Sirius Energy Storage

The world’s first supercapacitor-based energy storage system

Key Attributes
  • Actively balanced and stable operation at all commercial voltages
  • Flat discharge curve (module discharge rate is determined by the load)
  • 2% per month self-discharge when idle and in sleep mode
  • Cell level energy density of 70-80Wh/kg
  • Supercap cell cycle life and capacity unaffected by high rate of charge or discharge
  • Supercap cell projected calendar life of 45 years and cycle life of 1,000,000 cycles
  • High charge / discharge capability
  • Wide operating temperature range of supercap cells
  • No degradation of capacity and efficiency over cycle life
  • Works with standard inverters/rectifiers/regulators used with Lead Acid or Li Ion batteries
  • Non-toxic, with no risk of thermal runaway
  • Form factor similar to chemical batteries

Sirius Advantage Over Chemical Batteries

Feature Sirius Chemical Batteries
Supercap Cell Cycle Life (Projected)1 1,000,000 200 to 10,000
DC to DC efficiency (@25⁰C)1 99% (constant over life) 70% to 95% (degrades over life)
Useable Capacity (% of rated capacity) 100% (constant over life) 50% to 80% (degrades over life)
Temperature Range1 -30⁰C to 85⁰C -20⁰C to 65⁰C
Operation outside Temperature Range Yes No
Max. Rate of Charge2 1.7C (120C3) 0.1C to 0.5C (NA4)
Max. Rate of Discharge2 1.7C (120C3) 0.1C to 0.5C (NA4)
Thermal Runaway No Risk Medium to High Risk
Energy Density (Wh/kg) 70 to 807 70 to 1005
Disposal costs Deferred Significant
Environmental impact of disposal None Significant
Short/Medium/Long Duration Single module Different batteries for different deployment
Warehousing No maintenance Periodic charging
  • 1Performance may vary at different temperatures and at different C-rates.
  • 2Max. rate of charge and discharge is provided for a standard Sirius module. This rate may vary at different temperatures and for different Sirius modules.
  • 3Rapid charge of storage for EV’s.
  • 4Rapid charge at 120C is not possible with chemical batteries.
  • 5On useable capacity basis.
  • 6Publicly available information. Manufacturer data may vary
  • 7Supercap cell level.

Kilowatt Labs’ Sirius Energy Storage is enabling a meaningful transition away from fossil fuels.


Sirius Energy Storage products for stationary applications are currently available in selected markets. This modular and scalable system provides a technically and commercially viable, plug-and-play replacement for chemical batteries. Applications include:


Stationary Storage Products

Model Number Capacity (WH) Nominal Voltage (VDC) Alarm1 Monitoring Safety Shutdown2 Anti-Theft
1000-12-B-0.6C-A-G 1000 12
3550-48-B-1.5C-M-SD-300RCB* 3550 48
6700-48-B-1.4C-M-SD-L-G 6700 48
7100-48-B-2C-M-SD-L-G 7100 48
  • *Only available in Australia
  • 1Alarm activated when a safety event occurs and must be rectified by the user. Deployed so that inverter/rectifier/regulator controls operating parameters of the module.
  • 2Module has internal safety functionality that automatically shuts down the module in the case of safety event and failure of inverter/rectifier/regulator.

Centauri Energy System

The singular solution for power management

Key Attributes
  • Handles torque loads allowing start-up of motors, compressors, and all forms of inductive loads with surge currents, without oversizing the system
  • Accepts 5x – 6x renewable input without oversizing the system
  • Plug-and-play connectivity to storage (does not require additional battery inverter for Sirius Energy Storage, Lead Acid or Li Ion)
  • Handles renewable intermittency by switching seamlessly between renewable generation and storage
  • Directly supplies the load from renewable generation during generation hours (does not route through the battery)
  • Charges storage during generation hours (concurrently as it supplies the load)
  • Plug-and-play connectivity to multiple DC or AC generation inputs
  • Seamless switching between multiple input sources without destabilizing the load
  • Energy blending capability for multiple input sources
  • Actively corrects power factor losses to 1 on the circuit caused by inductive and capacitive loads
  • Filters harmonics caused by the load
  • Includes built-in safeties, data logging, monitoring, and control features
  • Includes flexible protocols to communicate with and respond to signals from the grid
  • Is configurable to work in islanded or non-islanded modes. In non-islanded mode, is bi-directional.
  • Auto genset start/stop/control when genset is connected
  • Modular and scalable

