Tandem PV has achieved a record-breaking conversion efficiency of 30.4% with their perovskite glass tandem configuration module, surpassing the 30% efficiency barrier and showing promising durability with a 1% degradation rate per year. The company, with former U.S. Energy Secretary Jennifer Granholm on board, aims to quickly scale production modules that could achieve 28% efficiency. Their design allows for integration with various cell technologies, ensuring continued improvement in the future and providing more affordable and reliable clean energy solutions for America.
Category: Electricity & Industry
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Trina Solar announces 907 W tandem solar module with 29.2% efficiency
Trina Solar has successfully developed a high-efficiency tandem solar module with a record-breaking conversion efficiency of 29.2%, utilizing n-type TOPCon crystalline silicon and perovskite cells. This module, designed for mass production, aims to absorb a wider solar spectrum and has passed reliability testing. The company plans to ramp up production by 2026, showcasing their world-leading performance in efficiency and power output with their tandem solar cell technology.
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Battery Storage Boom Brings Free Electricity To Australia
The increase in battery energy storage systems in Australia, along with the growing adoption of BESS globally, is leading to lower electricity costs for residential and small business owners. Grid-scale and residential battery installations are surging, displacing more expensive gas and hydro power and reducing reliance on fossil fuels. The affordability of batteries and the shift towards longer-term storage are key components in the transition to clean energy. Programs like the Solar Sharer initiative demonstrate the potential for renewable energy to outcompete traditional sources, showcasing the importance of battery storage in maximizing efficiency and reliability of renewable energy systems.
https://cleantechnica.com/2026/06/01/battery-storage-boom-brings-free-electricity-to-australia/
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“Just as common as solar-hybrids:” Most developers now including batteries in plans for wind
Wind developers in Australia are increasingly incorporating battery storage into their projects to address the challenge of low prices in the energy market. Battery manufacturers are offering longer warranties to support wind and solar hybrids, with some warranties extending up to 30 years. Turbine manufacturers like Goldwind and Envision are already testing wind and battery storage systems to better understand their potential in modern grids. The trend towards wind and battery hybrids is expected to become as common as solar-based hybrids in the future. Battery sizing for wind farms is complex, with considerations for revenue cannibalization and the timing of power generation influencing storage needs. Hybrid configurations offer benefits such as utilizing existing sites and monetizing curtailed energy, with considerations for turbine level power limits being important in modeling DC-coupled hybrids.
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Chile EV Sales Report: 10% Market Share Reached in April Thanks to 247% Growth!
Chile has been a leader in adopting new technologies in Latin America, with the highest per-capita deployment of solar and a comprehensive network for electric vehicles (EVs). Despite lagging in passenger EV adoption, the country saw a significant increase in EV sales after a rise in gasoline prices due to Trump's war in Iran. EV sales in Chile have grown significantly, with the market shifting from BEV-heavy to near parity between BEVs and PHEVs. This rapid growth in EV sales has been unique to Chile compared to other countries in the region. The increase in electric vehicle adoption in Chile has been significant, with Changan leading in April thanks to its affordable Cs55 PHEV. BYD and Tesla also hold top positions in the market. Chile has comprehensive efficiency regulations for vehicles, with stricter requirements coming in 2027 and 2029 for different categories. The availability of hyper-affordable ICEV models in Chile has slowed the transition to electric vehicles. Despite this, the Chilean market remains competitive and diverse in terms of EV models available. Chile's vehicle market ecosystem is competitive with affordable ICEV models, positioning the country to adopt EVs on a larger scale in the future. Despite a decline in ICEV sales, Chile has been a leader in electric bus adoption. The country may switch from gas and diesel to electrons due to economic incentives and energy independence from solar farms. Chile is on track to potentially become the first country in the region where combustion vehicle sales are falling despite total sales growing.
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California — Lowest Wholesale Electricity Prices in USA
California has achieved the lowest wholesale electricity prices in the US, with no blackouts since 2020, thanks to the success of solar, wind, and water power. WindWaterSolar has met over 100% of the California ISO grid's electricity demand for an average of 4.9 hours a day in 2026, showcasing the potential of renewable energy. Despite high retail electricity prices for other reasons, the abundance of cheap wholesale electricity from sources like sunshine, wind, and water is a key factor in keeping prices low. This renewable energy success in California is a significant win for clean energy solutions.
https://cleantechnica.com/2026/05/30/california-lowest-wholesale-electricity-prices-in-usa/
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Proposal for high fixed network charges is wrong on home batteries, dynamic pricing, and impact on CER
The AEMC's Pricing Review on electricity pricing aims to assess the effectiveness, efficiency, and equity of current network electricity pricing and services in the context of increasing deployment of rooftop PV, home batteries, and electric vehicles. The focus is on putting electricity users first, addressing affordability challenges, improving energy self-sufficiency, and reducing environmental impacts. Household electrification and consumer energy resources are key to achieving these aims, as they can help flatten distribution network load peaks, increase network utilization, reduce costs, decrease emissions, and support the Federal Government's renewables target. The section also discusses the potential impact of moving network charges to fixed costs on the uptake of clean energy resources (CER) such as solar, batteries, and heat pumps, emphasizing the need for rigorous analysis to determine the net impact of CER on network costs, spot prices, and emissions reductions. Ultimately, the focus should be on policies and regulations that facilitate the uptake of CER to reduce electricity costs for all customers.
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92 EV Chargers Installed At Bay Area Affordable Housing Community
A new affordable housing community in North Fair Oaks, California has installed 92 EV chargers, including 76 Level 1 outlets and 16 Level 2 chargers, assigned based on residents' needs. The cost of the installation project was relatively small compared to the overall build project, and the chargers use clean, renewable electricity from Peninsula Clean Energy. This initiative showcases a practical and scalable solution for integrating EV infrastructure into affordable housing developments, contributing to the transition towards sustainable transportation and reducing greenhouse gas emissions.
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All solar cell efficiencies at a glance – updated
The Solar Cell Efficiency Tables, led by Professor Martin Green from UNSW, have been updated to Version 68 and will be available as open access in Joule starting from July 2026. The latest results show new efficiency records for large area silicon cells, modules, and lead halide perovskite cells. Progress has also been made with perovskite-silicon tandem cells and modules, indicating a positive trend towards more efficient and sustainable photovoltaic systems. Additionally, Version 67 presented a new record of 27.9% efficiency for an interdigitated-back-contact (IBC) device developed by Longi, showcasing significant advancements in solar cell technology since the tables were first published in 1993. Scientists from various institutions around the world, including the European Commission Joint Research Centre, Germany's Fraunhofer Institute for Solar Energy Systems, and the US National Renewable Energy Laboratory, have contributed to these advancements.
https://www.pv-magazine.com/2026/05/29/all-solar-cell-efficiencies-at-a-glance-updated-6/
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Large-load customers can help commercialize new clean energy technology: CEBA
Large-load customers are turning to clean firm technologies like advanced geothermal and small modular nuclear reactors to power their operations, with the help of clean energy tariffs and bilateral customer-utility arrangements. Hyperscalers like Google and Microsoft are investing in clean energy power purchase agreements, focusing on nuclear, hydropower, and geothermal, to drive the development of new technologies and protect ratepayers. Small modular reactors are attracting investments for future data center operations due to their smaller footprint, and durable clean energy tariff designs are crucial for supporting these initiatives. Partnerships between customers and utilities are leading to innovative solutions, such as in Minnesota where Google and Xcel Energy utilized a green energy tariff to bring online a portfolio of resources including solar, wind, and long duration energy storage, resulting in the largest long duration energy storage system seen so far.