Average Monthly Costs

For a 1,500 sq ft home, expect $120-$200/month. For a 2,500 sq ft home, $200-$350/month. For a 4,000+ sq ft home, $350-$600/month. These ranges include electricity, natural gas, water, and sewer. Higher-end homes with pools, guest houses, or extensive landscaping will be at the top of these ranges.

Summer vs Winter Costs

Summer AC costs dominate San Antonio energy bills. From June through September, air conditioning can account for 50-60% of total electricity usage. Winter heating costs are lower due to the mild climate, with natural gas bills typically $50-$150/month during peak winter months.

CPS Energy

CPS Energy is a city-owned utility providing both electricity and natural gas to San Antonio residents. As a public power utility, CPS Energy's rates are generally competitive with the deregulated market. The utility offers energy efficiency programs, rebates for efficient appliances and HVAC systems, and free home energy audits for customers.

Texas Electricity Deregulation

San Antonio is in a deregulated electricity market, meaning residents can choose their electricity provider. However, CPS Energy provides the transmission and distribution infrastructure regardless of which provider you choose. Shopping for competitive rates on sites like PowerToChoose can save $10-$30 per month compared to default rates.

How to Reduce Costs

Install a programmable or smart thermostat to optimize AC usage. Improve attic insulation and seal air leaks. Replace old HVAC systems with high-efficiency units (CPS Energy offers rebates). Use ceiling fans to supplement AC. Plant shade trees on the west and south sides of the home. Upgrade windows to double-pane or low-E glass.