How to Submit a Commercial HPWH Application Through TESSA
Getting a large commercial HPWH accepted under the NSW Energy Savings Scheme (ESS) requires a product acceptance application through the IPART TESSA portal. EnergyAE prepares the modelling reports and submission package. You submit the application through your TESSA account using the data and files EnergyAE provides.
Before you start
You need an active TESSA account with an authorised signatory before a submission can be lodged. If these are not yet in place, see IPART’s account setup instructions. Setting this up takes time, so do it early in the project.
EnergyAE will provide a submission package before you begin. Each file in that package is named with a suffix that identifies the document type. Use this suffix to match each file to the correct upload slot in TESSA.
Raising a case
Log in to the TESSA portal at tessa.energysustainabilityschemes.nsw.gov.au.
From the home screen, scroll to the Raise a Case section and click Application for Product Acceptance.
The requestor details (Organisation Name and Organisation ID) will pre-populate from your account. Confirm that the Contact Name is correct before proceeding.
Product type and method
Under Product Details, set Product Type to Water Heater Systems - Heat Pump.
This is not the same as “Water Heater - Heat Pump”, which applies to residential HEER submissions. Selecting the wrong product type will give you HEER activity definitions (D17, D19) instead of the IHEAB definitions, and the submission will be made under the wrong method.
Set Method(s) to IHEAB. The Activity Definition(s) field will auto-populate with F16 and F17.
Product data submission
Click Add to open the data entry row. Complete all fields using the values EnergyAE provides in the data entry sheet. Do not estimate or round values: enter them exactly as supplied.
System identification
Brand is the brand name that will appear on the IPART accepted products list. Model Number is the system reference. Both must match the names used across all submitted documents exactly.
Set System Type using the dropdown. EnergyAE will confirm which option applies to your system configuration.
Zone energy results
TESSA accepts applications for Zone 3, Zone 5, or both. EnergyAE’s data sheet will contain values for whichever zones apply. You do not need to submit for both zones.
| Field | Unit |
|---|---|
| Zone 3 RefElec | GJ/year |
| Zone 3 HPgas | GJ/year |
| Zone 3 HPelec | GJ/year |
| Zone 3 Peak Load | MJ/day |
| Zone 3 Annual Energy Savings % | % |
| Zone 5 RefElec | GJ/year |
| Zone 5 HPgas | GJ/year |
| Zone 5 HPelec | GJ/year |
| Zone 5 Peak Load | MJ/day |
| Zone 5 Annual Energy Savings % | % |
System configuration
| Field | Notes |
|---|---|
| No. of hot water tanks | Total tank count for the submitted system configuration. |
| Pre-heat tank model number(s) | Model number(s) of the pre-heat tank(s). |
| Finishing tank model number(s) | Model number(s) of the finishing (boost) tank(s). |
| Pre-heat tank volume (L) | Volume per pre-heat tank in litres. |
| Finishing tank volume (L) | Volume per finishing tank in litres. |
| Total system tank volume (L) | Combined volume of all tanks in the system. |
| No. of heat pumps | Total heat pump unit count. |
| Total heat pump thermal capacity (kW) | Combined rated thermal output of all heat pump units. |
Booster and refrigerant
| Field | Notes |
|---|---|
| System booster type | Select from the dropdown. EnergyAE will confirm the correct option. |
| Booster model number(s) | Model number(s) of the booster unit(s). Leave blank if no booster. |
| Total thermal capacity (kW) | Combined thermal output including the booster. |
| Refrigerant type (GWP) | Select from the dropdown. Must match the EN 14511 test report. |
| Heat pump unit model number(s) | Model number(s) of the heat pump unit(s). |
| Refrigerant charge (kg) | Total refrigerant charge across all heat pump units. |
Click Add to save the row once all fields are complete.
Uploading supporting documents
Scroll to the External Document section and click Add for each file in the submission package.
EnergyAE names each file with a suffix that corresponds to a required document type in TESSA. The table below maps each suffix to its upload slot:
| File suffix | TESSA document type |
|---|---|
| [PLACEHOLDER] | [PLACEHOLDER] |
TESSA does not accept ZIP files. Each document must be uploaded individually.
Submitting the application
Review the product data and uploaded documents, then click Submit.
IPART will contact EnergyAE directly with any technical questions about the submission. Products are typically added to the accepted products list within 6 to 10 weeks of a complete submission.
For questions about the application content, contact EnergyAE.