Seawater Pumped Hydro Electric
for Poor Grid.
James J. Nolan B.E
Organic Power Ltd.
Ireland’s Greatest Renewable Assets
• Ireland especially the west of Ireland and Mayo
in particular possess the best wind profile in
• The potential for renewable energy including on
and offshore wind and wave in west of Ireland
is approx 25,000MW (Eoin Sweeney SEAI 2012).
• Mayo Co. Co. as part of their strategic energy
plant have designated large areas of the county
as sites for wind turbines.
Proposed new Networks for 2025
The present upgrade plan for the region is to install one 400kV line into
Mayo by 2020 at the earliest.
Statement on Eirgrid Website regarding GridWest
This proposed line is totally inadequate to export the available resources of
the region in the short term and under present plans a single 400kV line
only is envisaged for the region by 2025 at earliest..
Obviously this grid structure and proposed upgrade will be totally
inadequate for the export of the available power in the short and long term.
ORGANIC POWER Ltd Solution
• The solution to the existing situation where
Ireland has available a huge natural resource
that cannot be exploited in the short term
requires a dual approach.
Organic Power Ltd plans to build a 6 Gigawatt Hour,
1,200MW Seawater Pumped Storage plant at Glinsk
Mountain, North Mayo.
Location of Proposed SPHES in Mayo
The energy storage hub is designed to accept not only wind generated
electricity, but also pumped seawater from wave device.
This site is adjacent to the coast and consists of bare mountain and topped
with peat bog.
Photo and Montage of Mountain
At Present After SPHES Installed
Overview of Project.
• The location is within 30km of most of the available onshore wind
sources in the region.
• The SPHES is ideally located to act as a node for offshore
generated wind and wave power.
• The project consists of the construction of 1,200MW MIC/ MEC of
seawater pumped storage facility on top of the mountain with the
Atlantic Ocean acting as the lower reservoir.
• The civil works consist of the removal of approx 550,000 cu.m of
peat from the top of the mountain and pumping it to dewatering
ponds at the base stabilisation.
• The 7m diameter penstock down the mountain will be approx
850m long into the turbine hall which will house 4 number
300MW (2 variable speed, 2 fixed speed) pump/turbines.
It will accept up to 1,200MW of clean but unpredictable energy for storage
at off-peak times from planned local windfarms and ocean energy projects,
and transform it cost-effectively into a high quality predictable green
electricity product by storing it for use when needed.
Second Stage the MAREX Project
• The availability of the SPHES will facilitate the variable
nature of the available wind source and wave sources.
• The power will be stored and discharge in tandem with
the provision of the Method for Atlantic Renewable
Energy Export or MAREX section of the development.
• The MAREX project will consist of :
• 1. 1,900MW+ wind generation in North Mayo and DC
connections to Glinsk
• 2. 6GWhr/cycle Energy Storage and 1,200MW Invertor at
• 3. 1 x 1,300MW HVDC transmission bipole cable pair
from Mayo to UK with 500MW link for additional wind
import from Irish Grid at Dublin.
• Organic Power Ltd in cooperation with the
relevant statutory bodies are committed to
utilising the enormous natural renewable
potential that is available in the North West
region of Ireland and getting it to market as soon
• This project will deliver on the shortcoming of
current planning of overhead grids, that are
primarily delayed by interested local groups
exercising their democratic right to the
determent of the greater good.
Thank you for attending
James Nolan: Jim@OrganicPower.ie