[{"data":1,"prerenderedAt":178},["ShallowReactive",2],{"example-balcony-solar-en":3,"faq-balcony-solar-en":78,"sources-balcony-solar-en":109,"location-compare-52.52,13.405":123},{"input":4,"output":14},{"location":5,"systemWp":6,"tiltDeg":7,"azimuthDeg":8,"plugType":9,"annualConsumptionKwh":10,"householdType":11,"electricityPriceCtPerKwh":12,"systemCostEur":13},"52.52,13.405",890,90,0,"schuko",3000,"family",31.1,500,{"annualKwh":15,"monthlyKwh":16,"clippingLossKwh":8,"clippingLossPercent":8,"selfUsedKwh":29,"selfUsePercent":30,"exportedUnpaidKwh":31,"savingsEurPerYear":32,"paybackYears":33,"bestTiltDeg":34,"penaltyVsBestTiltPercent":35,"winterSharePercent":36,"compliance":37,"horizonApplied":52,"calibrationFactorAnnual":53,"steps":54,"warnings":70},648.9916187960986,[17,18,19,20,21,22,23,24,25,26,27,28],26.27535939129756,46.6020500043822,65.01374332972993,72.67824008297943,64.5174592558305,60.99444232380694,58.78475689399319,66.66346185876365,70.52218351097069,55.67764597896879,33.65795058335389,27.604325582024583,542.4933976525077,83.59020085018221,106.49822114359145,168.71544666992992,2.963569784918305,45,26.79299846197134,15.482747706989091,[38,42,45,47,50],{"id":39,"status":40,"limit":41,"value":41},"inverterLimit","ok",800,{"id":43,"status":40,"limit":44,"value":6},"plugPower",960,{"id":46,"status":40},"battery",{"id":48,"status":49},"registration","action",{"id":51,"status":40},"capExemption",true,0.9150863680615111,[55,60,63,66],{"label":56,"expression":57,"value":15,"unit":58,"provenance":59},"tmyEnergySimulation","Σ_8760h P_STC · G_eff\u002F1000 · η_rel(Huld) · η_sys @ tilt 90°","kWh","measured",{"label":61,"expression":62,"value":15,"unit":58,"provenance":59},"inverterClipping","min(P_h, 800 W) je Stunde",{"label":64,"expression":65,"value":29,"unit":58,"provenance":59},"hourlyDispatch","8760h: min(P_pv, P_last), Profil \"family\", 3000 kWh",{"label":67,"expression":68,"value":33,"unit":69,"provenance":59},"balconyPayback","500 € \u002F (542 kWh · 31.1 ct)","a",[71],{"level":72,"code":73,"params":74,"anchors":76},"info","BALCONY_EXPORT_UNPAID",{"exportKwh":75},106,[77],"annualConsumptionKwh",[79,82,85,88,91,94,97,100,103,106],{"q":80,"a":81},"What is allowed for balcony solar in Germany in 2026?","Per household: an inverter up to 800 W AC output and up to 2,000 Wp of module power. On a regular Schuko socket, the 960 Wp limit of DIN VDE V 0126-95 additionally applies since December 2025 — more module power requires a dedicated connector (e.g. Wieland). Registration is now only in the Marktstammdatenregister (within 1 month of commissioning); the separate grid-operator notification is gone. The calculator checks all of this as a traffic-light panel before computing.",{"q":83,"a":84},"How much does a vertical balcony system really deliver?","In Berlin the vertical south facade delivers about 730 kWh per kWp per year — computed from PVGIS hourly data, not estimated. Two 445 Wp modules (890 Wp) reach about 650 kWh. Tilting to 45° would add a computed third or so (+37%, still +32% at 60°); in return the vertical surface performs relatively better in winter, catching the low sun.",{"q":86,"a":87},"Why do balcony systems pay off so fast?","Because their power is small compared with the household base load: almost all generation is used directly and valued at the full electricity price — 82% computed self-consumption in the reference case (890 Wp, 3,000 kWh household). At 31.1 ct\u002FkWh and €500 system cost that is about €166 saved per year and roughly a 3-year payback. The rest is exported unpaid — the calculator states this openly.",{"q":89,"a":90},"How does the calculator know my self-consumption rate?","It does not assume it, it computes it: for all 8,760 hours of the year, generation is matched against a disclosed household profile of your type (working, home office, retired, family, shift) — the same HTW-validated model as in the self-consumption calculator. A retired household uses noticeably more directly than a commuter household.",{"q":92,"a":93},"Does the 800 W inverter limit my yield?","Hardly, for typical setups: 890 Wp vertical on the railing practically never reaches the 800 W limit (loss below 0.5%). The limit only bites with large module power at shallow tilt — 2,000 Wp at 35° lose a computed 330 kWh, about 16%, in the Berlin reference year. The calculator quantifies the hourly curtailed energy for your configuration.",{"q":95,"a":96},"What does a balcony system deliver in winter?","Little, but not nothing: in the Berlin reference case (890 Wp vertical south) December through February deliver about 100 kWh together — roughly 15% of the annual yield, averaging 0.9 kWh per day in December versus 1.9 in July. Vertical railing