Modelling, dispatch and reporting for battery storage on commercial and industrial sites.

What Tungsten does

Models the site

Twelve months of half hourly data, the network tariff and local prices are modelled to size the battery and set the expected savings.

Runs the battery

Forecasts site demand and prices and sets charge and discharge for every cabinet, every half hour.

Watches every cabinet

State of charge, cell temperatures and voltages, alarms and availability for each cabinet, held in one record.

Reports against the model

Savings by stream each month, measured against the baseline locked at commissioning.

Tungsten also holds the project space for consulting work. Consulting

Value streams

One schedule covers every stream. Tungsten weighs them each half hour against the battery's state of charge and the cycles it has left.

Peak demand

Lower peak demand charges

Discharges through the site's highest half hours so the demand the network bills on is lower. Measured as billed peak against the baseline peak.

Capacity

More load on the same connection

Holds network import under the connection limit as new load is added. Measured half hour by half hour against the limit.

Energy arbitrage

Buy low, use at the peak

Charges overnight or from midday solar and discharges when wholesale prices are highest. Measured at the site's grid exit point prices.

Flexibility

Paid to respond

Responds to network and market flexibility events within limits agreed with the site. Measured as events called, delivered and paid.

Every dispatch explained

Each half hour Tungsten records what the battery did and why: charging in the overnight valley, discharging to hold the demand peak, the energy moved and what it was worth. The same record feeds the monthly report.

ASKA Tungsten modelled day: unmanaged and grid demand against a 1,520 kW connection limit, battery charge overnight and discharge from 16:00, state of charge, the energy moved and the reason for each dispatch.

Control and data

Each cabinet is addressed on its own and takes instructions only from Tungsten. The site gateway connects out to Tungsten to collect the schedule. Nothing outside can connect in to command a cabinet.

A schedule is applied only within the operating limits set for the site.

ASKA manages all site data and every login that can see it. Data is held on servers in the Australasian region and is not stored or processed outside it.

  • Every cabinet dispatched separately
  • Outbound connection from site, no inbound access
  • Site operating limits checked before any change
  • Data held in the Australasian region, with access managed by ASKA
CABINET 01125 kWCABINET 02125 kWCABINET 03125 kWSITEGATEWAYOUTBOUND ONLYASKA TUNGSTENASKA MANAGED ACCESSSCHEDULE · LIMITSDATABASEAUSTRALASIA ONLY

Measured against the baseline

Each figure is measured from metered dispatch and set against the model the business case was built on, on the same tariff and assumptions.

When the site changes, Tungsten compares recent load with the same working days a year earlier and recasts the forecast if the difference falls outside a set band.

  • Monthly statement and quarterly owner report
  • Billing reconciliation against the network tariff
  • Every report numbered and held in the register

From model to monthly report

  1. 01

    Model

    The business case model sizes the system and sets the expected savings.

  2. 02

    Commission

    The baseline is locked at go live, on the tariff in force on that day.

  3. 03

    Dispatch

    Tungsten runs the battery every half hour and records each decision.

  4. 04

    Report

    Monthly results against the baseline, with any difference explained.