{"id":14786,"date":"2026-06-23T08:58:14","date_gmt":"2026-06-23T08:58:14","guid":{"rendered":"https:\/\/sollab.pl\/?p=14786"},"modified":"2026-06-23T08:59:22","modified_gmt":"2026-06-23T08:59:22","slug":"5-kw-photovoltaic-system-with-energy-storage","status":"publish","type":"post","link":"https:\/\/sollab.pl\/en\/fotowoltaika-5kw-z-magazynem-energii\/","title":{"rendered":"A 5 kW solar power system with energy storage in 2026: how much does it cost?"},"content":{"rendered":"
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The SolLab Team<\/strong> \u2014 UDT- and SEP-certified installers, operating in Pomerania since 2011 \u00b7 Over 1,200 installations in the region \u00b7 Prices valid as of June 2026<\/p>\n<\/div>\n

Just two years ago, the question \u201ehow much does a 5 kW solar panel system cost?\u201d had a simple answer. Today A photovoltaic system without energy storage is a rarity<\/strong> \u2014 like a car without air conditioning. The market has changed fundamentally: with the RCEm below 0.15 z\u0142\/kWh, energy sold back to the grid is worth a mere few groszy, and self-consumption is the cornerstone of any sensible installation. In this article, we provide prices and calculations for what SolLab customers will be buying in 2026 \u2014 namely, a PV system with energy storage.<\/p>\n

Why is an installation without energy storage only half the solution these days?<\/h2>\n

With an RCE of 0.132 z\u0142\/kWh (April 2026) and a grid electricity price of 1.20\u20131.30 z\u0142\/kWh, the difference between the energy consumed on-site and that sold to the grid is close to 10-fold<\/strong>. A plant without a storage facility feeds 40\u201360% of its output into the grid \u2014 for next to nothing. It\u2019s like digging your own well and selling water to your neighbours for 1 grosz a litre, whilst buying it yourself from the shop for 10 groszy.<\/p>\n

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A new market standard in 2026:<\/strong> SolLab carries out installations without a storage unit in only two cases: (1) the customer has very high daily consumption (home office, workshops) and self-consumption without a storage system exceeds 70%, or (2) the customer deliberately chooses a hybrid inverter with plans to purchase a storage system within a year. A string-based installation without the option of expansion is a service that quickly becomes obsolete.<\/p>\n<\/div>\n

5 kW solar panels with energy storage \u2014 configurations and prices in the Tri-City in 2026<\/h2>\n

Below are four real-world configurations that SolLab is implementing in the Tri-City. Gross prices including installation, VAT 8%:<\/p>\n

\n\n\n\n\n\n\n\n\n
Configuration<\/th>\nGross price<\/th>\nSelf-consumption<\/th>\nWho is it for?<\/th>\n<\/tr>\n<\/thead>\n
5 kWp + hybrid inverter (without storage \u2014 temporarily)<\/td>\n22,000\u201325,000 z\u0142<\/td>\n25\u201330%<\/td>\nInverter ready for the warehouse \u2014 you can add it later<\/td>\n<\/tr>\n
5 kWp + 5 kWh storage<\/td>\n32,000\u201338,000 z\u0142<\/td>\n40\u201365%<\/td>\nMinimum for a house that is empty during the day<\/td>\n<\/tr>\n
5 kWp + 10 kWh storage (STANDARD 2026)<\/strong><\/td>\n40,000\u201348,000 z\u0142<\/td>\n50\u201375%<\/td>\nThe ideal setup for most homes<\/strong><\/td>\n<\/tr>\n
5 kWp + 15 kWh storage + EMS<\/td>\n48,000\u201358,000 z\u0142<\/td>\n60\u201380%<\/td>\nA house with a heat pump or an EV<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

SolLab guide prices, June 2026. VAT 8%. Installation on a standard pitched roof in the Tri-City.<\/p>\n

