Energy Storage 20 kWh – price, models Growatt and selection for the inverter (2026)

Energy Storage 20 kWh - price

Door Design	Price	To the inverter	Housing and warranty
Growatt APX 20 kWh (APX 20.0M-S3)	4 649,79 € excluding VAT: 3 780,32 €Add to cart	hybrid MOD-HU, MIN-XH, MID-XH, MOD-XH BP	IP66 10-year warranty Expandable to 30 kWh
Growatt ARK 20,48 kWh — SPH kit	4 967,67 € excluding VAT: 4 038,76 €Add to cart	hybrid SPH TL3 BH-UP	IP65 10-year warranty controller HVC and base included
Growatt ARK 22,5 kWh — SPH kit	5 425,05 € excluding VAT: 4 410,61 €Add to cart	hybrid SPH TL3 BH-UP	IP65 10-year warranty controller HVC and base included
Growatt HOPE 20 kWh — kit for SPF	3 140,77 € excluding VAT: 2 553,47 €Add to cart	off-grid SPF	IP20, indoor 10-year warranty
Growatt ALP 20 kWh — kit for SPF	3 146,19 € excluding VAT: 2 557,88 €Add to cart	off-grid SPF	IP66 10-year warranty

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The choice is determined by the inverter - you can find the model on its nameplate; the selection is described below in the article. The operating time in the header is calculated based on the nominal capacity at a constant consumption of 1 kW; the actual consumption depends on the consumption and the inverter. Prices without installation (after logging in to the company account - net with a group discount), taken from the store catalog; the number of pieces in BytomYou can see it on the product card. Batteries are shipped as a pallet shipment (ADR goods) - shipping costs are calculated in the shopping cart before ordering. Payment: card, BLIK, Przelewy24, transfer, or Klarna. Questions before ordering? +48 662 000 505 · Mon–Fri 8:00–16:00.

Don't have an inverter? Ready-made pairs with 20 warehouse kWh

You add each pair to your cart with two buttons—inverter and magazine. You can add the entire set with one click. configurator Growatt, and you can find more pairs on the website energy storage with inverter.

To	Inverter price	Warehouse price
House with 3-phase installation up to 10 kW Growatt MOD 10KTL3-HU + Growatt APX 20 kWh (APX 20.0M-S3)	1 276,21 € excluding VAT: 1 037,57 €Add to cart	4 649,79 € excluding VAT: 3 780,32 €Add to cart
House with 3-phase installation up to 15 kW Growatt MOD 15KTL3-HU + Growatt APX 20 kWh (APX 20.0M-S3)	1 475,73 € excluding VAT: 1 199,78 €Add to cart	4 649,79 € excluding VAT: 3 780,32 €Add to cart
Inverter with UPS function (emergency power supply in the event of a power outage) Growatt SPH 10000TL3 BH-UP + Growatt ARK 20,48 kWh — SPH kit	1 214,49 € excluding VAT: 987,39 €Add to cart	4 967,67 € excluding VAT: 4 038,76 €Add to cart
House without the grid (off-grid) Growatt SPF 6000ES Plus + Growatt HOPE 20 kWh — kit for SPF	429,49 € excluding VAT: 349,18 €Add to cart	3 140,77 € excluding VAT: 2 553,47 €Add to cart

Why Growatt: inverters Growatt have the title of Top Brand PV in Poland 2021–2024 (EUPD Research), and in 2024 Growatt was the world's fourth supplier of inverters (wood mackenzie). Warranty claims are handled by the manufacturer's service center. Growatt in Mysłowice. Are you buying for a company? Up to 30% discount with B2B account.

In short:

• Price: current price of the set HOPE 20 kWh (LV), system APX 20 kWh HV Battery 2.0 (HV) and other configurations can be found in the pricing table at the top of the page. HOPE suitable for inverters off-grid SPF, i.e. island inverters. You can find all models in the category energy storage.
• Subsidy from the Home Energy Storage Program (PME 2): up to 30% of eligible costs, maximum PLN 800 per 1 kWh nominal capacity and PLN 16,000 in the net-billing system.
• At 20 kWh limit 800 PLN for 1 kWh gives PLN 16,000, which is the same as the net-billing limit. Photovoltaics: up to 10 kWp (kilowatt-hours).
• LiFePO4 cells in all series. Warranty: 10 years - manufacturer (APX, ARK, ALP), on offer PVGroup.pl (HOPE).

