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South Taveuni High and Primary Schools  (2573-1247 Cakaudrove)

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About

South Taveuni High and Primary Schools located on South Taveuni, Taveuni Island, Fiji. The Schools' have 820 students are taught by 45 teachers across the two schools. Including a primary special education class.

A 6000W system was installed in 2015 to supply the, then smaller, high school (thank you then for the support of Fiji Water). The batteries were damaged by cyclone Winston in 2016 and while the system continued to give service it was not meeting our expectations. In November 2022 the system was upgraded to 15,000W size with the addition of new state of the art equipment. Together the two schools will save approximately AUD17,000 per year – and that is a significant on-going contribution to their capacity to buy resources such as computers for the schools.

The system has capacity to power the school, but if needed on occasions the back up generator will top up the batteries, with the schools' commitment to a proactive approach to energy conservation, it's anticipated that use of the generator will be minimal. The school has 21 teachers’ homes in the school precinct that were not included in the scope of works – full wiring and additional solar capacity are being considered as a future project.

Thanks to the lead financial sponsor, Clenergy, and a range of supporters the system is now supplying 24hr power for both schools.

School Role & Facilities
Last Updated:
Students:
Teachers:
Classrooms:
Kindergarten:
Offices:
Library/computer area:
Teachers homes in the school grounds:
Boarders (live-in students):
Hostels (Boarding houses):
Dining rooms:
Images Videos Plastics Cyclone (pre upgrade)

Carbon Dioxide and Financial Savings
Document

South Taveuni High and Primary Schools

Annual school fuel saving (litres) (1)

4,800

Annual fuel saving 0 teachers' homes getting solar (litres) (2)

Annual cartage saving (litres) (3)

720

Total annual fuel saving (litres) (4)

5,520

Fuel saving over 30 years (litres)

165,600

Annual CO2 saving (kgs)

14,076

CO2 saving over 30 years (kgs)

422,280

Annual AUD saving (8)

$ 12,540

Annual USD saving

$ 8,527

Annual FJD saving

$ 18,810

30 yrs AUD saving

$ 376,200

30 yrs USD saving

$ 255,810

30 yrs FJD saving

$ 564,300

Total of All It's Time Solar Schools

Total annual school fuel saving (litres)

21,580

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

4,150

Total annual cartage saving (litres)

3,289

Total annual fuel saving (litres) (4)

29,019

Total fuel saving over 30 years (litres)

870,570

Total annual CO2 saving (kgs)

73,991

Total CO2 saving over 30 years (kgs)

2,219,949

Total annual AUD saving (8)

$ 81,238

Total annual USD saving

$ 55,233

Total annual FJD saving

$ 121,857

Total 30 yrs AUD saving

$ 2,437,140

Total 30 yrs USD saving

$ 1,656,990

Total 30 yrs FJD saving

$ 3,655,710

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 January 2015

A 6000W system was installed in 2015 to supply the, then smaller, high school. The batteries were damaged by cyclone Winston in 2016 and while the system continued to give service it was not meeting our expectations. In November 2022 a 15,000W (4500W using the original panels + 27 x new Canadian Solar panels were used) plus new inverters and batteries.

DC Coupled

Inverters

Inverter type

Outback FlexPowerThree

Charge controller

Panels

Panel type

Mixed brand panels see notes

Number of panels

45

Array (watts)

14760

Mountings

Mountings

Ground mounted

Brand

Clenergy Solar Terrace II

Batteries

Battery type

Simpliphi PHI 3.8 Lithium Ferro Phosphate

Number of batteries

12

Kilowatt hours

3.8

Batteries mounted

Simpliphi Boss 12 Cabinet

Other commnets

NOTE: the final project is a mix of Clenergy ground and roof mount configuration. 18 x Yingli 250W panels (was the original array we installed in 2016) then 2022 added 27 x Canadian 380W , 4 x Outback chargers, 12 x Simpliphi PHI3.8kwh Lithium batteries in a BOSS12 cabinet, 1 x Clenergy ground mounting system and 1 x Clenergy roof mount system

Partners

Solar contractor

CBS Power Solutions

General electric works constractor

CBS Power Solutions

Contacts
Document
Status First Name Last Name Position Phone Email FB Note Edited
Active SAVITRI SHANKARAN HOS Secondary 7726458/7638873/9970029 southtaveuni@gmail.com Feb 25
Active Jitend Narayan Primary HOS Ph: 7726455/9246689 southtaveuniprimaryschool@yahoo.com Feb 25
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General: QC Checking Instructions
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Site QC Losenana Kauvadra losenanakauvadra@gmail.com 9858388 Edit Delete
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Site QC Vasiti Talakubu vesspower@gmail.com +679 906 9151 Edit Delete
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