ENERGY RECOVERY, INC.: Osmotic Power Play: Energy Recovery Teams with GS Engineering & Construction Corp to Develop Highly

   ENERGY RECOVERY, INC.: Osmotic Power Play: Energy Recovery Teams with GS
 Engineering & Construction Corp to Develop Highly Available Renewable Energy
                                    Source

South Korean Industrial Conglomerate Adopts Desalination Leader's Proven PX
Pressure Exchanger Technology to Advance New Category of Clean Energy

SAN LEANDRO, Calif., October 15, 2013  - Energy Recovery Inc. (NASDAQ:  ERII), 
the leader  in  capturing reusable  energy  from industrial  fluid  flows  and 
pressures cycles,  today announced  that it  has signed  a mutual  cooperation 
agreement with  Seoul-based  global  company  GS  Engineering  &  Construction 
Corporation (GS E&C Corp) which is a part of Korean conglomerate GS Group, to
significantly  advance  osmotic  power  generation  using  Energy  Recovery's 
state-of-the-art PX  Pressure  Exchanger®  technology. A  pilot  program  is 
already underway and it is anticipated that a unit will be operational in 2014
at GS E&C Corp R&D center in Korea.

The revolutionary process  of Pressure  Retarded Osmosis (PRO)  is created  by 
mixing of seawater and  freshwater and the resulting  osmotic power serves  as 
both a renewable and consistent source of electricity. While still the in the
early stages, the  best estimates  of global production  potential of  osmotic 
power exceed  1,600 terawatt  hours, or  the equivalent  of half  of  Europe's 
entire energy demand.

Initially developed for seawater  reverse osmosis (SWRO) desalination,  Energy 
Recovery's PX® devices  have shown  tremendous potential  and interest  across 
multiple industries due to their adaptability, reliability and efficiency.

How Energy Recovery's PX Pressure Exchangers® Work

Energy Recovery's  PX  devices are  currently  deployed at  SWRO  desalination 
plants all over the world. By recycling the energy typically wasted as part of
the  reject   stream,   the   PX   devices-which   operate   at   98   percent 
efficiency-reduce energy use by up to 60 percent, helping to make desalination
an affordable solution  to global  water scarcity.  Energy Recovery's  devices 
function on a similar  principle in osmotic power  processes. You can watch  a 
video of that process here: How the PX Pressure Exchanger works.

How Osmotic Power Works

For many  years  the idea  of  PRO  or osmotic  power  was 'pie  in  the  sky' 
scientific theory and not  seen as a viable  energy solution.^[1] Today,  the 
fields of  chemical engineering  and  science are  looking at  this  renewable 
energy source as  a major solution  to the world's  water and energy  scarcity 
problems.^[2] Osmotic  power process  can convert  the pressure  differential 
between two water streams into hydraulic pressure that can be used to drive  a 
turbine that produces electrical energy. The  PX devices work in unison  with 
the turbines  to  cost-effectively enable  stable,  reliable,  environmentally 
friendly energy production anywhere freshwater and saltwater are available.

For more information on how Osmotic Power works, see here.

The advantages of osmotic power are numerous:

  oGenerates clean power with no harmful emissions
  oSeawater is abundant and readily available
  oSolution is scalable and applicable worldwide
  oMore reliable than other power sources (i.e. Wind and solar) because the
    power generated is base loaded

Proven Partners
GS E&C Corp is one of the main Korean multinational firms investing heavily in
R&D in the  global water and  renewable energy  markets. In 2011  GS E&C  Corp 
acquired Spanish desalination facility  maker, Inima, one  of the world's  top 
ten reverse osmosis (RO) desalination specialists, for $US 287M. Through  this 
acquisition,  GS  E&C  Corp  aims  to  expand  its  RO  desalination  business 
operations. Soon  thereafter, GS  E&C Corp  was issued  a  multimillion-dollar 
grant  from  the  South  Korean  government  to  expand  their  research   and 
development program to design  a pilot plant for  a Pressure Retarded  Osmosis 
(PRO) application. For  GS E&C Corp,  entering into a  joint R&D effort  with 
Energy Recovery  was  a logical  extension  and  next step  given  its  market 
leadership in reverse osmosis desalination.

"We're thrilled to partner  with Energy Recovery  on osmotic power  technology 
that promises  to bring  about innovative  and sustainable  change," said  Mr. 
Jeong Woo Seo, CTO of GS E&C. "We  chose the PX based on the value and  proven 
reliability and performance  that it has  provided to us  and dozens of  other 
engineering firms worldwide for over two decades."

"GS Engineering & Construction Corp is a visionary company, on the horizon  of 
the next  big  thing.  We  have  been  looking  forward  to  developing  this 
technology with a strategic technology partner to make osmotic power a reality
across the world,"  said Tom Rooney,  CEO of Energy  Recovery. "It's ideal  to 
collaborate with a proven engineering market  leader such as GS Engineering  & 
Construction Corp and thrilling to adapt  our core technology for new  sources 
of renewable energy."

About Energy Recovery

Energy  Recovery   Inc.  (NASDAQ:   ERII)  technology   harvests  power   from 
high-pressure fluid  flows and  pressure cycles.  Through collaboration  with 
industry, Energy Recovery helps make industrial processes within water, oil  & 
gas, and other  industries more profitable  and environmentally  sustainable. 
With over 15,000 energy recovery devices installed worldwide, Energy  Recovery 
sets the  standard for  engineering excellence,  cost savings,  and  technical 
services to clients across  the globe. Year after  year, the company's  clean 
technologies   save   clients    over   $1.4   Billion    (USD)   in    energy 
costs.Headquartered in  the  San Francisco  Bay  Area, Energy  Recovery  has 
offices in Madrid, Shanghai, and Dubai.www.energyrecovery.com

About GS E&C Corp. Headquartered  in Seoul, South Korea,  GS Group is the  8th 
largest conglomerate in Korea. In 2005, GS E&C, an important part of GS Group,
rebranded itself from LG  Engineering and Construction  to GS Engineering  and 
Construction. Since then, it has  expanded globally, managing megaprojects  in 
the Middle  East,  Southeast  Asia,  and  around  the  world.  The  Dow  Jones 
Sustainability Index (DJSI) evaluates  it as the top  10 percent best  company 
among 2,500 market capitalization companies  in the world. Please visit  their 
website for more information.

                                     ###

Media Contacts:

Kristan Kirsh

Energy Recovery

kkirsh@energyrecovery.com

+510.746.5012

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[1]Andrea Achilli, Tzahi Y. Cath^, Amy E. Childress^, (2009). Power generation
with pressure retarded osmosis: An experimental and theoretical investigation.
Journal of Membrane Science, Vol. 343, Issues 1-2, pp. 42-52.

[2]Chalida Klaysom,Tazhi Y. Cath,Tom Depuydtand Ivo F. J. Vankelecom (2013).
Forward and pressure retarded osmosis: potential solutions for global
challenges in energy and water supply. Chemical Society Reviews, 42,
6959-6989.

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