Who it is for
Sites supplied and metered at high or sub-transmission voltage.
Ausgrid high voltage tariffs
Ausgrid · EA365, EA370, EA390 · 2026–27
Sites supplied and metered at high or sub-transmission voltage.
Sydney, the Central Coast and the Hunter region.
Compare the high voltage codes.
The exact 2026–27 network rates sit side by side. Open a code below for the worked example, the charge window and the checks before you change anything.
| Code | What it is | Status | Access | Energy | Demand / capacity | Export | Battery fit |
|---|---|---|---|---|---|---|---|
| EA365HV Connection — Embedded NetworkHigh voltage | Daily access, peak/off-peak energy and a kVA capacity charge. | Available |
|
|
| — | Strong |
| EA370HV Connection — SystemHigh voltage | Daily access, peak/off-peak energy and a kVA capacity charge. | Available |
|
|
| — | Strong |
| EA390Sub-transmission Connection — SystemSub-transmission | Daily access, peak/off-peak energy and a kVA capacity charge. | Available |
|
|
| — | Strong |
What this family covers.
These codes share a charging method. The differences are in the rates, the time bands and who each code is for.
What is on the bill
- Daily access
- Time-of-use energy
- kVA capacity charge
Solar and battery
Same maths as the large-business family, at higher voltages. Get an engineering review before choosing equipment.
The codes in detail.
Open a code for its exact rates, the charge window, a worked example and the checks worth running before you change anything.
EA365HV Connection — Embedded NetworkMain connections for embedded networks supplied at high voltage.
EA365 HV Connection — Embedded Network
Who it’s for
Main connections for embedded networks supplied at high voltage.
What you pay
You pay fixed and energy charges. The bill also uses the highest kVA reading in set periods.
If you get solar
Solar can reduce daytime grid use. If the highest kVA reading occurs after solar output falls, solar alone will not remove it. Solar does not correct poor power factor.
If you get a battery
A battery can reduce the active-power part of the kVA peak. Check power factor before you size it.
Check before you decide
- Confirm this code on a current retailer bill.
- Use 12 months of interval data. Check the time of each billed peak.
- Get kW, kVA and power-factor data from the billing meter.
- Use data from the embedded network parent meter.
- Get an engineering review before you select equipment.
2026–27 network prices
What it costs, and when
These are the network’s charges only. Your retailer adds its own prices on top.
Peak is 3pm–9pm on working weekdays, November–March and June–August only.
What the network charges
- Access
- 7979.2649 c/day
- Peak energy
- 4.0147 c/kWh
- Off-peak energy
- 1.9792 c/kWh
- Peak capacity
- 41.1941 c/kVA/day
When the rates apply
3pm–9pm on working weekdays in November–March and June–August. All other times.
Illustrative example
Lower EA365 embedded-network capacity by 100 kVA
- This is a high-voltage embedded-network parent connection.
- The new rolling maximum is 100 kVA lower.
- The lower value applies for 365 charge days.
100 kVA × 41.1941 c/kVA/day × 365 days ÷ 100Illustrative network-charge reduction: $15,035.85 a year, excluding GST.This tariff uses the highest qualifying half-hour in the previous 12 months. One lower peak does not remove an earlier maximum. Confirm the parent-meter load and retailer pass-through.
Would a battery help?
A guide, not a quote
Strong fit
Peak-kVA control
A controlled battery may reduce the site maximum, but the bill is based on apparent power. Power factor and reactive load can be as important as battery kW.
A battery can reduce these
- The active-power contribution to the measured kVA maximum.
- Peak-period grid energy when the battery discharges at the same time.
- Solar spill that can be stored without sacrificing the required peak reserve.
A battery can’t change these
- Daily access, metering and other fixed charges.
- Reactive-power demand unless the inverter and control design explicitly provide power-factor support.
- A new maximum created after the battery empties or misses dispatch.
You’d need to check
- At least 12 months of interval data, including every billed maximum.
- Demand timestamps, seasonal windows and billing reset rules.
- kW, kVA, kvar and power-factor data at the billing meter.
- Retailer rates plus the network tariff—not a blended cents-per-kWh assumption.
EA370HV Connection — SystemSystem-connected sites supplied at high voltage.
EA370 HV Connection — System
Who it’s for
System-connected sites supplied at high voltage.
What you pay
You pay fixed and energy charges. The bill also uses the highest kVA reading in set periods.
If you get solar
Solar can reduce daytime grid use. If the highest kVA reading occurs after solar output falls, solar alone will not remove it. Solar does not correct poor power factor.
If you get a battery
A battery can reduce the active-power part of the kVA peak. Check power factor before you size it.
Check before you decide
- Confirm this code on a current retailer bill.
- Use 12 months of interval data. Check the time of each billed peak.
- Get kW, kVA and power-factor data from the billing meter.
- Get an engineering review before you select equipment.
2026–27 network prices
What it costs, and when
These are the network’s charges only. Your retailer adds its own prices on top.
Peak is 3pm–9pm on working weekdays, November–March and June–August only.
What the network charges
- Access
- 7979.2649 c/day
- Peak energy
- 4.0147 c/kWh
- Off-peak energy
- 1.9792 c/kWh
- Peak capacity
- 34.6232 c/kVA/day
When the rates apply
3pm–9pm on working weekdays in November–March and June–August. All other times.
Illustrative example
Lower EA370 system capacity by 100 kVA
- This is a high-voltage system connection.
- The new rolling maximum is 100 kVA lower.
- The lower value applies for 365 charge days.
