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Daniel Zywietz, CEO, Enerwhere Oman Energy & Water, May 24th 2016
Off-Grid Power Applications in the Middle East
Sustainable Energy. Anywhere www.enerwhere.com
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Agenda
Introduction Solar hybrid applications Challenges & solutions Q&A
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Enerwhere is a leading provider of fully financed solar solutions, headquartered in Dubai
Solar-diesel hybrid Solar-battery hybrid Solar only
EQUIPMENT RENTAL & MAINTENANCE
Power supply on a per kWh basis
POWER PURCHASE AGREEMENT (PPA)
OUR SERVICES APPLICATIONS
TEMPORARY ACCOMODATION CONSTRUCTION
OIL & GAS MINING
HOSPITALITY MANUFACTURING
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Diesel generators are a convenient but expensive source of short-term, off-grid power
Credit: Caterpillar, Aggreko, Byrne, SES websites
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Key benefits of Enerwhere’s solar-hybrid power plants over conventional diesel generators
CHEAPER & CLEANER Diesel fuel & emission savings of up to 30%
ZERO CAPEX
Fully-financed equipment – No upfront investment from users
TRANSPORTABLE Fully-containerized for rapid setup & deployment
MODULAR & SCALABLE 25 kW to multi-MW based on a simple “IKEA” principle
PLUG & PLAY Preconfigured systems for extremely simple on-site installation
RELIABLE 24/7 Through hybridization diesel-generator or battery backup
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Solar-hybrid systems reduce fuel consumption, cost and emissions
SOLAR-DIESEL HYBRID
Load
6am 12pm 6pm 12am 12am
Solar Diesel
Solar system produces power during the day
Diesel generator continuously provides grid stability and backup
Share of power supplied from solar: 30-50%
SOLAR-BATTERY HYBRID
6am 12pm 6pm 12am 12am
Solar Battery
discharging
Load
Battery charging
Solar system produces power during the day and charges batteries
Batteries provide power at night; Diesel generator used only rarely
Share of power supplied from solar: up to 100%
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Solar-diesel hybrid plants combine the low cost of solar PV with the reliability of conventional diesel generators
Enerwhere modular solar PV array
Off-grid customer facility
Enerwhere hybrid controller &
remote monitoring system
(+ storage option)
Diesel generators
Enerwhere solar-diesel hybrid system overview
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1
2 4
Key components
Customer requires reliable power in remote location
Diesel gensets guarantee grid stability and provide back up at night & during bad weather
Solar array generates cheap, clean electricity during the day
Hybrid control system manages solar-diesel interaction and provides remote monitoring & control capabilities
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Credit: SMA
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Enerwhere offers three commercial models tailored to various situations and power consumption patterns
Description Customer purchases equipment upfront Enerwhere installs,
operates and maintains
Enerwhere owns, installs, operates and maintains equipment Customer pays
monthly rental regardless of load
Enerwhere owns, installs, operates and maintains equipment Customer pays only
for each kWh used
Sale + O&M Rental PPA
Application Permanent/ long-term site, remote/ or without grid connectivity Funding available
Short-term need, close to grid but without visibility on connectivity Small sites (<100
kW) with unpredictable load
Short-term need, close to grid but without visibility on connectivity Large sites (>100
kW) and/or with predictable load
Enerwhere’s unique value proposition
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Agenda
Introduction Solar-hybrid applications Challenges & solutions Q&A
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Load profile: Camps & Villages case study
SSV camp, Sir Bani Yas island • 600 occupants
• Kitchen • Laundry • STP • Operating 7 days
per week, 24 hours per day
Solar-diesel hybrid plant: • 350 kWp solar • 2 MVA diesel generators (1 x 635 kVA,
2 x 500 kVA, 1 x 350 kVA) • Enerwhere hybrid manager
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Solar generation peak matches perfectly with load peak, thereby reducing peak load of the diesel generators
0
100
200
300
400
500
600
700
800
900
1000
00:0
0 00
:50
01:4
0 02
:30
03:2
0 04
:10
05:0
0 05
:50
06:4
0 07
:30
08:2
0 09
:10
10:0
0 10
:50
11:4
0 12
:30
13:2
0 14
:10
15:0
0 15
:50
16:4
0 17
:30
18:2
0 19
:10
20:0
0 20
:50
21:4
0 22
:30
23:2
0
kVA
Solar output (kVA) Net DG load (kVA) Load (kVA)
DG peak: 809 kVA (7:15 pm)
Solar peak: 146 kVA (12:35 pm)
Load peak: 870 kVA (12:30 pm)
Camps & Villages: Summer load curve SSV camp, Sir Bani Yas island, Abu Dhabi, 17 August 2015
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Solar share is much higher in winter, dramatically reducing daytime generators loads…
0
50
100
150
200
250
300
350
400
00:0
0 00
:50
01:4
0 02
:30
03:2
0 04
:10
05:0
0 05
:50
06:4
0 07
:30
08:2
0 09
:10
10:0
0 10
:50
11:4
0 12
:30
13:2
0 14
:10
15:0
0 15
:50
16:4
0 17
:30
18:2
0 19
:10
20:0
0 20
:50
21:4
0 22
:30
23:2
0
kVA
Solar output (kVA) Net DG load Load (kVA)
Load peak: 350 kVA (12:30 pm)
Solar peak: 240 kVA (1:35 pm)
Camps & Villages: Winter load curve SSV camp, Sir Bani Yas island, Abu Dhabi, 15 February 2016
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…to the point that the hybrid manager need to reduce solar output to keep the generators running in reverse
0
50
100
150
200
250
300
350
400
00:0
0 00
:50
01:4
0 02
:30
03:2
0 04
:10
05:0
0 05
:50
06:4
0 07
:30
08:2
0 09
:10
10:0
0 10
:50
11:4
0 12
:30
13:2
0 14
:10
15:0
0 15
:50
16:4
0 17
:30
18:2
0 19
:10
20:0
0 20
:50
21:4
0 22
:30
23:2
0
kVA
Solar output (kVA) Net DG load
DG peak: 303 kVA (8:10 pm)
DG min: 13 kVA (9:10 am)
DG max/min ratio: 23:1 !!!!!!
Camps & Villages: Winter load curve SSV camp, Sir Bani Yas island, Abu Dhabi, 15 February 2016
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Agenda
Introduction Solar-hybrid applications Challenges & solutions Q&A
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Challenges & Solutions
Extreme (20x) load variation summer / winter
Intra-day load variation (up to 5x)
Phase balancing issues
Impact of minimum load on generator efficiency
High surge loads / transients
Typical Solar-hybrid System Challenges Solutions
Careful data analysis
Resilient design (N-1 / N-2)
More DG sizes
Hybrid manager
Reactive power management
+ Demand management
+
Storage (battery / thermal)
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Agenda
Introduction Solar-hybrid applications Challenges & solutions Q&A
17
Q&A
• Do the economics make sense?
• Do solar panels work with all the heat in this region?
• And what about the dust? How do you clean the panels?
• Can we move the system to the next site?
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Thank you!
www enerwhere com