Battery Storage Solutions

Store renewable energy, reduce electricity costs, and gain energy independence with advanced battery storage systems designed for Irish homes and businesses.

SEAI Grants Available
Backup Power Security
Peak/Off-Peak Savings

Battery Storage in Ireland

Solar Integration

Store excess solar energy generated during the day for use during evening peak hours when electricity rates are highest.

Grid Independence

Reduce reliance on the national grid and protect your home from power outages increasingly common in Irish weather.

Backup Power

Keep essential appliances running during power cuts. Critical for rural areas and homes with medical equipment.

Cost Savings

Take advantage of Time of Use tariffs by charging at night rates and using stored power during expensive peak hours.

SEAI Battery Storage Grants

Grant Details

Base Grant (5kWh system)
€1,000
Maximum Grant Available
€2,400
Additional Support: Battery grants can be combined with solar PV grants for maximum savings on your renewable energy investment.

Eligibility Requirements

  • Property Type: Owner-occupied homes built before 2021
  • System Size: Minimum 5kWh storage capacity
  • Installer: Must use SEAI-registered contractor
  • BER: Property must have valid Building Energy Rating

How to Apply

  1. Get quotes from SEAI-registered installers
  2. Submit application through SEAI portal
  3. Receive approval before installation begins
  4. Complete installation with registered contractor
  5. Submit completion documents for grant payment
Visit SEAI Grant Portal

Benefits for Irish Homes

Time of Use Tariff Optimization

Irish energy suppliers offer significant savings through Time of Use (ToU) tariffs. Battery storage allows you to:

  • Charge batteries during night rates (as low as 9c/kWh)
  • Use stored power during peak hours (up to 45c/kWh)
  • Save up to €600 annually on electricity bills
  • Maximize returns from solar PV systems
Typical Savings: A 10kWh battery system can reduce annual electricity costs by 40-60% when combined with solar PV and ToU tariffs.

Backup Power During Outages

Irish weather can cause power disruptions. Battery backup provides:

  • Automatic switchover during grid failures
  • Power for essential appliances (fridge, heating, medical devices)
  • Protection for home office and remote work setups
  • Peace of mind during storm season
Note: Backup capacity depends on battery size and selected appliances. A 10kWh system can typically power essential loads for 8-24 hours.

Maximizing Solar Investment

Without storage, excess solar energy is exported to the grid at low rates. Battery storage enables:

  • Self-consumption rates of 70-90% (vs. 30-40% without storage)
  • Store midday solar generation for evening use
  • Reduce dependence on grid electricity
  • Faster return on investment (ROI typically 7-10 years)
30-40%
Solar self-use without battery
70-90%
Solar self-use with battery

Future-Proofing for EV Charging

As electric vehicle adoption grows in Ireland, battery storage becomes even more valuable:

  • Charge EVs with stored solar energy
  • Avoid expensive peak-rate charging
  • Use night-rate electricity to charge both battery and EV
  • Manage total household load efficiently
Smart Integration: Modern battery systems can intelligently balance solar generation, home consumption, battery charging, and EV charging needs.

Types of Battery Systems

Battery Technologies

Lithium-Ion (Most Common)

The dominant technology for residential battery storage in Ireland.

Advantages:
  • High energy density (compact size)
  • Long lifespan (10-15 years)
  • High efficiency (90-95%)
  • Low maintenance
  • Proven technology
Considerations:
  • Higher initial cost
  • Temperature sensitive (needs climate control)
  • Degradation over time (typically 80% capacity after 10 years)
Alternative Technologies

Emerging options becoming available in the Irish market.

Lithium Iron Phosphate (LFP):
  • Enhanced safety profile
  • Longer cycle life
  • Better performance in Irish climate
Saltwater Batteries:
  • Non-toxic and recyclable
  • No fire risk
  • Limited availability
Flow Batteries:
  • Unlimited deep discharge cycles
  • Very long lifespan
  • Currently more expensive

Sizing Considerations for Irish Homes

Choosing the right battery size depends on your energy consumption, solar generation, and budget. Here's a guide for typical Irish households:

Small Household
5-7 kWh
1-2 bedroom homes
  • Daily consumption: 10-15 kWh
  • Covers evening peak usage
  • Suitable for: Apartments, small houses
  • Typical cost: €4,000-€6,000 (before grants)
Average Household
10-13 kWh
3 bedroom homes
  • Daily consumption: 15-25 kWh
  • Optimal for solar + storage
  • Suitable for: Semi-detached, terraced houses
  • Typical cost: €7,000-€10,000 (before grants)
Most Popular Choice
Large Household
15+ kWh
4+ bedroom homes
  • Daily consumption: 25+ kWh
  • Full energy independence potential
  • Suitable for: Detached houses, EV owners
  • Typical cost: €11,000-€15,000 (before grants)
Sizing Tip: A good rule of thumb is to size your battery to store 50-70% of your daily electricity consumption, or to match your solar PV system's daily generation capacity.

Leading Brands Available in Ireland

These reputable brands are widely available through SEAI-registered installers across Ireland:

Tesla Powerwall

Capacity: 13.5 kWh

  • Industry-leading warranty (10 years)
  • Integrated inverter
  • Sleek design
  • Excellent app integration
Huawei LUNA

Capacity: 5-15 kWh (modular)

  • Modular expandable design
  • Compact installation
  • Excellent efficiency
  • Competitive pricing
GivEnergy

Capacity: 9.5-19.5 kWh

  • Great value for money
  • Flexible configuration
  • Strong Irish presence
  • Reliable performance
Pylontech

Capacity: 2.4-14.4 kWh (modular)

  • High-quality LFP cells
  • Modular scalability
  • Long cycle life
  • Wide compatibility
Solax Triple Power

Capacity: 6.3-25.2 kWh

  • All-in-one solution
  • Advanced backup features
  • Irish market leader
  • Excellent support network
BYD Battery-Box

Capacity: 2.5-22.1 kWh

  • Premium LFP technology
  • Highly modular
  • Excellent safety record
  • Proven reliability

Installation and Maintenance

Installation Process
  1. Site Survey: Qualified installer assesses your property, electrical setup, and mounting location (indoor or outdoor)
  2. System Design: Battery size, inverter type, and backup circuits are specified based on your needs
  3. Installation: Typically takes 1-2 days. Includes battery mounting, electrical connections, and system commissioning
  4. Testing & Commissioning: Full system testing ensures safe operation and optimal performance
  5. Handover & Training: Installer demonstrates system operation, monitoring app, and maintenance requirements
Important: Always use SEAI-registered installers to ensure quality installation, warranty protection, and grant eligibility.
Maintenance Requirements

Battery storage systems require minimal maintenance, but regular checks ensure optimal performance:

Regular Checks (Monthly):
  • Monitor performance via app
  • Check for warning messages
  • Verify backup function (if applicable)
  • Ensure proper ventilation around unit
Annual Service:
  • Professional inspection by installer
  • Electrical connections check
  • Software updates
  • Performance optimization
Typical Warranties:
  • Product Warranty: 10 years (hardware defects)
  • Performance Warranty: 10 years (typically 70-80% capacity retention)
  • Workmanship: 1-2 years (installer)
Lifespan
10-15 years typical
Cycle Life
6,000-10,000 cycles
Efficiency
90-95% round-trip

Latest Battery Storage News

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