ADDING and REPLACING MidAmerican Energy Holdings Company to Acquire Illinois Wind Project from Invenergy

DES MOINES, Iowa--()--Add to third sentence of Invenergy boilerplate: "America's largest independent wind power generation company,"

The corrected release reads:

MIDAMERICAN ENERGY HOLDINGS COMPANY TO ACQUIRE ILLINOIS WIND PROJECT FROM INVENERGY

Today, MidAmerican Energy Holdings Company announced its agreement to acquire the 81-megawatt Bishop Hill II wind project (“Bishop Hill II”) from Invenergy Wind LLC (“Invenergy”). This project, which currently is in construction in Henry County, Ill., will feature 50 General Electric 1.62-megawatt wind turbines.

Bishop Hill II is located near the town of Galva, approximately 40 miles northwest of Peoria, Ill. Construction began in fourth quarter 2011, and Bishop Hill II is expected to be in commercial operation in fourth quarter 2012. Ameren Illinois will purchase the electricity from the project pursuant to the terms of a 20-year power purchase agreement.

Bishop Hill II is the second phase of Invenergy’s Bishop Hill Wind Energy Center. The first phase, Bishop Hill I, also is under construction in Henry County and is due to commence commercial operations in 2012.

“We are pleased to reach this agreement with MidAmerican and look forward to working together to make the Bishop Hill Wind Energy Center the pre-eminent wind project in Illinois,” said Michael Polsky, president and CEO of Invenergy. Invenergy has developed and placed in-service 26 wind farms in North America and Europe.

“Wind energy is a renewable generation source that meets current and future energy needs in an environmentally efficient and cost-effective manner,” said Greg Abel, chairman, president and CEO of MidAmerican Energy Holdings Company. “The Bishop Hill II wind project fits our model of investing in the renewable energy sector.”

MidAmerican is the No. 1 rate-regulated utility owner of wind-powered generation capacity in the U.S. The addition of the Bishop Hill II wind project demonstrates MidAmerican’s commitment to environmental respect and renewable energy.

MidAmerican began building wind energy projects in 2004. Its first wind project was constructed in Iowa. The company has built or acquired more than 3,300 megawatts of wind generation. MidAmerican has invested approximately $6 billion in wind-powered generation, with projects in Iowa, Wyoming, Washington and Oregon.

MidAmerican Energy Holdings Company
MidAmerican Energy Holdings Company, based in Des Moines, Iowa, is a global provider of energy services. Through its energy-related businesses, MidAmerican provides electric and natural gas service to more than 6.9 million customers worldwide. These businesses are Pacific Power, Rocky Mountain Power and PacifiCorp Energy, comprising PacifiCorp; MidAmerican Energy Company; Northern Powergrid Holdings Company; Northern Natural Gas Company; Kern River Gas Transmission Company; and CalEnergy. Information about MidAmerican is available at www.midamerican.com.

Invenergy
Invenergy and its affiliated companies develop, own and operate large-scale renewable and other clean energy generation facilities in North America and Europe. Invenergy is committed to clean power alternatives and continued innovation in electricity generation. America's largest independent wind power generation company, Invenergy’s home office is located in Chicago, and it has regional development offices throughout the U.S., Canada and Europe. Invenergy and its affiliated companies currently have more than 6,700 megawatts of wind, solar and thermal projects under contract, in construction, or in operation. For more information, visit www.invenergyllc.com.

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Contacts

MidAmerican Energy Holdings Company
Ann Thelen, Director, 515-281-2785
Communications and Media Relations
athelen@midamerican.com
or
Invenergy
Alissa Krinsky, 312-582-1554
Communications Director
akrinsky@invenergyllc.com

Contacts

MidAmerican Energy Holdings Company
Ann Thelen, Director, 515-281-2785
Communications and Media Relations
athelen@midamerican.com
or
Invenergy
Alissa Krinsky, 312-582-1554
Communications Director
akrinsky@invenergyllc.com