ECO SAKURAENERGY
PreliminaryBudgetary proposal · EW-AUS-BESS-2026-001
100 kW / 300 kWh BATTERY ENERGY STORAGE SYSTEM
Demand reduction · Energy arbitrage · EWISER intelligent control
Contact name not provided
Email not provided
NSW 2170
Prepared 18 August 2026 · Updated 18 August 2026AddressEco Sakura Energy Pty Ltd
59 Tacoma Circuit, Canning Vale WA 6155
Phone
0488 504 103
1300 823 028
Online
admin@ecosakura.com.au
https://www.ecosakura.com.au/
SITE CONCEPT
PROPOSED BATTERY CONCEPT
RECOMMENDED CONFIGURATION
SYSTEM DETAILS
Battery power100 kW
Nominal capacity300 kWh
Modelled usable energy270 kWh
Equipment pathway
- Battery system
- TBC
- PCS / inverter
- TBC
- Control / EMS
- EWISER control integration - final scope TBC
- Installation type
- Behind-the-meter C&I battery installation
Operating objective
Demand reduction + time-of-use arbitrage
Demand reduction $8,268 / yrTOU arbitrage $8,733 / yr
Specific equipment is selected during engineering and procurement.UTILITY COSTS
Preliminary modelBill-derived synthetic load. Twelve months of interval data is required before site-specific commitment.
INVESTMENT CASE
10 YEAR FINANCIAL SUMMARY
P50 expected case
These are imported EStack snapshot values. Editing this proposal does not re-run EWISER EDM.
MODELLED OUTLOOK
FINANCIAL ANALYSIS
ANNUAL ELECTRICITY COST10-year projection
Without solutionWith solution
MONTHLY COSTFirst-year comparison
WithoutWith solution
CUMULATIVE CASHModelled position
Below break-evenAbove break-even
CONFIDENCE BAND±20% on savings
| Metric | P90 | P50 | P10 |
|---|---|---|---|
| NPV | -$14,567 | $9,743 | $34,053 |
| Simple payback | 8.4 yr | 6.4 yr | 5.2 yr |
| IRR | 3.4% | 9.2% | 14.5% |
COMMERCIAL SNAPSHOT
INDICATIVE QUOTE
ToSample factory
Contact name not provided
NSW 2170
ABN 51 824 753 556FromEco Sakura Energy Pty Ltd
ABN 68 638 566 471
59 Tacoma Circuit, Canning Vale WA 6155
Prepared 18 August 2026| Description | Qty | Unit price | Line total |
|---|---|---|---|
| 100 kW / 300 kWh Battery Energy Storage System | 1 | $150,000 | $150,000 |
| Installation & Labour | 1 | TBC | TBC |
| 10 Year Warranty for Inverter / Battery | 1 | TBC | TBC |
| 60 Months Workmanship Warranty | 1 | TBC | TBC |
| Backup for 2 breakers | 1 | TBC | TBC |
Known subtotal$150,000
Quotation totalTBC
Indicative NSW PRC incentive-$59,262
Net indicative amountTBC
GST treatmentTBC
Quotation contains TBC items
The exact quotation total remains TBC. The known subtotal includes only rows with a numeric unit price. EWISER model benchmark: $150,000 gross less $59,262 indicative PRC = $90,738 net. PRC eligibility and value remain subject to confirmation.
ACCEPTANCE
Final acceptance is subject to an issued final quotation and approved contract.
Client name
Client signature / date
PAYMENT
To be confirmed by Eco Sakura
- Deposit
- TBC
- Lead time
- TBC following product selection and engineering review
NEW ENERGY TECH
CONSUMER INFORMATION PRODUCTS
Properly researching your options before purchasing can help you get the most value from your energy system. These consumer guides explain how to choose, install and use new energy technology.
Project contextSample factory · 100 kW / 300 kWh · Endeavour Energy
MODEL INPUTS
ASSUMED VALUES
Financial assumptions
- Installed cost
- $500 / kWh
- O&M
- 1.5% of capex / yr
- Insurance
- 0.5% of capex / yr
- Degradation
- 2% / yr
- Tariff escalation
- 2.5% / yr
- Discount rate
- 7%
- Analysis period
- 10 years
Site and incentive assumptions
- Installation year
- 2026
- PRC price
- $3.50 / certificate
- Annual usage
- 3,163,333 kWh
- Maximum demand
- 500 kVA
- DNSP
- Endeavour Energy
- Tariff
- N19 · LV STOU demand
- Federal battery discount
- Not included
ConfidencePreliminary
Load sourceBill-derived synthetic load
Bill reconciliation0% variance
Input limitationA bill-derived synthetic load supports a preliminary decision only. It does not substitute for site interval data.