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Why a 5 kWp + 10 kWh system is the ideal solution for most homes:<\/strong> A four-person household with an annual consumption of 5,000 kWh needs a system that will generate energy and allow it to be used on-site. A 5 kWp system produces around 4,600 kWh per year in Pomerania. A 10 kWh battery storage system collects surplus energy at midday and releases it in the evening. Result: self-consumption of 80\u201390%, a real annual saving of 3,500\u20134,000 z\u0142. Without a storage system \u2014 1,500\u20131,800 z\u0142.<\/p>\n<\/div>\n

What does the price of a 5 kW photovoltaic system with a 10 kWh battery include?<\/h2>\n

With a total cost of approximately 41,000 z\u0142 gross, the typical breakdown is as follows. Note: Energy storage accounts for around half of the total cost of the system:<\/strong><\/p>\n

\n\n\n\n\n\n\n\n\n\n\n\n\n
Ingredient<\/th>\nEstimated cost<\/th>\nShare<\/th>\nComments<\/th>\n<\/tr>\n<\/thead>\n
Photovoltaic panels (10\u201311 units, TOPCon 480\u2013500 Wp)<\/td>\n4,500\u20135,500 z\u0142<\/td>\n~18%<\/td>\nTechnology of importance to Pomerania (IEC 61701)<\/td>\n<\/tr>\n
Hybrid inverter<\/td>\n4,500\u20136,000 z\u0142<\/td>\n~10%<\/td>\nHuawei, SolarEdge, Fronius, SigEnergy, FOX ESS<\/td>\n<\/tr>\n
Energy storage 10 kWh<\/strong><\/td>\n15,000\u201325,000 z\u0142<\/td>\n~45%<\/td>\nSigenergy, Huawei, FOX ESS<\/td>\n<\/tr>\n
EMS \/ HEMS system<\/td>\n0\u20132,000 z\u0142<\/td>\n~3%<\/td>\nOften built into an inverter or storage unit<\/td>\n<\/tr>\n
Design, cabling, safety features<\/td>\n6,000\u20138,000 z\u0142<\/td>\n~7%<\/td>\nA higher standard for the coastal area<\/td>\n<\/tr>\n
Installation and commissioning<\/td>\n4,000\u20135,000 z\u0142<\/td>\n~10%<\/td>\nEMS programming, warehouse calibration<\/td>\n<\/tr>\n
Administrative procedures (OSD Energa, documentation)<\/td>\n500 z\u0142<\/td>\n~2%<\/td>\nRegistration of the warehouse with the OSD as well<\/td>\n<\/tr>\n
VAT 8%<\/td>\n3,000\u20134,000 z\u0142<\/td>\n~8%<\/td>\nRate for residential construction<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

How do you choose the right size of energy storage system for a 5 kW installation?<\/h2>\n

The size of the storage system depends on your home\u2019s energy consumption profile \u2014 not on the system\u2019s capacity. As a rule of thumb, the storage system should be able to absorb all surplus energy from the midday peak and balance out evening consumption. For a 5 kWp system in Pomerania, the peak surplus is around 8\u201312 kWh on a summer\u2019s day.<\/p>\n

\n\n\n\n\n\n\n\n\n
House profile<\/th>\nRecommended capacity<\/th>\nEMS Strategy<\/th>\nEffect<\/th>\n<\/tr>\n<\/thead>\n
A two-person household, consumption 3,000\u20134,000 kWh\/year<\/td>\n5\u20137 kWh<\/td>\nCollect surplus produce from the south<\/td>\nEnough for the evening and night<\/td>\n<\/tr>\n
A four-person household, consumption 4,500\u20136,000 kWh\/year<\/strong><\/td>\n10 kWh<\/td>\nFull 24-hour autonomy<\/td>\nIdeal for most homes<\/strong><\/td>\n<\/tr>\n
A house with a heat pump (DHW + heating)<\/td>\n10\u201315 kWh<\/td>\nCooperation with HP in AI-TOU mode<\/td>\nPrioritising charging before prices peak<\/td>\n<\/tr>\n
A house with an EV and a heat pump<\/td>\n8\u201310 kWh<\/td>\nSmart EV charging using solar power<\/td>\nThe need to expand the system to 8\u201310 kWp<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

