Service area
Solar and battery installation in The Hills District
Set Energy installs rooftop solar, battery storage and commercial energy systems across Castle Hill, Baulkham Hills, Bella Vista, Kellyville, Rouse Hill and Norwest.
Designing for The Hills
Larger, newer homes with high all-electric loads, frequently on three-phase supply.
- High all-electric loads. Ducted air conditioning, pools, and increasingly an EV or two.
- Three phase changes the design space. Higher inverter allowances, higher export headroom and 22 kW EV charging all become available.
- Bigger systems make sense. The consumption profile here routinely supports larger arrays and storage at the top of the residential range.
- Two networks. The area is split between Endeavour Energy and Ausgrid.
- Commercial work too. The Norwest precinct adds a commercial layer to the area’s work.
The Hills at a glance
- Electricity network
- Endeavour Energy and Ausgrid
- Solar zone
- Zone 3. Rating 1.382 for the STC calculation
- Deeming period, 2026 installs
- 5 years
- Suburbs covered
- Castle Hill, Baulkham Hills, Bella Vista, Kellyville, Rouse Hill and Norwest
- Contractor licence
- NSW Electrical Contractor 467699C
Export limits in this area
Endeavour Energy or Ausgrid, whichever serves your street, sets your export limit. Not your installer, and not your retailer.
- Single-phase homes are typically capped well below three-phase ones.
- Conditions on your street can lower the allowance further.
- Our standard process is to lodge the application before you pay a deposit, so the approved figure is known rather than assumed.
The full picture is in NSW export limits and DNSP connection rules.
What we install here
- Rooftop solar, designed to the roof and the load, not to a package.
- Home battery storage, sized from interval data, with federal and NSW incentives assessed for eligibility and shown as separate line items.
- Hybrid systems and backup circuits.
- EV charger installation with a supply capacity assessment. Standard installs can be ordered online.
- Commercial solar and battery systems.
Incentives available here
Solar certificates and both battery incentives apply in this area.
- All of NSW sits in solar Zone 3, with a zone rating of 1.382.
- The federal Cheaper Home Batteries Program and the NSW Peak Demand Reduction Scheme battery incentive can be claimed on the same installation.
- The state incentive is created by an IPART-accredited certificate provider. We are not an ACP ourselves and work with one, so PDRS can be claimed on jobs we install.
See how STCs are calculated and how the two battery incentives stack.
Other service areas
Common questions
Do you install solar and batteries in The Hills?
Yes. The Hills is within our core service area, covering Castle Hill, Baulkham Hills, Bella Vista, Kellyville, Rouse Hill and Norwest. We hold NSW Electrical Contractor Licence 467699C.
Which electricity network covers The Hills?
Endeavour Energy and Ausgrid.
Your distributor determines your export limit and handles the connection approval for your system — it is separate from your electricity retailer, and it is named on your bill.
How do I know what export limit I will get?
It is determined by a pre-approval application lodged with your distributor before installation, and it depends on whether your property is single or three phase as well as local network conditions on your street.
We lodge that application before you commit.
Do you do commercial work in this area?
Yes — commercial rooftop solar, battery systems for demand management and trade supply, alongside residential work.
Is three-phase power common in The Hills?
More than in most of Sydney — newer estates were frequently built with it.
Three phase raises your inverter and export allowances, opens up 22 kW EV charging, and balances large single loads across phases.
If you are on single phase and planning solar, a battery and an EV, one upgrade conversation at the start beats three separate ones.
What system size suits a large all-electric Hills home?
All-electric households typically show overnight loads of 16–24 kWh, which supports storage in the 14–20 kWh usable band and an array sized to generate a genuine surplus — from your interval data, not from the roof area.
With a pool, shifting the pump into the generation window is usually the first and cheapest optimisation.
Working in The Hills?
Tell us the address and send a recent bill. We will confirm your distributor, your phase configuration and what is realistically approvable before quoting anything.