Hopper Design, LLC

Toward Healthy and Sustainable Homes


Our documents

Passive solar

Active solar

  • Solectria Renewables (James Worden)
    • This company designs and manufactures high efficiency systems for renewable energy such as grid-tie inverters for solar photovoltaic systems. Solectria has been in business since 1989.
  • DOE: Solar Hot Water and Space Heating & Cooling (pdf)
    • The DOE Solar Energy Technologies Program on thermal solar energy collection.
  • PVWATTS (Version 1)
    • This is a government maintained site. Researchers at the National Renewable Energy Laboratory (NREL) developed PVWATTS to permit non-experts to quickly obtain performance estimates for grid-connected PV systems.
  • PV cells (pdf)
    • Hopper Design, LLC description of how a photovoltaic cell works.

Government Energy Assistance links

  • Tax Credits (IRS)
    • This Government site will help you regarding Tax Credits from the Energy Policy Act of 2005. The IRS provides information on tax credits for individuals who install various types of solar equipment, high efficiency equipment and make energy efficient home improvements.
  • Energy Star
    • This government site helps you to do your own Home Energy Analysis and learn about Energy Star labeled products.
  • Energy Savers
    • This government site provides energy tips and calculators for homeowners, contractors and realtors.
  • US DOE Energy Efficiency and Renewable Energy
  • Rebate Offers (Energy Star)
    • Find rebate offers for products in your area through utility company rebate programs and appliance manufacturers.
  • Database of State Incentives for Renewable Energy (DSIRE)
    • State and federal incentives for energy efficiency.

Sustainable Development

  • Leadership in Energy and Environmental Design (LEED)
    • By the US Green Building Council, a non-profit organization. The LEED program promotes the construction of buildings that are environmentally responsible, profitable and healthy places to live and work.
  • LEED Homes
    • LEED pilot program currently in development to apply LEED principles to the building of green homes.
  • EarthRise (Donald Watson, FAIA)
    • Donald Watson has been involved in solar design for architecture, with emphasis on daylighting, since the 70s and has designed award winning energy efficient homes. He has also authored several books on the application of solar technology to architecture.
  • Northeast Sustainable Energy Association (NESEA)
    • The NESEA site provides information about green buildings in the northeast.
  • World Business Council for Sustainable Development
    • This site provides information on sustainable development throughout the world.

Home Energy Efficient Mortgages

Early New England Colonial Saltboxes

Environmental Impact

  • Carbon Footprint Calculators
    • Your carbon footprint is a measure of your impact on the environment, usually given in tons of carbon dioxide per year. Calculate your carbon footprint online.