Energy Storage & Battery Back-up
Solar energy, while abundant and clean, is inherently intermittent—dependent on daylight and weather conditions. To maximize the benefits of solar power, energy storage and battery backup systems are essential. They store excess energy generated during peak sunlight hours and supply power when solar generation is low or unavailable.
Why Energy Storage is Crucial for Solar Power ?
- Intermittency of Solar Energy: Solar panels produce electricity only when the sun is shining. Energy storage smooths out fluctuations and provides power after sunset or during cloudy days.
- Energy Independence: Stored solar energy enables homeowners and businesses to reduce reliance on the grid and avoid costly peak-time electricity rates.
- Backup Power: Batteries provide uninterrupted power during outages, enhancing the reliability of solar installations.
- Grid Services: Stored energy can be fed back into the grid to stabilize voltage and frequency, enabling better integration of renewable energy.
Types of Batteries Used in Solar Systems :
Lithium-Ion Batteries
- Most common in residential and commercial solar storage.
- High energy density, longer lifespan (up to 10-15 years).
- Examples: Tesla Powerwall, LG Chem RESU.
Lead-Acid Batteries
- Traditional, lower upfront cost.
- Shorter lifespan and lower efficiency.
- Mostly used in off-grid solar systems.
Flow Batteries
- Suitable for large-scale solar farms requiring long-duration storage.
- Scalable and durable but currently more expensive.
