This document discusses distributed energy storage and smart DC power systems. It proposes using batteries in homes to store power purchased off-peak and use it to power lighting and electronics during peak times. This could help reduce peak demand, lower costs, and balance the grid by using low-carbon power. Storage could provide benefits like reducing outage risks, enabling time-of-use pricing, and addressing the growing demand for DC powered devices. The company, Moixa, is working on residential, community and commercial deployments of these systems, including a 0.52 megawatt-hour demonstrator project with 300 homes in the UK. Aggregate storage at the edge of the grid could potentially save billions across the UK's infrastructure costs.

1. Distributed Energy Storage & Smart DC
Time Shifting DC Demand
CIR Smart Homes & Cleanpower 2013
www.hvm-uk.com
Back up
Grid Balancing
Chris Wright, CTO
chris@moixaenergy.com
Power Growth

2. Outage Risk?
STORM: 1 in 40 UK homes lost power last Monday
ELDERLY: 1 in 12 UK Homes on ‘Priority Services Register’
OFGEM : 2014/2015 Winter generation margin to 2%
Fundamental Needs
• Lighting
• Communication
• Computing
• Media
• Security
= DC

3. UK Electricity PEAK Demand
Costly: generation, distribution – and CO2
Reducing reserve: Future time of use pricing? Gas peaker supply risk?

4. Today: Every house facing growing
electronics demand – used at peak
TBD
85 TWh / PA
2015
2020
Issues: Higher cost, Peak prices,
Fuel poverty. Efficiency waste (~ £100bn)

5. Meter Attached Storage
LOW Power DC lighting
and electronics
Daily Shift & back-up power

6. Smart local storage
Avoids peak prices, enables smart tariffs
Balancing Peak with low carbon
Enables an assured peak reduction by
using batteries powered off-peak – or
from renewables – to power lighting and
electronics at peak times.

7. Storage Importance and Value Drivers
Increasing value pushing storage to the edge
• Grid Scale Storage - significant growth market,
$114bn+ by 2017
• Distributed storage - network benefits & subsidy
additional value streams from utilities/end users
• Time shift - opportunity to reduce and shift
peak energy
• Resilience – keep the lights on to end users &
distributed generation mitigation
• Address DC Demand Growth - base & peak,
always on IOT 2020 - 50bn devices

8. Developing & deploying
Residential installs, communities, commercial, DECC project
Residential trials
Verticals: theatre, hotels,
education.
Community trials
Deployment ready for
0.5MWh demonstrator
in 300 homes

9. UK DECC – 0.52MWh Demonstrator
MASLOW system into 300 homes (2013/2014)
Systems
Technology
DC
/
IPR
Grid
Balancing
Services
LED,
PV,
DC
1&2
KWh
Systems
Networks
&
NaKons
Local
Delivery
0.5MWh’s
Storage
Consumers
Moixa is leading a bid with partners to deliver a MWh grid-scale UK
distributed storage pilot for DECC, to validate case for GWh+ by 2020

13. Aggregate storage: Hierarchy of network needs
• Enable Time of Day price benefits, DR
• Assured shift & peak energy reduction
ESCO
DNO
• Energy Services / Brokerage
• Avoid LV upgrade, G83/59
distributed
generators
• Wind Twinning
transmission network
• STOR / other EMR
central generators
• Balancing
Government
C02 – Green Deal – FIT – Social - Economic
• Mass market
Potential to save billions across UK grid / consumer cost
On demand/DR
utility
systemic
£200bn UK
Infrastructure upgrade cost
user
Daily/EE
Storage at the edge of the grid, multiple participants

14. Chris Wright, CTO
chris@moixaenergy.com
www.moixatechnology.com
Merchant
Square
2014/15