sunalivhttps://sunaliv.com/sunaliv is an independent magazine about the solar home: rooftop solar, battery storage, smart home energy, heat pumps, EV charging, sustainable architecture and energy efficiency, with calculators that run in your browser.enHow much electricity does a rooftop solar system really produce?https://sunaliv.com/solar/rooftop-solar-yield-explained/https://sunaliv.com/solar/rooftop-solar-yield-explained/Mon, 19 Oct 2026 08:00:00 +0200SolarWhat a rooftop solar system really produces: specific yield by region, the effect of orientation, shade and heat, and how to check an offer.Solar panels compared: TOPCon, heterojunction, back-contact and glass-glasshttps://sunaliv.com/solar/solar-panel-types-compared/https://sunaliv.com/solar/solar-panel-types-compared/Mon, 19 Oct 2026 08:00:00 +0200SolarTOPCon, heterojunction, back-contact and glass-glass modules compared: efficiency, heat behaviour, looks, warranties and which roof suits which panel.Home battery sizing: how many kilowatt hours do you actually need?https://sunaliv.com/battery-storage/home-battery-sizing-guide/https://sunaliv.com/battery-storage/home-battery-sizing-guide/Mon, 19 Oct 2026 08:00:00 +0200Battery StorageHow to size a home battery: rules of thumb, usable versus nominal capacity, power ratings, winter and summer behaviour, backup power and economics.LFP, NMC and sodium-ion: home battery chemistry explainedhttps://sunaliv.com/battery-storage/home-battery-chemistry-lfp-nmc-sodium-ion/https://sunaliv.com/battery-storage/home-battery-chemistry-lfp-nmc-sodium-ion/Mon, 19 Oct 2026 08:00:00 +0200Battery StorageLithium iron phosphate, NMC and sodium-ion home batteries compared: safety, cycle life, efficiency, temperature behaviour and the standards to look for.Home energy management: letting the house decide when to use powerhttps://sunaliv.com/smart-home/home-energy-management-system/https://sunaliv.com/smart-home/home-energy-management-system/Mon, 19 Oct 2026 08:00:00 +0200Smart HomeWhat a home energy management system does, which interfaces matter (SG Ready, EEBus, Modbus, Matter), ยง14a EnWG and how to choose a system that stays local.Dynamic electricity tariffs: how a smart home profits from cheap hourshttps://sunaliv.com/smart-home/dynamic-electricity-tariffs-smart-home/https://sunaliv.com/smart-home/dynamic-electricity-tariffs-smart-home/Mon, 19 Oct 2026 08:00:00 +0200Smart HomeHow dynamic electricity tariffs work, why prices drop at sunny middays and windy nights, who benefits, the risks, and what you need to use them.Air-to-water or ground-source: which heat pump suits your home?https://sunaliv.com/heat-pumps/air-water-vs-ground-source-heat-pump/https://sunaliv.com/heat-pumps/air-water-vs-ground-source-heat-pump/Mon, 19 Oct 2026 08:00:00 +0200Heat PumpsAir-to-water and ground-source heat pumps compared: efficiency, boreholes and collectors, cost, noise, space, permits and which home suits which system.Heat pumps in older homes: flow temperature is the number that decideshttps://sunaliv.com/heat-pumps/heat-pumps-older-homes-flow-temperature/https://sunaliv.com/heat-pumps/heat-pumps-older-homes-flow-temperature/Mon, 19 Oct 2026 08:00:00 +0200Heat PumpsHeat pumps in older and period homes: why flow temperature decides efficiency, a simple test with your existing boiler, radiators, hydronic balancing and high temperature units.Wallbox basics: 11 kW, 22 kW and what your car can actually takehttps://sunaliv.com/ev-charging/wallbox-11-kw-22-kw-explained/https://sunaliv.com/ev-charging/wallbox-11-kw-22-kw-explained/Mon, 19 Oct 2026 08:00:00 +0200EV ChargingWallbox power levels explained: 3.7, 7.4, 11 and 22 kW, the car's onboard charger, charging times, DC fault protection, permits and load management.Charging on sunshine: solar surplus charging and bidirectional carshttps://sunaliv.com/ev-charging/solar-surplus-ev-charging-bidirectional/https://sunaliv.com/ev-charging/solar-surplus-ev-charging-bidirectional/Mon, 19 Oct 2026 08:00:00 +0200EV ChargingSolar surplus charging explained: minimum charging power, phase switching, how much range a roof delivers, and the state of bidirectional charging, V2H and V2G.Passive house principles for luxury homes: comfort first, energy secondhttps://sunaliv.com/sustainable-architecture/passive-house-principles-luxury-homes/https://sunaliv.com/sustainable-architecture/passive-house-principles-luxury-homes/Mon, 19 Oct 2026 08:00:00 +0200Sustainable ArchitecturePassive house principles applied to luxury homes: heating demand, airtightness, triple glazing, ventilation, overheating, pools and when certification makes sense.Building-integrated photovoltaics: when the facade becomes the power planthttps://sunaliv.com/sustainable-architecture/building-integrated-photovoltaics-facade/https://sunaliv.com/sustainable-architecture/building-integrated-photovoltaics-facade/Mon, 19 Oct 2026 08:00:00 +0200Sustainable ArchitectureBuilding-integrated photovoltaics explained: facade and roof integration, yield of vertical surfaces, coloured modules, approvals and when BIPV makes sense.Where a house loses heat: the efficiency checklist before you buy hardwarehttps://sunaliv.com/energy-efficiency/house-heat-loss-efficiency-checklist/https://sunaliv.com/energy-efficiency/house-heat-loss-efficiency-checklist/Mon, 19 Oct 2026 08:00:00 +0200Energy EfficiencyWhere houses lose heat and what to fix first: roof, walls, windows, airtightness, heating system tuning, thermal imaging and blower door tests.Ventilation with heat recovery: fresh air without losing the warmthhttps://sunaliv.com/energy-efficiency/mechanical-ventilation-heat-recovery/https://sunaliv.com/energy-efficiency/mechanical-ventilation-heat-recovery/Mon, 19 Oct 2026 08:00:00 +0200Energy EfficiencyMechanical ventilation with heat recovery (MVHR) explained: how it works, efficiency, filters, noise, central versus decentral systems and maintenance.