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A "comprehensive" solar dissemination program in South Carolina Mar 19

"Fair cost burden" is the key. South Carolina's peak shift and promotion of solar adoption.

A new solar power generation program aimed at curbing peak demand has arrived, with seasonal and hourly charges and critical peak prices applied to net metering, and subsidies for solar power generation for the simultaneous introduction of thermostats.

solar power generation program

Image Source: Duke Energy

Suppress peak demand

South Carolina's new system

A "comprehensive" solar dissemination program is about to begin in South Carolina, located in the southeastern part of the United States, where solar power hasn't been much talked about.

In September of this year, Duke Energy, a major US power company, announced a new name called "Solar Choice Net Metering" to power customers with the support of US solar power companies and environmental protection agencies. In addition to the revised net metering system, it announced a subsidy program for introducing solar power generation.

Duke Energy operates electricity in five states in the United States, but in South Carolina, where electricity is regulated, South Carolina's new system Liner (DEC) and Duke Energy Progress curb demand for Duke Energy Carolina. It powers approximately 730,000 customers through two DEP subsidiaries. "I think this is the most comprehensive net metering reform in the country," said Ron Huber, vice president of Duke's pricing and strategic solutions business.

By the way, net metering is similar to Japan's surplus purchase system, but it is based on the promotion of "self-consumption" rather than the investment purpose of selling electricity. The difference between solar choice net metering and conventional net metering is that when surplus electricity is generated, it is not a fixed price purchase, but a variable price that differs depending on the time of day and the time when the electric power company experiences peak demand. Is to be.

In normal times, the charges are based on the season and time zone, but under certain conditions such as supply and demand balance and soaring wholesale electricity prices, the critical peak price (CPP) is applied. The electricity purchase price at the critical peak is set at 25 cents / kWh, which is higher than the usual average of 10 cents per kWh. Specifically, peak hours are from 6 am to 9 am and 9 pm to 9 pm in winter, and from 6 am to 9 am in summer.

The super off-peak hours, when electricity prices are the cheapest, are from midnight to 6:00 am from March to November. The CPP is to be applied on designated days of high electricity demand in winter. In other words, it is a mechanism that promotes reduction of power consumption during peak winter months. CPP is applied up to 20 days a year.

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