Should you choose a central or string inverter for energy storage?

As markets and technologies for inverters grow, so does the importance of choosing between central and string inverters for energy storage projects. Typically, central inverters have been the standard for commercial and utility-scale energy storage applications.

Why are inverters important for energy storage projects?

Inverters also serve as the brains of an energy storage project, managing, optimizing and driving project performance and financial returns. The difference between central and string inverters, while simple, has profound implications for long-term project design, performance and safety.

Why do we need a battery inverter?

As the energy storage market becomes more competitive, so do demands for innovative, cost-effective inverter technologies. One response is to turn to off-the-shelf components, such as placing batteries in smaller enclosures along with associated air-conditioning and fire-protection systems.

Do you have to grapple with code for energy storage systems?

2023 NEC Updates for Energy Storage Systems Whether you are an industry veteran or a DIYer out over your skis, you'll have to grapple with code if you want to install an energy storage system (ESS). More specifically, you’ll have to grapple (metaphorically, of course) with your local inspector.

What is the final rule on electric storage resources?

The final rule applies to electric storage resources, which the Commission defined as any “resource capable of receiving electric energy from the grid and storing it for later injection of electric energy back to the grid.”

Can a solar inverter create a microgrid?

Grid-forming capability. Inverters for solar PV are unidirectional, but string inverters designed for energy storage are bi-directional and some (such as those from LS Energy Solutions) have grid forming ability. This opens up the opportunity to create a microgrid.