SOURCE PROPOSAL WORDING
ASSUMPTIONS AND DISCLAIMER
The Standard Test Condition rating (STC) assumes a standard set of optimal operating conditions (25°C cell temperature, 1000 W/m² and an air mass of 1.5). The STC rating is most often used by manufacturers to classify the power output of PV modules. To calculate the system's energy production for any future year, expected degradation in system performance is included.
Energy Output is calculated based on historical solar irradiance at the given location. A typical meteorological year is selected using statistical methods. Factors including panel tilt, orientation (azimuth), and system efficiency are taken into account.
System efficiency is estimated to account for losses caused by intermittent shading, cable losses, dirt, scheduled downtime, manufacturer tolerances, inverter efficiency for DC to AC, battery round trip efficiency, and other factors.
Battery storage devices may not always provide Back-up, Grid Islanding or Uninterruptible Power Supply (UPS) capabilities.
Utility electricity price inflation is adjusted based on the given location. Figures are based on the AEMO National Electricity Forecasting Report referenced by the source proposal.
Australian Small-scale Technology Certificates (STCs) are an incentive provided under the Renewable Energy Target. One certificate is equal to one megawatt hour of eligible renewable electricity either generated or displaced by the installed system.
Battery STCs calculated for the Commonwealth Government's Cheaper Home Batteries Program are based on an assumption of 6.8 STCs per usable kWh of storage for the stated source-proposal period. The right to create STCs only arises once per premises and does not transfer with ownership of the premises. Additional solar batteries are not eligible after the first claim.
Inflation and effective interest rates are sourced from the Reserve Bank of Australia. The 20-year bond rate is used as the nominal rate.
Note The system design may change based on a detailed site audit. Estimated savings are based on past electrical usage and utility rates provided by the customer where applicable. Actual system production and savings will vary based on final system design, configuration, utility rates, applicable subsidies and energy usage after installation. Utility rates, charges and fee structures are subject to change. Production calculations are based on historical climate data and represent typical estimates of future solar production.
System end-of-life This system's lifetime expectancy is outlined in the Warranty section. System removal at end-of-life may incur additional costs. Contact Eco Sakura for disposal-service information.
System portability The system is intended to be permanently fixed to the Property. It is not portable and should not be moved without a suitably qualified professional.
EWISER project note
This page retains the source proposal's solar/STC assumptions at the customer's direction. The current quotation is battery-led; only final approved system scope and incentive terms are contractually applicable.
ENERGY INSTALLATION CONTRACT
DETAILS
| The Owner | Sample factory, NSW 2170 |
|---|---|
| Retailer | Eco Sakura Energy Pty Ltd · ABN 68 638 566 471 · 59 Tacoma Circuit, Canning Vale WA 6155 · admin@ecosakura.com.au |
| Cooling-off period | Applicable rights under the Australian Consumer Law and NETCC Code must be confirmed in the final contract. |
| System Price | TBC (known subtotal $150,000) · GST TBC |
| Less indicative PRC incentive | -$59,262 |
| Total Price Payable | TBC until every quotation item is priced |
| Description of Energy System Installation | 100 kW / 300 kWh Battery Energy System Installation |
| Battery | TBC · TBC · quantity TBC |
| PCS / Inverter | TBC · TBC · quantity TBC |
| Control / EMS | EWISER · EWISER control integration - final scope TBC |
| Backup | Backup for 2 breakers |
| Product warranty | 10 Year Warranty for Inverter / Battery |
| Workmanship warranty | 60 Months Workmanship Warranty |
| Property | NSW 2170 - street address not provided |
| Date of installation completion | TBC following product selection and engineering review |
| Contract documents | These Details; Special Conditions — Schedule 1; Terms and Conditions; Schedule of Rates — Schedule 2; System Specifications — Schedule 3 |
| Grid Connection Application | Subject to Endeavour Energy requirements and the final agreed responsibility. |
| Execution Method | Manual signature or Electronic Signature Process |
| Payment milestones | To be confirmed by Eco Sakura; deposit TBC. |
Draft agreement structureThis schedule requires Eco Sakura legal and commercial approval before customer acceptance.
Interpretation and Definitions. New Energy Tech Consumer Code. Energy System Installation. Solar System Installation. STC. VEEC.
Performance Obligations. Retailer and Owner obligations, warranties relating to the Property, site conditions, New Energy Tech Consumer Code, complaints, safety and subcontracting.
Privacy, Metering and Tariffs, Grid Connection Approval, Payment and Variations.
Supply Chain Price Adjustment, Completion Process, Risk and Title, Time for Installation Completion and Owner Termination Rights.
Retailer Termination Rights, Notices, Performance Relief. Small-scale technology certificates are a government incentive which allow for the creation of a tradeable commodity.
