California Title 24, a leading consultancy in the field of residential energy compliance, today addressed changes in regulations related to wall insulation, water heaters, heating and air systems, windows and solar power arising in the California Energy Commission's (CEC's) 2019 code cycle. The new energy code is 52% more stringent than its predecessor. Owners of low-rise residences may need to change in order to stay compliant with the law. In particular, the code mandates that all new low-rise residential buildings include photovoltaic panels.