Commercial BESS

Size a commercial battery system for peak shaving, demand charge reduction, and energy arbitrage — with real tariffs across Southeast Asia.

Country

Peak hours: 08:00–22:00

Current peak demand

150 kW

Target peak reduction

30%

Shave 45 kW → 105 kW

Peak discharge duration

Battery size

205 kWh

52 kW PCS

Total capex

RM310.5K

Battery + PCS + install

Payback

15+ years

94% ROI over 15yr

Annual savings

RM27.8K

net of RM4.7K O&M

Daily load profile: Office

Shows how BESS clips peak demand from the grid perspective

Cumulative cashflow

15-year projection including O&M and degradation

Annual savings breakdown

Demand charge reduction

RM24.4K

45 kW × RM45 × 12 months

Energy arbitrage

RM3.4K

Charge off-peak, discharge at peak tariff

Total over 15 years

RM293.3K

Net of O&M and degradation

Revenue stacking: why commercial BESS beats single-use

A commercial battery isn't just peak shaving. By stacking multiple revenue streams, the same battery can earn 30–60% more than peak shaving alone.

Peak shaving

40–60%

Reduce max demand charges by 20–40%. The primary revenue stream in most SEA markets.

Energy arbitrage

15–25%

Charge at off-peak rates (typically 30–50% cheaper), discharge during peak periods.

Backup power

10–15%

Replace or supplement diesel generators. Avoids fuel cost + maintenance + noise.

Grid services

5–15%

Frequency regulation and demand response payments (SG, TH markets most active).

Commercial BESS products (100+ kWh)

Key specifications for the most widely deployed commercial battery systems in Southeast Asia

Product	Chemistry	Capacity	Power	Cycles	Warranty	Footprint
BYD BatteryBox C-Series	LFP	100 kWh	50 kW	6,000	10 yr	1.2 m²
Tesla Megapack	LFP	3,916 kWh	1,937 kW	7,000	15 yr	9.5 m²
BYD MC Cube	LFP	372 kWh	186 kW	6,000	15 yr	4.2 m²
Sungrow PowerTitan	LFP	2,752 kWh	1,254 kW	8,000	15 yr	8 m²
CATL EnerC	LFP	280 kWh	125 kW	10,000	15 yr	2.8 m²
Samsung SDI E3	NMC	156 kWh	78 kW	4,000	10 yr	1.5 m²
Huawei LUNA Commercial	LFP	200 kWh	100 kW	6,000	10 yr	1.8 m²

Case studies

Retail

Shopping Mall Peak Shaving

Bangkok, Thailand

System500 kWh / 250 kW

ResultReduced monthly max demand charge by 35%

Annual saving฿1.2M/year

Factory

Manufacturing Plant Load Shifting

Johor, Malaysia

System1 MWh / 500 kW

ResultAvoided RM480K/year in demand surcharges

Annual savingRM480K/year

Office

Office Complex Solar + Storage

Singapore

System200 kWh / 100 kW + 80 kWp solar

ResultSelf-consumption rate from 35% to 82%

Annual savingS$65K/year

⛽ Diesel Generator Replacement

See if replacing your diesel genset with battery backup saves money over 15 years.

Generator size (kVA)

50 kVA200 kVA (160 kW)1,000 kVA

Diesel price (RM/litre)

LowRM2.15/LHigh

Outage hours/month

1 hr6 hrs/month30 hrs

⛽

Diesel Generator

Genset capexRM160.0K

Annual fuel (269L/mo)RM6.9K/yr

Annual maintenanceRM12.8K/yr

15-year TCORM456.0K

🔋

Battery (BESS)

BESS capex (640 kWh)RM967.7K

Annual O&M (2%)RM19.4K/yr

Fuel costRM0 — zero fuel

15-year TCORM1.3M

15-Year Total Cost of Ownership

⏱️ Time-of-Use Arbitrage

Charge at off-peak rates, discharge at peak rates — using your 205 kWh BESS from the calculation above.

Off-peak: RM0.34/kWh(00:00–08:00)

Mid-peak: RM0.51/kWh(08:00–14:00)

Peak: RM0.61/kWh(14:00–20:00)

Mid-peak: RM0.51/kWh(20:00–22:00)

Off-peak: RM0.34/kWh(22:00–24:00)

24-Hour Tariff Profile

Battery Actions

⬇

–

⬆

–

00:0006:0012:0018:0024:00

Charge

Discharge

Idle

Rate spread

RM0.27/kWh

Usable capacity

144 kWh

Monthly saving

RM1.1K

Annual saving

RM13.0K

📊 ESG Reporting Dashboard

Annual projections for CDP, GRI, and TCFD reporting

GRI 302/305CDP C6/C7TCFD

CO₂ avoided

8.7t

per year

Renewable %

30%

of total energy

Solar gen.

