1. Types of solar panels
Almost every panel installed on an Australian roof today is monocrystalline silicon, but within that single category, there is a meaningful spread of cell technologies, form factors, and aesthetic options. The choice you make affects efficiency, low-light performance, warranty length, and, for many homeowners, what your roof actually looks like from the street.
2. Types of inverters
The inverter is the brain of the system, and the architecture you choose here is largely irreversible. String inverters are the default and the cheapest. Microinverters and DC optimisers solve shading problems at higher cost. Hybrid inverters build in battery readiness from day one and are increasingly the sensible default for new installs, even when a battery is not in the original budget.
3. Types of batteries
Three axes distinguish residential battery products today: chemistry, coupling architecture, and backup capability. Lithium iron phosphate (LFP) chemistry has effectively replaced older NMC chemistry in new home batteries because it is safer and longer-lasting. AC-coupling and DC-coupling each have trade-offs that depend on your existing inverter. And not every battery on the market actually keeps the lights on during a blackout. That capability is a separate, often expensive, option.
4. System architectures
Above the level of individual components, your system itself takes one of three broad architectures, and the choice between them shapes everything from upfront cost to what happens when the grid goes down. Most Australian homes installed today are grid-tied or hybrid; off-grid is a specialist scenario for rural properties or remote locations.
5. Specialty and emerging types
A small but growing category of solar products sits outside the mainstream three-component model. These include plug-in balcony solar (popular in Europe and beginning to land in Australia), solar carports and pergolas, vehicle-to-home (V2H) charging, and community-scale Virtual Power Plants (VPPs) that orchestrate batteries across thousands of homes. They are worth understanding even if they do not fit your current install. Many will be mainstream within five years.
For sizing once you have settled on the types you want, see What solar & battery size do I need?. For brand-level recommendations within each type, see What brands of solar & batteries are there?.
