Your SlideShare is downloading. ×

Path to Zero Energy in Vermont

322

Published on

A Zero Energy Home (ZEH; often referred to as a net zero energy home) is a building that either uses no energy or one that generates as much energy as it uses. So, how does a home become a Zero Energy …

A Zero Energy Home (ZEH; often referred to as a net zero energy home) is a building that either uses no energy or one that generates as much energy as it uses. So, how does a home become a Zero Energy Home? All ZEH projects include these basic elements: vigorous energy conservation, renewable energy generation and a renewable energy-based heating system. However, the path to zero energy is unique to each home and family. Starting with why and how the owner wants to pursue zero energy, the path is also determined by house size and condition, renewable energy resource and the future needs of the family. Efficiency Vermont is investigating how to guide homeowners to retrofit their homes into ultra-low energy homes.

Published in: Environment, Technology, Business
0 Comments
0 Likes
Statistics
Notes
  • Be the first to comment

  • Be the first to like this

No Downloads
Views
Total Views
322
On Slideshare
0
From Embeds
0
Number of Embeds
4
Actions
Shares
0
Downloads
0
Comments
0
Likes
0
Embeds 0
No embeds

Report content
Flagged as inappropriate Flag as inappropriate
Flag as inappropriate

Select your reason for flagging this presentation as inappropriate.