MWh/year

Grid factor

0.585

kg CO₂e/kWh

Annual impact equivalences

🌳

412

trees planted

🚗

1.9

cars off the road

✈️

KL↔London flights

20-Year CO₂ Avoidance

173 tonnes

Scope 2 reduction · Malaysia grid mix

20-Year Energy Savings

RM555,640

At current tariff rates

Report-ready snippet

ESG ENERGY & CLIMATE METRICS
Reporting Period: 2026 (Projected Annual)
Location: Malaysia
System: 0 kW Solar PV + 205 kWh Battery Storage (commercial)
Framework References: GRI 302/305, CDP C6/C7, TCFD Metrics & Targets

SCOPE 2 EMISSIONS REDUCTION
  Grid emission factor: 0.585 kg CO₂e/kWh (IEA 2025)
  Annual renewable generation: 0 kWh
  Annual CO₂ avoided: 8.7 tonnes CO₂e
  20-year cumulative avoidance: 173 tonnes CO₂e

ENERGY MIX
  Renewable fraction: 30%
  Grid dependency: 70%
  On-site storage capacity: 205 kWh

FINANCIAL IMPACT
  Annual energy cost reduction: RM27,782
  20-year projected savings: RM555,640

Generated by battery.mom · 01/03/2026

Carbon Credit Estimator

Estimate carbon credit revenue from your battery system under 4 major standards.

System size (kWh)

Cycles per year

Projection years

Annual CO₂

37.2 t

Tonnes avoided per year

Total CO₂ (10yr)

333.0 t

With 2.5%/yr degradation

VCS revenue

$4.0K

≈ RM18,775

Rate

$12/t

Voluntary Carbon Standard

Revenue comparison across standards

Standard	Price/t CO₂	Total CO₂	Revenue (USD)	Revenue (RM)
VCS (Verra)	$12	333.0 t	$4.0K	RM18,775
Gold Standard	$28	333.0 t	$9.3K	RM43,807
Article 6.4	$45	333.0 t	$15.0K	RM70,404
ACX (Asia)	$8	333.0 t	$2.7K	RM12,516

VCS (Verra) — credit revenue projection

Carbon credit prices are indicative 2024/25 averages. Actual revenue depends on project registration, verification, and market conditions. Grid emission factors sourced from IEA 2023 country data.

BESS Product Head-to-Head

Pick two products to compare specs, cost-per-cycle, and lifetime value.

Product A

Product B

BYD

wins

Sungrow

wins

Spec	BYD BatteryBox C-Series	Sungrow PowerTitan
Chemistry	LFP	LFP
Capacity	100 kWh	2752 kWh ★
Power	50 kW	1254 kW ★
Warranty cycles	6,000	8,000 ★
Warranty years	10	15 ★
Round-trip eff.	93%	95% ★
Footprint	1.2 m² ★	8 m²
Price/kWh	RM1,100	RM780 ★
Total price	RM110.0K ★	RM2.1M
Cost per cycle-kWh	RM0.18	RM0.10 ★
Lifetime energy	0.6 GWh	20.9 GWh ★
Energy density	83 kWh/m²	344 kWh/m² ★

Key metrics comparison

Demand Charge Heatmap

Identify peak demand events and see how battery shaving reduces your demand charges.

