Cost reduction in the value chain of solar mini grid installation in Nigeria.

Hasna KhanPSL-USA

Capex distribution of Small Solar mini grid (30kW)

in India ‘Utility in a Box’

PV Panels18%

Battery Bank20%

Diesel Generator7%

Inverter11%Charge Controller

5%

Fencing, civil, Misc5%

Poles & Cables15%

Structure & Installation

8%

Cables4%

BoS7%

CapEx of Solar Mini Grids (30kW) in India - opportunities for further cost reductions

18%

100%

20%7%

11%5%

5%

15%8% 4%

7%

PV panels Battery bank Dieselgenerator

Inverter Chargecontroller

Fencing &civil work

Poles &cables

Structure &installation

Cables Balance ofsystem

Total

Current CapEx$1.65/watt* for

30kW system

Potential for future cost reduction

Impact of storage on Capex unit cost of Solar Power Plant

(200kW and 500kW)

1 2 3 4 5 6PV(kW) 500 500 500 200 200 200Batt Bank(kWh) 400 800 1600 160 320 640Backup Load(kW) 200 200 200 80 80 80Backup Time(Hr) 1 2 4Backup Time(Hr) 1 2 4

0

1

2

3

4

5

0100200300400500600700800900

10001100120013001400150016001700

Hou

rs

Plan

t Size

kW

200 kW Plant

1.29 $/Wac

1.61 $/Wac

2.26 $/Wac

1.40 $/Wac

1.78 $/Wac

2.43 $/Wac

500 kW Plant

Costs: CapExSolar mini-grid in India (30kWp)

• Controls load, time-of-use and payments for individual users (prepay & post-pay)

• Designed for off-grid applications; can be modified for grid connectivity

• Shared architecture: up to 6 meters/ users per box

• Comprehensive system-wide usage data available locally and centrally

• Integrated payment of appliances for on-bill financing & Mobile Payments

• Customers can track consumption via smartphone or in-house display unit

The ”Utility-in-a-box” (UiB) The smart-meter

• Pre-assembled, easy to install system (

(UiB) in India

UiB and smart-meter: In the field

3.255 3.1933.400

3.844 3.8303.685

3.221

2.536 2.576 2.542

3.1933.353

0

500

1.000

1.500

2.000

2.500

3.000

3.500

4.000

4.500Summer

A typical 30 kW plant can produce, on average over the year, 3,200 kWh per month, or about 105 kWh per day

Peak Winter Mild Winter

Dec

Source: Data from SPI plant in Bihar, December 2017 through November 2018

Jan Feb

Mar Apr May Jun Jul Aug

Sep

Oct Nov

Max. solar output; units (kWh) per month

30 kWp Solar UiB Plant (Bihar, India)

The UiB Design eliminates the need of a Control Room, thus reducing the need for major civil work at site.

Modular Control Panels along with Battery Box

The capacity of the plant can be increased as required by adding pre-assembled control and battery boxes.

All Control Panels are design engineered to withstand heat, dust and water

All Panels are designed IP54 and placed under the panels.

Scalable Model – Additional Panels can be added to increase capacity.

Both the AC Power and Stored Power can be increased as the demand in the rural area increases.

Smart meters with distribution line using RF Mesh Network

pre-pay and post-pay; remote monitoring and load management; Including a new feature on-bill financing of appliances

69% 72% 77%92% 96% 100%

Cost in the Value Chain of Solar Mini grids for Nigeria

 

 

Cost(USD)

USD/Wdc

USD/Wac

Base Cost (enhanced UiB30)

 

78,000

2.50

$3.82

 

 

 

 

Export Tax (India)

 

3,900

5%

 

Shipping (India-Nigeria)

5,000

 

 

Customs (Nigeria)

17,380

20%

 

Landed Cost

 

104,280

3.34

5.11

Local Transport

4,000

 

 

Installation

5,000

 

 

Total cost

113,280

3.63

5.55

Price of installed mini grid (USD)

 

124,800

4.00

6.12

Adding commercial loads to household and PUA

Daily units consumed, kWh

~125

1117 3 5

32 710

1820

Basicappliances

EEappliances

Basicappliances

EEappliances

Irrigation WTU Oil expeller Flour mill CommercialEEA

Total

Households Shops Small enterprises

Summer Mild Winter

Peak Winter

-

500

1.000

1.500

2.000

2.500

3.000

3.500

4.000

4.500

5.000

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Uni

ts P

er M

onth

Solar Diesel Maximum Solar Battery Charge Consumption

Cost reduction in the value chain of solar mini grid installation in Nigeria. Capex distribution of �Small Solar mini grid (30kW)�in India ‘Utility in a Box’� CapEx of Solar Mini Grids (30kW) in India �- opportunities for further cost reductionsImpact of storage on Capex unit cost �of Solar Power Plant�(200kW and 500kW)Costs: CapEx�Solar mini-grid in India (30kWp)Número de diapositiva 6UiB and smart-meter: In the fieldA typical 30 kW plant can produce, on average over the year, �3,200 kWh per month, or about 105 kWh per day30 kWp Solar UiB Plant (Bihar, India)Modular Control Panels along with Battery BoxAll Control Panels are design engineered to withstand heat, dust and water Scalable Model – Additional Panels can be added to increase capacity.Smart meters with distribution line using RF Mesh Network Número de diapositiva 14Adding commercial loads to household and PUA