Already got solar panels in Horsham?
Add battery storage and start saving an extra £300–£500 per year. Free assessment in under 24 hours.
Retrofit Battery Storage to Your Existing Solar System in Horsham
Green Earth Sussex specialises in retrofitting battery storage systems to existing solar PV installations throughout Horsham and Sussex. If you already have solar panels but no battery, adding storage allows you to use more of your own solar energy, reduce grid consumption by up to 80%, and gain backup power during outages.
Battery retrofits are compatible with most existing solar systems, regardless of age or manufacturer. We offer both AC-coupled and DC-coupled battery solutions, depending on your existing inverter and system configuration. Our expert team assesses your current setup, recommends the best battery option, and handles the complete installation with minimal disruption.
Searching for battery retrofit Horsham, add battery to solar Horsham, or solar battery storage near me Horsham? Green Earth Sussex is your local NAPIT-approved team for battery storage retrofits across Sussex.
AC & DC Coupled
Battery Retrofits Horsham
80%+
Solar Self-Consumption
£500+
Extra Annual Savings
10yr
Battery Warranty
1 Day
Typical Install Time
AC-Coupled vs DC-Coupled Battery Retrofits in Horsham
Not sure which battery coupling type is right for your Horsham solar system? Here is how they compare.
AC-Coupled Battery Retrofit
The most flexible option for Horsham homes with existing solar. The battery connects via AC to your existing inverter — no changes needed to your solar system.
- Compatible with ANY existing solar inverter
- No changes to your current solar system
- Works with older installations
- Tesla Powerwall, GivEnergy AC options
- Simple, fast installation (usually 1 day)
- Backup power capability included
DC-Coupled Battery Retrofit
Higher efficiency option for Horsham properties where we replace your existing inverter with a hybrid unit. More efficient but requires inverter replacement.
- Higher efficiency — less conversion loss
- Replaces existing inverter with hybrid unit
- GivEnergy, Solax, and other hybrid systems
- Better for new or recent solar systems
- Modular battery capacity expansion
- Advanced energy management features
AC-Coupled Retrofits
Compatible with any existing solar inverter — no changes to your current system required
DC-Coupled Options
Higher efficiency DC-coupled systems with hybrid inverter replacement where suitable
Maximize Solar Savings
Store surplus solar energy for evening use and reduce grid electricity bills by up to 80%
Backup Power
Add backup power capability to keep essential circuits running during outages
System Assessment
Free assessment of your existing solar system and battery sizing recommendations
Smart Monitoring
Monitor and control your battery via smartphone app with real-time energy data
How Battery Retrofits Work in Horsham
Our streamlined process makes adding battery storage to your solar system in Horsham simple and stress-free — most retrofits complete in a single day.
Free Assessment
We assess your existing Horsham solar system, inverter, and energy needs at no cost
Battery Design
We recommend the best battery size, brand, and coupling type for your system
Quote & Approval
Clear itemised quote — no hidden costs. Choose your battery and confirm
Installation
Our Horsham team completes most battery retrofits in a single day with minimal disruption
Go Live!
System commissioned, app set up, and backup tested — start storing energy immediately
How Much Does a Battery Retrofit Cost Near Me in Horsham?
Transparent battery retrofit pricing for Horsham homeowners. All prices include supply, installation, and full commissioning.
| Battery System | Capacity | Typical Cost | Extra Savings/yr | Payback |
|---|---|---|---|---|
| Entry AC Battery | 5–8 kWh | £2,500 – £4,500 | ~£300–£450 | 6–10 years |
| Mid-Range AC Battery | 10–13 kWh | £4,500 – £7,000 | ~£450–£700 | 6–9 years |
| Tesla Powerwall 3 | 13.5 kWh | £7,500 – £9,500 | ~£600–£900 | 7–10 years |
| DC-Coupled Hybrid | 5–10 kWh | £4,000 – £7,500 | ~£400–£650 | 6–9 years |
| Expandable Modular | 10–20 kWh | £6,000 – £12,000 | ~£500–£1,000 | 6–10 years |
Prices are indicative for Horsham properties. Final cost depends on existing inverter, cable runs, and battery brand choice. Free no-obligation assessment available.
Get a Free Battery Retrofit Assessment in Horsham
Searching for battery retrofit near me Horsham? Fill in our quick form and a local Horsham battery expert will assess your system and provide a tailored quote within 24 hours.
