What Are the Benefits of Storing Solar Energy?
Storing this surplus energy is essential to getting the most out of any solar panel system, and can result in cost-savings, more efficient energy grids, and decreased fossil fuel emissions. Storing solar energy has a few main benefits:
1.Balancing electric loads. If electricity isn’t stored, it has to be used at the moment it’s generated. Energy storage solar system allows surplus generation to be banked for peak-use. As far as renewable energy is concerned, storing surplus power allows the lights to stay on when the sun goes down or the wind stops blowing. Simply put, energy storage solar system allows an energy reservoir to be charged when generation is high and demand is low, then released when generation diminishes and demand grows.
2.Filling in the gaps. Short-term solar energy storage system allows for consistent energy flow during brief disruptions in generators, such as passing clouds or routine maintenance.
3.Energy resilience. The energy grid is vulnerable to disruptions and outages due to anything from wildfires to severe weather. Solar energy storage creates a protective bubble during disruptive events by decentralizing where we get our energy from.
How to Store Solar Energy: FAQ
1.What’s the cheapest solar battery?
Lead-acid batteries are currently the cheapest option for solar energy storage, but they’re short-lived and not as efficient as other options. Lithium-ion batteries offer the best value in terms of cost, performance, lifespan, and availability.
2.How long can solar energy be stored?
Theoretically, solar energy stored mechanically can last as long as potential energy is maintained. There’s always energy lost in any energy transfer, and in the case of mechanical storage, leaks always occur during storage and release. The same applies to batteries. Generally, a standard solar battery will hold a charge for 1-5 days.
3.How long do solar batteries last?
Standard solar batteries last 15-30 years, depending on type.
4.How many solar batteries do I need?
Storage capacity varies dramatically based on your specific needs and takes into account factors like your desired storage capacity, backup load, and backup duration.
Is solar power worth it for me? Yes. Solar energy became cheaper than coal in 2019, reaching an average of $.068 per kilowatt-hour (compared to an average of $.13 for U.S. residential power that same year, which is predominantly fossil-powered). Economic benefits aside, solar energy reduces carbon emissions and boosts resiliency.
