Bescore containerized battery energy storage system, lit from the upper left on a dark floor
Bescore containerized battery storageProduct image, AI-lit from manufacturer photograph, not an installation
Bescore liquid-cooled battery storage cabinet, lit from the upper left on a dark floor
Bescore liquid-cooled storage cabinet.

Understand the system

Understanding BESS & Microgrids

A battery energy storage system (BESS) stores electrical energy and releases it under control when the site needs it. The deployable system combines the battery and its battery management system (BMS) with a power conversion system (PCS) that moves power between the battery's DC side and the site's AC side, a controller or energy management system (EMS) where the design needs one, and the protection, cooling, fire measures, transformer, switchgear and transfer device that let the same battery operate grid-tied, islanded during an outage, or permanently off grid.

Storage day cycle · One illustrative commercial day

Start with the operating pressure. Capacity comes later.

Charged and readyStoring surplusCovering the peakSupporting critical load

Bescore air-cooled battery energy storage cabinet with a front control panel, product image
Bescore air-cooled storage cabinet · Product image · Not an installation

Bescore product image · Not an installation

  1. 06:00 Dawn

    The site wakes on grid power.

    Load rises before the sun. The battery waits, charged, and grid import stays well under the site limit.

  2. 12:00 Noon

    Solar outruns the site. The battery stores the surplus.

    Midday solar covers the load, and the energy the site cannot use goes into the battery instead of being limited.

    Weak or constrained supply · Coordinate storage, renewables and generation around the site’s real limits.

  3. 18:00 Evening peak

    Demand climbs past the limit. The battery covers the difference.

    The energy management system (EMS) discharges the battery so grid import holds at the site limit through the evening peak.

    Peak demand control · Use stored energy against a measured demand profile and tariff.

  4. 22:00 Night

    The feeder fails. The battery carries what must stay on.

    The transfer switch separates the site, general loads are shed, and the battery supplies the critical load until the grid returns.

    Outage resilience · Keep selected critical loads available through a defined interruption.

Illustrative site demand, grid import and battery over one daySite demand rises from dawn, peaks in the early evening above the site import limit and falls at night. Solar covers midday demand and charges the battery. In the evening the battery discharges so grid import stays at the limit. At 22:00 the feeder fails, grid import falls to zero and the battery carries the critical load.00:0006:0012:0018:0024:00SITE IMPORT LIMITBATTERYFEEDER LOST
  • Site demand
  • Grid import
  • Site import limit
  • Solar
  • Battery charging
  • Battery discharging

Illustrative day, not measured data and not a record of a Metro Power installation. A real profile comes from the site’s interval data; only the loads in the approved backup design stay on during an outage.

From the example to your site

What does your actual load profile show?

Interval demand, the tariff, outage history and the loads that must stay on determine which storage question to test first. This illustrated day cannot size your project.

Four storage arrangements

The site decides the equipment.

The same battery chemistry sits in four very different electrical arrangements. Each one below is a single-line drawing: choose the arrangement, then change the operating condition to see where the power goes and which device acts.

Commercial site with EV charging

While the grid is present the battery works behind the meter. It holds the site below its demand limit, stores midday solar for the evening and stops the chargers from pushing the supply past its rating. When the feeder fails, the transfer switch separates the site and the battery carries what must stay on.

What it needs that the others do notA transfer switch that separates the site from the utility within a stated time, with anti-islanding protection and an interconnection agreement with the distribution utility.

Grid available. The utility and the solar supply the site, the battery charges, and the EMS holds grid import below the site limit while the chargers run.