Table of Contents:

• Equipment price
• What's included in the price
• Selection for the inverter
• PME 2 Grant – Rules
• 20 kWh or 15 or 25 kWh
• 20 kW or 20 kWh
• Modules, BMS, expansion
• How to order
• Questions and Answers

Specifications are taken from the manufacturer's catalog datasheets. Current prices and availability are shown live from the store. PVGroup.pl in the price table at the top of the page. Prices are for hardware only, excluding the inverter and installation.

Energy Storage 20 kWh – models Growatt in one table

Five configurations 20 kWh differs by voltage class and the inverter it works with. The table shows the nominal capacity; the name leads to the product card, and you can see the current price with a shopping cart button in the price table at the top of the page.

Prices for these configurations, excluding the inverter and installation, are shown live in the price table at the top of the page. The nominal capacity, according to the manufacturer's documentation, is the number of modules multiplied by the nominal capacity of the module. The kit's trade name may be a rounding of the nominal capacity. For a module ALP 5.0L-E2 documentation gives one capacity value: 5,0 kWh. LV (low voltage) stands for low voltage storage and HV (high voltage) stands for high voltage storage.

You can check all capacities and current availability in the category energy storage in the store PVGroup.pl.

sets APX 20 kWh for inverters MID-XH and MOD-XH BP have been discontinued and are being replaced by the system Growatt APX 20 kWh HV Battery 2.0 (APX 20.0M-S3).

The price is primarily determined by the inverter, because the inverter determines which series of warehouses fits it.

What is included in the price of the energy storage 20? kWhand what it does not contain

Energy Storage Price 20 kWh from the table includes the warehouse itself: battery modules and BMS, i.e. the Battery Management System. In the system APX 20 kWh HV Battery 2.0 price also includes the base and three-phase energy meter Growatt TPM-CT-E-EU. Check the ingredients on the product card in the store.

The price in the table does not include three things:

• Inverter. If you already have an inverter prepared to work with an energy storage device, you only need to purchase the storage device.
• Assembly. We do not provide installation costs: they depend on the installation and are priced by the installation company.
• Protection and electrical equipment. They are selected by the installation designer. Some inverters require a separate device to provide emergency power to the entire house: SYN 50-XH-10 for MIN-XH or EU series SYN-100-XH-30 for the MOD-XH series and MID-XH, according to manufacturer's documentation.

The price of the magazine itself is influenced by four things:

• Voltage class. LV and HV magazines have different prices per 1 kWh capacity.
• Nominal capacity. The positions in the table are from 20 to 23,04 kWh.
• Accessories included. System APX the price includes a base and an energy meter.
• BMS. Modules ARK 2.5H-A2 managed by the controller HVC 60050-C2 — in sets ARK do SPH is included in the set with the base (according to the set description in the store); in the system APX functions BMS serves as the master module.

How much does a 20-unit warehouse cost? kWh with assembly?

We do not provide prices including assembly because PVGroup.pl sells equipment. When comparing offers from the market, check three things:

• whether the price is for the warehouse itself, the warehouse with the inverter, or the complete set with assembly;
• what is the nominal capacity and price for 1 kWh;
• what inverter does the warehouse work with?

Prices for all capacities from 5 to 100 kWh we describe in the article how much does an energy storage facility cost?.

What energy storage 20 kWh fits the inverter Growatt?

For inverters SPF matching sets HOPE 20 kWh i ALP 20 kWhFor three-phase inverters SPH TL3 BH-UP fits ARK 20,48 kit kWh. For MIN-XH, MOD-XH BP, MOD-HU and series MID-XH fits system APX 20 kWh HV Battery 2.0.

Capacity alone isn't enough to choose a storage system. Each inverter series operates with a single voltage class, either LV or HV, and that class is determined by the inverter.

Source: manufacturer's catalog datasheets and our technical team's selection guidelines, as of September 18, 2026. The series name refers to the inverter category in the store. The abbreviations EPS (emergency power supply) and UPS refer to emergency power supply during a power outage in the manufacturer's documentation.

There are two important considerations when purchasing:

• The MIN-XH inverter works with the ARK 2.5H-A2 storage unit only in self-consumption mode. The manufacturer specifies the storage unit for emergency power supply. APX and device SYN 50-XH-10.
• For inverters WIT-HU and to the SPH-HU series (this is a different series than SPH TL3 BH-UP from the price table) we do not have a ready set of 20 kWh. Check the composition in configurator Growattwho selects the storage device for the inverter, or ask our technical team.

Price differences between configurations are due to the voltage class: LV sets (HOPE i ALP, 51,2 V) and HV systems (APX and ARK) have different price for 1 kWh.

Prices in both classes are explained in the article energy storage price list from 5 to 100 kWhWe compare low-voltage storage systems in a separate article: LV battery comparison GrowattThe series is described in the guide energy storage Growatt.

