Most people looking at a Sigenergy system have already decided they want storage and now want to know whether this one is worth it. Bolton EC installs Sigenergy battery, inverter and EV charging equipment for homes across the Perth metro area, and it is the system we work with most. Every installation is completed under electrical contractor licence EC 15905.
Sigenergy builds its equipment as a stack rather than as separate boxes from separate brands. The inverter, the battery modules and the EV charging side share one design, one gateway and one app, so the parts talk to each other instead of being wired together and hoped for. In practice that means solar goes to the house first, then to the battery, then to the car, and the system decides the order based on how you have set it up.
The battery is modular. You start at a capacity that suits the household and stack more modules later if the load grows, which matters if an electric vehicle or a heat pump is on the horizon. The same stack can also feed a Sigenergy EV charger, so the car charges from stored solar in the evening rather than from the grid.
Backup is set at design stage. The gateway decides which circuits stay live in an outage, and those circuits have to be identified and wired before commissioning, not afterwards.
Where a Sigenergy stack is not the best fit, we quote Goodwe as the mid range alternative. Both sit alongside our wider solar battery installation work, and the panel side is covered under solar panel installation.
Want it sized properly?
Homeowners across the Perth suburbs we service use Bolton EC for solar, storage and general electrical work.
Most residential installs run over one to two days on site, depending on the switchboard and the backup wiring.
The switchboard is the part people do not expect. A board that is full, or one still running ceramic fuses, usually needs a switchboard upgrade before a battery and backup gateway can be connected safely. We check that at the assessment so it is in the quote rather than sprung on you mid job.
Ready to talk it through?
Size the battery around the power you use after the sun goes down, not around the size of your array. A household that cooks, runs air conditioning and charges a car in the evening needs more stored capacity than a household that is out until 7pm and then watches television.
| What to check | Points to a smaller stack | Points to a larger stack |
|---|---|---|
| Evening and overnight use | Low load after dark | Air conditioning, pool, cooking at night |
| Existing solar array | Modest array, little surplus | Large array exporting most days |
| Electric vehicle | None planned | Charging at home now or soon |
| Backup priority | A few essential circuits | Most of the house kept running |
Because the battery is modular, starting at a sensible capacity and adding a module later is a legitimate plan rather than a compromise. What is worth getting right up front is the inverter and the gateway, since those set the ceiling for everything added afterwards.
There are homes we would not put one on, and it is fairer to say that during the quote than after the deposit.
The Sigenergy app is where the system becomes useful. It shows generation, what the house is drawing, battery state of charge and what the car is taking, and it is where charge and discharge behaviour is set. We set those parameters at commissioning against how your household actually runs, then show you how to change them.
Warranty terms come from Sigenergy and are supplied with your system documentation. Bolton EC handles the electrical workmanship and remains your first call if something is not behaving, rather than sending you to a call queue in another state.
A battery is a long-term piece of equipment on the side of your house, and the install decides how well it runs for the next decade. Bolton EC will look at your array, your switchboard and your evening usage, then put a scope and a free quote in writing under licence EC 15905.
Want the numbers on your own roof?
Yes, in most cases. The battery is added with a hybrid inverter, and where the existing inverter cannot support storage it is replaced as part of the job. The current array usually stays exactly where it is.
Sometimes. A full board, an old fuse board or a board without room for the backup gateway needs upgrading first. Bolton EC checks the switchboard at the site assessment so it is priced in the quote.
It can, on the circuits nominated at design stage. The gateway isolates the house from the grid and runs the selected circuits from the battery, so those circuits need to be chosen before installation.
It depends on capacity, whether the inverter is being replaced, EV charging and any switchboard work. Bolton EC quotes each system after a site assessment, and the quote is free.
Yes. The charger draws from solar and from stored battery capacity, and the priority order is set in the app. It suits households that are out during the day and charge at night.
Bolton EC specialises in Sigenergy installations as a licensed electrical contractor, EC 15905. Equipment warranties are provided by the manufacturer with your system documentation.
