Solar + inverter + EV charger + this battery + install
~€6,500
− €1,800 SEAI grant~€4,700 net
🧠 Step 5 — Smart Energy adds ~€150–400
Maximise every kWh
EMS coordinates solar, battery and loads — extra 10–25% self-consumption and smarter time-of-use scheduling.
Estimates based on a 4kWp system (10 × 430W panels + avg hybrid inverter + Type 2 EV charger + this battery). SEAI grant covers solar components only — apply at seai.ie before installation.
Growatt · Residential Battery · Ireland 2026
Growatt ARK 2.5H-A1 (Stackable) — Ireland 2026
Entry-level modular LFP — start from 2.56 kWh, expand to 15.3 kWh with Growatt MIN-XH
Budget-conscious homeowners who already have or plan to install a Growatt MIN-XH hybrid inverter — the most affordable entry point to LFP battery storage in Ireland
2.56kWh2.5kW output10-yr warranty6,000 cyclesIP20LFP📦 ModularWall mount
⚙️ Technical Specifications
Battery chemistry
LFP (Lithium Iron Phosphate)
Capacity
2.56kWh
Usable capacity
2.56kWh
Continuous power
2.5kW
Round-trip efficiency
95%
Cycle life
6,000 cycles
Warranty
10 years (70% capacity)
IP rating
IP20
Install type
indoor
Wall mount
✓ Yes
Backup power
✗ No backup
Monitoring
ShinePhone (Growatt App)
Expandable
✓ 2.56kWh → 15.36kWh
💰 Pricing & system cost
🔋 This battery — Step 4 of system
~€1,200 supply price
Per 2.56kWh module. A 5.12kWh system (2 × modules) costs ~€2,400. Growatt MIN-XH inverter required separately.
You also need before this battery
☀️ Solar panels (avg 10 × 430W)~€1,650
⚡ Compatible hybrid inverter~€950–1,800
🏗️ Installation + mounting + labour~€2,000
− €1,800 SEAI grant (solar components)savings
Key highlights
💶
Ireland's lowest-cost LFP entry point
At ~€1,200 per 2.56kWh module, the Growatt ARK 2.5H-A1 is the most affordable way to add LFP battery storage to an Irish home — start with one module and add more as your budget grows.
📦
Stack up to 6 modules — 15.36kWh maximum
Each additional ARK 2.5H-A1 module adds 2.56kWh. Start with a single module to cover evening essentials and expand year on year without replacing any hardware.
🔋
LFP chemistry — 6,000 cycles, 10-year warranty
Despite being the most affordable battery in this directory, the ARK 2.5H-A1 uses the same proven LFP chemistry as premium options — 6,000 cycles at full depth of discharge, 10-year product warranty.
🚗 Pair with an electric car — charge from stored solar
A home battery and an EV are the most powerful combination for Irish homeowners. Your battery stores surplus solar during the day — your EV charges from it overnight at near-zero cost. A 10kWh battery fully charges most EVs from stored solar alone. See the full EV Vehicle Directory — 205+ electric vehicles available in Ireland.
🔋 How your battery makes an EV even cheaper to run
🌙 Night-rate charge
€0.10/kWh
Pinergy / Energia night
🚗 Cost per 100km
~€1.50
average EV efficiency
vs petrol (€1.80/L)
~€14/100km
petrol equivalent cost
A home battery lets you load up on cheap off-peak electricity overnight, then charge your EV from stored power during the day — all at the night rate. Combined with a solar system, your EV can charge for near-zero cost from stored surplus solar. The myenergi Zappi Eco+ mode charges only from surplus solar before drawing from the battery.
View myenergi Zappi →
Featured electric cars — most popular in Ireland 2026
Indoor only (IP20) — not suitable for outdoor or unheated locations
Only compatible with Growatt MIN-XH hybrid inverters
No backup power capability — grid-tied only
Limited discharge power (2.5kW per module) vs premium alternatives
Low brand recognition vs Huawei, BYD or Pylontech in Ireland
📊 Battery ROI — estimated payback for Irish homes
Estimated annual savings and payback period for the Growatt ARK 2.5H-A1 (Stackable) at ~€1,200. Based on electricity rate of €0.33–0.35/kWh (mid-range Irish residential 2026). Assumes battery shifts solar-generated electricity from daytime export to evening self-consumption.
Household type
Evening import
Est. kWh saved
Annual saving
Payback
Low usage (single/couple)
3,000 kWh/yr
~934 kWh/yr
~€308/yr
~3.9 yrs
Average home (family of 4)
4,500 kWh/yr
~934 kWh/yr
~€308/yr
~3.9 yrs
Higher usage (5+ / EV / heat pump)
6,000 kWh/yr
~934 kWh/yr
~€327/yr
~3.7 yrs
Indicative only. Actual savings depend on electricity tariff, panel system size, usage profile, and seasonal generation. An energy management system (EMS) can improve self-consumption by a further 10–25%. Get a site-specific financial model from your installer.