Is warehouse 20 kWh power your home during a grid outage?

This depends on the inverter, not the storage unit itself. SPH have a UPS function, and the MOD-HU series has an EPS function, i.e., an emergency power output. The MOD-XH BP series has a built-in EPS output, but whole-house backup power requires an EU box SYN-100-XH-30. For the series MID-XH manufacturer provides the same box. The range of emergency circuits is determined by the installation design.

Funding for energy storage 20 kWh – PME 2 rules

Subsidy from the PME 2 program for energy storage 20 kWh is a maximum of PLN 16,000 in the net-billing system or PLN 8,000 in the net-metering system. You can calculate the amount for your own valuation in the four steps described below.

The program applies only to Poland. Witgovernment market przydomowemagazyny.gov.pl announces that the call for applications will start on October 20, 2026 at 9:00 a.m. and will last until October 1, 2027 (20:00 p.m.) or until the budget is exhausted (as of October 2, 2026).

The subsidy covers up to 30% of eligible costs. The program also has two amount limits: PLN 800 for 1 kWh nominal capacity and PLN 16,000 in the net-billing system or PLN 8,000 in the net-metering system. The lowest of these three values ​​applies.

Only with nominal capacity 20 kWh both amount limits are equal: PLN 800 × 20 kWh = PLN 16,000. With a nominal capacity of 20,48 kWh The first limit is PLN 16,384, so the lower limit is PLN 16,000. As long as the eligible cost does not exceed PLN 53,333, the 30% limit determines the amount.

You can choose the storage for your inverter in configurator Growatt, and all models can be found in the category energy storage.

You can calculate the subsidy for your own valuation in four steps:

1. Add up the eligible costs: the price of the warehouse and the cost of assembly.
2. Calculate 30% of this sum.
3. Calculate PLN 800 × nominal capacity of the warehouse in kWh.
4. Select the lowest value: step 2 result, step 3 result or limit of PLN 16,000 (net-billing) or PLN 8,000 (net-metering).

The program also includes warehouse installation among eligible costs. The full PLN 16,000 subsidy for the warehouse 20 kWh requires an eligible cost of PLN 53,333, i.e. PLN 2,667 per 1 kWhThe program also has a purchase and installation price limit: PLN 3,000 for 1 kWh nominal capacity.

The program has three more requirements:

• Rule of two. The nominal capacity of the storage in watt-hours must be at least twice the photovoltaic power in watt-hours. With a capacity of 20 kWh this means photovoltaics with a capacity of up to 10 kWp.
• Island work. The inverter or set of devices must have an emergency power supply function.
• EMS (Energy Management System). This is an energy management system. The manufacturer has issued a declaration for six series of inverters: MIN-XH, MOD-XH, MOD-HU, MID-XH, WIT-HU and SPH BH-UP. The declaration lists the designation "MOD 3-10KTL3-XH," so ask the manufacturer if it also covers the BP variant.

Disclaimer for Inverter Kits SPF. Door Line SPF is not included in the manufacturer's EMS declaration, and the program requires a micro-installation connected to the network. The program's FAQ excludes installations off-grid: if the network operator confirms the system off-grid, the subsidy will not be granted (question 2). If you plan to receive a subsidy, choose a set with a hybrid inverter connected to the grid.

More information can be found in the articles: conditions for subsidy for energy storage , home energy storage and subsidy for energy storage.

Energy Storage 20 kWh or 15 or 25 kWh – for whom which capacity

Energy Storage 20 kWh is a good choice in two situations.

Photovoltaics from 7,5 to 10 kWp and subsidy plan. Warehouse 15 kWh meets the two-fold rule up to 7,5 kWp. Warehouse 20 kWh meets it up to 10 kWp, and the warehouse 25 kWh up to 12,5 kWp. This is a program rule, not a consumption assessment.

Building with high energy consumption in the evening and at night. Let's assume that the building uses 15 kWh energy from dusk till dawn. Then warehouse 15 kWh leaves no stock and warehouse 20 kWh leaves 5 kWhThis is an assumption made for the example, not market data.

Warehouse 20 kWh is not a good choice in two situations. First, the photovoltaic system has a capacity greater than 10 kWp and you're planning a subsidy, because the rule of two requires a larger capacity. Second, your inverter isn't listed in the compatibility table, because then you'll need to select an inverter first.

The minimum capacity is the photovoltaic power multiplied by two, according to the rule of two of the PME 2 program. It is the nominal capacity that counts.

The second table compares capacities of approximately 15, 20, and 25 kWh in the same series; the set name leads to the product card with the current price.

