These systems allow the storage of energy that would otherwise be cut off by zero injection systems, as well as supporting periods of lower generation with the accumulated surplus or buying from the grid when it is more economical.
The battery status and usage can be monitored remotely from the FusionSolar smartphone app, allowing you to know its status and performance at all times through an intuitive and accessible 3D virtual design.
“With these batteries, we offer the C&I sector a significant increase in the self-sufficiency of self-consumption installations. This means that photovoltaic surpluses that would otherwise be lost are diverted to the battery for later use. The benefits are tangible: while a project without batteries pays for itself in 2-3 years, one with batteries can pay for itself in about 5 or 6, but with greater independence from market price fluctuations and increased use of renewable energy throughout that period,” says José Manuel Lopez Flores, Sales & Marketing Director Southwest Europe at Wattkraft.
The modular design developed by Huawei for these batteries maximizes their effective usage time throughout their lifespan of over 15 years. The distribution of loads across small 100kW inverter/charger modules allows for individual replacement or repair of each module without compromising the rest of the system. Huawei also features a patented integrated optimizer system that eliminates potential cell mismatches, thus optimizing energy utilization.
For maximum safety, the modules are made of lithium iron phosphate (LFP), a material that withstands temperatures up to 500°C and does not release oxygen when heated, making the battery particularly resistant to thermal runaway or fire. Each module incorporates an advanced algorithm capable of proactively detecting potential short circuits through artificial intelligence and data analysis. Furthermore, all modules include Huawei's patented internal fire suppression system, which uses an inerting gas to control a potential incident early on.
In addition, the batteries have sensors for temperature, humidity, smoke, carbon monoxide and air conditioning cooling, which increases their lifespan compared to other systems by up to 50%.
These batteries also incorporate features such as peak shaving or peak leveling, which allows for a reduction in the contracted power from the electrical grid in some cases.
“The operation is very simple: if a company has a contracted power of 300kW, but only reaches that peak on rare occasions, with the installation of the batteries it can reduce its contracted power, with the consequent cost savings, and use the battery to supply the remaining power. Furthermore, since it is possible to charge the battery directly from the grid when energy is cheaper, savings are also achieved that would not have been possible otherwise,” explains Jesús Heras, Technical Director Southwest Europe at Wattkraft.
“Another example of the use of modular batteries is as backup power in places where the electrical grid simply does not have the necessary capacity to carry out an activity. This is currently happening at some gas stations that are trying to install charging points for electric vehicles. In these cases, the batteries also provide the missing energy to reach the required power,” adds Heras.
New products also for the residential and large-scale plant sectors.
In addition to these units up to 200kWh, designed for the commercial and industrial project segment, Wattkraft distributes the largest modular batteries developed by Huawei, designed for large-scale or utility-scale projects. These batteries, ranging from 1 to 2 MWh, are sold in 20-foot containers and incorporate all the advantages of the C&I sector equipment. The only difference is that the inverter/chargers up to 200kW each have an 800Vac output instead of 400Vac to better integrate with Huawei's higher-power string inverters (Huawei SUN2000 185KTL-H1, 215KTL-H0/H3, and 330KTL-H1 series).
In addition, Huawei recently introduced other new products, including the new SUN2000-8/10K-LC0 single-phase residential inverters with a higher maximum power output (up to 10kW, previously limited to 6kW), and the SUN2000-12/15/17/20/25K-MB0 inverters, which offer even greater power and are equipped for DC-coupled battery management. Both models are notable for their efficiency and safety, as they are protected against electrical arcs thanks to AI-powered detection mechanisms. Furthermore, they are capable of generating up to 30% more energy through optimizers.
The new LUNA2000-21-S1 battery range will soon be available and represents a significant advancement in modular battery design for residential use. Among other features, these batteries can be combined with the new SUN2000-12/15/17/20/25K-MB0 inverters, allowing up to two battery stacks to be connected to each of the inverter's two inputs. This means that a single inverter can support up to four battery stacks.