mounting is the most winter-friendly geometry: it catches the low winter sun best and snow cannot settle — a 15% winter share at 90° versus 11% at 35° tilt. All computed hourly from the TMY data of your location.",{"q":98,"a":99},"My balcony faces east or west — is it still worth it?","Yes, with a computed discount: vertical on a Berlin railing, the east side delivers about 25% and the west side about 31% less than south (486 and 450 instead of 650 kWh at 890 Wp). Savings drop less than yield, because morning and evening generation match the household profile better — on the west side a computed 97% is used directly. The calculator computes your orientation hourly instead of applying a flat formula.",{"q":101,"a":102},"A 2,000 Wp balcony system — what is allowed, what do you get?","Allowed: 2,000 Wp of module power is the ceiling for plug-in solar devices; above 960 Wp, DIN VDE V 0126-95 requires a dedicated connector instead of Schuko, and the inverter stays at 800 W. Yield: 2,000 Wp at 35° tilt deliver a computed 1,678 kWh per year in Berlin — 4.6 kWh per day on average — of which the 800 W limit clips 330 kWh (16%). In a 3,000 kWh household only 56% is self-consumed; 747 kWh are exported unpaid. Going big pays off mainly with high consumption — or a battery.",{"q":104,"a":105},"What changes with a battery?","Legally this relaxed in 2026: VDE-AR-N 4105:2026-03 brings AC-coupled batteries on balcony systems into the simplified procedure — laypersons may register them, and the combined 800 W limit at the grid connection still applies. The product standard DIN VDE V 0126-95 does not yet cover devices with storage, which is why the calculator flags this as a notice in the panel. Economically a battery usually stays secondary: in the reference case 82% is used directly anyway — only about 117 kWh of annual surplus could be shifted. It becomes interesting with large module power, such as the 747 kWh export of a 2,000 Wp system.",{"q":107,"a":108},"Does this calculator work outside Germany, Austria and Switzerland?","The yield part covers the DACH region: the hourly grid has 1,155 points at 0.25°, cross-validated against PVGIS. The rules panel reflects German law only (800 W, 960 Wp Schuko, 2,000 Wp, Marktstammdatenregister) — other countries have their own plug-in solar rules. For yields elsewhere, PVGIS by the European Commission (worldwide except polar regions) or NREL PVWatts for the United States are the best official tools; a US grid built on NSRDB hourly data is in preparation.",[110,115,120],{"name":111,"url":112,"retrievedAt":113,"version":114},"JRC Photovoltaic Geographical Information System (PVGIS), European Commission — endpoints tmy, MRcalc, printhorizon","https:\u002F\u002Fre.jrc.ec.europa.eu\u002Fpvg_tools\u002F","2026-07-30","PVGIS API v5_3, solar radiation database PVGIS-SARAH3",{"name":116,"url":117,"retrievedAt":118,"version":119},"Bundesnetzagentur SMARD electricity price analysis, StromAuskunft price index (as of 2026-08-06) and EEG remuneration rates per § 48 EEG 2023","https:\u002F\u002Fwww.smard.de","2026-08-06","Q3\u002F2026 (EEG-Sätze H2\u002F2026)",{"name":121,"url":-1,"retrievedAt":122,"version":-1},"Official publications of the standards bodies and state authorities (NFPA, IEC, DKE\u002FVDE, CEN)","2026-07-15",[124,131,137,144,150,155,161,167,173],{"name":125,"slug":126,"distanceKm":127,"annualPsh":128,"p90KwhM2":129,"bestTiltDeg":130},"Berlin","de-berlin",1,3.5831189617880312,1207.886,40,{"name":132,"slug":133,"distanceKm":134,"annualPsh":135,"p90KwhM2":136,"bestTiltDeg":130},"Oranienburg","de-oranienburg",19,3.503000720980533,1193.894,{"name":138,"slug":139,"distanceKm":140,"annualPsh":141,"p90KwhM2":142,"bestTiltDeg":143},"Blankenfelde-Mahlow","de-blankenfelde-mahlow",20,3.5798803172314346,1197.9479999999999,35,{"name":145,"slug":146,"distanceKm":147,"annualPsh":148,"p90KwhM2":149,"bestTiltDeg":130},"Potsdam","de-potsdam",22,3.5934405191059837,1215.032,{"name":151,"slug":152,"distanceKm":147,"annualPsh":153,"p90KwhM2":154,"bestTiltDeg":143},"Bernau","de-bernau",3.520992069214132,1209.374,{"name":156,"slug":157,"distanceKm":158,"annualPsh":159,"p90KwhM2":160,"bestTiltDeg":130},"Ludwigsfelde","de-ludwigsfelde",26,3.642096611391492,1218.8539999999998,{"name":162,"slug":163,"distanceKm":164,"annualPsh":165,"p90KwhM2":166,"bestTiltDeg":130},"Königs Wusterhausen","de-koenigs-wusterhausen",29,3.569196827685653,1203.042,{"name":168,"slug":169,"distanceKm":170,"annualPsh":171,"p90KwhM2":172,"bestTiltDeg":130},"Strausberg","de-strausberg",33,3.62602451333814,1231.65,{"name":174,"slug":175,"distanceKm":34,"annualPsh":176,"p90KwhM2":177,"bestTiltDeg":130},"Eberswalde","de-eberswalde",3.5717015140591206,1227.4499999999998,1786101754912]