STCs and other Government Certificates continued. Miscellaneous terms covering GST, governing law, counterparts, amendments, waiver, consequential loss and survival.SCHEDULE 1
SPECIAL CONDITIONS
These project-specific conditions take priority only when they are included in the final signed agreement.
| # | Condition | Status |
|---|---|---|
| 1 | Final battery and PCS models require Eco Sakura engineering and procurement approval. | TBC |
| 2 | Street address, site layout, access, equipment clearances and civil scope require site verification. | Open |
| 3 | Final configuration requires approximately 12 months of validated interval data. | Essential |
| 4 | Endeavour Energy connection, protection and metering requirements apply. | TBC |
| 5 | Indicative PRC value requires confirmation by an Accredited Certificate Provider. | TBC |
| 6 | Final GST treatment, payment milestones, delivery program and acceptance terms require commercial approval. | TBC |
Enter approved project-specific conditions in edit mode.
Draft scheduleRequires Eco Sakura legal and commercial approval before customer acceptance.
SCHEDULE 2
SCHEDULE OF RATES
This schedule mirrors the five quotation rows. Edit a price once in the proposal editor and both Page 6 and this schedule update together.
| Item | Qty | Unit price | Status |
|---|---|---|---|
| 100 kW / 300 kWh Battery Energy Storage System | 1 | $150,000 | Priced |
| Installation & Labour | 1 | TBC | Unconfirmed |
| 10 Year Warranty for Inverter / Battery | 1 | TBC | Unconfirmed |
| 60 Months Workmanship Warranty | 1 | TBC | Unconfirmed |
| Backup for 2 breakers | 1 | TBC | Unconfirmed |
Known subtotal$150,000
Quotation totalTBC
Net after indicative PRCTBC
Pricing statusBudgetary only. Final rates require Eco Sakura commercial approval.
SCHEDULE 3
SYSTEM SPECIFICATIONS
Power100 kW
Nominal energy300 kWh
Modelled usable270 kWh
| Project configuration | 100 kW / 300 kWh |
|---|---|
| Battery manufacturer / model | TBC · TBC |
| PCS manufacturer / model | TBC · TBC |
| Control / EMS | EWISER · EWISER control integration - final scope TBC |
| Operating strategy | Demand reduction + time-of-use arbitrage |
| Backup capability | Backup for 2 breakers |
| Product warranty | 10 Year Warranty for Inverter / Battery |
| Workmanship warranty | 60 Months Workmanship Warranty |
| Connection voltage | TBC following site electrical review |
| Enclosure and environmental rating | TBC following product selection |
| Communications | TBC following integration design |
| Applicable standards | Applicable Australian standards and connection requirements to be confirmed during engineering. |
| Site and civil scope | TBC following site audit and equipment-layout review |
Target configurationThis schedule records a sizing target, not an approved-for-construction equipment schedule.
PRODUCT AND WORKMANSHIP
WARRANTY
The duration labels below are shared with the quotation and Details schedule. Coverage, exclusions and claim procedures remain subject to the final manufacturer and installation documents.
| Product / service | Type | Warranty | Status |
|---|---|---|---|
| TBC · TBC | Battery system | 10 Year Warranty for Inverter / Battery | Coverage and conditions TBC |
| TBC · TBC | PCS / inverter | 10 Year Warranty for Inverter / Battery | Coverage and conditions TBC |
| EWISER | Controls / EMS | TBC | Scope TBC |
| Eco Sakura Energy Pty Ltd | Installation workmanship | 60 Months Workmanship Warranty | Coverage and conditions TBC |
- Warranty start date and responsible party
- Retained capacity or throughput condition
- Cycle, temperature and operating limits
- Travel, labour and replacement exclusions
- Product serial numbers
- Commissioning and test results
- Operation and maintenance documents
- Warranty registration and claim contacts
Shared schedule100 kW / 300 kWh · 10 Year Warranty for Inverter / Battery · 60 Months Workmanship Warranty
SUPPLY AND SERVICE PATHWAY
MANUFACTURERS AND SERVICE CONTACTS
Project configuration100 kW / 300 kWh
Battery modelTBC
PCS modelTBC
| System layer | Manufacturer / provider | Contact | Status |
|---|---|---|---|
| Battery system | TBC | TBC | Product TBC |
| PCS / inverter | TBC | TBC | Product TBC |
| EWISER control layer | EWISER | ewiser.energy | Scope TBC |
| Retailer / project contact | Eco Sakura Energy Pty Ltd | admin@ecosakura.com.au 1300 823 028 | Proposal issuer |
EWISER connects the investment case to real operating performance.
01Assess
Validate interval data, tariff and the battery business case.
02Engineer
Select compatible equipment and confirm the site scope.
03Operate
Forecast, dispatch and measure performance against baseline.
ECO SAKURABattery proposal powered by EWISER
Final selection requiredBattery and PCS manufacturer information remains TBC until engineering and procurement approval.