1. Forming a new Energy Storage Collaborative Network David Surplus – Director 6th December 2012

2. The logic progression... Northern Ireland has high wind penetration,
with relatively low electricity demand,
so the grid is overloaded at peak wind,
resulting in wind farms being curtailed.
We therefore need storage, interconnection and demand side management

3. The Goal: Deliver the Lowest-Cost Peak Power
LightSail Energy
1st gen product
LightSail Energy
v2 with underground storage
Competes with conventional generation without subsidies.
Half the price of batteries.

4. Compression is hot business

5. Store heat as well as compressed air
USES PROVEN PISTON ENGINE TECHNOLOGY. ONCE EFFICIENCY IS PROVEN, TECHNICAL AND MANUFACTURING RISK IS LOW
A motor drives the compressor piston
Water spray absorbs the heat of compression
Droplets are separated from the compressed air-water aerosol, cooled in a heat exchanger, and reused
The mechanism is reversible to extract energy from the compressed air

6. A Fully Reversible Machine
LightSail Energy Confidential

7. Add waste heat to increase return trip efficiency
Energy output at T
Energy output at T=15oC
Get more energy output
Energy output at T / Energy output at T=15oC
100% Round trip efficiency
If multiplied by 1.43 gives
Use hotter water
70% Round trip efficiency
120oC water

10. First-Generation Product Shipping in Q1-2014 Breakthrough Price and Service Life
Power Unit
500 kW modules
70% round-trip efficiency
20+ year lifetime
Selling price ≈ $1000 per kW
Storage Unit
1 MWh modules
Proprietary filament-wound tanks
Shipping container form factor
ASME certified
Selling price ≈ $200 per kWh
LightSail Energy Confidential

11. LightSail NI Ltd
RAES DRAMATICALLY INCREASES THE EFFICIENCY OF COMPRESSED AIR ENERGY STORAGE
Hello from LightSail Energy,
We’re developing a revolutionary energy storage system called Regenerative Air Energy Storage.
A lot of energy storage companies talk about supporting renewables, like solar and wind. But they supply only 1% of the world’s energy!
I want to talk about the other 99%.
This is how to grow the grid.
A new Northern Ireland based Joint Venture to serve the European, African and Middle Eastern Markets
LightSail Energy Confidential

12. Energy Storage Collaborative Network
RAES DRAMATICALLY INCREASES THE EFFICIENCY OF COMPRESSED AIR ENERGY STORAGE
Hello from LightSail Energy,
We’re developing a revolutionary energy storage system called Regenerative Air Energy Storage.
A lot of energy storage companies talk about supporting renewables, like solar and wind. But they supply only 1% of the world’s energy!
I want to talk about the other 99%.
This is how to grow the grid.

13. LightSail NI Ltd
Highly efficient, low cost bulk energy storage can bring many benefits...
Matching electricity supply with demand
Reduction of winter peak demand on existing power stations
Avoidance of wind farm curtailment when there is too much wind generation
Avoiding the need for additional grid capacity when connecting new wind farms
Avoiding the need to upgrade electricity infrastructure including lines and sub-stations
Storing night time energy to be delivered during the day
Allowing higher penetrations of intermittent renewables onto the grid
Increasing security of supply
Reducing the dependency on imported fossil fuels
Increasing the likelihood of achieving ambitious renewable energy targets
Absorbs waste heat which allows good quality CHP at biomass plants for example
Reduces the spinning reserve requirement
Provides reactive power ancillary services – power factor control
Reduces availability payments to fossil generators and alleviates fuel poverty
Should allow fossil fuelled thermal power stations to be retired from service
Stimulation of local manufacturing and project development
RAES DRAMATICALLY INCREASES THE EFFICIENCY OF COMPRESSED AIR ENERGY STORAGE
Hello from LightSail Energy,
We’re developing a revolutionary energy storage system called Regenerative Air Energy Storage.
A lot of energy storage companies talk about supporting renewables, like solar and wind. But they supply only 1% of the world’s energy!
I want to talk about the other 99%.
This is how to grow the grid.
LightSail Energy Confidential

14. LightSail NI Ltd Other more subtle technical benefits...
Wide value chain impact – generation, transmission, distribution and consumer
Generation:
Intermittent generation is smoothed
Reduced ramp rates when wind farms go online and/or come offline
Improved controllability when wind farms go online and/or come offline
Generation capacity firming helps to maintain production within predictable limits
Transmission:
Provision of local dynamic voltage support to help improve network stability
Provision of instantaneous synchronised reserves
Reduction in the need for standby fossil fuel fired OCGTs to be kept available
Provision of support for frequency and area regulation
Distribution and consumer:
Lowering of pressure on highly stressed parts of the grid operating near full load
Lowers the need for investment in infrastructure to cope with peak loads
Time-shifting from low to high tariff periods optimised return on investment
RAES DRAMATICALLY INCREASES THE EFFICIENCY OF COMPRESSED AIR ENERGY STORAGE
Hello from LightSail Energy,
We’re developing a revolutionary energy storage system called Regenerative Air Energy Storage.
A lot of energy storage companies talk about supporting renewables, like solar and wind. But they supply only 1% of the world’s energy!
I want to talk about the other 99%.
This is how to grow the grid.
LightSail Energy Confidential

15. Questions David Surplus – Director 6th December 2012