The Chamber revealed this in its latest survey which was presented to the media yesterday by its president, Chief Goodie Ibru.
He said in some parts of the country, the average daily supply of power now ranges between 15 to 20 hours per day.
He said that while households and small businesses tend to have significantly keyed into the increased power supply, diesel price is decreasing in line with falling consumption rate coming from increased power supply.
He said: "We observed that while the administrative blocks of most businesses are now connected to the PHCN, major manufacturers are yet to switch their production lines to the public power supply, because of sustainability concerns.
"We are looking to see how much the dry season will impact power supply as increased water levels in the dams due to the raining season played a key role in the current boost of power generation."
He advised that in order to build on the current tempo, government should sustain the gas-to-power framework.
He said the joint venture gas supply agreements with oil companies must be firmed up in order to ensure regular gas availability for the nation's existing and upcoming thermal power stations.
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