Smart thermostats and other devices can help keep costs down

Third annual conference, sponsored by SoCalGas, PG&E and Energy Vision, forecasts growth of biogas development in state

Expo will also feature cooking demos and tastings prepared by chefs and culinary students and networking opportunities for foodservice professionals

Natural gas utility pledges to limit yearly energy use at each of its 60 work locations, reducing its overall electricity usage by more than 86,000 kWh - the equivalent of more than 157,000 miles driven