Alternatives to Grid Connection: Energy Storage:
David SurplusChairman, B9 Energy Group
The Institute of Healthcare Engineering
and Estate Management
Lecale DSU Build-up
DDFFRE
11kV Network (3-phase)
Lecale DSU
33kV sub-station (Community Sub-station)
Farm scale ADICAES (N I Energy Storage Demonstration Park)
“Lecale” Aggregated DSU for
11kV circuits
• Aim to be self-sufficient in electricity• Aim to have cheaper, greener and more secure power supplies• More than 70 x rural 33kV sub-stations in NI
250kW wind turbinesSolar PVAnaerobic Digestion2nd life traction battery chargingAmmonia production300 houses + EVs as a captive customer base“Seagen” Tidal test site
NB: Ammonia can power...• Tractors• Fishing boats• Ferries• Standby gen-sets upsold as...• Peak lopping gen-sets
Compression is hot business
“Isothermal Compressed Air Energy Storage” Stores heat as well as compressed air
Power Unit• 500 kW modules• 70% round-trip efficiency• 20+ year lifetime• Selling price ≈ $1000 per
kW
First-Generation Product Shipping in Q1-2015 Breakthrough Price and Service Life
Storage Unit• 1 MWh modules• Proprietary filament-wound
tanks• Shipping container form factor• ASME certified• Selling price ≈ $200 per kWh
LightSail Energy Confidential
Small wind planning applications
Small wind planning applications
Offshore windfarm
Microgrid revenue streams...
• Arbitrage – Buy at £20 to £30 / MWhrSell at £80 to £250 / MWhr
• “Load on Demand” services to avoid external curtailment(30% of wind strike price?)
• Direct sales on long term fixed price (+RPI) basis• Consideration for avoided cost of grid upgrade• Ancillary services: Reactive power management
Voltage regulationPossible provision of inertia
• Capacity market payments
Other microgrid benefits...
• Additional microgrid revenues allow voluntary reduction of ROC revenues on single generator projects – easing price rise pressure
• Security of supply to load customers is improved • Autonomous operation possible - to ride through
central system blackouts if necessary
Internet
Wireless Connection
AC
DC
Ethernet
Home scale Microgrid
Industrial scale microgrid
Thank you