How Should Northwestern Go Green?
Team B
Team Members
Emily DerrickKristy MadelineMyles ShelbyBrandonDakotaJeff
Green Project
Research ways that Northwestern Lehigh School District can:
1. Cut energy costs
2. Become more eco-friendly
Topics
Cut our paper consumptionCut our energy consumptionAlternative fuel options for our busesAlternative energy options for our
school buildings
Cutting Paper and Saving Trees
Cutting Paper
District-wide use 1040 cases a year5000 sheets of paper per case$27.57 per case
Paper Cont.
Increase spending by $2350 next yearSpend $30,000 a yearUse over 5,400,000 sheets of paper a
year
More Paper
Suggesting 25% cutSaves 1.3 million sheets Saves $7,000 a year
How to Cut
Purchase TextbooksCan save 9000 sheets by buying
textbooks for two classesStop sending memosSend emails and have email replies
Green Paper
One tree produces 8,333 pieces of paper
Our district uses about 650 trees a year
By reducing paper use by 25% we would save 162 trees per year
Saving Money and Energy
Cutting Energy
Focused on electrical cuts 4 ways to cut electricity:
1. Shut off Laptops
2. Shut off Desktops
3. Turn off Lights
4. Turn off TVs
Laptops
Most laptops stay in sleep modeUse 2.4 watts per hour450 Student LaptopsSave around $466 by shutting them off
Desktops
5 computer labs30 computers per lab72 watts(idle mode)
per hour
Desktop Savings50% Left on Idle:
Save $2,000a yearSave 130 KWa year
100% Left on Idle:Save $4,000a yearSave 260 KWa year
Lights
Shut off lights 4 hrs. a day42 Lights per class40 Watts
an hour
Lights Savings
One Teacher:Save $120 a year6.7 KW a year
100 Teachers:Save $12,000 a year670 KW a year
Televisions
Shut off except:First thing in the morningOver Flexes
Show Morning show, slides, flex show100 TVs (approximately) 165 Watts an hour
Savings
During School Day:Save 91 KW per daySave $1,600 a year
20% of TVs left on after school:Save 79 KW per daySave $1,400 a year
Total Electrical Savings
Shut off laptops, desktops, lights, and TVs
Save $20,900 a year(high school)Save $83,000 a year (District)
Natural Gas and Transportation
Alternative Fuels
40 BusesAvg. Bus Age= 8.5 Years7 MPGDiesel Cost- $2.23 per gallon$5,000 Per Bus a year (fuel costs)
Natural Gas
Costs:Bus Costs $130,000
Savings: Save around $3,500 in Fuel CostsCosts $1.10 Per Equivalent of Diesel Gallon
Other Savings
Grants:50% Grant:
Save $65,000Pay $65,000
75% Grant:Save $97,500Pay $32,500
•Replace Oldest Buses:Save around $40,000 in repairs per year
Green Buses
Natural GasCuts Emissions 90%
Problems with DieselIncreases Asthma in ChildrenIncreases chance of cancer by 46%
Alternative Energy
Solar Energy
Stores 193 KW per Hour1.6 Million KW stored per year4.2 Million KW used in District (per year)Stores energy even when sun isn’t out
(cloudy or night)
Costs
$1.5 Million per panelPays for itself in 3 years$500,000 per Year for three YearsLasts for 40 years
Savings
Doesn’t actually cost $500,000Saves around $169,000 a year(energy
stored)Net cost around $331,000 per year
Grants
50% Grant:Save $165,000Pay $165,000
75% Grant:Save $248,000Pay $83,000
TOTAL POSSIBLE SAVINGS TOTAL POSSIBLE SAVINGS (District Wide)
Ways to saveSavings in One Year
Savings in 5 Years Savings in 10 Years
Turn off TV's $ 14,850.00 $ 74,250.00 $ 148,500.00
Reduce Paper by 25% $ 7,443.90 $ 37,219.50 $ 74,439.00
Turn off Laptops $ 1,866.24 $ 9,331.20 $ 18,662.40
Turn off Desktops $ 18,662.40 $ 93,312.00 $ 186,624.00
Turn off Lights 4 hrs a day $ 48,384.00 $ 241,920.00 $ 483,840.00
Fuel Savings $ 3,475.32 $ 17,376.60 $ 34,753.20
Solar Savings (After 3 Years) $ 169,068.00 $ 845,340.00 $ 1,690,680.00
TOTALS $ 263,749.86 $ 1,318,749.30 $ 2,637,498.60
Carbon Footprint
Approximate Numbers
Footprint Cont.
Shows need to be greenIf pay off our Carbon Footprint than it
would cost $50,00013 Million Lbs. of CO2 (per year)
6500 Tons of CO2 (per year)267,000 Trees486,000 Charcoal Barbecues
Conclusion
Places to saveHuge Payoff with no costHope to influence some changes in the
next couple of years
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