EMS, HEMS and AI \u2014 how does a smart system manage energy?<\/h2>\n

A modern photovoltaic system is not just about panels and storage. A key component is the energy management system (EMS\/HEMS), which coordinates all the components. By 2026, most Tier-1 inverters will have a built-in EMS with artificial intelligence features:<\/p>\n

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AI-TOU (Time of Use)<\/p>\n

The system analyses historical energy prices and automatically charges the battery during the cheapest hours (e.g. at night) and discharges it during peak pricing hours (17:00\u201321:00). With dynamic tariffs, this translates to a real saving of an additional 200\u2013400 z\u0142 per year.<\/p>\n<\/div>\n

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Weather forecast<\/p>\n

EMS retrieves sunshine forecasts for the next 24\u201348 hours and plans its charging strategy. Before a cloudy day, it charges the storage system more aggressively from the grid at a low price.<\/p>\n<\/div>\n

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Smart EV charging<\/p>\n

If you have an electric car, the EMS prioritises charging it during peak PV generation hours and prevents it from charging from the grid when the price exceeds a certain threshold.<\/p>\n<\/div>\n

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Integration with a heat pump<\/p>\n

The system sets the heat pump to run between 10.00 and 14.00, when the PV system is generating at its peak and the energy is effectively free.<\/p>\n<\/div>\n

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From our practice in the Tri-City:<\/strong> Customers with a built-in EMS AI achieve an average self-consumption that is 8\u201312% higher than with a standard string inverter. On an annual basis, this amounts to 350\u2013550 kWh of additional self-consumption \u2014 420\u2013660 z\u0142 more in your pocket without any changes to your energy consumption. More information on the energy market and dynamic tariffs is published Energy Regulatory Office<\/a>.<\/p>\n<\/div>\n

Payback calculation: 5 kW solar panel system without energy storage vs. with energy storage<\/h2>\n
\n\n\n\n\n\n\n\n\n\n\n
Indicator<\/th>\n5 kWp without storage<\/th>\n5 kWp + 10 kWh storage<\/th>\n<\/tr>\n<\/thead>\n
Cost of the investment<\/td>\n~22,000 z\u0142<\/td>\n~41,000 z\u0142<\/td>\n<\/tr>\n
Subsidy (PIT relief + NFO\u015aiGW warehouse)<\/td>\n~2,500 z\u0142<\/td>\n~18,500 z\u0142<\/td>\n<\/tr>\n
Net cost<\/td>\n~19,500 z\u0142<\/td>\n~22,500 z\u0142<\/td>\n<\/tr>\n
Self-consumption<\/td>\n50\u201360%<\/td>\n80\u201390%<\/td>\n<\/tr>\n
Annual benefit (electricity + sales)<\/td>\n~2,800 z\u0142<\/td>\n~4,500 z\u0142<\/td>\n<\/tr>\n
Payback period (net)<\/strong><\/td>\n7\u20138 years<\/td>\n5\u20136 years<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

Calculation for a 4-person household, consumption 5,000 kWh\/year, Tricity, electricity price 1.23 z\u0142\/kWh, RCEm 0.132 z\u0142\/kWh.<\/p>\n

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The practical benefit for SolLab\u2019s client:<\/strong> A 5 kWp system + 10 kWh battery storage for 44,000 z\u0142 gross. After the NFO\u015aiGW grant (\u201316,000 z\u0142) = 28,000 z\u0142. After the PIT relief (\u20133,360 z\u0142) = 24,640 z\u0142 net cost<\/strong>. That\u2019s less than the PV system itself \u2013 without storage \u2013 cost two years ago.<\/p>\n<\/div>\n

Subsidies for a 5 kW solar panel system with energy storage in 2026<\/h2>\n