2022 is widely recognized as the year of the energy storage industry, and the residential energy storage track is also known as the golden track by the industry. The core driving force behind the rapid growth of residential energy storage comes from its ability to improve the efficiency of spontaneous electricity consumption and reduce economic costs. Under the energy crisis and policy subsidies, the high economy of residential PV storage was recognized by the market, and the demand for PV storage began to explode. At the same time, in the event of a power outage in the power grid, photovoltaic batteries can also provide emergency power supply to maintain the basic electricity demand of household.
Facing the numerous residential energy storage products on the market, how to choose has become a perplexing issue. Careless selection can lead to inadequate solutions to actual needs, increased costs, and even potential safety hazards that endanger public safety. How to choose a suitable home optical storage system for oneself?
Q1: What is residential PV energy storage system?
The residential PV energy storage system utilizes the solar power generation device on the roof to supply the electricity generated during the day to residential electrical equipment, and stores the excess electricity into the PV energy storage system for use during peak hours.
Core components
The core of a residential PV energy storage system consists of photovoltaic, battery and hybrid inverter. The combination of residential PV energy storage and residential photovoltaic forms a residential PV energy storage system, which mainly includes multiple parts such as batteries, hybrid inverter and component system, etc.
Q2: What are the components of residential PV energy storage systems?
RENAC Power’s residential single/three-phase energy storage system solutions cover the selection of power ranges from 3-10kW, providing customers with more choices and comprehensively meeting various electricity needs.
PV energy storage inverters cover single/three-phase, high/low voltage products: N1 HV, N3 HV, and N1 HL series.
The battery system can be divided into high-voltage and low-voltage batteries according to voltage: Turbo H1, Turbo H3, and Turbo L1 series.
In addition, RENAC Power also has a system that integrates hybrid inverters, lithium batteries, and controllers: the All-IN-ONE series of energy storage integrated machines.
Q3: How to choose the suitable residential storage product for me?
Step 1: Single phase or three-phase? High voltage or low voltage?
Firstly, it is necessary to understand whether the residential electricity meter corresponds to single-phase or three-phase electricity. If the meter displays 1 Phase, it represents single-phase electricity, and a single-phase hybrid inverter can be selected; If the meter displays 3 Phase, it represents three-phase electricity, and three-phase or single-phase hybrid inverters can be selected.
Compared to residential low-voltage energy storage systems, REANC’s high-voltage energy storage system has more advantages!
In terms of performance: using batteries of the same capacity, the battery current of the high-voltage optical storage system is smaller, causing less interference to the system, and the efficiency of the high-voltage optical storage system is higher;
In terms of system design, the circuit topology of the high-voltage hybrid inverter is simpler, smaller in size, lighter in weight, and more reliable.
Step 2: Is the capacity large or small?
The power size of hybrid inverters is usually determined by the power of PV modules, while the selection of batteries is highly selective.
In the self use mode, under normal circumstances, the battery capacity and inverter power are proportioned at a ratio of 2:1, which can ensure load operation and store excess energy in the battery for emergency use.
The RENAC Turbo H1 series single pack battery has a capacity of 3.74kWh and is installed in a stacked manner. The single pack volume and weight are small, easy to transport, install, and maintain. It supports 5 battery modules in series, which can expand the battery capacity to 18.7kWh.
The Turbo H3 series high-voltage lithium batteries have a single battery capacity of 7.1kWh/9.5kWh. Adopting a wall mounted or floor mounted installation method, with flexible scalability, supporting up to 6 units in parallel, and a capacity that can be expanded to 56.4kWh. Plug and play design, with automatic allocation of parallel IDs, easy to operate and expand and can save more installation time and labor costs.
The Turbo H3 series high-voltage lithium batteries use CATL LiFePO4 cells, which have significant advantages in consistency, safety, and low-temperature performance, making them a preferred choice for customers in low temperature areas.
Step 3: Beautiful or practical?
Compared to the separate type PV energy storage system, the ALL-IN-ONE machine is more aesthetically pleasing to life. The All in one series adopts a modern and minimalist style design, integrating it into the home environment and redefining the home clean energy aesthetics in the new era! The intelligent integrated compact design further simplifies installation and operation, with a plug and play design that combines aesthetics and practicality.
In addition, the RENAC residential storage system supports multiple working modes, including self use mode, force time mode, backup mode, EPS mode, etc., to achieve smart energy scheduling for households, balance the proportion of users’ self use and backup electricity, and reduce electricity bills. The self-use mode and EPS mode are the most widely used in Europe. It can also support VPP/FFR application scenarios, maximizing the value of home solar energy and batteries, and achieving energy interconnection. At the same time, it supports remote upgrade and control, with one click switching of operation mode, and can control energy flow at any time.
When choosing, users are advised to choose a professional manufacturer with comprehensive PV energy storage system solutions and the production capacity of energy storage products. Hybrid inverters and batteries under the same brand can better perform efficiently and solve the problem of system matching and consistency. They can also respond quickly in after-sales and quickly solve practical problems. Compared to purchasing inverters and batteries from different manufacturers, the actual application effect is more outstanding! Therefore, before installation, it is necessary to find a professional team to design targeted residential PV energy storage solutions.
As a leading global provider of renewable energy solutions, RENAC Power focuses on providing advanced distributed energy, energy storage systems, and smart energy management solutions for residential and commercial business. With more than ten years of industry experience, innovation and strength, RENAC Power has become the preferred brand for energy storage systems in more and more households.