⚡ Compatible inverters
The ARK 2.5H-A1 (Stackable) is compatible with the following inverters. Click any inverter to see full specifications, pricing and system cost estimates. See the Solar Inverter Directory to compare all 15 inverters available in Ireland.
⚠️ Ecosystem note: The ARK 2.5H-A1 (Stackable) is only compatible with Growatt inverters. If you are considering a different inverter brand, please check the Battery Directory for a battery compatible with your inverter.
☀️ Compatible solar panels
The ARK 2.5H-A1 (Stackable) is compatible with all solar panel brands available in Ireland — any panel that works with your compatible inverter will work with this battery. See the Solar Panel Directory to compare all 13 panels with specifications, pricing and SEAI eligibility.
Compatibility is via the inverter - ensure your chosen inverter is compatible with both your panels and this battery. All panel links above go to their individual review page.
🔧 Complete your solar system
The ARK 2.5H-A1 (Stackable) is Step 4 - you need solar panels and a compatible inverter before it, and an energy management system after it to get the maximum return from every kWh.
💡 Most popular Irish combination in 2026: LONGi Hi-MO 6 panels + compatible hybrid inverter + Growatt ARK 2.5H-A1 (Stackable) — installed by a SEAI-registered contractor, managed by a smart energy controller.
🧠 Energy Management Systems — get more from your battery
A battery stores your solar energy — an energy management system makes sure it's used at the right time. EMS devices can reduce grid import by an additional 10–25% beyond the battery alone by coordinating solar generation, battery charge/discharge, hot water heating and EV charging. See the full Smart Energy Directory for all EMS products available in Ireland.
💡 Why add an EMS to your battery system? Without an EMS, a battery charges and discharges on simple rules (charge during solar generation, discharge at night). An EMS adds smart scheduling — learning your consumption patterns, responding to time-of-use tariffs (e.g. Electricity Ireland Smart), and diverting surplus to hot water or EV charging before exporting to the grid.
🌡️ Pair with a heat pump — the night-rate combination
A solar battery and a heat pump are the most powerful combination for cutting your heating bill. Your battery charges overnight at the cheap night rate — then your heat pump runs from stored electricity during the day, delivering heat at a fraction of the cost of gas or oil. Browse all 18 heat pumps →
🔋 Battery + heat pump: the maths that make it compelling
🌙 Night-rate electricity
€0.10/kWh
Pinergy / Energia night
⚡ Heat pump COP
4.5×
4.5 kWh heat per 1 kWh electric
🔥 Effective heat cost
€0.022/kWh
vs gas ~€0.063/kWh
💰 SEAI heat pump grant
€12,500
max for fossil fuel switchers
At a SCOP of 4.5, every €1 of night-rate electricity stored in your battery produces €4.5 worth of heat from the heat pump. That makes battery-powered heat pump operation 3× cheaper per kWh of heat than a gas boiler at today's rates. Stack the SEAI battery grant with the up to €12,500 heat pump grant for maximum combined subsidy.
Popular heat pumps in Ireland 2026 — SEAI grant eligible
🔌 Pair with an EV charger — charge your car from stored solar
A home battery and an EV charger complete your home energy system. Store surplus solar in your battery, then draw it back through a smart charger to power your car — maximising self-consumption and cutting your fuel bill to near zero.
🔌 Battery + EV charger: the perfect home energy pair
Your battery stores surplus solar during the day. A smart solar-compatible charger like the myenergi Zappi draws from your battery first — so your car charges on energy you generated for free. At night, the battery tops up on cheap off-peak rates (as low as €0.10/kWh) for the next day's driving. SEAI Home Charger Grant: €300 applies to eligible wallbox installations.
The Growatt ARK 2.5H-A1 (Stackable) is priced at approximately €1,200 for the 2.56kWh configuration. Per 2.56kWh module. A 5.12kWh system (2 × modules) costs ~€2,400. Growatt MIN-XH inverter required separately. Installed cost varies by county, property type, and whether this is a new solar installation or a retrofit. The SEAI Solar PV Home Grant (up to €1,800) applies to solar panel components when installed at the same time — get 3 quotes from SEAI-registered installers for an accurate all-in system price.
For a typical Irish home with €0.33/kWh electricity and a 4kWp solar system, the Growatt ARK 2.5H-A1 (Stackable) (2.56kWh usable) shifts approximately 701 kWh/year from grid import to self-consumed solar — saving around €247/year. At €1,200, the estimated battery-only payback is ~4.9 years. An energy management system (EMS) can improve self-consumption by a further 10–25%, shortening the payback period.
The Growatt ARK 2.5H-A1 (Stackable) carries a 10-year warranty that guarantees at least 70% of the original capacity remains after 10 years of normal use — the standard industry capacity retention guarantee. The warranty covers manufacturing defects and capacity degradation below the 70% threshold. Annual cycling beyond the rated 6,000 cycles, physical damage or installation errors are not covered. Always register the battery with Growatt at installation to activate the warranty.