Centauri Advantage Over Legacy Systems

Feature Centauri Legacy System
Torque Load Handling (handles surge currents enabling it to independently run all types of loads, inductive, resistive and capacitive) 1,000% for 2 sec Not Available
System efficiency (generation to output) 96.7%-99.1% 60%-80%
PV connection 6x rated capacity 1.5x rated capacity
Battery inverter, flexibility in type of battery connectivity Built-in (Supercapacitor based/Lead Acid/Li Ion) No-external
Power factor correction of load and harmonics filtering Yes No
Multiple source input (AC or DC) Yes-plug-and-play No
Blended energy output from multiple input sources (AC and/or DC) Yes No
Seamless switching between sources Yes No
Auto genset start/stop/control Yes No
Data logging, monitoring and control Yes No-external
Islanding/anti-islanding Yes No
Bi-directional option available Yes Yes
Built-in safeties Yes No
Modular Yes No
Plug-and-play (no external hardware or software required) Yes No


Centauri Energy Server can be deployed in any location, to service any kind of load profile (from kW to MW), with or without grid access or generator availability. The Centauri Energy Server is a fully integrated power electronics and software platform that requires no additional hardware or software to function. While the Centauri Energy Server can operate as a stand-alone device, it can communicate with external hardware and software if needed.

The Centauri Energy Server replaces integrated systems comprised of multiple components (PV inverter + charge controller + battery inverter + communication software and hardware + safety devices etc.) in all use-cases. The Centauri Energy Server can be deployed, with energy storage, in:

  • Residential
  • Commercial and industrial
  • University campuses
  • Mission critical facilities
  • Military bases
  • Mines
  • Agricultural farms
  • Oil and gas infrastructure
  • Island states
  • Prefabricated housing
  • Displaced persons’ camps
  • Disaster relief
  • Private virtual networks
  • Data centers

Centauri Server Models

Feature 3-Phase
Continuous Power 20kW - 1 MW
Generation Inputs PV
Diesel Generator (s)
Storage Inputs Sirius supercapacitor - based storage
Lead Acid
Li Ion
Load 3 - phase AC output (50Hz or 60Hz)
Communication Module
Automation Module
Transformer Module (for input and/or output voltage control)

Other Products

Product Description

Low Power (1.5kWh)
Low Voltage (24VDC)

Fully charges in 3 to 6 minutes
Low Power (4.5kWh)
Low Voltage (48VDC)

Fully charges in 3 to 6 minutes
Low Power (0.075kWh)
Low Voltage (5VDC)

3 to 6 minutes charge
Low Power (1.5kWh)
Low Voltage (48VDC)

5 minutes charge
High Power (20200-kWh)
High Voltage (500VDC)

3 to 6 minutes charge time, with 60 to 90 miles range
Available in 2017
Low Power (6kWh)
Low Voltage (60VDC)
For more information, check:

High power (250500/kW) for 23- minutes
High Voltage (480VDC)
Compact footprint reduces space requirements

Low Power (210-kW)
Low Voltage (48VDC)
Meets critical power requirements for cell phone towers
Wide temperature window is well suited for hot locations without requiring air conditioning
Long life even on weak grid applications requiring heavy cycling of the storage system

Scalable Autonomy, Up to Several Hours Back up Time
Back up via Super-capacitor Based Energy Storage Device
Chemical-free, Longest Energy Storage Device Life – Over 40 years
Re-charges in <60 min. with 1Million (1,000,000) cycles @100% DoD

Microprocessor based design for better control
Intelligent battery management with controlled charging
Pure Sine Wave <3% with PWM technology.
Integrated with smart AVR function
Short circuit and overload protection.
Cold start & generator compatibility

WRL fast charge Point charging station utilizes ultra-capacitor modules
Modules constitute a storage bank for the charging station
Charge dispensers have been safety tested • Pose no risk to the user
Fast charge point charging stations come equipped with charge dispensers
Connect directly from the storage capacity bank to the in-vehicle storage module

Designed to convert DC from Solar panel into AC to drive the pump.
Inbuild MPPT + VFD (Variable Frequency Drive)
IP65 index for higher temperature and high humidity
GPRS Remote Control, Android monitoring APP support
Support AC input when it is rainy day
Auto control motor based on water level
Pump protection when over-current, over-voltage and over-load
Reliable for extreme enviroment
Operating temperature -20C to +60C
CE certificate, three years warranty