What you need to know
Yes—if the home has a compatible hybrid inverter, battery, safe grid isolation and a properly wired backup or essential-load circuit. Ordinary grid-tied solar normally shuts down during an outage for anti-islanding safety. Backup duration depends on usable battery capacity, state of charge and the appliances running.
Key takeaways
- Solar panels by themselves do not guarantee power during a blackout.
- Backup requires a system designed to isolate safely from the utility grid.
- Black start means a compatible system can establish a local supply without the grid, but capability must be confirmed for the exact equipment and wiring.
- Under Solar Rakyat Sabah, stored battery energy is for self-consumption and cannot be exported for credit.
01
Why does normal rooftop solar switch off?
A grid-tied inverter follows the utility supply. During an outage it must stop energising the connection so electricity cannot flow back into lines that workers may expect to be de-energised. This protection is called anti-islanding.
The result can surprise homeowners: the sun may be shining and the panels may be capable of generating, yet the house still has no usable solar power. Resilience must be designed into the system from the beginning or added through a compatible retrofit.
02
What equipment creates real backup?
A backup-ready design typically combines a hybrid inverter, compatible battery, protection and an isolated output feeding agreed circuits. When the grid fails, the system separates from the utility and supplies only the protected side of the installation.
- Hybrid inverter with a supported backup or EPS function.
- Battery approved for the inverter, firmware and communication protocol.
- Automatic or prescribed isolation and changeover arrangement.
- Dedicated essential-load distribution for selected appliances.
- Testing that proves safe operation before handover.
03
What does black start mean?
Black start is the ability of a compatible system to form a stable local electricity supply when the grid is absent. It is not a universal feature of every inverter-battery combination. Some systems need minimum battery charge, a specific wiring architecture or compatible firmware before they can restart.
A quotation should never promise black start from a brand name alone. Ask the installer to identify the exact inverter, battery model, switching arrangement, supported load and commissioning test.
04
How long will a home battery last?
A simple first estimate is usable battery energy divided by the average protected load. For example, 4.5 kWh of usable energy supporting an average 450 W load is roughly ten hours before allowing for system losses and changing loads. A kettle, water heater or air-conditioner can reduce runtime quickly.
Prioritise lighting, Wi-Fi, security, fans, refrigeration and selected sockets. Whole-home backup is possible in some designs but requires much more capacity, higher power output and careful load management.
Straight answers
Frequently asked questions
Will solar panels work during a Sabah blackout?+
A standard grid-tied system normally shuts down. Backup requires a compatible hybrid inverter, battery, isolation and protected circuit.
What is black start?+
It is the ability of a compatible inverter-battery system to establish local power without the grid. The exact equipment, state of charge, firmware and wiring must support it.
Can one 5.12 kWh battery power the whole house?+
Not necessarily. Usable energy and inverter output must be compared with the selected loads. High-power appliances can exceed the output limit or shorten runtime substantially.
Can battery electricity earn Solar Rakyat export credit?+
No. The programme states that stored battery energy is for self-consumption and cannot be exported to the grid.
Official and primary sources
Policy and product information can change. These were reviewed on 19 July 2026; confirm current eligibility and specifications before making a purchase decision.
