| Option | Characteristics |
| Grid-connected operating mode | - Constant power output operation in parallel with the electric grid.
- Automatically synchronizes with the electric grid.
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| Grid-independent operating mode | - Independent, automatic operation.
- Output tracks the electric load.
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| Grid-connected/grid-independent operating mode | - Constant power output operation.
- When grid fails or is out of tolerance, the powerplant automatically disconnects from the grid and provides independent, automatic operation.
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| Load shed | - If the grid fails, the optional load shed equipment can provide a signal to power off individual non-critical loads.
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| Grid-connected circuit breaker enables control signal | - Enables remote disconnect of powerplant from grid.
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| Multi Unit Load Share (MULS) capability | - Enables multiple PureCell® Model 400 powerplants to be installed in parallel to share load while in grid-independent mode.
|
| Heat recovery | |
| Low grade | - 60°C/140°F supply*
- 450 kW (1.537 MMBtu/hr) initial
- 500 kW (1.708 MMBtu/hr) nominal
|
| High grade | - 121°C/250°F supply*
- 200 kW (0.683 MMBtu/hr) initial
- 230 kW (0.785 MMBtu/hr) nominal
* Available heat at rated power. Low-grade heat assumes a return temperature of 27°C (80°F); high-grade heat assumes a return temperature of 90°C (194°F). If high-grade heat is utilized, the remaining value will be available as low-grade heat.
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| Double wall heat recovery heat exchanger | - Domestic water applications.
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| Remote data acquisition and control | - Remote access and control of the powerplant will be available in 2009.
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| Choice of operating fuel | - Natural gas.
- Anaerobic digester gas (ADG) will be available in 2010.
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| Dual fuel operation | - The powerplant will automatically change from one fuel to another as required.
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