Here are some possible energy producing or conserving features I could see in a house:
• Solar panels - These produce clean solar energy that can power the house or be stored in batteries.
• Wind turbines - Wind turbines can capture wind energy to produce electricity.
• Skylights and windows - When positioned properly, skylights and windows allow sunlight to flow in and provide natural light, reducing the need for electric lights during the day.
• Insulation - Proper insulation in walls, attic, floors, and around doors and windows can help retain interior heat and reduce heating and cooling costs.
• Energy-efficient appliances - Appliances with ENERGY STAR labels or high energy efficiency ratings use less electricity.
• Low-flow water fixtures - Faucets, toilets, and shower heads that reduce water flow can lower water heating costs.
As for participating in a competition like the Solar Decathlon, I think the opportunity to be part of a team working to design and build an innovative, sustainable house would be really interesting and educational. The hands-on experience of integrating different energy producing and conserving technologies into an actual house design could provide valuable lessons and inspiration for future projects. However, a competition of that scale would likely require an immense amount of time, effort and coordination, so I would have to consider my availability and other commitments before committing to participate. Overall though, the chance to advance sustainability and green energy through an innovative house design seems like a worthy challenge.