Large Scale Battery
Storage — Melbourne
Supply Solar designs and installs large scale battery energy storage systems (BESS) for Melbourne factories, warehouses and logistics sites — from 100kWh to multi-megawatt-hour capacity. Reduce demand charges, add backup resilience, and unlock VPP revenue.
Free Large Scale Storage Feasibility Study
Load analysis · Demand charge modelling · Sizing
No obligation · We call within 2 business hours
How Does a Battery Cut Demand Charges?
Battery charges off-peak
Charged overnight on cheap grid power, or during the day from excess solar generation that would otherwise be exported at low feed-in rates.
Battery discharges at your peak
When your facility's load spikes — machinery start-up, HVAC peak, shift changes — the battery supplies power instead of drawing more from the grid.
Your demand charge drops
Because demand charges bill on your highest draw, shaving even one peak spike each month can meaningfully lower that line item — every month, for the system's life.
Properly sized systems typically shave peak demand by 20-50%, with total bill reductions of 10-20% once demand charge management and time-of-use arbitrage are both modelled.
What Size Battery Does My Facility Need?
Sizing depends on your peak demand, load profile, and whether you're pairing with existing or new solar. Here's a starting guide.
| System size | Typical duration | Indicative installed cost | Best suited to |
|---|---|---|---|
| 100–250 kWhEntry large-scale | 2–4 hours | $180–$300/kWh at scale | Medium warehouses, retail centres, offices with high demand charges |
| 250 kWh–1 MWhMid-scale BESS | 4 hours (typical sweet spot) | $180–$280/kWh at scale | Large warehouses, manufacturing sites, cold storage |
| 1–2 MWhLarge BESS | 2–4 hours | Priced per project | Large logistics centres, multi-building sites, data centres |
| 2 MWh+Utility-adjacent scale | 2–4 hours, custom | Priced per project | Major industrial sites, portfolio-wide deployments |
A 4-hour duration system is typically the most cost-efficient configuration for combined peak shaving and backup use. LFP (Lithium Iron Phosphate) chemistry is the standard for commercial stationary storage — lower cost, longer cycle life, better safety profile than NMC alternatives.
How Large Batteries Pay For Themselves
The most sophisticated commercial storage projects stack multiple value streams into the same system. Supply Solar models all three for your specific site.
| Value stream | How it works | Typical value | Design consideration |
|---|---|---|---|
| Demand charge reduction | Battery discharges during your facility's peak load, shaving the highest draw the utility bills on | 20-50% peak reduction; 10-20% total bill reduction typical | Usually the largest single value stream — drives most of the sizing decision |
| Backup power / resilience | Battery supplies critical loads during a grid outage, avoiding production loss or spoilage | Varies — highly valuable for cold storage, data centres, continuous processes | Oversizing purely for backup duration adds cost without daily value — balance against other streams |
| VPP / FCAS revenue | Battery makes capacity available to the grid for frequency response and demand response programs | Additional revenue layered on top of bill savings — varies with market conditions | Requires a control platform and market enrollment — Supply Solar advises on suitable providers |
A logistics centre example: a 500kW/2MWh system installed primarily for demand charge management and backup can also participate in ancillary services markets — improving overall utilisation and payback without compromising its primary purpose.
What a 500kW/2MWh System Delivers — Melbourne
A 500kW/2MWh battery is a common fit for a large warehouse or logistics centre — sized primarily for demand charge management, with backup and VPP participation layered on top.
Actual results vary by tariff structure, load profile and market conditions. Supply Solar models your specific site in every feasibility study.
Get My Feasibility StudySix Reasons It Makes Sense in 2026
Demand charges are the biggest single lever
For mid-to-large sites, demand charges can be 30-70% of the bill. A properly sized battery is often more financially impactful than the solar array above it.
Battery costs have fallen sharply
Large systems (100kWh+) now install at $180-300/kWh at scale — a very different economic case to a few years ago, driven by falling LFP battery pack costs.
Solar and storage compound the benefit
A hybrid system captures excess midday solar generation that would otherwise export at low feed-in rates, and shifts it to cover evening peaks and demand charges.
Backup power protects your operations
For cold storage, data centres and continuous processes, a grid outage means lost stock or lost production — a large battery can keep critical loads running.
Additional VPP revenue is real, not theoretical
Australia's grid-scale battery fleet earned tens of millions of dollars in energy and FCAS market revenue in 2026 — commercial-scale batteries can access a portion of this through aggregator programs.
Locks in predictable energy costs
Reducing exposure to volatile evening peak pricing and demand charge escalation gives your business a more predictable, controllable energy cost base.
How a Large Scale Storage Project Works
Load & tariff analysis
We analyse your interval electricity data and tariff structure to understand your actual demand charge exposure and peak load pattern.
Sizing & value-stack modelling
You receive a proposal modelling demand charge savings, backup value, and VPP revenue potential — with the trade-offs clearly explained, not just one number.
Compliance & grid connection
We manage the DNSP application, safety documentation (including Hazard Mitigation Analysis where required), and any fire authority engagement for larger installations.
Installation & commissioning
Our CEC-accredited team installs and commissions the system, configures the control software, and connects any VPP or monitoring platform.
Accredited, Award-Winning & Fully In-House
CEC-accredited, compliance-first
Large scale battery installations carry serious safety obligations. Every Supply Solar installation is completed by our own accredited team, with compliance documentation handled properly from day one.
2023 CEC Award & 2024 EUPD Award
Independent industry recognition of installation quality and customer experience — the benchmarks that matter for a large capital investment.
Value stack modelled, not guessed
Demand charge, backup and VPP value are all quantified in your proposal — not a single vague "savings" figure. You see exactly where the numbers come from.
O&M contracts — protect your asset
Annual monitoring, performance verification and safety inspections keep your large scale system generating rated value for its full operating life.
Large Scale Storage Near Your Facility
Supply Solar designs and installs large scale battery storage systems across greater Melbourne and regional Victoria.
What Melbourne Facilities Say
"Our demand charges were killing us every summer. Supply Solar modelled the peak shaving numbers from our actual interval data before we committed to anything — the battery's paid for a good chunk of itself already."
"Cold storage can't afford a blackout. The battery handles our backup requirement and shaves demand the rest of the time — Supply Solar sized it properly instead of just selling us the biggest unit."
"Managed the full grid connection and safety documentation for our 1MWh system — a lot more involved than a standard commercial solar job, and they knew exactly what was needed."
Large Scale Storage FAQs
What counts as large scale battery storage for a business?
How much can a large battery reduce demand charges?
How much does large scale battery storage cost?
What is peak shaving and how does it work?
Can a large battery earn revenue beyond bill savings?
What battery chemistry is used for commercial storage?
What safety standards apply to large battery installations?
Related Commercial Services
Commercial Battery Storage Pages
Other Commercial Services
Ready to Model Your Demand Charge Savings?
Book a free, no-obligation feasibility study. Supply Solar analyses your interval data, models the full value stack, and delivers a fixed-price proposal with your grid connection pathway mapped out.
No obligation · Demand charge, backup & VPP modelling · CEC-accredited · Melbourne & Regional Victoria