Facility

Peak demand

150 kW

Target reduction

30%

Show battery shaving

Peak events/week

Above 105 kW

Demand shaved

30%

−45 kW off peak

Monthly saving

RM2.0K

Demand charge only

Annual saving

RM24.4K

@ RM45.1/kW/mo

Off-peak (0:00–8:00) — RM0.337/kWh

Mid-peak (8:00–14:00) — RM0.509/kWh

Peak (14:00–20:00) — RM0.612/kWh

Mid-peak (20:00–22:00) — RM0.509/kWh

Off-peak (22:00–00:00) — RM0.337/kWh

Day	00	01	02	03	04	05	06	07	08	09	10	11	12	13	14	15	16	17	18	19	20	21	22	23
Mon	21	21	20	21	20	22	45	52	105	105	105	105	88	105	105	105	105	105	66	72	20	21	21	20
Tue	22	20	21	20	21	21	48	49	105	105	105	105	90	105	105	105	105	105	63	75	19	22	19	22
Wed	22	19	22	19	22	20	51	47	105	105	105	105	94	105	105	105	105	105	64	75	19	22	19	22
Thu	22	19	22	19	22	19	52	44	105	105	105	105	100	105	105	105	105	105	67	72	20	22	19	22
Fri	21	20	22	20	22	19	52	44	105	105	105	105	104	105	105	105	105	105	71	68	21	21	20	21
Sat	13	14	14	14	14	13	14	13	36	32	37	32	37	32	37	32	37	32	15	13	15	13	14	13
Sun	13	15	13	15	13	14	13	14	34	34	35	33	36	33	37	32	37	32	15	13	15	13	15	13

Demand level: <20% 20–40% 40–60% 60–75% 75–90% >90% Battery shaved

Key assumptions

C&I tariff: RM0.509/kWh

Demand charge: RM45/kW/mo

BESS cost: RM1,200/kWh

Round-trip efficiency: 88%

Degradation: 2%/year

Annual O&M: 1.5% of capex

System life: 15 years

Peak hours: 08:00–22:00

Looking for home battery?

For residential solar + battery sizing, use our dedicated home calculators.

Home BESS Calculator Shared Residential

Day	00	01	02	03	04	05	06	07	08	09	10	11	12	13	14	15	16	17	18	19	20	21	22	23
Mon	21	21	20	21	20	22	45	52	105	105	105	105	88	105	105	105	105	105	66	72	20	21	21	20
Tue	22	20	21	20	21	21	48	49	105	105	105	105	90	105	105	105	105	105	63	75	19	22	19	22
Wed	22	19	22	19	22	20	51	47	105	105	105	105	94	105	105	105	105	105	64	75	19	22	19	22
Thu	22	19	22	19	22	19	52	44	105	105	105	105	100	105	105	105	105	105	67	72	20	22	19	22
Fri	21	20	22	20	22	19	52	44	105	105	105	105	104	105	105	105	105	105	71	68	21	21	20	21
Sat	13	14	14	14	14	13	14	13	36	32	37	32	37	32	37	32	37	32	15	13	15	13	14	13
Sun	13	15	13	15	13	14	13	14	34	34	35	33	36	33	37	32	37	32	15	13	15	13	15	13

Day	00	01	02	03	04	05	06	07	08	09	10	11	12	13	14	15	16	17	18	19	20	21	22	23
Mon	21	21	20	21	20	22	45	52	105	105	105	105	88	105	105	105	105	105	66	72	20	21	21	20
Tue	22	20	21	20	21	21	48	49	105	105	105	105	90	105	105	105	105	105	63	75	19	22	19	22
Wed	22	19	22	19	22	20	51	47	105	105	105	105	94	105	105	105	105	105	64	75	19	22	19	22
Thu	22	19	22	19	22	19	52	44	105	105	105	105	100	105	105	105	105	105	67	72	20	22	19	22
Fri	21	20	22	20	22	19	52	44	105	105	105	105	104	105	105	105	105	105	71	68	21	21	20	21
Sat	13	14	14	14	14	13	14	13	36	32	37	32	37	32	37	32	37	32	15	13	15	13	14	13
Sun	13	15	13	15	13	14	13	14	34	34	35	33	36	33	37	32	37	32	15	13	15	13	15	13

Day	00	01	02	03	04	05	06	07	08	09	10	11	12	13	14	15	16	17	18	19	20	21	22	23
Mon	21	21	20	21	20	22	45	52	105	105	105	105	88	105	105	105	105	105	66	72	20	21	21	20
Tue	22	20	21	20	21	21	48	49	105	105	105	105	90	105	105	105	105	105	63	75	19	22	19	22
Wed	22	19	22	19	22	20	51	47	105	105	105	105	94	105	105	105	105	105	64	75	19	22	19	22
Thu	22	19	22	19	22	19	52	44	105	105	105	105	100	105	105	105	105	105	67	72	20	22	19	22
Fri	21	20	22	20	22	19	52	44	105	105	105	105	104	105	105	105	105	105	71	68	21	21	20	21
Sat	13	14	14	14	14	13	14	13	36	32	37	32	37	32	37	32	37	32	15	13	15	13	14	13
Sun	13	15	13	15	13	14	13	14	34	34	35	33	36	33	37	32	37	32	15	13	15	13	15	13