  • DC power
  • AC power
  • Control and data
  • Power flowing, arrow shows direction
  • De-energized
Illustrative arrangement, not a record of a Metro Power installation. Equipment Metro Power can supply is shown as Bescore product renders and studio photographs; the grid, generation and buildings are drawn.
Utility grid
Sets voltage and frequency while it is present. Drawn, because Metro Power does not supply it.
Main switchboard
Incoming protection and the revenue meter the EMS reads. Studio photograph of switchgear Metro Power supplies.
Transfer switch
Opens the utility connection when the feeder fails and closes it again only after the island is resynchronized.
Storage cabinet
Battery, battery management system (BMS), power conversion system (PCS) and solar input in one enclosure. Bescore render of the CE2-105PG.
Solar array and combiner box
DC coupled: the solar charges the battery without a second conversion.
Critical load
The part of the site that must ride through an outage. It stays on its own feeder.
EV chargers
The largest flexible load. The EMS limits their power while grid-tied and they are shed in an island. Bescore render of the Super EV charger.
Other load
General services, shed with the chargers when the site islands.
Energy management system (EMS)
Reads grid import at the switchboard and sets battery and charger power to stay below the limit.
Cloud or SCADA link
One remote view of storage and chargers, as Bescore draws them on one platform.
What each arrangement asks of the design
RequirementGrid-tied commercialWeak grid or ruralIsland or off gridUtility scale
The converter mustFollow the grid; form the island only if the site rides through outagesFollow the grid or generator; form the island when both are awayForm the grid at every hourFollow the grid; grid-forming where the system operator asks for it
Switching deviceAnti-islanding protection, plus a static transfer switch where loads must stay onATS choosing grid or generator, plus the cabinet transfer switchGenerator changeover onlyRing main unit and MV switchgear at each station
GroundingExisting site grounding; an island neutral if the site islandsIsland neutral, usually through an isolation transformerIts own grounding systemPlant and substation grounding grid
ApprovalUtility interconnection agreementInterconnection, plus an island protection and grounding studyElectrical permit; no interconnectionGrid connection study and the system operator’s requirements
SupervisionEMS on site with a cloud or SCADA viewEMS that starts and stops the generatorThe hybrid inverter’s own logicEMS control room reporting to the system operator

Operating situation

Four arrangements. Three ways to run.

Whichever arrangement a site resembles, the battery runs in one of three electrical situations, and the situation decides most of the equipment and most of the cost. State which one applies before asking for a price.

  1. 01UTILITYPCSSITE LOAD

    Grid-tied

    The battery stays connected to the utility and works behind the meter: holding demand below a target, shifting solar into the evening, or supporting voltage on a weak feeder. The grid sets the voltage and frequency and the PCS follows it. What the design needs: a grid-following PCS, protection that disconnects the system the moment the grid is lost (so that it cannot energize a dead line while a crew is working on it), and an interconnection agreement with the distribution utility.

  2. 02BATTERYGRID FORMING PCSCRITICAL LOAD

    Islanded when the grid fails

    A hospital, water system or plant that must keep running through a feeder outage. When the grid drops, a transfer device opens the connection to the utility and the PCS switches from following a voltage to making one. What the design adds: a PCS that can form the island's voltage and frequency (grid-forming), a transfer device with a stated transfer time, a plan for shedding loads the island cannot carry, usually an isolation transformer to give the island its own earthed neutral, and a tested sequence for reconnecting when the grid returns.

  3. 03SOLAR + GENHYBRID INVERTEROFF-GRID LOAD

    Permanently off grid

    An island barangay or missionary-area village with no feeder. The converter makes the grid all the time. For a village of a few hundred kilowatt-hours the usual design is one hybrid inverter that takes solar, charges from a generator when needed and supplies the loads under its own internal logic, with no separate energy management system. What the design needs: a grid-forming converter or hybrid inverter, a generator interface, solar charge control, and the same earthing and protection discipline as any installation, without utility interconnection because there is nothing to interconnect with.

BESS BENEFITS · TWO PERSPECTIVES

Manage when energy is used, and protect what matters.

Battery storage can shift, support or back up energy according to a defined operating objective. The benefit changes with the owner, tariff, critical loads, renewable generation and control strategy.

Choose your viewSee the benefits that matter to your role.

01FOR THE UTILITY, SITE OR FACILITY OPERATOR

  1. 01

    Peak and demand management

    A controlled discharge strategy can reduce selected peaks or reshape site demand.

    What makes it trueRequires interval data, tariff analysis and correct power/energy sizing.
  2. 02

    Renewable-energy coordination

    Storage can absorb selected solar production and release it when the operating plan calls for it.

    What makes it trueDepends on generation profile, load, controls and interconnection rules.
  3. 03

    Resilience for prioritized loads

    A properly designed system can support defined critical loads during eligible outage conditions.

    What makes it trueBackup duration is limited by available energy, load and system configuration.
  4. 04

    Microgrid and diesel optimization

    BESS, solar, grid and generator resources can be dispatched as a coordinated system.

