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Kioa Island School  (1249 Cakaudrove)

About

Docs & Links

Specifications

Works & Maintenance

CO2 & $s

Contacts

Charge data

Term Reports

Procedures

Google map

About

In 1946 Kioa Island, in the north east of Fiji, was acquired by 110 people from Tuvalu whose island was over populated. The population has grown and now the small but vibrant school has over 100 students.

Prior to the solar system the school’s highly valued electrical equipment included three computers, one printer, a photocopier, PA system and laminator. Limited daytime power to the school was supplied by a small generator. The school has night power supplied by the village generator that runs for three to four hours in the evenings. Therefore power generation and storage needs (batteries) are less than is other schools who need power for night study and/or teachers quarters.

School Role & Facilities
Students:
Teachers:
Classrooms:
Kindergarten:
Offices:
Library/computer area:
Teachers homes in the school grounds:
Boarders (live-in students):
Hostels (Boarding houses):
Dining rooms:
Date entered:
Project Funding

Various supporters


Carbon Dioxide and Financial Savings
Document

Kioa Island School

Annual school fuel saving (litres) (1)

700

Annual fuel saving 1 teachers' homes getting solar (litres) (2)

50

Annual cartage saving (litres) (3)

105

Total annual fuel saving (litres) (4)

890

Fuel saving over 30 years (litres)

26,700

Annual CO2 saving (kgs)

2,269

CO2 saving over 30 years (kgs)

68,085

Annual AUD saving (8)

$ 3,180

Annual USD saving

$ 2,162

Annual FJD saving

$ 4,770

30 yrs AUD saving

$ 95,400

30 yrs USD saving

$ 64,860

30 yrs FJD saving

$ 143,100

Total of All It's Time Solar Schools

Total annual school fuel saving (litres)

20,540

Total annual fuel saving 91 teachers' homes getting solar (litres)

4,150

Total annual cartage saving (litres)

3,081

Total annual fuel saving (litres) (4)

27,886

Total fuel saving over 30 years (litres)

836,580

Total annual CO2 saving (kgs)

71,103

Total CO2 saving over 30 years (kgs)

2,133,277

Total annual AUD saving (8)

$ 78,672

Total annual USD saving

$ 53,489

Total annual FJD saving

$ 118,008

Total 30 yrs AUD saving

$ 2,360,160

Total 30 yrs USD saving

$ 1,578,540

Total 30 yrs FJD saving

$ 3,482,640

Assumptions

Fuel cost in the islands in AUD/litre (5)

2.00

Fuel cartage consideration % (3)

0.15

Annual fuel consumption per teacher's home wired (litres) (2)

50.00

Annual generator maintenance consideration AUD (6)

1500.00

CO2 produced per litre of fuel burned (kgs) (7)

2.55

AUD to USD conversion rate used

0.68

AUD to FJD conversion rate used

1.50

Notes

(1) This is the annual fuel consumption based on reporting from the school at the time of school survey and affirmed at the time of installation. It refers to direct fuel use by the school, not including teachers' homes.

(2) The fuel consumption of teachers' homes varies considerable between homes and over time. Their sources of energy varies from their own small generators to shared generators, still some use kerosene for lighting and some small solar (often failing) for lights and charging. Recently on Beqa Island two of the 7 households at one school were each using 10 litres of fuel per week and some were using very little. So, we have chosen the conservative underestimate of each household saving of 2 litres per week (approx. 5 kgs of CO2).

(3) Most schools have a cost to get fuel to the school - usually small boats and car/truck on the mainland. The costs vary from small amounts to some schools where the cartage cost is almost the same as the cost of the fuel itself. The cartage consideration (dollar and carbon cost) is a percentage of the total fuel consumption, because it varies widely from school to school we have chosen quite a conservative estimate.

(4) Includes cartage and teachers' home consumption estimate that therefore contribute to the total CO2 saving. But we do not include the teachers home in the financial saving - rather we just refer to the savings from the school generator.

(5) This is the current published diesel price in Fiji presented in AUD. Often the islands pay a higher price, but that is not factored in, so generally the price will be a small under estimation.

(6) Generators often require repairs and eventually replacement. That cost varies significantly from school to school, so a conservative value is applied to represent this component of cost/saving for all schools. It is not possible to calculate that accurately for every school, hence the estimate across all.

(7) Burning diesel produces CO2 at a rate of 2.68 kgs/litre, whereas petrol produces it at a rate of 2.31 kgs/litre. We have chosen 2.55 as the approximate for our calculations because there is more diesel used than petrol in the school generators.

(8) The fuel savings in the teachers' homes are not included in the calculation of financial savings for the school. Although teachers are asked to make a small contribution each term (FJD70) for their now 24-hour power and this goes to the school to buy more education resources.

Specifications
Document
01 October 2011

AC Coupled

Inverters

Inverter type

SMA2012

Grid-tie inverter

Sunny Boy 2

Panels

Panel type

Silex 175

Number of panels

8

Array (watts)

1400

Mountings

Mountings

Ground mounted

Brand

Clenergy Solar Terrace II

Batteries

Battery type

200Ah Lead-Acid

Number of batteries

3

Kilowatt hours

5.0

Batteries mounted

IBR Prewired Cabinet


General electrical works

The original lead acid batteries were replaced by a small set of 3 x 200Ah units (there are no teachers quarter requiring night power, so this small system performs well). Lithium is not an option without changing inverters because this early system is a 12V configuration and the current lithium batteries we use are 48V. When the current set of lead acid batteries get to end of life we will consider changing the system configuration to 48V and larger lithium battery bank.

Considerable wiring works were conducted at the time of original installation and some repairs, including one panel replacement, were required in 2016 after cyclone Winston.


Partners

Solar contractor

CBS Power Solutions

General electric works constractor

CBS Power Solutions

Contacts
Document

Enter all contacts e.g School Manager, Head Teacher, Principal. The more the better.
If a contact changes, for example the principal, edit the old record to show the new person’s details.

First Name Last Name Position Phone Email FB Note Edited
Charge data
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Document

This data is currently only available to the school and admin.

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