FAQ

Based on product design integration:
Inverter
Energy Storage Battery
BMS
EMS
Monitoring Module
Electrical Protection
EPS / Backup Output

Compared to traditional split systems, All-in-One systems are generally simpler to install, have a cleaner appearance, and reduce wiring between devices.

Advantages of All-in-One systems include:
Simple installation
Clean appearance
Small footprint
High system compatibility
Relatively convenient setup
More unified after-sales interface

Yes.
Most home solar systems are grid-connected or hybrid systems.

Under normal circumstances:

Solar energy is prioritized for home use.

If solar energy is insufficient:

Solar energy and the grid work together to supply power.

If there is surplus solar energy:

It can be used to charge batteries, or, depending on local policies, fed into the grid to earn the subsidy difference.

Yes.

If you are: a photovoltaic installer, an investment engineering company, or a wholesaler who wants to become our partner, please contact us for B2B pricing.

We recommend providing: Product model, quantity, city and region, and expected purchase frequency.

This will help us provide a more accurate quote.

Because the price of a system depends not only on its power output.

It also depends on:
PV module brand,
Inverter brand,
Battery capacity,
Installation included,
Hanging system type,
Electrical protection equipment,
Shipping costs,
Taxes, and
After-sales service.

Therefore, the value of the entire system cannot be determined solely by its power output.

To help recommend a more suitable system, we recommend providing:

City
Annual electricity consumption
Monthly electricity cost
Single-phase or three-phase
Roof area
Roof orientation
Are there any obstructions?
Do you need batteries?
Do you need backup power during power outages?
Do you own an electric vehicle?
Do you have a heat pump?
Estimated budget

If convenient, you can also provide photos of your roof.

Deye inverters and Hypra micro-inverters support monitoring and some function control via an app and web platform.

Through the app, you can view:

Real-time PV power
Daily power generation
Cumulative power generation
Battery SOC
Charging power
Discharging power
Grid input
Grid output
Household load
Historical power generation data

Specific functions depend on the device model.

BMS stands for:
Battery Management System
It monitors:

Battery voltage
Current
Temperature
State of Charge (SOC)
Charging
Discharging

and provides:
Overvoltage protection
Undervoltage protection
Overcurrent protection
Temperature protection

LiFePO4, or lithium iron phosphate battery, is very common in home energy storage systems.

It typically features:

Long cycle life

Good thermal stability

Suitable for home energy storage

Supports a high number of cycles

The specific number of cycles depends on the product model and usage conditions.

In many cases, yes.

This design is called:

DC Oversizing

For example:

5kW inverter + 6kWp PV module.

The reason is that the solar module does not operate at its nominal maximum power all day.

Appropriate oversizing can improve:

Morning power generation

Afternoon power generation

Cloudy day power generation

Annual inverter utilization rate

However, the maximum oversizing ratio must comply with the inverter manufacturer's technical specifications.

Solar panels are generally designed for a lifespan of approximately 25-30 years. Under normal installation, maintenance, and usage conditions, many solar panels can still generate electricity after 30 years, although their power generation efficiency will gradually decrease over time. Manufacturers typically provide a power warranty of around 25-30 years.

Is higher power rating for solar panels always better? Can solar panels of different brands and power ratings be used together?

Not necessarily.

High-power modules can reduce the number of modules needed for the same system power, but the following factors must be considered:
Module size
Roof area
Weight
Voltage
Current
Inverter compatibility
Installation structure
For example, a 500W module may not be suitable for all residential rooftops.

It is not recommended to mix solar panels of different power ratings and brands indiscriminately.
Different modules may have different:

Vmp
Voc
Imp
Isc

If the parameters within the same string differ significantly, it may affect the overall power generation efficiency.
If mixing is absolutely necessary, calculations should be performed by a professional based on the MPPT and string design.

Firstly, it's because of the different power ranges. Secondly, inverters are divided into single-phase and three-phase inverters. The three-phase versions are further differentiated into those that can connect to high-voltage batteries and those that can connect to 48V low-voltage batteries, while the single-phase versions can only connect to low-voltage batteries.

When selecting a battery for matching, you must confirm:

Battery voltage range

CAN / RS485 communication

BMS compatibility

Maximum charge/discharge current

Deye inverters support multiple units connected in parallel, for example... Two 10kW inverters connected in parallel can achieve a 20kW output power. Generally, 6-8 inverters can be connected in parallel; the specific number supported depends on the model's specifications.

