https://freeoffgridcalculator.com/blog/ Educational guides, chemistry comparisons, and engineering insights for DIY and off-grid solar and battery storage systems worldwide. Nothing for sale. en Sun, 07 Sep 2026 00:00:00 GMT https://freeoffgridcalculator.com/blog/escape-load-shedding/ https://freeoffgridcalculator.com/blog/escape-load-shedding/ Sun, 07 Sep 2026 00:00:00 GMT Essential-load sizing, backup size table, and staged path from small backup to bill-cut to off-grid. Free estimate. https://freeoffgridcalculator.com/blog/solar-vs-generator-cost/ https://freeoffgridcalculator.com/blog/solar-vs-generator-cost/ Sun, 07 Sep 2026 00:00:00 GMT Generator vs solar running cost at $1-2/L fuel versus solar+battery LCOE, with Lagos and Beirut examples. Free tool. https://freeoffgridcalculator.com/blog/off-grid-battery-bank-sizing/ https://freeoffgridcalculator.com/blog/off-grid-battery-bank-sizing/ Sun, 07 Sep 2026 00:00:00 GMT Usable vs nominal, series vs parallel, voltage choice, and 48V bank ranges for 10 kWh per day. Free simulation. https://freeoffgridcalculator.com/blog/what-size-solar-system-for-off-grid/ https://freeoffgridcalculator.com/blog/what-size-solar-system-for-off-grid/ Sun, 07 Sep 2026 00:00:00 GMT Reliability tiers, latitude yield bands, and PV plus battery ranges for 10 kWh per day. Free simulation. https://freeoffgridcalculator.com/blog/time-of-use-tariffs-battery/ https://freeoffgridcalculator.com/blog/time-of-use-tariffs-battery/ Sun, 07 Sep 2026 00:00:00 GMT Peak vs off-peak arbitrage math, 2 kWh shifting example, and battery sizing table. Free tool. https://freeoffgridcalculator.com/blog/is-a-home-battery-worth-it/ https://freeoffgridcalculator.com/blog/is-a-home-battery-worth-it/ Sun, 07 Sep 2026 00:00:00 GMT Honest 2026 math on LFP, sodium-ion and lead-acid lifetime cost, with Honolulu vs Germany examples. Free simulation. https://freeoffgridcalculator.com/blog/how-to-cut-electricity-bill-with-solar/ https://freeoffgridcalculator.com/blog/how-to-cut-electricity-bill-with-solar/ Sun, 30 Aug 2026 00:00:00 GMT How much of your bill solar and battery can actually erase - worked step by step for Honolulu, Lagos, and Germany from five years of satellite weather. Free calculator included. https://freeoffgridcalculator.com/blog/off-grid-vs-grid-tie-payback/ https://freeoffgridcalculator.com/blog/off-grid-vs-grid-tie-payback/ Sat, 23 Aug 2026 00:00:00 GMT Real payback numbers for Hawaii, Nigeria, and Germany - worked step by step from five years of satellite weather. When independence wins, when bill-cutting wins, and what the hardware truly costs. https://freeoffgridcalculator.com/blog/diy-vs-prebuilt-sodium-ion-lifepo4-battery-storage/ https://freeoffgridcalculator.com/blog/diy-vs-prebuilt-sodium-ion-lifepo4-battery-storage/ Wed, 20 Aug 2026 00:00:00 GMT Compare DIY battery storage options for LiFePO4 and sodium-ion. Learn cost, safety, and modularity benefits of building your own off-grid or backup system.