    What makes it trueRequires engineered controls, protection, transition logic and operating ownership.

02FOR OCCUPANTS, TENANTS OR SERVICE USERS

  1. 01

    Continuity for essential services

    Critical lighting, communications, refrigeration or other designated loads may remain available during supported events.

    What makes it trueOnly loads included in the approved backup design are supported.
  2. 02

    Better use of local renewable energy

    Stored solar energy can be used later instead of being limited to the moment it is generated.

    What makes it trueActual benefit depends on load timing, storage capacity and dispatch.
  3. 03

    Potentially steadier site operations

    Fast controls may help the facility manage selected power transitions and operating disturbances.

    What makes it truePerformance depends on the engineered system and protection scheme.
  4. 04

    A pathway to cleaner site energy

    Storage can enable greater renewable participation and reduced generator runtime in suitable projects.

    What makes it trueEnvironmental benefit depends on the charging source and operating strategy.
Important context

BESS does not automatically lower electricity cost or power an entire facility during every outage. Savings and backup performance require validated data, engineering and an agreed dispatch strategy.

Learn the system in Metro Power Academy

System architecture

See the system move.

Follow the journey from physical equipment to the decision a customer or operator can act on.

  1. Containerized liquid-cooled battery compartment, product image
    01 · Product image

    Capture

    Lithium iron phosphate (LFP) cells, built into modules and racks, store the energy as DC. The battery management system (BMS) watches every module's voltage and temperature and sets the current the battery may safely accept or deliver.

  2. 02 · System layer

    Connect

    The power conversion system (PCS) is the only link between the DC battery and the AC site. Its power rating, its overload margin and its control modes decide what the plant can do, including whether it can hold up an island when the grid is gone.

  3. 03 · System layer

    Understand

    A controller decides when to charge and discharge against load, solar, generator, tariff and reserve rules. A single hybrid unit can run this logic internally; a plant with several sources or several cabinets needs a separate energy management system (EMS).

  4. Substation switchgear line-up, product photograph
    04 · Product photograph

    Act

    Protection, cooling, fire measures, the transfer device, the isolation transformer where one is used, and the utility interconnection make the system safe in every operating mode, not only while the grid is present.

INTERACTIVE SYSTEM VIEW

BESS and microgrid architecture

Stored energy is coordinated by power conversion, controls, protection and the site’s real operating priorities.

OPERATING SIMULATION · ILLUSTRATIVESELECT PLAY TO TRACE THE SYSTEM
01GRID + SOLARPHYSICAL INPUT
Containerized liquid-cooled battery compartment, product image02BATTERY + BMSCONTROL POINT 1
PCS + EMSCONTROL POINT 2
04PROTECTED LOADSOPERATING OUTCOME
78 % SOCCHARGE · STORE · DISPATCH
Physical energy or flow Measurement and data Controlled responseConceptual model, not an installed project. Product photographs and product images show the equipment types supplied; actual architecture and values depend on project design.
STAGE 01 · Energy inputs

Grid / renewables

Whether a grid is present, and where the solar joins the system, decides the converter's job and the site's grounding before any sizing begins.

  • 01Utility supply, or none
  • 02Solar, DC-coupled or AC-coupled
  • 03Generator where used
System progress
1 / 6
Select a stage Follow the moving system path Review what must happen there

Field realitybecomesOperational action

BESS & Microgrids operating context
Illustrative operating context · Not a Metro Power installation

System to real world

See what changes when the architecture begins operating.

  1. 01
    Receive

    Grid or renewable energy enters

  2. 02
    Store

    Controls manage charge and state of energy

  3. 03
    Dispatch

    Power serves the operating priority

This visual explains system behavior. Final performance depends on approved design, field conditions, configuration and operating discipline.

Metro Power visual explainer

Watch the operating idea take shape.

Use this short film as orientation, then continue into the system architecture, technical lesson or readiness action.

BESS · Film 17 of 35 · 0:48

Define the BESS operating outcome

Connect the battery, BMS, PCS, EMS, protection and dispatch strategy to a clearly defined operating job.

The Metro Power solution

Technology, made deployable here.

We close the gaps between the manufacturer’s product, Philippine site conditions and the people who must operate the system.

