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Comparing the efficiency and progress of the 5 leading Solar PV cell technologies

December 7, 2022 by Wayne Hicks and Harrison Dreves

NREL’s “Best Research-Cell Efficiency Chart” allows researchers to easily compare the performance of specific PV technologies, stretching back 50 years. It’s regularly updated and is free to use, explains Wayne Hicks and Harrison Dreves at NREL. A new “interactive” version is now available. The focus is on crystalline silicon cells, single-junction gallium arsenide cells, multijunction cells, thin films, and emerging PV. For example, you can … [Read more...]

Filed Under: Energy, Innovations, Renewables Tagged With: arsenide, crystalline, efficiency, gallium, multijunction, perovskite, PV, silicon, solar, ThinFilm

Solar PV windows on highly glazed skyscrapers can cut energy by 40%+

November 30, 2022 by Wayne Hicks

Around a third of the world’s energy consumption and CO2 emissions come from buildings. Highly glazed skyscrapers and buildings may look beautiful and let in plenty of light, but waste a lot of energy due to the extra cooling needed in summer and heating in winter. Modern skyscrapers can have window-to-wall ratios of 70%+. But modern thermally efficient photovoltaic windows not only provide insulation but turn the absorbed light into power. Wayne … [Read more...]

Filed Under: Buildings, Energy Tagged With: buildings, efficiency, emissions, generation, innovation, insulation, PV, rooftop, skyscrapers, windows

Latest U.S. modelling shows Battery Storage can support an 80% Renewables grid by 2050

May 18, 2022 by Madeline Geocaris

NREL’s latest Storage Futures Study concludes that battery storage should be able to support an 80% renewables grid mix in the U.S. by 2050. Madeline Geocaris at NREL explains how they modelled hundreds of future scenarios to accurately represent the value of diurnal (<12 hours) battery energy storage. The high-storage scenarios made different cost and performance assumptions for storage, wind, solar PV, and natural gas. 15 storage … [Read more...]

Filed Under: Energy, Storage Tagged With: batteries, buildings, costs, distributed, diurnal, gas, lithium, modelling, PV, rooftop, scenarios, solar, storage, US, wind

What’s best? Building Solar panels that last 30 years, or are short-lived easy-to-recycle and upgrade

April 27, 2022 by Harrison Dreves

The good news is that PV modules last so long – 30 years – that we don’t have to worry about recycling for a while. The bad news is that means we’re not thinking about the alternative pathway of deliberately building modules that last only a few years yet can be easily recycled and improved. Harrison Dreves at NREL describes the data-gathering and creation of a modelling tool that quantifies the flow of materials, energy, and carbon in the PV … [Read more...]

Filed Under: Energy, Renewables Tagged With: circular, investment, jobs, modelling, modules, PV, recycling, solar

“Floato-voltaics”: floating solar farms on existing municipal water reservoirs

March 30, 2022 by Connor O'Neil

The municipality of Cohoes, population 17,000, in New York State, is building a floating solar farm on its 10-acre water reservoir. It should power all the city-owned buildings and streetlights, save $500,000/year in electricity costs and still leave 40% of the generated electricity remaining for other civic use. It will cost $6m. It will be a first for a U.S. city, explains Connor O'Neil at NREL. The case for city “floato-voltaics” is so … [Read more...]

Filed Under: Energy, Innovations, Renewables Tagged With: Cohoes, costs, electricity, floating, floatovoltaics, grids, NewYork, PV, renewables, reservoirs, solar, US, water

Using electrostatic repulsion to clean Solar panels, avoiding up to 30% power loss

March 23, 2022 by David Chandler

Dust build-up on solar panels can reduce the power output by as much as 30% in just one month. Even a 1% reduction in power for a 150MW solar installation could result in a $200,000 (€180,000) loss in annual revenue. Cleaning normally requires purified water, but that needs to be trucked in to prime locations like deserts where solar potential is highest. Cleaning with brushes is labour intensive and can damage surfaces irreparably. David … [Read more...]

