For over 15 years, Sisyan LLC has designed and optimized seawater PVRO plants in Baja California Sur, Mexico. The declining price of solar panels and batteries make this system a practical solution today for both on and off grid applications.

The Need For Renewable Desalination

  • By 2030, water demand is projected to exceed supply by 40%. The stress on natural water systems can be seen today in every part of the world.
  • In addition to all methods of water recycling and conservation, new sources are imperative. Seawater is the only source that is drought-proof and inexhaustible.
  • Reverse Osmosis is a mature technology, and can operate near the efficiency limits imposed by the laws of physics. However, even the best desalination plants require a large amount of new energy capacity. This coincides with global efforts to curb greenhouse gas emissions.

WATER ENERGY NEXUS

AS CLIMATE CHANGE CONTRIBUTES TO WATER SHORTAGES, FOSSIL FUELS ARE NOT A PART OF THE SOLUTION

Price Trends

Solar Panels

In the last six years, solar panel prices have dropped 75% to around $0.50 / watt.  They are projected by SunEdison to fall under $0.25 / watt by 2030.

Energy Storage

Previously, lead acid batteries accounted for around 60% of the cost of off-grid solar desalination. New storage technologies make off-grid installations preferable in some locations.

Reverse Osmosis

Reverse Osmosis achieved steady price declines until recently. Opportunities for further efficiency improvements are now approaching limitations set by physics.

Grid Energy

Though renewable energy is getting cheaper, most utilities are slow to adapt. Additionally, electric grids are outdated and require significant investment.

THE TECHNOLOGY

Some of the technologies we employ

UF

ULTRAFILTRATION

Membrane-based pretreatment that extends the life of RO components. Also allows the mixture of brine streams, significantly reducing discharge salinity.

VFD

VARIABLE FREQUENCY DRIVE

Unique to our application, VFDs take DC current, eliminating the need for expensive inverters.

APP

AXIAL PISTON PUMP

The most efficient positive displacement high pressure pump available. Light weight and low maintenance.

APM

AXIAL PISTON MOTOR

Recovers the pressure from the brine stream after the desalination process and applies it directly to the torque of the pump shaft.

RO

REVERSE OSMOSIS

A mechanical desalination process that pushes pure water through a semi-permiable membrane. Solids are washed away with the crossflow of the brine.

Seawater Desalinated By Our Pilot Projects

0 Million Gallons
0 Greenhouse Gas Emissions

Downloads

Sisyan M-30 Photovoltaic Seawater Reverse Osmosis Module

PV Seawater Reverse Osmosis Module designed for large hotels, communities, and cities.

Demand Response Desalination

A grid-connected application of multi-module reverse osmosis offering a flexible energy demand.

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Yan Kunczynski, ME PE
Yan Kunczynski, ME PEFounder
Yan is the founder and creative force behind Sisyan LLC, with over 50 years of experience designing, manufacturing, and deploying innovative solutions. Yan has been a licensed California contractor ‘A’ since 1963 and has filed over 20 patent applications. Yan is best known for his contributions to aerial tramways and automatic people movers.

More From Sisyan

In addition to PVSWRO desalination, Sisyan is also an innovator in solar thermal water heating (flat plate and vacuum tube), photovoltaic water heating, and ballast-based solar panel racking systems.