  1. 01Use-case and load-data assessment
  2. 02Power and energy sizing
  3. 03Grid, solar and diesel operating concept
  4. 04Site, safety and interconnection coordination
  5. 05Commercial roadmap and partner diligence
  1. Bescore liquid-cooled battery storage cabinet, product render
    The manufacturer’s productPublished ratings, documents and factory tests
  2. Matched to the siteRatings, frequency, climate and approvals checked against the published product
  3. Philippine site conditions60 Hz service, climate, access and approvals
  4. Prepared to operateDelivery, commissioning and permits coordinated, and the operating team trained
  5. The team that operates itHandover records, training and continuing support
Drawing, not to scale

Metro Power closes the two gaps marked on the line.

Complete decision path

From first question to accepted operation.

A solution is complete only when technical behavior, project evidence and operating ownership remain connected.

  1. 01 · Define

    Which service has priority and what is the operating promise?

    Use-case statement, load data, reserve and baseline

  2. 02 · Engineer

    What power, energy and system behavior are required?

    Interval profile, single-line diagram (SLD), studies, site and exact configuration

  3. 03 · Protect

    How are abnormal conditions prevented, detected, isolated and managed?

    Hazard analysis, protection, emergency plan and authority review

  4. 04 · Operate

    How will EMS priorities, warranties and lifecycle costs remain controlled?

    Dispatch rules, acceptance tests, training and performance records

Failure modes to control

  • Monthly-bill sizing

    Use interval demand, critical-load and operating scenario data.

  • Grid-following assumed as backup

    Verify supported mode, transition, protection and island tests.

  • Nameplate economics

    Model usable energy, auxiliaries, degradation and continuing cost.

Acceptance evidence

  1. 01Exact BMS, PCS and EMS interfaces
  2. 02Electrical and interconnection studies
  3. 03Layered safety and emergency readiness
  4. 04Integrated operating-mode tests
  5. 05Handover, warranty and lifecycle evidence

Possible equipment paths

See what may fit, then verify it.

These are starting points for discussion, not automatic recommendations. Use the plain-language clues below to understand where each option may fit and what Metro Power still needs to confirm.

  1. 1Recognize the possible useCheck whether it sounds like your site or operating need.
  2. 2See what is knownThe evidence label tells you how mature the available information is.
  3. 3Open the next checkWe explain the project details needed before selection.
What this evidence means
Technical sheet available
Published technical details are available. Metro Power will still confirm the exact model and project configuration.
Availability needs checking
This may suit the need, but Metro Power must reconfirm the current model, configuration and availability.
BSC-CE2-0105K0215K / BSC-CE2-0105K0200K
01

Air-cooled microgrid ESS

BSC-CE2-0105K0215K / BSC-CE2-0105K0200K

Evidence: Technical sheet availableManufacturer product render

May supportCommercial, industrial and microgrid energy storage

Modular air-cooled cabinet for commercial, industrial and microgrid storage, published by Bescore as the CE2-105.

First details to review
  • 105 kW with 215 kWh, or 100 kW with 200 kWh, as stated on the datasheet
  • Lithium iron phosphate (LFP) cells, 3.2 V / 280 Ah; 0.5P charge and discharge
See what we know and need next

10 more BESS & Microgrids products

BSC-CE4-0125K0261K
02

Liquid-cooled C&I ESS

BSC-CE4-0125K0261K

Evidence: Technical sheet availableManufacturer product render

May supportCommercial, industrial and microgrid energy storage

Compact liquid-cooled cabinet for commercial and industrial storage, published by Bescore as the CB4-125. Bescore now publishes this unit as BSC-CB4-0125K0261K, with the ratings below.

First details to review
  • 125 kW rated, 150 kW maximum, as stated on the datasheet
  • 261 kWh; LFP cells, 3.2 V / 314 Ah; 832 V DC
See what we know and need next
BSC-CD2-0050K0200K
03

PV + diesel + storage ESS

BSC-CD2-0050K0200K

Evidence: Availability needs checkingProduct reference image

May supportHybrid solar, diesel and storage microgrids

All-in-one outdoor cabinet for solar, diesel generator and storage microgrids. Bescore's current publications do not use the CD2 code; the closest published unit is the CD-50 PV&DG, model BSC-FC2050K200K-GS, rated 50 kW and 200 kWh on the 2024 sheet, and no 100 kW / 200 kWh version is published. Metro Power confirms the current configuration with Bescore before an offer.

