The photovoltaic installation and energy storage alone are only half of the success on the way to energy independence. A real revolution in the household budget occurs when the system is managed by HEMS (Home Energy Management System). In the era of net-billing, dynamic energy prices and smart zone tariffs, HEMS is the digital brain of the modern household.
In this guide, we explain what exactly the HEMS system is, how it works in practice, how it can reduce electricity bills and why it has become an indispensable element of RES installations implemented by Hymon.
HEMS (Home Energy Management System) is a technologically advanced hardware and software system, the main task of which is to continuously monitor, analyze and automatically control the flow of electricity and heat in a building.
Unlike traditional, passive monitoring applications, HEMS performs active management operations in real time. It combines into one integrated ecosystem:
Although these terms are sometimes used interchangeably, in the energy market in 2026 we clearly distinguish between two levels of management:
| Feature / Function | HEMS (Home Energy Management System) | EMS (Energy Management System) |
| Main area of activity | Whole household (energy + comfort + appliances) | Specialized management of the battery/PV technical layer |
| Device integration | PV, warehouse, heat pump, household appliances, roller shutters, lighting | Mainly hybrid inverter, energy storage, BMS, grid |
| Primary objective | Maximizing self-consumption and comfort of household members | Battery Safety and Charge/Discharge Optimization |
| User interface | Dedicated Smart Home App / Voice Control | Technical panel / algorithms sewn into the inverter |
At the heart of the newly implemented HEMS systems at Hymon are predictive artificial intelligence (AI) algorithms. The operation of the system is not based on simple time schedules, but on a multidimensional analysis of data entered in a continuous mode.
On a sunny summer day, the photovoltaic system generates surplus power. If the energy storage is fully charged, HEMS automatically starts the heat pump to heat the DHW tank to 65°C or turns on the air conditioning to cool the house before the residents return. Instead of putting cheap electricity into the grid at a price hole, you convert it into free thermal energy.
The implementation of a coherent energy management ecosystem brings measurable financial returns and increases the comfort of life:
To verify the profitability of investments in intelligent energy control, we analyzed the results of completed micro-installations.
The impact of the implementation of the HEMS system on economic indicators:
According to Internal Data Hymon (2025/2026) and analyses of the RES market in Poland, the non-optimization installation of solar panels alone in new billing models is losing profitability in favor of integrated Smart Energy ecosystems.
At Hymon, we make sure that the process of switching to smart energy management goes smoothly. HEMS installation takes place in a few simple steps:
Will HEMS work without energy storage?
Yes, HEMS can function without a physical energy storage. In such a system, the system controls current consumption – it turns on the heat pump, hot water buffer or selected household appliances exactly when the photovoltaic panels produce the most electricity. However, combining HEMS with energy storage allows you to achieve the highest efficiency.
No, after the initial configuration carried out by Hymon installers, the system works completely automatically. The user has access to an intuitive application on the smartphone, where they can view the current energy flows, the savings generated and, if necessary, change the preferred settings.
Can a HEMS system be installed in an existing photovoltaic system?
Yes, it is possible to upgrade a functioning PV system with a HEMS system. The solutions offered by Hymon are highly compatible and can work with many types of inverters and consumers in a building.
What is the difference between HEMS and Smart Home?
Smart Home focuses primarily on comfort and home automation (control of lighting, roller shutters, alarm systems). HEMS is strictly focused on optimizing energy flows and reducing operating costs. HEMS from Hymon combines both of these functions in one application.
The HEMS system is a key step towards a modern, self-sufficient and economical home. The integration of photovoltaics, energy storage and heat pump under the supervision of an intelligent energy manager allows you to minimize the costs of maintaining the property and resist electricity price increases.
Want to find out how much you can save by implementing HEMS in your home?
👉 Contact a Hymon Advisor and Request a Free Quote for the Energy Efficient Ecosystem
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Rising energy prices, the growth of dynamic tariffs and changes to the photovoltaic billing system mean that more and more homeowners are considering energy storage. Just a few years ago, it was seen as an add-on to a PV installation. Today, for many investors, it is becoming the most important part of the system.
Is energy storage really worth it? How do you choose the right capacity? How much will energy storage cost in 2026? Find out the key facts.
An energy storage system is a device fitted with batteries that stores surplus energy generated by a photovoltaic system.
Instead of feeding unused energy back into the grid, it can be stored for later use and utilised when energy production from the panels is low or non-existent.
This increases self-consumption of energy, i.e. the amount of energy used directly for one’s own needs.
In the net-billing system, energy fed into the grid is sold at market prices and subsequently repurchased along with distribution charges.
Energy storage enables you to:
The most common mistake is to select a battery based solely on the power output of the photovoltaic system.
Far more important are:
Approximate formula:
Example:
An example of selecting a capacitor bank for power draw:
The price depends on the manufacturer, the battery technology, the scalability and integration with the energy management system (EMS).
Indicative prices for energy storage facilities in 2026
This means that significantly less energy needs to be purchased from the grid, particularly in the evenings.
Yes.
An increasing number of users are installing energy storage systems without photovoltaic panels.
This solution can be used in conjunction with:
Example:
Electricity is purchased at night at a lower price, stored, and then used during peak hours.
This solution is becoming particularly attractive with the growth of dynamic tariffs.
‘Mój Prąd’ remains the most popular scheme.
In previous rounds, it was possible to receive as much as:
It’s also worth checking out:
The current terms and conditions of the schemes are subject to change, so it is worth checking the available calls for applications before investing. Hymon offers a comprehensive service, including assistance with grant-related paperwork.
Financial benefits
Is an energy storage system worth it?
Yes, particularly when combined with a solar panel system and given rising energy prices. The higher the self-consumption, the greater the savings.
