Fit windows with heat-shrink film or weatherstripping.
Improve insulation.
Solar Panels
Sunpower, 1-833-999-2938, SunPowerSolarSystem.com.
SoCal Tesla Solar Roof experience.
Plumbing
EBMUD Water Wednesday.
Sensing water leaks
EBMUD flowmeter rebate covers up to 50% ($200 max) of the cost of a flow meter and two years of prepaid service fees.
Flume Smart Home Water Monitor. $250 on Amazon. Flume’s EBMUD promotion. Flume water flow meter comes in two sections: a bridge that plugs into an electrical outlet and connects to a 2.4GHz WiFi and the meter which is strapped to the EBMUD meter casing; the bridge and flow meter may be up to 1,000 feet apart. Moen Flo Smart is over $400 on Amazon; AlertLabs appears to be geared towards commercial buildings.