Hamburger Wasserwerke Awards Three-Year Contract for Residential Water Meters to Elster

Germany's second largest city orders Elster M100 multi-jet water meters in brass housing

ESSEN, Germany, April 13, 2011 - Elster (NYSE: ELT) announced today that it has been awarded a contract
from Hamburger Wasserwerke (HWW) for the supply of up to 110,000 M100
multi-jet water meters over the next three years.

(Logo: photos.prnewswire.com/prnh/20110126/SF35872LOGO-a )

The M100 wet-dial multi-jet water meter is one of the most popular and
well-established meters in central Europe. With nominal flow rates of Qn 1.5
to Qn 15, it is EEC approved for metrological classes C (horizontal) and B
(vertical), and can be mounted in virtually any position.

It offers long life and high accuracy over a wide operating range, and
has optional pulse interfaces - a prerequisite for automated meter reading
(AMR). The product has been approved to the latest European Directive
2004/22/EC and International ISO 4064 standards.

"HWW looks forward to the installation of the M100 multi-jet water meters
from Elster as part of our metering programme," said Bernd Redmann, director,
supply chain management for Hamburger Wasserwerke.

"The M100 meets our specifications in this Europe-wide tender both for
metrology and for lead-free housing, which our corporation has chosen as a
standard for the entire city," Redmann added.

HWW is part of Germany's largest publicly owned water management company
Hamburg Wasser Group, which manages water supply and wastewater for about two
million people in Hamburg and surrounding areas. Hamburg Wasser Group had
revenues of euro 471m in 2009, manages ca. 113 million cubic meters of water
a year, and operates over a million water meters.

"This flagship order from Hamburger Wasserwerke shows the growing
confidence that we enjoy from large German municipalities, and our ability to
match or exceed their requirements," commented Johannes Gutfleisch, sales
manager of Elster's water metering business in Germany.

About Elster

Elster (NYSE: ELT) is one of the world's largest electricity, gas and
water measurement and control providers. Its offerings include distribution
monitoring and control, advanced smart metering, demand response, networking
and software solutions, and numerous related communications and services -
key components for enabling consumer choice, operational efficiency and
conservation. Its products and solutions are widely used by utilities in the
traditional and emerging Smart Grid markets.

Elster has one of the most extensive installed revenue measurement bases
in the world, with more than 200 million metering devices deployed over the
course of the last 10 years. It sells its products and services in more than
130 countries across electricity, gas, water and multi-utility applications
for residential, commercial and industrial, and transmission and distribution
applications.

For more information about Elster, please visit www.elster.com.

Investors: John Bluth, Elster Investor Relations and Corporate Communications, +1-919-250-5425, john.bluth at elster.com; or Ronald Botoff, Elster Investor Relations, +1-919-212-4857, ron.botoff at elster.com; or Media: Rainer Mueller-Mueffelmann, Corporate Communications International, Elster, +49-6134-605-213, rainer.mueller-mueffelmann at elster.com; Perry Shead, Marketing Communications, Elster, +44-1582-846400, perry.shead at gb.elster.com; or Christoph Holder, Marketing Communications, Elster Messtechnik GmbH, +49-6206-933-328, christoph.holder at de.elster.com