Solar Panel Installation in Pat Heung

By system size in kilowatts (kW), quoted as an installed price including panels, inverter, mounting, electrical work and grid paperwork. Batteries are a separate large line item. Compare quotes on price-per-kW with equivalent component tiers, not just the headline total.

Size to your daytime consumption and roof space: pull a year of electricity bills, and let the installer model self-consumption vs export. Typical homes land between 4kW and 10kW. Oversizing slightly is usually cheap at install time and future-proofs for an EV or heat pump.

Panels carry 25-30 year performance warranties (typically 85%+ output at year 25). Inverters are the consumable — expect one replacement around years 10-15. Quality mounting and cabling should match panel life; that's where cheap installs cut corners invisibly.

Anywhere from 3 to 12 years depending on your electricity price, sunshine, self-consumption share, and incentives. High daytime usage (working from home, pool pumps, EV charging) shortens payback dramatically because self-used solar displaces full retail-rate electricity.

Not to benefit — grid-tied solar without a battery is the fastest-payback configuration in most markets. Batteries add backup power and evening self-consumption but often double system cost. Decide battery separately on outage frequency and your tariff structure.

Mostly village-house owners in the New Territories and owners of low-rise buildings with roof rights — high-rise flat owners can't. The FiT premium rate is the economic engine: systems commonly pay back in 8-10 years on FiT income.