When choosing a suitable hybrid inverter, consider:

1. Selecting a single-phase or three-phase voltage version based on your household load.

2. Choosing an output power appropriate for your household load.

3. Selecting a suitable low-voltage battery or high-voltage battery pack based on your household load.

If your load is high at night, with high-power appliances and an electric vehicle charging station, a three-phase inverter with a high-voltage battery pack is recommended. If your load is low at night, a low-voltage battery is sufficient for basic appliances like refrigerators, TVs, computers, and air conditioners.

Energy storage batteries can primarily:

Store excess solar energy during the day
Use solar energy at night
Increase solar energy self-consumption rate
Reduce electricity purchases from the grid
Utilize peak and off-peak electricity pricing in some areas
Provide backup power during power outages
Enhance home energy independence

There is no single answer.

It usually depends on:

Calculating based on monthly electricity bills, annual household electricity consumption, average daily electricity consumption, daytime and nighttime electricity usage ratio, available roof area, and whether there are plans to add electrical equipment in the future.

How to calculate how many solar panels are needed?

You can use:

System power ÷ Power per module = Number of modules

For example:

Target system: 6kW

Modules: 450W

Calculation:

6000 ÷ 450 ≈ 13.3

Typically, about 14 450W solar modules can be configured, which is about 6.3kWp.

The final number also depends on:

Inverter MPPT voltage range, maximum input voltage, maximum input current, roof area, and module Voc.

Electricity generation depends on several factors:

Total power of photovoltaic modules
Installation direction
Installation angle
Local sunshine
Season
Temperature
Shading
System losses

For example, a 2000W photovoltaic system does not necessarily generate 2000Wh of electricity per day.
If the local average effective sunshine duration is 4 hours, then the theoretical electricity generation is approximately:
2kW × 4h = 8kWh

Actual electricity generation is also affected by inverter efficiency, temperature, shading, and weather. 

Balcony solar panels can still generate electricity on cloudy days, but the output will decrease.

Solar panels utilize both direct sunlight and diffused light, so they can still generate electricity on cloudy days.

However, generally:

Sunny days > Partly cloudy days > Overcast days > Rainy days

The specific power generation depends on the weather and system installation conditions.

Suitable for:

Users living in apartments or residential buildings
Families without a separate roof
Renters looking to reduce electricity bills
Users wanting to try solar energy at a low cost
Users with a continuous daytime electricity load
Users who prefer simple installation and a small system

For example, appliances frequently used during the day:

Refrigerator
Router
Computer
TV
Air conditioner
Washing machine
Hot water heater
Small appliances

Electricity generated by the balcony photovoltaic system can be prioritized for consumption by these appliances.

We not only sell individual solar panels, inverters, and batteries, but also offer complete photovoltaic (PV) systems tailored to each customer's household electricity consumption, roof area, installation environment, and budget.

A typical home energy storage PV system generally includes:

PV modules
Inverter
Energy storage battery
PV mounting system
DC/AC cable
MC4 connector
Power distribution protection equipment
Smart meter/CT
Monitoring system

Specific configurations will be based on the household's daily electricity consumption and monthly bills; we will not add unnecessary solar panels or other equipment.

We primarily offer residential solar PV and energy storage products, including:

Balcony Solar Systems，All-in-One Integrated Energy Storage Systems

Residential Solar Systems，Hybrid Inverters / Energy Storage Inverters

Micro Inverters，PV Modules

Residential Energy Storage Batteries

Installation Accessories and Related Electrical Components

We also sell products from several well-known brands, such as Deye inverters, LONGi, Trina Solar modules, and others.

Depending on customer needs, we can provide individual products or complete residential solar PV system solutions.

Add the products to your cart and submit your order — no upfront payment. Our team will contact you to confirm the order and arrange delivery.

Delivery is free for all products, anywhere in Serbia.

The lead time depends on the equipment and your location — we agree the exact date when confirming your order.

Yes — along with the equipment we offer professional installation and commissioning.

Yes, we guide you through the grid-connection procedure and prepare the required paperwork.

A typical residential installation takes 1–2 working days.

Most products carry a warranty of up to 12 years — the exact term is listed on each product page.

Returns are accepted within 14 days of receipt, no questions asked. See the Terms of Service for details.

Reach us through the contact form (topic "Repairs & service") or give us a call — we reply within two working days.

Payment is arranged when your order is confirmed — payment slip or bank transfer for individuals, proforma invoice for companies.

Yes, we issue both a proforma invoice and a final invoice with full company details.

Yes — send an enquiry through the contact form (topic "Quote request") and we will prepare a quote for you.