Cancel
No notes for slide

Transcript

  • 1. 1 Do you want to keep paying for heat? -Eric Corey Freed
  • 2. 2 The Path to Zero Energy Homes A 2014 Pilot Program with Efficiency Vermont
  • 3. 3 What is a Zero Energy Home?
  • 4. 4 What is a Zero Energy Home?
  • 5. 5 What is a Zero Energy Home? Extreme energy efficiency • A lot of insulation • Very well air sealed • Efficient stuff in the house • Lighting • Appliances • Heating, hot water • Energy management system • High performance ventilation • Whole home energy monitoring + Renewable Energy System
  • 6. 6 What is a Zero Energy Home?
  • 7. 7 What is a Zero Energy Home? ANNUAL Energy consumption of the house ANNUAL Renewable energy generated =
  • 8. 8 What is a Zero Energy Home?
  • 9. 9 What is a Zero Energy Home?
  • 10. 10 the Path to a Zero Energy Home • A plan to create a home that generates as much energy as it uses over the course of a year. • It’s based on an analysis that determines the least cost way to balance conservation and generation • A mechanism for paying for the home improvements and renewable energy system
  • 11. 11 Sounds like a lot of trouble… Why Zero Energy?
  • 12. 12 Vermont Has a Plan Thermal Efficiency Task Force • Save $1.5 billion • Reduce fossil fuel 10% • Improve 25% of homes • Zero energy new buildings 90% by 2050
  • 13. 13
  • 14. 14
  • 15. 15 $0.00 $1.00 $2.00 $3.00 $4.00 $5.00 $6.00 Sep-92 May-93 Jan-94 Sep-94 May-95 Jan-96 Sep-96 May-97 Jan-98 Sep-98 May-99 Jan-00 Sep-00 May-01 Jan-02 Sep-02 May-03 Jan-04 Sep-04 May-05 Jan-06 Sep-06 May-07 Jan-08 Sep-08 May-09 Jan-10 Sep-10 May-11 Jan-12 Sep-12 May-13
  • 16. 16
  • 17. 17 Up with fresh air and health Down with pollutants Up with dry Down with moisture damage and mold.
  • 18. 18  Certificate of deposit  401k  IRA  Mutual fund Zero Energy Home  Annuity  Real estate  403b
  • 19. 19 Climate
  • 20. 20 What is a Zero Energy Home? + Renewable Energy System Extreme energy efficiency • A lot of insulation • Very well air sealed • Efficient stuff in the house • Lighting • Appliances • Heating, hot water • Energy management system • High performance ventilation • Whole home energy monitoring
  • 21. 21 0 2000 4000 6000 8000 10000 12000 14000 16000 Air seal 400 cfm50 Insulate ceiling R-60 Insulate walls R-40 Insulate foundation R-30 New windows R-5 Savings
  • 22. 22 0 2000 4000 6000 8000 10000 12000 14000 16000 Air seal 400 cfm50 Insulate ceiling R-60 Insulate walls R-40 Insulate foundation R-30 New windows R-5 Solar Savings
  • 23. 23 0 2000 4000 6000 8000 10000 12000 14000 16000 Air seal 400 cfm50 Insulate ceiling R-60 Insulate walls R-40 Insulate foundation R-30 New windows R-5 Solar Savings Efficiency
  • 24. 24 Total Home Energy
  • 25. 25 Total Home Energy
  • 26. 26 Deep Energy Retrofit … an aggressive, no holds-barred, informed, sophisticated, comprehensive project to… SAVE AS MUCH ENERGY AS POSSIBLE
  • 27. 27 Strategies for Low Energy Homes • Add insulation to exterior of walls • Insulate the foundation • Insulate the roof or attic • Air seal everything really well • High performance window replacements • Install a high efficiency ventilation system • Highly efficient replacements for appliances and lighting • Water efficient fixtures and appliances • Better heating system
  • 28. 28 Obstacles Vermiculite Lead Mold Asbestos Structural Problems Wet Basement Oddball Construction Occupants Cost
  • 29. 29 Efficiency Vermont Solutions Support for homeowners • What is being proposed • What are the relative benefits and risks • What can I expect • How do I pay for this Support for builders • Building science • Innovations • Collaboration • Design
  • 30. 30 Can You Afford It? Not doing something = Losing money
  • 31. 31 Payback
  • 32. 32 Home Energy Improvement Finances Return on Investment • This is an investment in your home • It pays dividends like an investment • It’s more reliable than the stock market • It’s been beating the stock market for decades Cash Flow • Best for understanding the impact it’s going to have on your finances • Most people finance, so small payments • Positive cash flow means money in your pocket
  • 33. 33 It’s Not ALL About Energy • Significant aesthetic upgrade • Durability improved greatly • Air quality assured • Regular maintenance included • Excellent comfort • Often more useable space
  • 34. 34 Typical Zero Energy Home Project • Add insulation to exterior of walls + new siding • Insulate the foundation + make basement less wet, more useable • Insulate the roof + turn attic into man cave • Air seal everything really well + eliminate drafts and cold floors • Replace windows + eliminate condensation • Install ventilation system + eliminate odors • Replace appliances, lighting and water fixtures
  • 35. 35 Typical Zero Energy Home Project Efficiency Improvements Save $3000/year Cost $20,000 Renewable Energy Investment Offset $800/year Cost $12,500 Non-energy Improvements Maintenance cost $20,000 Capital upgrade cost $10,000
  • 36. 36 Cash flow analysis
  • 37. 37 Is a Deep Energy Retrofit Right for You? • Aging in place • Get control over housing costs • Make space for caregiver/rental income • Love your home, hate the smell • Need an aesthetic upgrade • Ready for regular capital maintenance • Asthma • Growing family • Buying a home • Fire restoration • Noisy road
  • 38. 38 DER not for you… • Need to be willing to pay for it • Don’t like the location of your home • Looking for this work to pay for itself • Home is too big for you • Need a larger reason to do it • Climate commitment • Energy independence • Commitment to community
  • 39. 39
  • 40. 40
  • 41. 41
  • 42. 42
  • 43. 43
  • 44. 44
  • 45. 45
  • 46. 46
  • 47. 47
  • 48. 48
  • 49. 49 Mechanical Systems Heat • Ductless Mini-split Heat Pump • Mini-ducted Heat Pump • Altherma air-to- water Heat Pump • Ground Source Heat Pump Ventilation • Essential! • Can help move heat around • Probably needs its own ducts • Just a few products are truly efficient Hot Water • Conservation is top priority • Electric resistance • Heat pump water heater • Drain heat recovery • Solar thermal
  • 50. 50 Renewable Energy at Home • Buy outright – Prepay all energy bills for life of energy system • Finance – Pay as you go, but fixed cost for life of loan • Lease – Terms are generally arranged close to level cost
  • 51. 51 $0 $1,000 $2,000 $3,000 $4,000 $5,000 $6,000 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 Year Electricity Cost Over 25 Years Utility Cost with Inflation Solar Loan Payments Lease Payments
  • 52. 52 $0.00 $0.10 $0.20 $0.30 $0.40 $0.50 $0.60 0 5 10 15 20 25 30 Year Electric Rates Over 25 Years Utility Rate LCOE Cash LCOE Loan LCOE Lease
  • 53. 53 $0 $10,000 $20,000 $30,000 $40,000 $50,000 $60,000 Utility Cost with Inflation Solar Cash Sale Solar Loan Payments Lease Payments Total Cost Over 25 Years
  • 54. 54Nik Ponzio
  • 55. 55 Paul Scheckel
  • 56. 56Sandra Meidlenger
  • 57. 57 Community Solar Investor-developed • Monthly membership fee • Buying a service Owner-developed • Pay for your share up front • Need to pay for real estate Mini neighbor-developed • Arrangements vary • Can be an investment opportunity
  • 58. 58 How do you pay for it? Energy savings!
  • 59. 59 How do you pay for it? Finance it! • Spreads your payments out over time, just like your energy savings • Second mortgage or refinancing (equity) • Buying new… Include it in the mortgage • Interest is tax deductible
  • 60. 60 How do you pay for it? PACE! • Perfect if you own your home outright • 20% minimum equity • Not a loan: assessment stays with the property • Don’t have to recover the cost of the work in resale value • Easier than a mortgage • Not enough for the whole project • www.efficiencyvermont.com/PACE
  • 61. 61 Next steps – Your Home Meet with Dave or Li Ling • Set goals • Uncover high level obstacles • Assess financial resources Contractor(s) submits proposals Review proposals with Dave or Li Ling • Revisit goals • Get financing in order • Select strategy
  • 62. 62 Next Steps – Your Town • Is PACE right for your town? • Is there an interest in community solar? • Churches, commercial buildings as solar cooperatives • Passively survivable buildings as community asset • Reaching out to neighbors • Aggressive energy objectives in town plan • Infrastructure for electric transportation
  • 63. 63 Efficiency Vermont 888-921-5990 Li Ling Young x7735 Dave Keefe x7764

×