Project Bella

Quick Ramping Thermal and Grid Charged BESS Generation...

Project Overview

The total site, located on 335 acres in Pinal County Arizona, will consist of 480 MW of thermal gas-fired generation and 440 MW AC of Battery Energy Storage utilizing a common, shared interconnection to the 500 kV Duke – Pinal Central line. The generator leads from the gas turbines and batteries will convert to 500 kV at the on-site switchyard. The project may be developed in phases to accommodate the capacity and associated energy requirements of the off-takers. The Projects will maintain an interconnection on the 500 kV Pinal Central to Duke segment, which will provide ideal deliverability to the Arizona load during peak periods and utilize excess solar renewable energy for battery charging during low demand periods.

FREQUENCY REGULATION

The Projects will provide system reliability through quick dispatch and automatic generation control technology.

PEAK SHAVING

The Projects maintain reliable capacity that can be deployed to provide low-cost electricity and minimize wholesale market price risk.

LOAD SHIFTING

The Projects are specifically designed to manage electricity demand and assist with efficient intra-day balancing.

Two Projects - One Efficient Solution

Cazador del Sol

Designed specifically for the SW conditions, will consists of a total 440 MW AC of grid-charged battery energy storage with liquid cooled cabinets and self-contained fire suppression systems. The quick deployment of charge and discharge to and from the grid can provide essential load shifting, renewable integration, frequency regulation and peak energy supply to compliment local reliability.

Atrapa Soles

Consists of ten (10) GE LM6000 PC units with every two units sharing a 13.8 to 230 kV step-up transformer. The highly reliable aeroderivative units are designed for quick start, ramping and efficient overall heat rate. The quick ramping structure is ideal for renewable energy integration and local reliability purposes.

Natural Gas fired capacity of 480 MW and energy attributes including thermal energy storage optimization and AGC control.

  • Ramp Rate: 25 MW/Min
  • Minimum Up: 4 hours
  • Minimum Down: 2 hours
  • Availability: 96% (Peak Period)

Natural Gas fired capacity of 480 MW and energy attributes including thermal energy storage optimization and AGC control.

  • Capacity: 400 MW
  • Discharge: 1,600 MWH
  • Cycles per Year: 365
  • Availability: 98 %

Electrical and Natural Gas Interconnection


The Project maintains directly proximately to the 500 kV and 230 kV electrical transmission and EPNG natural gas interconnection.

The Project Site runs parallel to the Duke / Pinal Central 500 kV line, which is part of the Pinal West to Pinal Central transmission corridor. Transmission owners include SRP, TEP, WAPA and AEPCO. In addition, WAPA’s 230 kV line runs on the same towers.

Interconnection Application has been submitted on the 500 kV system, along with all required supporting documents and modeling for 928 MW at the POI.

The Project site includes direct proximity and easement for the El Paso Natural Gas Pipeline (as identified). The EPNG maintains adequately suitable capacity to deliver sufficient quantities and pressure as required for the sustainable operation of the site. In addition, the Transwestern Natural Gas Pipeline is approximately 3 miles from the site and could be included in the site design if desired