LFP (Lithium Iron Phosphate) is now the dominant battery chemistry for Irish residential and commercial solar storage for good reasons. It is the safest chemistry — LFP cells have an extremely low thermal runaway risk compared to older NMC or NCA chemistries. It has a longer cycle life — the Growatt ARK 2.5H-A1 (Stackable) is rated for 6,000 cycles, equivalent to 16 years of daily cycling. LFP tolerates Ireland's variable temperatures better than NMC, and it handles deep daily discharge without the capacity fade that affects other chemistries. For Irish homeowners cycling the battery every day, LFP is the right choice.
No — the Growatt ARK 2.5H-A1 (Stackable) is a grid-tied battery only and does not provide backup power during a grid outage. When the grid goes down, the inverter disconnects for safety (anti-islanding protection) and the battery cannot supply household circuits. If backup power is important to you, consider the Huawei Luna2000 (full backup with SUN2000 inverter), BYD Battery-Box HVS (backup with compatible inverter), or Tesla Powerwall 3 (whole-home backup). Your installer can advise on the most cost-effective backup option for your system.
No — the Growatt ARK 2.5H-A1 (Stackable) uses proprietary communication protocols and is only compatible with Growatt inverters. It cannot be used with other inverter brands inverters. If you do not have or plan to install a Growatt inverter, see the Battery Directory to find a battery compatible with your inverter. Multi-inverter batteries like the Pylontech US3000C (Solis, Sungrow, GoodWe, SMA) or BYD Battery-Box (Fronius, SolarEdge, SMA) offer more flexibility.
Yes — the Growatt ARK 2.5H-A1 (Stackable) is modular and expandable from 2.56kWh to 15.36kWh in 3kWh increments, without replacing the inverter or rewiring the solar system. This is a significant advantage for homeowners who want to start with a smaller capacity and expand as their budget allows or as electricity prices change. Your installer can add modules at any point after initial installation — though it's worth having the mounting and wiring provisioned for expansion at the original installation to reduce future labour costs.
Not directly. The SEAI Solar PV Home Grant of up to €1,800 applies to the total installed cost of the solar PV system — panels, inverter, mounting hardware, cabling and labour. It does not cover battery storage as a standalone item. However, if battery storage is installed as part of a new solar system at the same time, the grant still applies to the solar components, and the overall system cost (including battery) is reduced by €1,800. Some homeowners maximise their panel and inverter specification under the grant, then use the savings to partially offset the battery cost. Always apply to SEAI and receive a Letter of Offer before installation begins.
The Growatt ARK 2.5H-A1 (Stackable) is rated for 6,000 charge/discharge cycles. At one full cycle per day — typical for a solar-charged battery in Ireland — this represents approximately 16 years of daily cycling before reaching end-of-life capacity (defined as capacity dropping below 70% of original). Most Irish homeowners cycle batteries to 60–80% depth per day rather than 100%, which extends effective lifespan further. The 10-year warranty provides protection during the early years. Budget for potential replacement at year 15–20 when modelling long-term system financials.
No — the ARK 2.5H-A1 uses proprietary communication protocols and is only compatible with Growatt MIN-XH hybrid inverters. It cannot be used with Huawei SUN2000, Sungrow SH, Solis RHI, GoodWe ET Plus, or any other hybrid inverter brand. If you do not have a Growatt inverter, consider Pylontech US3000C (compatible with Solis, Sungrow, GoodWe, SMA) or the Huawei Luna2000 (Huawei SUN2000 only).
No — the Growatt ARK 2.5H-A1 is a grid-tied battery only. It does not provide backup power during grid outages. The Growatt MIN-XH inverter it pairs with does not support island/backup mode in the standard residential configuration. If backup power is important to you, consider the Huawei Luna2000 (full backup), BYD HVS (backup with compatible inverter), or Enphase IQ Battery 10T (backup with IQ System Controller).
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More power to youTM.
🛒 Built for retail parks, offices & business premises
List your car park chargers as bookable assets — earn while you work
Your solar-and-battery-powered car park chargers can become a bookable revenue stream. EV drivers find your chargers in the app, see your energy rate — Pure Energy from stored solar — and book in advance. Automated check-in, check-out and notifications handle everything. Filter by charger type so Type 2, CCS, CHAdeMO and EHU spaces are always matched correctly.
☀️ Pure Energy🔄 Smart Energy🚀 Boost Energy
🅿️
QR code per bay
One unique QR code per charger or space — guests scan to book, check in and check out
🔋
Charger type filtering
Type 2, CCS, CHAdeMO, Type 1 and EHU — drivers filter to chargers that fit their vehicle
🔔
Check-in & check-out alerts
Automated notifications at session start and end — maximise charger utilisation across the day
