\u002Ffiles\u002Fpages_featured\u002F47@2x.jpg","https:\u002F\u002Fapi.solarplus.es\u002Ffiles\u002Fpages_featured\u002F47.webp","https:\u002F\u002Fapi.solarplus.es\u002Ffiles\u002Fpages_featured\u002F47@2x.webp"]