SJ Power
Owner personally quotes every job on-site, then sends the same in-house licensed electricians to install — no subcontractors.
Across a 155-review lifetime average of 5 stars, the specific technicians (Ethan, Tyler, Kaitlyn, Rhys, Dylan) are named and praised repeatedly for on-the-spot problem solving, thorough system demonstrations, and leaving sites cleaner than they found them — which is useful to know if you're comparing against larger firms that subcontract. The office team (Claire and Sarah) gets specific credit for post-install warranty coordination and WiFi setup support, so if after-sales responsiveness matters to you — particularly for battery monitoring apps — that's worth confirming at the quote stage by asking directly how ongoing support is handled.
Their work
What it's like working with them
Based on a sample of Google reviews (155 total)
“left the site immaculate”
What they help with
Based on what their customers hired them for
How they stack up
Context from 251 solar panel installations in Lake Macquarie
Credentials & background
Sourced from 5 public records so you don't have to look them up yourself
About SJ Power
Shae, the principal and working owner, personally handles initial site inspections and quoting — something reviewers single out as a differentiator, noting he physically assesses each property before putting numbers together rather than quoting remotely. The installation side is led by Ethan, who manages on-site decisions including adapting to difficult roof profiles and complex multi-component setups; Tyler, Kaitlyn, and other team members carry out the physical work and are consistently praised for explaining systems and apps to homeowners before leaving. Critically, SJ Power employs its own licensed electricians rather than subcontracting — a distinction Shae makes explicitly and customers reinforce — meaning the same crew handles solar PV, battery storage, inverters, and associated electrical work under one roof. Their sweet spot is residential solar-plus-battery projects, including large-capacity systems like 48kWh Sigenergy battery banks, 3-phase setups with backup gateways, and AC-coupled retrofits onto existing solar infrastructure from other brands; they also handle electrical work beyond solar (bathroom renos, power points, ceiling fans), but solar and battery integration is clearly the core. The office team — Claire and Sarah are named across multiple reviews — manages scheduling, paperwork, and post-install follow-up, and customers on warranty claims or WiFi connectivity issues specifically credit Sarah with resolving problems after other installers had closed down.
Best for: large residential solar-plus-battery installations requiring licensed in-house electricians, homeowners wanting the business owner involved from quote to completion, and battery retrofits onto existing solar systems from other brands.
Location
Often needed together
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Claim This Profile — Free →Common questions about SJ Power
Does SJ Power use subcontractors, or do their own electricians do the installation?+
SJ Power uses its own licensed electricians for all installations — this is something Shae mentions during quotes and customers specifically call out as a reason they chose the business. The same in-house crew (frequently led by Ethan, with Tyler, Kaitlyn, and others) handles everything from rooftop panel work to battery and inverter wiring. Multiple reviewers mention this as a point of difference from other solar companies they'd contacted. If this matters to you, it's worth confirming at the quote stage that the team attending will be SJ Power employees.
What size solar and battery systems does SJ Power typically install?+
Reviews document a wide range — from modest residential solar-only systems up to 48kWh Sigenergy battery banks, 30kW 3-phase inverters with backup gateways, and multi-module configurations like 4 x 8kWh battery stacks. They've also handled AC-coupled retrofits connecting new batteries to existing third-party solar systems (such as SolarEdge 3-phase setups). Brands mentioned across reviews include Trina, Sigenergy, SolarEdge, and Ezy Sun. If you have an unusual roof profile or a complex existing system, several reviewers note the team adapted on-site without issue.
What areas does SJ Power service?+
SJ Power is based in Morisset, NSW, and reviews reference installations across the Central Coast and Lake Macquarie region — including Gwandalan and surrounding areas. The business is described by multiple customers as a local Central Coast company. If you're outside that general corridor, it's worth calling ahead to confirm whether they cover your area before booking a site visit.
What do customers say about SJ Power's pricing?+
Pricing feedback in the 50 reviews we analysed is consistently positive — several customers mention obtaining three or more quotes and SJ Power coming in most competitively, and one reviewer notes they were 'the cheapest price by far.' Shae provides quotes on-site after a physical inspection rather than remotely, and customers mention he was willing to discuss line items. That said, prices aren't published, so you'll need a site visit to get a figure.
Does SJ Power help with after-install support, like app setup or warranty claims?+
Post-install support comes up specifically in reviews — office staff member Sarah is named by multiple customers for resolving WiFi connectivity issues with monitoring apps and for managing warranty claims where the original installer had closed down. Shae is also mentioned attending a site on a Saturday after a grid outage to confirm the system was functioning correctly. The Sigenergy app is demonstrated before the install team leaves, according to several reviewers. If ongoing support is important to you, ask at the quote stage how warranty and monitoring queries are handled.