Get a Free Quote for Battery Retrofits Horsham
Request your free, no-obligation quote today. Our NAPIT approved electricians cover all of Sussex and the surrounding areas. We'll get back to you within 2 hours during business hours.
NAPIT Accredited
All work fully certified to BS 7671 standards
Fast Response
We respond within 2 hours during business hours
Transparent Pricing
Fixed-price quotes with no hidden fees
Fully Insured
All work guaranteed and comprehensively insured
Prefer to call or message?
Request Your Free Quote
We'll respond within 2 hours during business hours.
Our Battery Retrofit Services in Horsham
Whether you need AC-coupled or DC-coupled battery storage in Horsham, we cover every aspect of your retrofit from assessment to commissioning.
AC-Coupled Battery Retrofit Horsham
- Compatible with any existing solar inverter in Horsham
- No changes required to existing solar system
- Tesla Powerwall, GivEnergy, and other AC batteries
- Backup power capability included
- Works with older solar installations
- Simple installation with minimal disruption
DC-Coupled Battery Retrofit Horsham
- Higher efficiency DC-coupled battery systems
- Hybrid inverter replacement for DC coupling
- GivEnergy, Solax, and other hybrid systems
- Reduced conversion losses for better performance
- Modular battery capacity expansion
- Advanced energy management features
System Assessment & Design
- Free assessment of existing solar system in Horsham
- Inverter compatibility checks
- Battery sizing based on energy usage
- AC vs DC coupling recommendations
- ROI calculations and savings estimates
- Backup power requirements planning
Installation & Commissioning
- Professional installation by certified electricians
- Integration with existing solar system
- Backup power circuit configuration
- Smart monitoring system setup
- Full system testing and commissioning
- DNO notification and compliance certification
Premium Battery Brands We Install in Horsham
We only install battery storage systems from manufacturers we trust — all backed by long warranties and proven reliability in UK conditions.
Tesla Powerwall
Best Overall
10yr Warranty
GivEnergy
Best Value
10yr Warranty
SolarEdge
Best Monitoring
10yr Warranty
SolaX Power
Best DC Hybrid
10yr Warranty
Solis
Budget Friendly
10yr Warranty
BYD
Commercial Scale
10yr Warranty
Solar Panel Installation Horsham
Do not have solar yet? Pair your battery storage Horsham with a new solar PV installation for the complete energy-independent home. MCS-certified installations with 25-year warranties.
Most Horsham homeowners see payback within 7–10 years on a combined solar + battery system, with annual savings of £1,000+.
Explore Solar PanelsSolar + Battery + EV Charger Horsham
Complete your green home setup with a smart EV charger that uses your stored battery energy to charge your electric vehicle. Zappi and Ohme chargers available.
Our Horsham team handles solar, battery, and EV charger installation in a single coordinated project, ensuring everything works together perfectly.
Explore EV ChargersWhy Choose Green Earth Sussex in Horsham?
When you search for battery retrofit near me in Horsham, here is why homeowners choose us as their local battery storage installer.
Expert Integration
Seamless battery integration with any existing solar system in Horsham — AC or DC coupled.
Leading Brands
Tesla Powerwall, GivEnergy, Solax and other premium battery systems with long warranties.
Truly Local Sussex Team
Based in Brighton — our engineers know Horsham properties, roofing, and electrical systems inside out.
NAPIT Approved
Fully NAPIT-registered for safe, compliant battery storage installations with full certification.
5-Star Service Record
Hundreds of verified reviews from Horsham and Sussex homeowners who trust us with their battery retrofits.
Real Savings Data
We provide honest ROI calculations and savings estimates based on your actual energy usage and solar generation.
Battery Retrofit Horsham — FAQs
Common questions about adding battery storage to existing solar systems in Horsham.
Can I add a battery to my existing solar panels in Horsham?
How much does a battery retrofit cost in Horsham?
Will a battery retrofit affect my existing solar system?
How much extra will I save with a battery in Horsham?
How long does a battery retrofit take in Horsham?
What battery brands do you recommend for Horsham homes?
Do battery retrofits come with backup power?
Can I expand my battery capacity later?
Related Renewable Energy Services in Horsham
Explore our full range of green energy services for Horsham — all delivered by your local NAPIT-approved team.
Battery Retrofit Services Across Sussex
We are your local battery retrofit installers across Sussex. Select your area for local battery storage information, pricing, and a free assessment.
Ready to Add Battery Storage in Horsham?
Get your free, no-obligation battery retrofit assessment today. Our NAPIT-approved Horsham team will assess your solar system and provide a clear, fixed-price quote.