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Houston, Texas's largest city and a global energy hub located in Harris County on the Gulf Coast plain, is home to millions of residents drawn by its diverse economy spanning energy, healthcare, and aerospace industries. For electricity service in Houston, CenterPoint Energy operates as the transmission and distribution utility, meaning you call CenterPoint to report outages, downed lines, or meter issues. For your electricity plan, billing, and customer support, you'll work with a retail electric provider like Ambit Energy. This split between the regulated utility that owns the poles and wires and the retail provider that offers you competitive rates is standard for Texas's deregulated electricity market. Houston's hot, humid subtropical climate creates substantial cooling demand, especially from May through September, with most households consuming between 1,200 and 2,500 kilowatt-hours per month during peak summer months. When comparing retail electricity plans, focus on rates quoted at the 1,000 to 2,000 kWh monthly tier rather than promotional rates based on 500 kWh, since that consumption range reflects where typical Houston homes actually fall over a full 12-month contract cycle. Winter heating demand is minimal, but your annual usage remains high due to air conditioning needs. Taking time to evaluate plans across realistic usage levels will help you identify genuine savings rather than introductory pricing that doesn't match your actual bill.