LAST UPDATED: MARCH 2026 · DATA: CLEAN ENERGY REGULATOR & STATE SOURCES
Forrestfield solar fact
Forrestfield sits at the foot of the Darling Range escarpment — the escarpment's white quartzite faces act as a natural solar reflector, adding reflected radiation that can increase afternoon output by up to 6% for west-facing panels on the adjacent residential streets
Estimated Monthly Output — 6.6kW
kWh/month · peak: Dec (631 kWh)
Solar in Forrestfield — What You Need to Know
Forrestfield is a Perth eastern suburb with a unique geographic position: it sits directly at the base of the Darling Range escarpment, with the steep quartzite and granite faces rising immediately to the east. This geography has practical solar implications: the pale escarpment face reflects afternoon and late-afternoon radiation onto western and north-western facing roof planes, supplementing direct solar income in a way that's measurable in generation data. The suburb's housing stock is mixed — established 1960s–80s homes on larger lots in the older sections, newer estates from the 2000s–2010s with standard orientation planning further north. City of Kalamunda has a supportive planning framework with no additional solar conditions, and Forrestfield benefits from the eastern suburbs installer market that serves High Wycombe, Maida Vale, and the surrounding growth area. The suburb's inland position (20km from the coast, at 70m elevation) gives it slightly more sunshine hours than Perth's coastal equivalents.
Solar Panel Cost in Forrestfield 2026
| System | Cost after STCs | Annual savings | Feed-in |
|---|---|---|---|
| 5kW | $2842–$3344 | $1620+ | 2.25c |
| 6.6kW ★ | $3344–$4484 | $2160 | 2.25c |
| 10kW | $4347–$5829 | $3024+ | 2.25c |
FAQs — Solar in Forrestfield
How much do solar panels cost in Forrestfield?
A 6.6kW system in Forrestfield 6058 costs $3344–$4484 after federal STC rebates in 2026.
Is solar worth it in Forrestfield?
Forrestfield earns a A- (Very Good) solar grade with a score of 82/100. 37% of homes here already have solar.
What size solar system for Forrestfield?
6.6kW suits most Forrestfield homes. Larger homes with pools or EVs should consider 10kW+. WA's feed-in tariff is 2.25c.
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