solar panels

Researchers at the American Institute of Physics have used the clear-sky irradiance model developed by the National Renewable Energy Laboratory to measure the degradation rates of solar panels at a testing field in Germany over five years. The scientists say the model, when combined with real-world data, offers an efficient tool to evaluate the aging of PV technology.

The Brazilian president said the potential introduction of a grid fee for net metered solar systems will be eliminated thanks to an urgent ad-hoc decree expected to be approved soon by parliament. The proposed ‘solar tax’ would have affected all new PV installations with a generation capacity of no larger than 5 MW under Brazil’s net metering regime.

Sustainable Energy Development Authority figures show the country saw around 94 MW of new rooftop generation capacity added in the first 11 months of last year. That compares to less than 14 MW in the previous three years.

Following its decision to switch from fixed feed-in tariffs to reverse auction bidding for the setting of solar incentives, the Vietnamese government has decided to devote the first two pilot auctions to floating PV. A first procurement exercise, for a project which could reach 100 MW of generation capacity, will be held this year.

U.S. scientists are trying to understand how non-fullerene small-molecule acceptors (NAFs) increase the efficiency of organic PV devices. They claim that methoxy groups embedded in the acceptors could facilitate an efficiency increase of approximately 6%.

2.5 MW of solar is being deployed at three project sites in Papua New Guinea, with commercial operations likely to begin within nine months. The installations will provide power in the island province of New Ireland at lower prices, while also improving access to electricity.

In a newly published policy document, Hanoi has urged regional governments and the country’s state-run utility, EVN, to suspend authorizations for new solar parks until further notice. Around 8.93 GW of utility-scale solar capacity is already approved for development in Vietnam, according to the Ministry of Industry and Trade.

An American research team developed the new formula by applying to bifacial cells the Shockley-Queisser triangle, which is used to calculate the maximum theoretical efficiency of a monofacial solar cell using a single p-n junction technology. According to the group’s findings, the triangle can help to clarify the deeper physical principles of the bifacial technology.

The Chinese manufacturer’s roadmap for its new module technology includes plans to raise panel output to 500 W. The Tiger modules are said to be fully compatible with the company’s existing module encapsulation processes and equipment.

Wind took the largest share of the awarded capacity, according to the preliminary results, but newly introduced limitations for such projects helped solar to take a significant portion of the allocated power for the first time in a Polish energy auction, with the highest bid coming in at $0.0608/kWh.