GDF SUEZ makes an investment in Tendril to Better Address European Demand for Consumer-centric ESM Software, Analytics

PARIS and BOULDER, Colo. – February 3, 2015 – GDF SUEZ, a global energy independent producer and
Tendril, a leading U.S. provider of Energy Services Management (ESM) solutions, announce today the
signature of a partnership to better serve European electricity users. Under the terms of the
agreement, GDF SUEZ, through its investment fund GDF SUEZ New Ventures targeting innovative
startups, invests 7,2 mio$ in Tendril.

“We have been planning our entry into the European market for a long time,” said Adrian Tuck, CEO
of Tendril. “We knew our proven, enterprise-class software platform could be customized to meet the
diverse needs of the European market. Our challenge was finding a forward-thinking utility partner to
help us build winning solutions and support our market entry as a lighthouse partner. We have found
that partner in GDF SUEZ.”

Tendril’s ESM Platform already delivers highly personalized energy services to millions of customers
in the U.S. Developed over the past 10 years and honed through millions of customer interactions,
the Tendril ESM Platform is the only flexible, scalable, enterprise-class software platform that serves
as the connective tissue between the providers and consumers of energy. The goal of this
partnership is to enable European customers to have access to Tendril’s customized ESM solution. In
turn, Tendril will benefit from GDF SUEZ’s large customer base and should contribute to addressing
the pressing issue of energy transition in Europe.

“This new investment by GDF SUEZ New Ventures is a very significant step for GDF SUEZ” said Gérard
Mestrallet, CEO of GDF SUEZ. “Following our first investment in the Belgian startup Powerdale
specialized in smart mobility in August 2014, we are now striking a deal in the field of smart energy,
another priority development area for our Group. ESM solutions developed by Tendril will enable us to
better understand the individual needs of each of our customers. We will deliver tailored products and
services that establish a truly personal and engaging energy experience for millions of customers.”

About GDF SUEZ New Ventures
GDF SUEZ New Ventures fund aims at taking minority equity positions in companies that share its
strategic business orientation and have reached the pre-production development stage. Created in
2014, the €100 million fund has identified the following priority sectors:
– Energy control and load management,
– Municipalities, regions and mobility,
– Home comfort,
– Decentralized power production and storage.

GDF SUEZ develops its businesses (power, natural gas, energy services) around a model based on
responsible growth to take up today’s major energy and environmental challenges: meeting energy
needs, ensuring the security of supply, fighting against climate change and maximizing the use of
resources. The Group provides highly efficient and innovative solutions to individuals, cities and
businesses by relying on diversified gas-supply sources, flexible and low-emission power generation
as well as unique expertise in four key sectors: independent power production, liquefied natural gas,
renewable energy and energy efficiency services. GDF SUEZ employs 147,400 people worldwide and
achieved revenues of €81.3 billion in 2013. The Group is listed on the Paris and Brussels stock
exchanges and is represented in the main international indices: CAC 40, BEL 20, DJ Euro Stoxx 50,
Euronext 100, FTSE Eurotop 100, MSCI Europe and Euronext Vigeo (World 120, Eurozone 120, Europe
120 and France 20).

About Tendril
Tendril is defining data-driven Energy Services Management (ESM) for the evolving energy market.
Our open, cloud-based software platform provides the infrastructure, analytics and understanding
required to deliver personalized energy services. This targeted approach drives new business
opportunities, delights consumers and has led to some of the industry’s highest engagement and
satisfaction rates. For more information, please visit

Julie Vitek, 713 636 1962

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