Which energy storage system should you choose for a 10 kWp installation?
Storage systems with a capacity of 10 to 15 kWh are most commonly recommended, although the final choice depends on your energy consumption.
How long does an energy storage system last?
Modern lithium iron phosphate (LiFePO4) batteries have a service life of up to 6,000–10,000 charge cycles.
Does the energy storage system work during a power cut?
Yes, provided the system is equipped with a backup power function.
Can the energy storage system be expanded in the future?
Most modern systems allow for modular capacity expansion.
How much does an energy storage system for a 10 kW photovoltaic installation cost?
In 2026, the cost of a complete energy storage system with a capacity of 10–15 kWh, including installation, is estimated to be between 20,000 and 40,000 PLN, depending on the manufacturer, capacity, technology used and features such as a backup power supply or intelligent energy management (EMS).
How long does it take to charge a 10 kWh energy storage system from the grid?
With the most common power output of 5 kW, it takes around 2 hours to fully charge a 10 kWh storage system. At 3 kW, the process takes around 3–4 hours, whilst at 10 kW it can take around an hour.
Does an energy storage system make sense in winter?
Yes. Although a solar panel system produces less energy in winter, the storage system still increases self-consumption and allows energy generated during the day to be stored for use in the evening.
Can an energy storage system be installed in an unheated room?
Yes, but the manufacturer’s recommendations must be followed. Most modern energy storage systems can operate at temperatures ranging from around -10°C to +50°C.
How often does the energy storage system need to be replaced?
When used correctly, the energy storage system usually does not need replacing for 15–20 years. After this time, the battery capacity may drop to around 70–80 per cent of its original value, but the system can still be used.
Until recently, the main purpose of a photovoltaic system was to generate energy. Today, using that energy efficiently is becoming just as important.
A well-chosen energy storage system allows you to increase self-consumption, minimise the impact of fluctuations in energy prices, and prepare your home for a future based on smart energy management.
At Hymon Powered by Kajima, we help you choose an energy storage system tailored to your actual energy consumption, the capabilities of your photovoltaic installation and your household’s development plans.
Get in touch with our advisor and find out what energy storage capacity would be best for your home!
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Building a single-family house is a unique moment: exciting, but also full of decisions that will affect your comfort, operating costs and independence for the next decades. One of the most important decisions that should be made and taken into account at the design stage is the preparation of a building for renewable energy sources – renewable energy sources.
In this guide, we show you step by step how to plan a house of the future that will be warm, cheap to maintain and ready for clean energy flowing from nature.
Most investors postpone the decision on heating and energy systems until the last moment. This is a big mistake. Later installation of a heat pump, photovoltaics or an energy storage is associated with costly modifications, additional works and sometimes … simply the lack of technical possibilities.
RES planning even before construction allows:
This is a chance to pay less and live more comfortably from the first day in your new home.
Today, an energy-efficient house is not a luxury, but a reasonable standard. In practice, this means the use of several cooperating solutions that will ensure comfort and low costs throughout the year:
Such a combination makes the house gain not only a modern character, but above all – real savings and energy independence.
Here are the most common bugs we see as a company that assembles thousands of installations annually:
However, the above mistakes can be avoided if you have a plan from the very beginning. At Hymon Powered by Kajima, we are here to help you create and realize it.
Here is a specific list of things to consider before pouring the foundations:
design:
Installations:
Air conditioning:
Energy Storage:
It is also worth consulting an expert at this stage to check, Czy dom meets the conditions for obtaining funding from programs such as “My heat”.
A modern single-family house is not only a nice shape and a good location, but above all reasonable decisions that will pay off in a few years.
Instead of fixing bugs, it is worth planning an energy system tailored to your needs: comfortable, economical and ready for the next decades.
At Hymon Powered by Kajima, we help private investors at every stage of construction: from design, through the selection of devices, to assembly and obtaining a subsidy.
Leave a contact and we will check for free how to prepare your house for renewable energy before the first brick appears. Don’t plan twice. Do it once, good!
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It is constantly adjusted to best meet the needs of the market and improve the grant award process. In mid-July 2025, the National Fund for Environmental Protection and Water Management introduced two important updates to the Regulations, which relate to the deadlines and the procedure for submitting applications. Below we explain what exactly has changed and what should be paid special attention to efficiently and effectively obtain funding.
In response to the unflagging record-breaking interest in the Program, the National.
new date – Applications for co-financing under the “Mój Prad 6.0” program can be submitted to October 31, 2025.
Important note: the recruitment is carried out on a continuous basis, which means that it can be completed earlier if the record pool of funds (PLN 1.85 billion) is exhausted before the deadline. Therefore, it is not worth delaying submitting a complete application.
This is the most important procedural change that entered into force on July 16, 2025. Its aim is to streamline the application evaluation process and accelerate the payment of funds for beneficiaries.
According to the new regulations, the applicant has the right to submit Up to four adjustments to your application for funding.
What does this mean in practice? Once this limit is exceeded, the application may be rejected without further improvement. This change places great emphasis on diligence and accuracy when preparing the application. Filling out the application precisely and attaching all correct documents the first time becomes crucial for the success of the entire process.
It is worth noting that the fundamental assumptions of the “Mój Prąd 6.0” program have not changed. The same rules apply to:
• Mandatory joining of PV installations with energy storage or heat storage for a grant.
• maximum amounts of subsidieswhich can still amount to a total of PLN 28,000 per energy consumption point.
• system settlement requirement net-billing.
Take advantage of professional support The new procedural rules require even greater precision when submitting the application. If you want to be sure that your documents will be prepared flawlessly and submitted on time, use the help of our experts. We provide comprehensive support at every stage – from auditing, through the selection of devices, to professional assistance in going through all formalities related to the subsidy.
Get in touch with us!