off-grid power applications in the middle east€¦ · load profile: camps & villages case...

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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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

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00:0

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01:4

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03:2

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05:0

0 05

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06:4

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08:2

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10:0

0 10

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11:4

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13:2

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15:0

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16:4

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18:2

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20:0

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21:4

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23:2

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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…

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23:2

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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

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01:4

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08:2

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10:0

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23:2

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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

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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