Calculadora de Dimensionamiento de Almacenamiento Gratis
Dimensiona sistemas de baterías para maximizar el autoconsumo de energía solar generada.
Required Battery Capacity
83.3 kWh
Required Battery Capacity vs Daily Energy Usage
Fórmula
Sizing Battery Storage for Solar
Battery storage bridges the gap between solar generation and energy use, especially overnight or during cloudy days.
Formula
Required Capacity = (Daily Usage x Autonomy Days) / DoD / Round-Trip Efficiency
Depth of Discharge (DoD) is the fraction of the battery you can actually use without damaging it. Lithium-ion batteries typically allow 80-90% DoD, while lead-acid batteries are limited to 50%.
Ejemplo Resuelto
A home uses 30 kWh/day and wants 2 days of autonomy with 80% DoD and 90% efficiency.
- 01Energy needed = 30 x 2 = 60 kWh
- 02Account for efficiency = 60 / 0.90 = 66.7 kWh usable
- 03Account for DoD = 66.7 / 0.80 = 83.3 kWh total capacity
Preguntas Frecuentes
What is depth of discharge?
DoD is the percentage of battery capacity you can use. A 10 kWh battery with 80% DoD provides 8 kWh of usable energy. Deeper discharge shortens battery life.
How many days of autonomy do I need?
For grid-tied systems, 1 day is common for backup. Off-grid systems typically need 2-3 days to cover cloudy periods.
Lithium vs lead-acid batteries?
Lithium-ion batteries offer 80-90% DoD, 90-95% efficiency, and 10+ year life. Lead-acid has 50% DoD, 80% efficiency, and 3-5 year life but costs less upfront.