d gibson presentation to unr renewable energy minor april 06, 2016

Certified Energy ManagerLEED AP BD+C

[email protected]

Powered by Sunshine:Net-Zero Energy Homes

as a step toward100% Renewable Energy

David Gibson

1UNR Renewable Energy Minor

April 6, 2016


April 6, 2016

About David:• 2006 - BS in Civil and Environmental Engineering from

Worcester Polytechnic Institute in Worcester, MA

• Leadership in Energy and Environmental Design (LEED) Accredited Professional for Building Design and Construction through the US Green Building Council

• Certified Energy Manager (CEM) through the Association of Energy Engineers

• Led energy efficiency programs statewide from June 2014 through February 2016 for the Nevada Governor’s Office of Energy

• Reno homeowner since August 2011UNR Renewable Energy Minor

April 6, 2016

What is an Energy Audit?

UNR Renewable Energy MinorApril 6, 2016

What is an Energy Audit?

An energy audit is an analysis of energy usage, focusing on specific, practical and cost-effective ways

that energy consumption can be reduced.


Purpose of Energy Audit:

• Comfort• Health and safety• Durability• Indoor air quality• Energy and cost savings


Blower Door

10

• Used to measure air leakage before and after sealing

• Precisely calibrated• For every cubic foot

pulled out through the BD, one cubic foot is leaking in

• Helps identify air leak locations and magnitude

Economic Analysis

To determine which improvements should be made, we compare the upfront cost to the savings over time:• Simple Payback – How long does it take the

measure to pay for itself? Calculation: upfront cost / annual savings

• Return on Investment (ROI) – Can be compared to other investments (stocks, bonds, mutual funds, etc).

Calculation: annual savings / upfront costUNR Renewable Energy Minor

April 6, 2016

Actual Energy and Cost Savings

System Before Improvements

Projected Costs

Actual Costs

Actual Savings

Percent Savings

Heating $4,022 $2,686 $850 $3,172 79%

Cooling $0 $0 $0 $0 ---

Water Heating $549 $549 $385 $164 30%

Lights and Appliances $1,138 $968 $950 $188 17%

Service Charges $115 $115 $115 $0 0%

Total $5,824 $4,318 $2,300 $3,524 61%

Economic Analysis (LED Lights)

Would you give me $100 today, if I offered to pay you $10/month for the next ten years?


Economic Analysis (LED Lights)

Would you give me $100 today, if I offered to pay you $10/month for the next ten years?

$120/year x 10 = $1,200

Payback: $100/$120 = 0.833 years (10 months)

ROI: $120/$100 = 120%


Low-Flow Showerhead

• Old (standard): 2.5 gallon per minute (GPM)• New: 1.5 GPM• Savings: 1.0 Gallon per Minute• 30 min showering = 30 gallons per day• 365 days = 10,950 gallons per year

$100/year savings for electricity and water (~$60/year savings for natural gas)


Economic Analysis (showerhead)

Would you give me $20 today, if I offered to pay you $5/month for the next five years?


Economic Analysis (showerhead)

Would you give me $20 today, if I offered to pay you $5/month for the next five years?

$60/year x 5 = $300

Payback: $20/$60 = 0.33 years (4 months)

ROI: $60/$20 = 300%


EPA Recommended Thermostat Setpoints

What is the most cost-effective solar collector for a home?


Economic Analysis

• Efficiency improvements: – $7,000 cost– $3,500 annual savings– 2 year payback / 50% Return on Investment

• Solar hot water:– $6,700 cost - $2,500 rebate = $4,200 out of pocket– $420 annual savings– 10 year payback / 10% Return on Investment

• Home value increased by $52,000 in 2 years!– At least half attributed to energy improvements


April 6, 2016

Funding for Efficiency:

• Energy Efficient Mortgage (EEM)• 203(k) Rehabilitation loan• NV Energy and Southwest Gas – Rebates vary• Umpqua Bank: GreenStreet Loan• Refinance home mortgage

• Nevada Green Bank??


A Great Investment

• Investing in home efficiency is one of the best investments you can make

• Significantly reduces long-term energy costs• Guaranteed return on investment, often

exceeding 10%• Makes you more comfortable while saving you

money


Net-Zero Energy

• The final step to making my house Net-Zero Energy is to replace the oil furnace.

• Will have a ground-source heat pump installed.• Exchanges heat with the ground to provide

heating and air conditioning.

• Cost: $33,000• Federal Tax Credit: 30%


42

OLD105,000 BTU/Hour

NEW31,000 BTU/Hr

Economic Analysis


44

• 2011 Toyota Prius• 50 MPG

• 2013 Nissan Leaf• 120 MPGe• 100% Electric• Powered by Sunlight

45

Nevada Energy Consumption & Costs

Economic Development

Nevada spends $7.5 Billion each year on imported fossil fuels. (natural gas, coal, oil)

• By 2030, we could have 100% renewable electricity, and 50% reduction in oil imports

• By 2040, we could have 100% renewable energy across all sectors

• Retaining $7 billion would create 100,000+ jobs


Residential

• Nevada homes spend ~$1.5 Billion out-of-state each year on fossil fuels

• 500,000+ homes in Nevada need efficiency upgrades x $7,500 = $3.75 billion impact

• 500,000+ homes could install renewable energy upgrades x $20,000 = $10 billion impact

• Auditors, HVAC, electrical, plumbing, insulation workers, solar installers needed


Commercial / Industrial

• Nevada businesses spend $2.0 Billion out-of-state each year on fossil fuels

• Deep efficiency improvements = 30%+ savings• Rooftop solar• GSHP under parking lots• Solar shade over parking lots


Transportation

• Nevada spends over $5 billion annually on imported oil and transportation fuels.

• How can we transform the Transportation sector?• Electric Vehicles?• Light Rail?• Magnetic Levitation (MagLev) Trains?• High-Speed Rail?


Energy/Water Nexus

• Efficiency and renewables reduce water waste• Covering half of Lake Mead in solar would:

• Reduce evaporation equal to Nevada’s water allocation from the Colorado River

• Produce more electricity than all of NV Energy’s fleet of gas and coal plants

• Indoor food production with aquaponics??


Next Steps

• NSHE Endowment: Divest from Fossil Fuels• New Energy Industry Task Force• Interim Legislative Committee on Energy• 2017 Legislature:

o Set Statewide Goal (100% renewables by 2040)

o Green Banko PERS: Divest/reinvest ~$2-$3 Billiono Carbon Tax??


Certified Energy ManagerLEED AP BD+C

[email protected]

Powered by Sunshine:Net-Zero Energy Homes

as a step toward100% Renewable Energy

David Gibson


April 6, 2016

d gibson presentation to unr renewable energy minor april 06, 2016

Economy & Finance