ESS New South Wales Residential

ESS Residential (D17/D19) ESC Calculator

Review the number of Energy Saving Certificates (ESCs) eligible for approved products on the IPART Registry for residential HPWH activities D17 and D19.

How to use: Find your product on the IPART ESS Registry. Note the ESC value for your activity and climate zone, enter it below, and this calculator gives the total ESCs and estimated value.

Activity Type

Activity D17 — HPWH replacing electric water heater

Residential heat pump water heater installed to replace an existing electric resistance water heater.

Activity D19 — HPWH replacing gas water heater

Residential heat pump water heater installed to replace an existing gas water heater.

NSW Climate Zone

Used to confirm the correct ESC column from the IPART Registry.

ESCs per Unit (from IPART Registry)

ESC count for activity D17, average zone, from IPART Registry.

Number of Units

ESC Price ($/ESC)

Check the ESS market for current ESC pricing.

Enter the ESCs per unit from the IPART Registry to see results.

Activity D17 covers residential heat pump water heaters replacing electric resistance systems in NSW under the Energy Savings Scheme (ESS).

Activity D19 covers residential heat pump water heaters replacing gas water heaters in NSW.

ESC values vary by climate zone and product. Products must be listed on the IPART ESS Registry to be eligible. This calculator provides an estimate only — always verify against current registry values.

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