Filed Under: Energy, Innovations, Renewables Tagged With: China, cleaning, desert, dust, electrostatic, India, particles, PV, repulsion, solar, UAE, US, water

China should comfortably meet its 2030 Renewables target. But its emissions?

February 21, 2022 by Simon Göss

The long Covid lockdown seems to have had little effect on China’s electricity generation growth. In 2021, total generation increased by about 750 TWh (that’s around 1.3 times Germany's absolute total). Solar PV capacity grew by 53 GW last year (equal to the total installed solar capacity in Germany). Half of all offshore wind turbines installed worldwide in 2021 were off the coast of China: the strong additions were accelerated by the January … [Read more...]

Filed Under: Energy, Renewables Tagged With: additions, China, coal, electricity, emissions, fossil, generation, offshore, PV, solar, tariffs, thermal, wind

Solar “soiling”: energy loss from dust on panels can range from 7% to 50%

May 12, 2021 by Wayne Hicks

Dust and pollution particles on solar cells cut energy conversion, enough to cause big problems for investors let alone those depending on the generation. In parts of the U.S. energy loss can be as high as 7% and 50% in the Middle East. For assets supposed to deliver for 25 to 50 years this is hardly acceptable. Engineering solutions are struggling to keep up with the phenomenal take off of solar. Predicting the effects of “soiling” in your … [Read more...]

Filed Under: Energy, Renewables Tagged With: cells, cementation, cleaning, costs, investment, PV, soiling, solar

A circular economy for waste solar PV materials: what needs to be done to get it started

April 28, 2021 by NREL

Solar is already in the vanguard of the energy transition, and can similarly lead the world’s transition to a circular economy. Decommissioned PV modules could total 1 million tons of waste in the U.S. by 2030. Yet there are virtually no incentives or regulations to promote its recycling or reuse. In fact, says NREL, most current regulations in the U.S. define it as solid waste, making it difficult to introduce it to a recycling value chain. In … [Read more...]

Filed Under: Energy, Environment, Renewables Tagged With: circular, costs, incentives, PV, recycling, regulations, solar, waste

Plastic Solar Cells: OPV power conversion efficiency now reaches 18%

April 9, 2021 by NREL

Don’t just think plastics are insulators. Two Nobel prizes were won by showing they can be semiconductors. That celebrated research opened the door to polymer-based solar cells. They are made in a lab from common elements, using processes established decades ago for ordinary household items like plastic wrap. A design strategy breakthrough led by NREL has now created an organic photovoltaic (OPV) solar cell with a record-breaking 18.07% power … [Read more...]

Filed Under: Energy, Innovations, Renewables Tagged With: efficiency, fullerene, Nobel, OPV, organic, plastic, PV, recycling, solar

Distributed Solar: rooftop residential, commercial systems keep getting cheaper

December 6, 2019 by John Rogers

In the U.S., PV module efficiency (median values) rose from 12.7% in 2002 to 18.4% in 2018, much of it in the last decade and a full percentage-point increase in the last year alone. The best modules are even more efficient, says John Rogers at the Union of Concerned Scientists. Improvements have come from manufacturing processes and cell architectures, and the increasing share of more-efficient mono-crystalline technologies: up from 40% in 2016 … [Read more...]

Filed Under: Energy, Grids, Renewables Tagged With: batteries, electricity, grids, PV, residential, solar, storage

Solar energy is green. Solar panels are not. AI can revolutionise their design

January 31, 2019 by Cathy Chen

Solar panels are manufactured at 2,000ËšC, a temperature so high it requires fossil-fuel power. They are also made using rare earth elements, the supply of which has both capacity and political issues. A new and global project is using artificial intelligence (AI) to rapidly create new designs with new materials that can make their manufacture greener and cheaper. The new designs may even bring their manufacture back to your home country, says … [Read more...]

