Solar Energy Storage Equipment for Grid-Tied Residential Projects: Page 2 of 5

Iron Edison Battery Company

Founded in 2010, Iron Edison Battery Company offers nickel iron and lithium iron batteries for solar energy storage, along with solar energy system design services. Iron Edison developed its lithium iron phosphate (LiFePO4) battery line in standard battery-based solar power electronics voltage configurations of 12 Vdc, 24 Vdc and 48 Vdc nominal. These configurations make it a drop-in replacement for standard lead acid battery banks and compatible with inverters and charge controllers from manufacturers including Magnum Energy, MidNite Solar, OutBack Power, Schneider Electric and SMA America.

Iron Edison’s lithium-iron battery system includes an onboard integrated battery management system that monitors and regulates each cell in the battery bank to provide balanced charging and discharging while guarding against overcharge, overdischarge and thermal overrun situations. Internal dc disconnects provide battery protection and isolation. An indoor-rated rugged metal enclosure contains the battery system. Iron Edison offers 180 Ah–5,600 Ah battery capacities as well as custom voltages and amp-hour capacities. The company rates its lithium iron batteries at 7,000 cycles at 30% depth of discharge (DOD), 5,000 cycles at 50% DOD and 2,000 cycles at 80% DOD, and backs them with a 7-year warranty.

Iron Edison • Denver, CO • 720-432-6433 •

JLM Energy

Established in 2011, JLM Energy designs and manufactures products for energy storage, management, monitoring and control. Its UL-listed Energizr 100 and Energizr 200 grid-tied storage systems are at the center of its product offerings. Both use specific configurations of the JLM Battery Pack. Each lithium iron phosphate (LiFePO4) battery pack has a nominal voltage of 52 Vdc, a nominal capacity of 50 Ah and an operating voltage range of 40 Vdc–57.6 Vdc. JLM specifies a cycle life of 3,000 cycles at 80% depth of discharge (DOD) and discharge under 25°C, and a cycle life of 5,000 cycles at 50% DOD and discharge under 25°C. The Energizr 100 uses four battery packs configured in parallel for a nominal operating voltage of 52 Vdc and a capacity of 10.4 kWh. The higher-capacity Energizr 200 accommodates up to eight battery packs in series for a nominal voltage of 416 Vdc and a storage capacity of 20.8 kWh. JLM Energy backs its batteries with a 20-year warranty.

JLM developed the Energizr 100 primarily as a grid-independent system for backup power applications. Its design allows installers to integrate the battery system with a residence’s grid-direct PV system string inverter, electrical loads, the utility grid and even a backup ac generator. During a utility outage, the product creates a local microgrid that allows the grid-tied inverter to keep generating energy for battery charging. The more feature-rich Energizr 200 offers demand shaving, time-of-use shifting, and solar self-supply, as well as integrated support for smart thermostats, real-time whole-house power measurement and load control. JLM’s Measurz software analyzes user habits and provides efficiency recommendations for homeowners. Its Loadz controller connects appliances to a home's Wi-Fi, allowing users to control and monitor energy use.

JLM Energy • Rocklin, CA • 800.475.3960 •

LG Chem

Established in 1947, LG Chem is a diversified global chemical company that manufactures a wide range of products, including petrochemical goods, materials for electronics such as LCD displays, and rechargeable batteries. It is one of the largest lithium-ion battery manufacturers globally, with solutions for home electronics, electric vehicles and stationary energy storage systems. Headquartered in Seoul, South Korea, LG Chem has its US headquarters in Troy, Michigan. It manufactures lithium-ion cells and batteries in Korea, China and the US.

In April 2017, LG Chem announced the launch of its UL-listed RESU lithium-ion battery system for residential applications in North America. The RESU product line includes two voltage options and several capacity configurations. Its low-voltage models are available with capacities of 3.3 kWh, 6.5 kWh and 9.8 kWh. The high-voltage RESU models operate at 400 Vdc nominal and offer capacities of 7 kWh and 9.8 kWh. The 400V RESU10H (9.8kWh) product is compatible with SolarEdge’s StorEdge, a dc-coupled storage solution based on a single inverter for both PV and storage. LG Chem will make additional inverter compatibility options available later in 2017 to provide homeowners with a range of pretested solutions.

LG Chem • Troy, MI •

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