Gravitricity is developing a gravity-based energy storage system using disused mine shafts. The system can provide rapid, durable, and low-cost grid-scale energy storage to support the global transition to renewable energy. Gravitricity is raising £500,000 to fund a 250kW demonstration project and expand their team to develop a 4MW prototype. They are seeking this seed funding from angel investors and strategic partners to unlock £650,000 in UK government innovation funding and advance their gravity-based storage technology.

1. Charlie Blair
Managing Director
Charlie.blair@Gravitricity.com
+44 7870 689 983

2. Charlie Blair
Managing Director
Charlie.blair@Gravitricity.com
+44 7870 689 983

3. Image Credit: Wikipedia Commons. Market Size: Bloomberg New Energy Finance Nov 2017
Renewables
Electrification
Full Energy
system
transition
Nuclear
Massively
increased
flexibility required
$3.2 billion 2017
$103 billion to 2030
Goal: keeping the lights on during
a global energy transition

4. Image Credit: Wikipedia Commons. Market Size: Bloomberg New Energy Finance Nov 2017
Renewables
Electrification
Full Energy
system
transition
Nuclear
Massively
increased
flexibility required
Goal: keeping the lights on during
a global energy transition
125 GW to
2030
$103 billion to
2030

5. Team
Edinburgh

6. Industrial Consortium- route to market

7. Technical Characteristics (USPs)
Low levelized (lifetime) cost of storage.
Rapid response: full rated power <1s
Long cycle life with no cyclical degradation. (75,000+
cycles)
High efficiency: >85%. As good or better than all
alternatives
Versatile Power/Demand ratio: c-rate up to 8 or more.
Small footprint: <30mx30m for 8MW facility. Can be
sunk below ground. No locational constraint at new-
shaft sites
No parasitic loads, no standing losses, no depth-of-
discharge limits.
Why this matters
LCOS is the key metric for comparing storage options and
creating project ROI. Gravitricity’s main competitor is Li-Ion
batteries
Enables access to highest value revenue streams (ie
‘Enhanced Frequency Response’), and rapid-reaction backup
power
Major components have lifetime beyond 20yrs. (Most >50
years). Enables project duration of 25yr+, like other energy
technologies.
Reduced losses enables revenue generation even when
differentials are not significant. Thermal generation not
problematic
Future versatility is essential. Increased Power can be added to system at
very low cost. Modular energy increases can be added at later dates
Minimal above-ground disruption. Less important at existing mineshaft sites.
Very important at new-shaft sites, which can be deployed exactly where
storage is required, including urban sites.
All make for better long-term commercial projects than chemical
energy storage alternatives.
Unique Selling Points

8. Applications
FAST response (<1s)
DURABLE (>75,000 cycles)
CHEAP (lcos <$150/kWy)
INDUSTRIAL USERS
UPS, Power quality, Peak
reduction (TRIAD), upgrade
avoidance
Mines, Data Centres, etc
GRID
Frequency, balancing,
upgrade avoidance
Transmission & Distribution
GENERATORS
Power Quality, upgrade
avoidance, hybrid services
Wind, solar, gas

9. Initial Market (2020-): Mines
Europe, SA, Australia, USA
Disused mines (UK, Europe, US): Frequency Response
plus stack of revenues to T & D grid, plus onsite users or
generators.
Operating mines (SA, Aus, Canada): Mine UPS / backup
power, peak cost reduction & other services.
Later Market (2025-): New Shafts
Global
Energy storage as permanent grid infrastructure – DNOs,
islanded grids, industrial users. Shaft can be sunk exactly
where storage is required = Primary dispatch for site use
(peak shaving or UPS); secondary dispatch to maximise
revenue
Confidential, please do not share. 2018
Market

10. R&D and Commercialisation
SEED A B
£0.5m £3-4m growth
~£7m R&D Programme
Plus innovation funding

11. • Intellectual Property. Three patents filed since
2011. British and international. Core know-how,
providing barrier to entry, lies in the control system,
dynamic simulation and electro-mechanical
integration.
• £650,000 grant from UK Government for 250kW
concept demonstration project in 2018/19.
• Close working relationship and NDAs/MOUs
in place with 12 strategic partner companies,
ranging from winch manufacturers to ancillary
services aggregators.
Traction

12. Ask
Gravitricity is raising £500,000 in a SEED equity round in
early 2018.
This will unlock £650,000 innovation funding from UK
Government and will fund:
• 250kW demo and test system;
• engineering and commercial team expansion;
• site development of 4MW full-scale prototype in a UK
mineshaft.

13. Ask
SEED Round 2018.
£500,000
Angels, Angel Consortiums, Strategic Venture Arms, please
contact us.
EIS Pre-assured. Investors with experience in Power Systems,
Heavy Engineering, Mining encouraged.
Charlie Blair
Managing Director
Charlie.blair@Gravitricity.com
+44 7870 689 983