Filed Under: Energy, Innovations, Renewables, Resources Tagged With: AI, artificial intelligence, manufacture, materials, PV, rare earth elements, recycling, solar

Solar panels replaced tarmac on a road. Here are the results

September 27, 2018 by Dylan Ryan

solar roadways roads solar panels

Using roads for solar energy generation is one of those ideas that makes engineers frown but seems to capture the public imagination, with an Indiegogo fundraising campaign for the concept pulling in almost $2.3m in 2014. But now the idea is being put into practice it appears the engineers may have been right all along, according to Dylan Ryan of Edinburgh Napier University. Courtesy of The Conversation. … [Read more...]

Filed Under: Energy, Innovations, Renewables Tagged With: PV, solar, transport

Most read this week

  • Biofuel is approaching a feedstock crunch. How bad? And what must be done? by IEA | posted on January 23, 2023
  • EU ETS and CBAM: what the big update to emissions trading rules means for Europe’s key sectors by Simon Göss | posted on January 16, 2023
  • Can Aluminium-air batteries outperform Li-ion for EVs? by Helena Uhde | posted on September 8, 2021
  • Gravity Batteries: any nation can do it at scale using rocks by Simon Read | posted on July 27, 2022
  • 10 Carbon Capture methods compared: costs, scalability, permanence, cleanness by Ella Adlen | posted on November 11, 2019
  • Micro-nuclear reactors: up to 20MW, portable, safer by Christina Nunez | posted on April 22, 2021
  • EU Energy Outlook to 2060: how will power prices and revenues develop for wind, solar, gas, hydrogen + more by Alex Schmitt | posted on December 6, 2022
  • Europe needs a Regional Green Bank to fulfil its Green Deal and match the U.S. by Esmeralda Colombo | posted on January 20, 2023
  • Concrete: 8% of global emissions and rising. Which innovations can achieve net zero by 2050? by Ben Skinner | posted on January 24, 2023
  • How to sell Heat Pumps to the public in Europe by Helena Uhde | posted on January 19, 2023
  • Hydrogen production in 2050: how much water will 74EJ need? by Herib Blanco | posted on July 22, 2021
  • Twenty-first century energy wars: how oil and gas are fuelling global conflicts by Michael T. Klare | posted on July 15, 2014
  • What’s stopping even bigger Wind Turbines? Blade speed and flexing? More likely manufacturing and installation capacity by Simon Hogg | posted on January 18, 2023
  • What’s best for Hydrogen transport: ammonia, liquid hydrogen, LOHC or pipelines? by Herib Blanco | posted on May 5, 2022
  • Making Hydrogen will consume 2% of total global renewable capacity growth by 2027 by IEA | posted on January 17, 2023
  • EU energy ministers unable to agree on biofuels policy by Karel Beckman | posted on December 15, 2013
  • Why hydrogen fuel cell cars are not competitive — from a hydrogen fuel cell expert by Zachary Shahan | posted on June 17, 2016
  • Smart Glasses: experts can monitor and advise on power plant inspections anywhere in the world by Christoph Gatzen | posted on January 25, 2023
  • The 10 big problems with simply replacing fossil cars with electric by Schalk Cloete | posted on December 6, 2021
  • 2023 lookahead for Sustainable Finance: EU Taxonomy, ESG ratings, corporate disclosure laws, Europe’s “IRA” by Luca Bonaccorsi | posted on January 12, 2023

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Recent Posts

Make Hydrogen in developing nations: share prosperity while meeting our climate goals

Smart Glasses: experts can monitor and advise on power plant inspections anywhere in the world

Concrete: 8% of global emissions and rising. Which innovations can achieve net zero by 2050?

Biofuel is approaching a feedstock crunch. How bad? And what must be done?

Europe needs a Regional Green Bank to fulfil its Green Deal and match the U.S.

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