First details to review
  • 50 kW rated power and 200 kWh rated energy, per the 2024 sheet
  • 380/400 V AC, 50/60 Hz
See what we know and need next
BSC-CB1-0500K1075K
04

20-ft high-cube container C&I ESS

BSC-CB1-0500K1075K

Evidence: Availability needs checkingProduct reference image

May supportCommercial, industrial and microgrid energy storage

Containerized air-cooled commercial and industrial storage, published by Bescore as the 20HC ESS, model BSC-CB10500K1075K-GS, on its 2024 sheet. It does not appear in Bescore's current product range, so Metro Power confirms availability with Bescore before an offer.

First details to review
  • 500 kW rated power
  • 1,075 kWh rated energy
See what we know and need next
BSC-CS3-2500K5000K
05

20-ft high-cube container liquid-cooled battery compartment

BSC-CS3-2500K5000K

Evidence: Technical sheet availableManufacturer product render

May supportLarger commercial, industrial or utility storage projects

Liquid-cooled DC battery container for utility-scale storage, published by Bescore as the CS3-5000. It connects through a separate power conversion and medium-voltage station rather than at low voltage.

First details to review
  • 5,016 kWh rated energy in this model; smaller variants from 3,344 kWh (BSC-CS3-2000K3300K to BSC-CS3-2500K4600K)
  • 1,331.2 V DC rated; 1,081.6 to 1,497.6 V DC range; no AC power rating is published for the container itself
See what we know and need next
BSC-CE2-0105K0215K-M2B0S
06

Microgrid ESS with solar input and grid switch

BSC-CE2-0105K0215K-M2B0S

Evidence: Technical sheet availableManufacturer product render

May supportHybrid solar, diesel and storage microgrids

The CE2-105 platform with built-in solar charge controllers and a static transfer switch (STS), the device that moves a site between grid and island operation. Published by Bescore as the CE2-105PG.

First details to review
  • 105 kW with 215 kWh, or 100 kW with 200 kWh (BSC-CE2-0105K0200K-M2B0S)
  • Solar input of 2 x 55 kW (this model) or 4 x 55 kW (BSC-CE2-0105K0215K-M4B0S)
See what we know and need next
BSC-CTC-5000K0000K
07

PCS and medium-voltage station

BSC-CTC-5000K0000K

Evidence: Technical sheet availableManufacturer product render

May supportUtility-scale storage connected at medium voltage

Containerized power conversion system (PCS), the equipment that converts battery DC to grid AC, with a step-up transformer to 10, 20 or 35 kV. Published by Bescore as the CTC-5000 and paired with the CS3-5000 battery container.

First details to review
  • 1,725, 2,500, 3,450 or 5,000 kW rated power (BSC-CTC-1725K0000K to BSC-CTC-5000K0000K)
  • Bescore publishes this unit at 50 Hz. A 60 Hz version is not yet confirmed.
See what we know and need next
BSC-CF2-0050K0100K-H
08

PV, storage and hybrid inverter cabinet

BSC-CF2-0050K0100K-H

Evidence: Technical sheet availableManufacturer product render

May supportSolar, storage and backup for small commercial sites

Outdoor all-in-one cabinet combining a hybrid inverter, battery and solar input for small commercial microgrids and backup. Published by Bescore as the CF2-50 in three sizes.

First details to review
  • 50 kW with 100 kWh (this model), 40 kW with 86 kWh (BSC-CF2-0040K0080K-H) or 30 kW with 71 kWh (BSC-CF2-0030K0060K-H)
  • Bescore publishes this unit at 50 Hz. A 60 Hz version is not yet confirmed.
See what we know and need next
OmniStax Series
09

Three-phase hybrid inverter

OmniStax Series

Evidence: Technical sheet availableManufacturer product render

May supportSolar, storage and backup for small commercial sites

Hybrid inverter combining solar input, battery charging and discharging, generator input and backup output for small commercial microgrids. Published by Bescore as the OmniStax series, ES-29.9K-TP to ES-60K-TP.