Each cell provides the nominal capacity; the set name links to the product card with the current price. The series name links to the variant card 20 kWh.

In series HOPE, ALP i APX capacity increases in steps of about 5 kWh — you add another module.

You can choose the storage for the inverter in configurator GrowattWe also describe adjacent capacities: energy storage 15 kWh and energy storage 30 kWh.

Energy storage 20 kW or 20 kWh – power and capacity

20 kW energy storage and 20 kW energy storage kWh are not the same: kW means power, and kWh means capacity. The queries "20 kW energy storage" and "20 kW energy storage price" almost always refer to a storage with a capacity of 20 kWh.

Power indicates how quickly the system releases energy and depends primarily on the inverter. Capacity indicates how much energy the storage device can store.

Example: inverter MID20KTL3-XH has a power of 20 kW, the MOD inverter 10KTL3-XH BP has a power of 10 kW, and the inverter SPF The 6000ES PLUS has a power of 6 kW. Each can be equipped with a 20-volt energy storage system. kWh.

The warehouse also has its own power limit. System datasheet APX The 20.0M-S3 delivers a maximum power of 10 kW and a peak power of 14 kW for 10 seconds. The power of the entire system is limited by the inverter. For sets HOPE, ALP i ARK We do not provide charging or discharging power; please check these values ​​in the manufacturer's data sheet.

Compare offers by capacity in kWh and prices for 1 kWh.

What does the 20 magazine consist of? kWh – modules, BMS, expansion

Warehouse 20 kWh marki Growatt consists of 4 modules of approximately 5 each kWh (HOPE, ALP, APX) or from 8 modules of 2,56 kWh (ARK). All four series feature LiFePO4 cells, or lithium iron phosphate cells.

Source: manufacturer's documentation and product cards in the store PVGroup.pl, as of September 18, 2026. All series have LiFePO4 cells. The series name links to the variant 20 card kWh.

For the system APX The 20.0M-S3 data sheet also lists an IP66 protection rating and an operating temperature of −20°C to 55°C. The system measures 590 × 1,220 × 255 mm and weighs 188,2 kg. The master module weighs 51 kg, and the battery module weighs 45 kg.

System APX 20 kWh HV Battery 2.0 replaced the older generation sets, which consisted of 4 modules APX 5.0P-B1 and separate BMSIn the new generation, the function BMS fully master module APX 5.0M-B3 which also has its own capacity of 5 kWh.

Is it possible to expand the warehouse from 10 kWh to 20 kWh?

Yes, if the inverter supports higher capacity. The expansion range for each series is listed in the table above. Option 10 kWh we describe separately: energy storage 10 kWh.

• APX HV Battery 2.0: expansion from 10 to 20 kWh means purchasing two modules APX 5.0P-B3. Check the module price and availability on the product page. Above 30 kWh, with inverter MID-XH, two master modules are needed.
• ARK 2.5H-A2 with SPH inverter: expansion from 10,24 to 20,48 kWh means purchasing four modules. You can check the module price and availability on the product page. Details are provided in the article. versions and stock limits Growatt ARK.
• HOPE 5.0L-B1: You can check the price and availability of the module on the product card.

Before purchasing, ask our technical team how long after initial installation the manufacturer allows for the addition of modules. The program treats modules connected to a single PPE as a single warehouse. Expansion to the required capacity is only possible with additional modules of the same model, if permitted by the manufacturer. All parts must be purchased, installed, and reported to the OSD by November 1, 2025, and warehouses from two different manufacturers are not eligible (FAQ, questions 4, 13, and 14).

Module HOPE 5.0L-B1: 10-year warranty included PVGroup.pl. IN PVGroup.pl devices are covered by a European service warranty.

How to order – configurator and purchase for companies

Start your order with the inverter, not the storage unit. The inverter model determines the series and voltage class of the storage unit, and only then do you select the capacity.

This way you will avoid four mistakes:

• comparing the price of installation with the price of the equipment itself;
• confusing the power of 20 kW with the capacity of 20 kWh;
• selecting a warehouse before checking the voltage class of the inverter;
• calculating the subsidy based on the capacity of the trade name instead of the nominal capacity.

The purchase is made in four steps:

1. Check the inverter model on the nameplate.
2. Find its series in the compatibility table or select it in configurator Growatt, which selects the storage device for the inverter.
3. On the product card from the first table, check the current price, availability and composition of the set.
4. For a new installation, select both devices together: you will find inverters in the category inverters, and magazines in the category energy storage.

Gross prices are visible in the store without logging in. After logging in, installation companies see prices net of VAT, with a discount for their group.