100 kVA × 34.6232 c/kVA/day × 365 days ÷ 100Illustrative network-charge reduction: $12,637.47 a year, excluding GST.This tariff uses the highest qualifying half-hour in the previous 12 months. One lower peak does not remove an earlier maximum. Confirm the retailer pass-through and power factor.
Would a battery help?
A guide, not a quote
Strong fit
Peak-kVA control
A controlled battery may reduce the site maximum, but the bill is based on apparent power. Power factor and reactive load can be as important as battery kW.
A battery can reduce these
- The active-power contribution to the measured kVA maximum.
- Peak-period grid energy when the battery discharges at the same time.
- Solar spill that can be stored without sacrificing the required peak reserve.
A battery can’t change these
- Daily access, metering and other fixed charges.
- Reactive-power demand unless the inverter and control design explicitly provide power-factor support.
- A new maximum created after the battery empties or misses dispatch.
You’d need to check
- At least 12 months of interval data, including every billed maximum.
- Demand timestamps, seasonal windows and billing reset rules.
- kW, kVA, kvar and power-factor data at the billing meter.
- Retailer rates plus the network tariff—not a blended cents-per-kWh assumption.
EA390Sub-transmission Connection — SystemLarge businesses connected directly to the network supplied at sub-transmission voltage.
EA390 Sub-transmission Connection — System
Who it’s for
Large businesses connected directly to the network supplied at sub-transmission voltage.
What you pay
You pay fixed and energy charges. The bill also uses the highest kVA reading in set periods.
If you get solar
Solar can reduce daytime grid use. If the highest kVA reading occurs after solar output falls, solar alone will not remove it. Solar does not correct poor power factor.
If you get a battery
A battery can reduce the active-power part of the kVA peak. Check power factor before you size it.
Check before you decide
- Confirm this code on a current retailer bill.
- Use 12 months of interval data. Check the time of each billed peak.
- Get kW, kVA and power-factor data from the billing meter.
- Get an engineering review before you select equipment.
2026–27 network prices
What it costs, and when
These are the network’s charges only. Your retailer adds its own prices on top.
Peak is 3pm–9pm on working weekdays, November–March and June–August only.
What the network charges
- Access
- 7189.6542 c/day
- Peak energy
- 2.6491 c/kWh
- Off-peak energy
- 2.1667 c/kWh
- Peak capacity
- 9.7115 c/kVA/day
When the rates apply
3pm–9pm on working weekdays in November–March and June–August. All other times.
Illustrative example
Lower EA390 sub-transmission capacity by 1,000 kVA
- This is a standard sub-transmission system connection.
- The new rolling maximum is 1,000 kVA lower.
- The lower value applies for 365 charge days.
1,000 kVA × 9.7115 c/kVA/day × 365 days ÷ 100Illustrative network-charge reduction: $35,446.98 a year, excluding GST.This tariff uses the highest qualifying half-hour in the previous 12 months. One lower peak does not remove an earlier maximum. Large or non-standard sites may use an individually calculated tariff.
Would a battery help?
A guide, not a quote
Strong fit
Peak-kVA control
A controlled battery may reduce the site maximum, but the bill is based on apparent power. Power factor and reactive load can be as important as battery kW.
A battery can reduce these
- The active-power contribution to the measured kVA maximum.
- Peak-period grid energy when the battery discharges at the same time.
- Solar spill that can be stored without sacrificing the required peak reserve.
A battery can’t change these
- Daily access, metering and other fixed charges.
- Reactive-power demand unless the inverter and control design explicitly provide power-factor support.
- A new maximum created after the battery empties or misses dispatch.
You’d need to check
- At least 12 months of interval data, including every billed maximum.
- Demand timestamps, seasonal windows and billing reset rules.
- kW, kVA, kvar and power-factor data at the billing meter.
- Retailer rates plus the network tariff—not a blended cents-per-kWh assumption.
Questions about high voltage tariffs.
Short answers to the things people ask before they change a tariff.
What is EA365?
EA365 is the Ausgrid HV Connection — Embedded Network tariff. It is a available high voltage tariff for Embedded-network parent connections supplied at high voltage. Daily access, peak/off-peak energy and a kVA capacity charge.
What is EA370?
EA370 is the Ausgrid HV Connection — System tariff. It is a available high voltage tariff for System-connected sites supplied at high voltage. Daily access, peak/off-peak energy and a kVA capacity charge.
What is EA390?
EA390 is the Ausgrid Sub-transmission Connection — System tariff. It is a available sub-transmission tariff for Large system-connected sites supplied at sub-transmission voltage. Daily access, peak/off-peak energy and a kVA capacity charge.
Can solar or a battery reduce a high voltage bill?
Same maths as the large-business family, at higher voltages. Get an engineering review before choosing equipment. For EA365, the battery signal is strong: A controlled battery may reduce the site maximum, but the bill is based on apparent power. Power factor and reactive load can be as important as battery kW.
How do the high voltage network charges work?
The charges are Daily access, Time-of-use energy, kVA capacity charge. 3pm–9pm on working weekdays in November–March and June–August. All other times.
Which Ausgrid high voltage code applies to my site?
Sites supplied and metered at high or sub-transmission voltage. The code on your retailer bill is the starting point. Your retailer must confirm any tariff assignment or change.
Are these network prices or retail prices?
Effective 1 July 2026 to 30 June 2027. Published network prices exclude GST. These are the network charges only. Your retailer adds its own prices and may package the structure differently.
Reviewed by Mike Anderson · Last verified 7 November 2026
Effective 1 July 2026 to 30 June 2027. Published network prices exclude GST. These are network charges only; your retailer adds its own prices.
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