Household and general electrical service is delivered at 110 volts alternating at 60 Hz. Electrically powered items from the United States work with no modifications. The majority of the Dominican Republic has access to electricity. Tourist areas tend to have more reliable power, as do business, travel, healthcare, and vital infrastructure. Concentrated efforts were announced to increase efficiency of delivery to places where the collection rate reached 70%. The electricity sector is highly politicized. Some generating companies are undercapitalized and at times unable to purchase adequate fuel supplies.