First details to review
  • 29.9, 30, 40, 50 or 60 kW rated output
  • Bescore publishes this unit at 50 Hz. A 60 Hz version is not yet confirmed.
See what we know and need next
BSC-CR1-240S1P280-G0
10

Air-cooled battery rack

BSC-CR1-240S1P280-G0

Evidence: Technical sheet availableManufacturer product render

May supportBattery building blocks inside storage cabinets and containers

Indoor battery rack of the kind fitted inside Bescore cabinets and containers, for projects that specify the battery building blocks.

First details to review
  • 215 kWh at 768 V DC (this model) or 157 kWh at 563.2 V DC (BSC-CR1-176S1P280-G0)
  • Operating range 672 to 864 V DC or 492.8 to 633.6 V DC
See what we know and need next
BSC-CP1-016S1P280-G0
11

Air-cooled battery pack

BSC-CP1-016S1P280-G0

Evidence: Technical sheet availableManufacturer product render

May supportBattery building blocks inside storage cabinets and containers

The 14 kWh module that battery racks and cabinets are built from, for projects that specify storage down to the module.

First details to review
  • 14 kWh rated energy
  • 51.2 V DC rated; 41.6 to 57.6 V DC range
See what we know and need next
Search and compare the complete Metro Power portfolio

Capacity, savings and backup duration require validated interval load, site and operating data; monthly consumption alone is insufficient. Frequency, service voltage and the largest motor to be started are confirmed before any model is proposed.

Turn learning into a decision

What your team should be able to decide next.

Move from a battery-capacity guess to a defensible use case, sizing basis and project gate.

  1. 01Leadership

    What outcome earns the investment?

    Savings, resilience, renewable integration or diesel reduction require different operating and commercial logic.

    Choose the primary use case
  2. 02Engineering

    What can be sized responsibly?

    Interval load, critical loads, outage history, solar or generator data, site and interconnection are foundational.

    Assemble the sizing inputs
  3. 03Finance

    Is the business case real?

    Model tariff, demand charges, cycling, degradation, availability, financing and avoided-cost assumptions.

    Test the first assumptions
  4. 04Operations

    How will the system dispatch safely?

    Define EMS priorities, protection, fire strategy, maintenance, incident response and operating ownership.

    Build the operating concept

Where it may fit

Does one of these sound like your need?

You do not need to choose equipment yet. If one of these situations sounds familiar, Metro Power can help define the correct starting point.

  • Peak shaving
  • Solar self-consumption
  • Critical-load backup
  • Diesel optimization
  • Renewable smoothing
  • Grid-tied storage on a constrained feeder
  • Islanding a hospital, water system or plant during outages
  • Off-grid supply for island and missionary-area barangays

Prepare without the guesswork

Bring what you have. We’ll help with what is missing.

These inputs help us understand the project. They are not entry requirements, and you do not need every item before contacting us.

  1. 01

    12 months of bills and tariff

    Bills show consumption, tariff and demand charges, the starting point for testing potential value.

  2. 02

    Interval load data

    Time-based load data shows when power is used, which is essential for responsible power and energy sizing.

  3. 03

    Critical loads and outage history

    The loads that must stay on and the real outage pattern define the resilience requirement.

  4. 04

    Solar/generator details

    Existing generation changes how the battery may charge, dispatch and coordinate with the site.

  5. 05

    Single-line and transformer data

    The electrical arrangement and transformer capacity reveal connection limits and protection interfaces.

  6. 06

    Site, fire and interconnection constraints

    Space, access, fire strategy and utility rules can change whether a concept is practical.

  7. 07

    Service voltage and frequency (the Philippine grid is 60 Hz)

    The equipment must be published or confirmed for the service voltage and for 60 Hz operation before any model is proposed.

  8. 08

    Existing solar: inverter make, rating and how it connects

    Existing solar changes how the battery connects and whether the inverter can keep running when the site is islanded.

  9. 09

    The largest motor that must start in an island, with its starting current

    In an island the battery converter alone must start the largest motor, and its overload figure, not the battery energy, decides whether it can.

  10. 10

    Distance to the coast and exposure to salt air

    Salt air affects the enclosure, cooling and corrosion protection the equipment needs.

Guided next stepBuild my starter checklistAnswer one question at a time. Your progress is saved on this device.

Your next decision

What must storage do at your site?

Peak reduction, solar use and backup each need a different operating plan. Tell us the main job and what load records you have. Missing data is a useful starting point, not a reason to guess battery size.