15 engines
Battery & Backup Power
Battery versus generator on total cost, backup sized around the outage cost you are actually avoiding, and whether battery makes sense without solar.
A home battery earns money three separate ways, rate arbitrage, demand-charge reduction, and outage protection, and conflating them is the most common mistake in battery shopping. These engines price each value stream on its own before combining them, and compare a battery honestly against a standby or portable generator on total cost, not just backup capability.
For the ideas shared across every Battery & Backup Power engine, see Separating Resilience Value From Fuel Savings.
Backup Power Breakeven Electricity RateBattery Degradation Cost Over TimeBattery Demand Charge SavingsBattery Rate Arbitrage PaybackBattery Size Class Cost ComparisonBattery Value When Paired With SolarBattery Value Without SolarBattery vs. Generator Total CostBattery Warranty ValueBattery: Cash vs. FinancedGenerator Fuel Cost Over a Multi-Day OutageHome Battery Backup PaybackOutage Cost Avoided by Backup PowerResilience Budget: Battery vs. Portable GeneratorStandby Generator Backup Payback