If you have any questions, please contact our technical team via the contact page and provide the inverter model and photovoltaic power. The selection is free of charge.

Energy Storage 20 kWh – frequently asked questions about price and selection

How much does an energy storage facility cost? 20 kWh?

The current price of each of the five configurations Growatt 20 kWh You can see the pricing table at the top of the page—we download it from the store each time you view it. Prices are for the warehouse only; the inverter and installation are separate costs.

How much does a 20 kW energy storage cost?

The query "energy storage 20 kW price" usually refers to a capacity of 20 kWh — You can see the current prices for these configurations in the price table at the top of the page. The 20 kW power is a parameter of the inverter, for example, the inverter MID20KTL3-XH.

Is the 20 kW energy storage and the 20 kW energy storage kWh mean the same thing?

No. Kilowatt (kW) means power and kilowatt-hour (kWh) means capacity. The power is mainly determined by the inverter, and the query "20 kW energy storage" almost always refers to a capacity of 20 kWhExample: system APX 20 kWh According to the catalog card, HV Battery 2.0 has a maximum power of 10 kW.

What subsidy is available for energy storage 20? kWh in 2026?

The subsidy from the PME 2 program amounts to up to 30% of eligible costs, with a maximum of PLN 800 per 1 kWh nominal capacity and PLN 16,000 in the net-billing system or PLN 8,000 in the net-metering system. Inverter kits off-grid SPF are eliminated when the network operator confirms the system off-grid (Program FAQ, question 2). The application period opens on October 20, 2026.

Which inverter fits the energy storage 20 kWh?

An inverter that has the same voltage class as the storage unit will fit. Inverters SPF work with sets HOPE 20 kWh i ALP 20 kWh. Three-phase inverters SPH TL3 BH-UP works with the ARK 20,48 kit kWh. MIN-XH, MOD-XH BP, MOD-HU i series MID-XH work with the system APX 20 kWh HV Battery 2.0.

How many photovoltaic panels fit into a 20-unit energy storage unit? kWh?

In the PME 2 program, a warehouse with a nominal capacity of 20 kWh Suitable for photovoltaics up to 10 kWp. Assuming a 450W panel: 22 panels have a total of 9,900 Wp and meet the rule of two. 23 panels have 10,350 Wp, which is too much for a 20-watt warehouse. kWh.

How long will the energy storage last 20? kWh?

How long does 20 last? kWh, depends on the power consumption in the building. Let's assume a constant consumption of 1 kW: the result of the calculation is 20 kWh ÷ 1 kW is 20 hours. With a constant consumption of 2 kW, the result is 10 hours. In practice, consumption varies throughout the day, and the instantaneous power is limited by the inverter.

What is energy storage 20 kWh?

Energy Storage 20 kWh is a set of battery modules with a total capacity of approximately 20 kilowatt-hours. The storage unit collects energy from photovoltaics and releases it via an inverter. Our offering includes LiFePO4 cells and consists of four modules of approximately 5 watts each. kWh or from 8 modules of 2,56 kWhThe inverter determines the storage voltage class: LV or HV.

Is energy storage 20 kWh can it be mounted outdoors?

It depends on the series and the manufacturer's instructions. For the system APX 20 kWh The HV Battery 2.0 datasheet specifies an IP66 protection rating and an operating temperature of -20°C to 55°C. The manufacturer recommends floor mounting. For sets HOPE, ALP i ARK We do not provide the degree of protection or temperature range; please check these values ​​in the manufacturer's data sheet.

How much does a magazine weigh 20 kWh and what are its dimensions?

System APX 20 kWh The HV Battery 2.0 weighs 188,2 kg and has dimensions of 590 × 1,220 × 255 mm, according to the manufacturer's data sheet. The master module weighs 51 kg, and each of the three battery modules weighs 45 kg. For the sets HOPE, ALP i ARK We do not provide weight or dimensions; check these values ​​in the manufacturer's catalog card.

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About this article

The article was prepared by the editorial team PVGroup.plWe are a wholesaler of photovoltaics and energy storage Bytomia. We sell to installation companies in Poland and the European Union, and our in-store gross prices are also transparent to individual customers. Prices and availability are from our store. Technical parameters are from the manufacturer's catalog cards. Subsidy terms are from witgovernment market. More information: website about us and page contact.

We are not the operator of the PME 2 program. Binding information about the subsidy is provided by witgutter przydomowemagazyny.gov.plBefore purchasing, check the current price on the product card in the store.

Update Log

We will update this article when the terms of the PME 2 program change or when we receive a notice that the budget has been exhausted.

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