Off-Grid Solar Systems
15kW off grid solar system
15kW system with 26kWh storage and dual-inverter backup, supporting high-demand all-electric households.
$63,000–$69,400
after rebate
15kW Fully-Electric Family Off Grid Kit
A 15 kW off-grid solar system suits families of four to five people, powering fully electric homes with heat pump water heating. Both Deye/Pylontech and Sigenergy options offer expandable battery storage and solar panel arrays, with Sigenergy providing independent unit operation and EV charging integration capabilities.
BEST FOR
4-5 Person All-Electric Household, Small Family with Electric Vehicle, Homeowners Seeking Redundant Power Systems, Regional Property Owners for All-Electric Living
Summary
15kW off-grid system for 4-5 person all-electric homes. Sigenergy (26kWh battery, 20kW solar expansion) or Deye/Pylontech (18kWh battery, 18kW solar expansion) configurations. 12kW dual inverter. Heat-pump hot water recommended.
15kW Off-Grid Specs
Max Occupancy
5 People
Home
4 Beds
Daily Demand Target
28.125
Inverter
2 × 10 kW
Battery
54–56.1
SOLAR Arrary
36.6–37.1
After Rebate
$63,000–$69,400
15kW off grid solar systems
15kW off grid solar systems A 15 kW system is a suitable choice for a household with 4-5 people, providing power for an all-electric home. The only recommendation is to use a heat pump for hot water.
Deye/Pylontech 15kW System extensions: Batteries easy to add at a later stage Solar panels array can be extended up to 18kW
Sigenergy 15kW System inverter/battery unit operates independently. In the event of a failure in any unit, the others will continue to provide power without interruption.
Sigenergy Possible Extension: Batteries easy to add at a later stage Solar panels array can be extended up to 20kW DC charger for Electric vehicle can be integrated into the system
System Information
Recommended generator size: 12kVa or bigger
2x 6kW Sigenergy or Deye inverters. 12kW capacity —Both with 10 years warranty and Remote monitoring
Instant Recommendation & Estimate
If you need a second opinion or your setup is more complex, Talk to Fred About your System first.
That's exactly what we're here for. Tell us about your home, your site, and how you live - we'll recommend the system that fits.
REgional Victoria OFF-GRID INSTALLATION
100Up Designed for Off the Grid Living.Solar, Inverter and Battery Sized Right
Based in Ballarat, Fred and the team design and install off-grid solar systems across regional Victoria.
Designed for Full Occupancy
We size for the home and its realistic future occupancy, and how you plan to use power today & in the future.
Built to Work through Worse Case Winters
We oversize arrays for dark Ballarat winter weeks, capturing enough energy in short sun windows to recover batteries fast.
Battery to Get Through Low Solar Days
48-Hour Battery Autonomy. Battery storage is designed to carry the household through consecutive low-production days.
Redundancy Where Reliability Demands It
Where practical, dual inverters and distributed battery storage reduce single points of failure.
REgional Victoria OFF-GRID INSTALLATION
Off-Grid Solar, Installed Across Regional Victoria
Based in Ballarat, Fred and the team design and install off-grid solar systems across regional Victoria.
Ballarat
Bendigo
Geelong
Grampians
Castlemaine
Fred installed our solar. Very honest very reliable. He goes above and beyond. Tries his best to help. Does a great job. I recommend.
Dino Papa
Verify reviewQuotation & installation process. They have been unfailingly helpful and never failed to communicate pro-actively & effectively.
Andrew Webb
Verify reviewFred did a great job was extremely patient with the slow build Clean and tidy Explained what he was doing along the process
Darcy Joynson
Verify review
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100% OFF GRID
We Design, Supply & Install Off Grid Systems
Access to Government Rebates
Expand and Upgrade Ready
Remote Monitoring & Support
Complete System Documentation
Proven Components & Accredited Installers
Off‑grid systems installed by 100up 's trusted SAA‑accredited electricians using CEC‑approved products.
15kW Off-Grid
Max Occupancy
5 People
Home
4 Beds
Daily Demand Target
28.125
Inverter
2 × 10 kW
Battery
54–56.1
SOLAR Arrary
36.6–37.1
After Rebate
$63,000–$69,400
Pricing Subject to Site Inspection, Roof & Ground SURVEY
10+ Years Precision Installation
Ready to Plan your15kW off grid solar system
Call us direct on 1300 489 152 or send a text to 0400 092 621 — real advice from real off-grid solar installers.
Local Ballarat Team
10 years in OFF GRID SOLAR