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My Save The Earth Porjects

Humming Bird Wings beating about 53 times per second

Mid-Century house Energy upgrade, SunnyD in Palm Springs, CA

    Darren's new house in Palm Springs California was built in 1952. It was solidly constructed of masonry. Half of the house was insulated during the 80s and 90s expansion. However the original north facing outer wall has no added insulation. Best effiorts upgrading this house yields approximately a surplus of 100kWh per month.

  • 30 Canadian CS3K-310MS PV panels with Enphase IQ7 micro inverters, total 9.3kW system
  • Replaced gas furnace with Heat Pump HVAC: Carrier Infinity with Zone control and WIFI Communication, Variable stages: 25%-100% 75 speeds 24 SEER 13 HSPF
  • Replaced gas pool heater with Heat Pump Pool Heater: Pentair Electric Heat Pump with Easy Touch and WIFI Control
  • Replaced gas water heater with Heat Pump Water Heater: Rheem Professional Prestige ProTerra Heat Pump Water Heater with WIFI Control
  • Added Whole house water leak detector with auto shutoff, WIFI enable: FLO by Moen
  • Added 4 efficent Ceiling Fans
  • Replaced whole house water pipes from iron pipes to copper pipes.
  • Installed Foam roof: 4"-5" of 2.7 to 3.0 lbs norminal density; Resulting a R-value of 46 to 52.
  • Replaced single pane glass with double panes glass windows and doors
  • Replace whole house lighting to LED lights
  • Install smart oulets
  • Rewired the entire house's outlets with ground
  • Insulated all hot water pipings
  • Native plants
  • Install 240V NEMA 14-50 outlet in garage for EV charging
  • Add sub panel in garage with breakers to off load overloaded circuits
  • Add 240V outlet for dryer
  • Add 240V outlet for cooking range
  • Outdoor light sensors and timers
  • Energy monitor usage and production for the entire property
  • Ring security monitors

Candace's Home Energy upgrade

    Candace broght a home in 2015. We have made this an energy efficient home.

    • Replace 4 old inefficent Ceiling Fans
    • Add R30 Attic insulation with use of Radiant barrier
    • Energy efficient appliances
    • Weather strip all doors and windows
    • Replace wood burning fireplace with the most efficent gas burning fireplace
    • Took out all the ductings and HVAC system and replace it with eight zones radiant floor heating system
    • Replace Furnace with Knight boiler
    • Replace water heater with water tank that powered by Knight boiler
    • Add water heater blanket
    • Insulated all hot water pipings
    • Native plants
    • Replace whole house lighting to LED lights
    • Install 75Amp Open EVSE and add 3 240V outlet in garage for EV charging
    • Mini-split heatpump 21 SEER HVAC
    • Outdoor light sensors and timers
    • Install 10.540kW Solar PV system with Enphase micro inverters
    • Energy monitor usage and production for the entire property
    • Whole House Power Bakup: Two Powerwalls2 120/240V split Phase, 28kWh with 27kWh usable energy at 14 kW peak power
    • [Candace Powerwalls]


      PV System layout can be viewed here.
      PV System Wiring Diagram can be viewed here.

      System Specification:

Hong Kong Residential Roof Top Solar PV System

    In the Spring of 2015, I decided to put a PV system on my sister's roof in Hong Kong. I did not realize until after I started the project that PV is not popular in Hong Kong. Hence, I have to deal with convincing the local Utility CLP (China Light and Power), the local housing authority, as well as to design and build the system. It is a 3-phase system and I learn a lot from this project. Since this is the first solar PV project that deploys micro inverters, I also have to coordinate between Enphase and CLP to create a 50Hz grid profile.

    After 3 months of hard works, a 15.3kW PV system with Enphase micro inverters was born. The wiring diagram can be viewed here; and here is the array layout.

    System Specification:

Retrofit Darren's Home for Energy efficient

    Darren broght a home in 2013. We have put in a few items to make it an energy efficient home.

    • Replace doors and windows to double pane
    • Whole House Fan
    • Ceiling Fan
    • Retractable awnings to avoid summer heat get in the house
    • Add R30 Attic insulation with use of Radiant barrier
    • Energy efficient appliances
    • Weather strip all doors and windows
    • Replace dumb thermostats with programable thermostats
    • Six zones radiant floor heating
    • Add water heater blanket
    • Add timer for hot water circulation
    • Add irrigation smart controllers
    • Native plants
    • Replace whole house lighting to LED lights
    • Install Tesla HPWC and add 240V outlet in garage for EV charging
    • Battery backup
    • Outdoor light sensors and timers
    • Whole House Energy Monitor down to plug level
    • Mini-split heatpump 21 SEER HVAC
    • Restore Creek to elimate erosion and reduce sediment into waterway
    • Install 8.64kW Solar PV system with Enphase micro inverters
    • Whole House Power Backup: Three Powerwalls2 120/240V split Phase, 42kWh with 40.5kWh usable energy at 21 kW peak power
    • [Candace Powerwalls]


      PV System layout can be viewed here
      PV System wiring diagram can be viewed here

      System Specification:

Turning Alex's Home to a Net Energy Production House

Turning Jenny's Home to a Net Energy Production House


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