String inverters, microinverters, or DC optimisers for your Perth roof? Unshaded north-facing roofs suit string inverters (Fronius, Sungrow). Shaded or multi-orientation roofs need microinverters (Enphase) or optimisers (SolarEdge). Cost comparison and decision guide.

Solar panels don’t stop working after 25 years — they still produce 80-85% of original output. Perth homeowners with ageing systems have three options: keep them running, upgrade to newer high-efficiency panels, or add a battery. Degradation rates, when upgrading makes sense, and panel recycling in Australia.

Quick answer: The WA Residential Battery Scheme takes up to $1,300 off a home battery for Synergy customers and up to $3,800 for Horizon Power customers ($130 or $380 per kWh, capped at 10 kWh). You qualify if you’re a permanent resident aged 18+, your WA home is owner-occupied, rented with the landlord’s written consent,…

In-house vs subcontracted solar electricians: why it matters for quality, warranty, and accountability. How to verify your installer uses in-house teams, the warranty problem with subcontractors, and what to ask before signing.

Regional WA gets equal or higher sunshine than Perth. Horizon Power customers access up to $3,800 in battery rebates vs $1,300 in metro. Sun hours by town (Kalgoorlie +11%, Carnarvon +21%), Horizon Power vs Synergy differences, and off-grid solar economics for farms and stations.

As a rough guide, adding a battery to existing solar in Perth costs about $9,500-$18,000 before rebates. After combined federal and WA rebates, a 10kWh battery costs roughly $5,500-$9,000. Battery retrofit costs, compatibility checklist and an ROI calculation showing a 4.8-7.9 year payback.

How to compare solar quotes in Perth properly. Check panel brand, inverter model, workmanship warranty, in-house vs subcontracted electricians, and what’s included. The 7 things every quote must include plus a printable comparison checklist.

Quick Answer: Clean solar panels from the ground on a cool morning, using a soft brush on an extension pole and a garden hose at normal pressure. Never climb onto the roof, never use a pressure washer, and never use harsh chemicals or abrasive pads. In Perth, panels usually need a clean after the long…

Regional WA homeowners on Horizon Power can access roughly $8,300–$8,500 in combined solar and battery incentives in 2026 — including a $3,800 state battery rebate (nearly 3x metro). Learn about Smart Connect Solar requirements, Community Wave VPP, off-grid considerations, and what to look for in a regional installer.

Choosing the wrong commercial solar installer costs more than the quote. Check these 7 things: SAA accreditation, NETCC Approved Seller status, workmanship warranty length, in-house vs subcontracted electricians, aftercare support, financing options, and price matching. Full checklist for Perth businesses.