Today: 12 November 2025
Subscribe
Browse Category

Renewable Energy News 27 June 2025 - 24 August 2025

PEM vs Alkaline vs Solid Oxide Electrolyzers: The 2025 Hydrogen Technology Showdown

PEM vs Alkaline vs Solid Oxide Electrolyzers: The 2025 Hydrogen Technology Showdown

Alkaline electrolyzers use a liquid potassium hydroxide (KOH) electrolyte, operate at about 60–80 °C, and have decades of industrial use in chlor-alkali and fertilizer plants. PEM electrolyzers use a solid polymer membrane and typically operate at 50–80 °C, delivering very high-purity hydrogen (>99.999%), with iridium catalysts at the anode and platinum at the cathode. SOEC operate at 700–850 °C with a ceramic oxide-ion electrolyte, reduce steam to hydrogen, and can exceed 80% LHV electrical efficiency when heat is supplied, with Sunfire achieving about 84% LHV in a multi‑megawatt unit and NASA reporting a 4 MW SOEC system in 2023. CapEx
14 August 2025
 ·  ·  ·  ·  · 
Solar Tech Showdown 2025: N-Type TOPCon vs HJT vs Perovskite Tandem – Which Will Power the Future?

Solar Tech Showdown 2025: N-Type TOPCon vs HJT vs Perovskite Tandem – Which Will Power the Future?

As of mid-2025, commercial N-type TOPCon cells reach about 23–24% efficiency, with best mass-produced TOPCon modules at 23.8% and JinkoSolar reporting 26.4% cell efficiency in tests. Heterojunction (HJT) solar cells regularly reach 25%+ efficiency in production, with Longi reporting a 27.3% lab cell efficiency. Perovskite–silicon tandem cells have surpassed 33% efficiency in labs (Longi 33.9%, KAUST 33.7%), and Oxford PV has a 72-cell tandem module at 24.5%. TOPCon modules typically retain about 87–90% of their power after 25–30 years, with a 3-year desert test showing just 0.14% degradation. HJT modules are generally stable, but a desert field study found HJT
5 August 2025
 ·  ·  ·  · 
Your Next Rooftop Will Be a Power Plant. Rooftop Energy Technologies: Present and Future Innovations.

Your Next Rooftop Will Be a Power Plant. Rooftop Energy Technologies: Present and Future Innovations.

Solar PV costs have fallen about 90% over the last decade. Modern home solar panels often exceed 20% efficiency, with typical residential systems of 5–10 kW. In the United States, over 4 million homes had solar panels by early 2024. Global rooftop PV adoption could reach about 100 million households by 2030. In the United States, the rooftop solar roofing market is projected to reach nearly $1 billion by 2025, as California mandates solar on almost all new homes starting in 2023. A Dutch startup unveiled the Blade X1 rooftop wind turbine at 1.4 meters tall, generating about 2,500–3,000 kWh
29 July 2025
 ·  ·  ·  · 
This New Solar Panel Tech Works Even at Night

This New Solar Panel Tech Works Even at Night

Thermoradiative energy generation, nicknamed night-time solar, produces electricity by emitting infrared radiation to the cold night sky when the device is warmer than its surroundings. Unlike conventional solar cells that absorb sunlight, thermoradiative devices emit photons to space, effectively running as a solar cell in reverse and using the Earth–space temperature difference at night. In 2020, Jeremy Munday and colleagues proposed an anti-solar cell that could theoretically produce up to about 50 W/m² at night under ideal conditions. In 2022, UNSW Sydney demonstrated the first unambiguous lab power from a thermoradiative diode using mercury cadmium telluride (HgCdTe), generating nanowatts and
29 July 2025
 ·  ·  ·  · 
Renewable Revolution 2025: Game-Changing Innovations in Solar, Wind, Geothermal, Bioenergy & Hydropower

Renewable Revolution 2025: Game-Changing Innovations in Solar, Wind, Geothermal, Bioenergy & Hydropower

Perovskite-silicon tandem solar cells achieved about 29% efficiency on commercial-size cells, exceeding traditional silicon panels. Bifacial solar panels boost energy yields by up to 30% in reflective environments such as snow or sand. Floating solar farms can raise output by roughly 15% due to water cooling of the panels. Covering 10% of the world’s reservoirs with floating solar could yield about 20 TW of capacity, roughly 20 times today’s global solar capacity. Offshore wind turbines now reach 15–18 MW per turbine, enabling major capacity gains in deep waters. Floating offshore wind pilots have been launched by Norway, France, and Japan,
10 July 2025
 ·  ·  ·  · 
1MW vs 100kW Solar Power Plants – Cost, ROI & Global Insights (India in Focus)

1MW vs 100kW Solar Power Plants – Cost, ROI & Global Insights (India in Focus)

100 kW solar plants typically use about 250 panels of ~400 W each, cover roughly 600–1,000 m², and generate about 150,000–175,000 kWh per year, enough to serve 15–30 homes. 1 MW solar farms deploy about 2,500 panels of ~400 W each, require ~16,000–20,000 m² (4–5 acres) of land, and produce around 1,600,000–1,800,000 kWh annually, enough for about 150–200 homes. In India, a 100 kW system costs about ₹50–80 lakh (₹0.5–0.8 crore) and a 1 MW system about ₹4–5 crore, roughly ₹60–₹80/W for 100 kW versus ₹40–₹50/W for 1 MW. India’s LCOE estimates place 100 kW at roughly ₹3–5/kWh and 1
6 July 2025
 ·  ·  ·  · 
Smart Grid and Energy Management Systems – Latest Developments (June–July 2025)

Smart Grid and Energy Management Systems – Latest Developments (June–July 2025)

Honeywell partnered with Verizon to integrate 5G connectivity into smart meters, achieving data speeds up to 10 Gbps for near real-time consumption data and improved demand forecasting. Eaton unveiled an AI-based wildfire prevention system called HiZ Protect that detects high-impedance power line faults with 95% accuracy in under 0.5 seconds. Hitachi Energy and AWS launched a cloud-based AI application, Hitachi Vegetation Manager, to predict and prevent tree-related outages. Schneider Electric rolled out its One Digital Grid platform, using AI-enabled analytics to unify grid planning, operations, and customer engagement with real-time monitoring and predictive analytics. Siemens demonstrated updates to its Xcelerator
4 July 2025
 ·  ·  ·  ·  ·  ·  ·  ·  · 
Global Renewable Energy Developments (May–June 2025)

Global Renewable Energy Developments (May–June 2025)

Global energy investment is projected to reach $3.3 trillion in 2025, with about $2.2 trillion directed to clean energy technologies. Solar is expected to attract $450 billion in 2025, making it the single biggest area of energy investment. China added 198 GW of solar and 46 GW of wind between January and May 2025, with 93 GW of solar installed in May alone, pushing cumulative solar capacity above 1,000 GW. In the United States, clean power sourced from renewables and nuclear provided a majority of electricity from March through May 2025, with solar output up 19% year over year in
30 June 2025
 ·  ·  ·  ·  · 
Beaming the Watts Down: NASA × Ascent Solar’s Thin-Film Array Sets the Stage for Space-to-Earth Power Transmission

Beaming the Watts Down: NASA × Ascent Solar’s Thin-Film Array Sets the Stage for Space-to-Earth Power Transmission

The space-based solar power (SBSP) concept was proposed in 1968 by Peter Glaser to place satellites in orbit and beam power to Earth. In 2023 Caltech’s Space Solar Power Demonstrator (SSPD-1) conducted three beaming tests in May, June, and July 2023 using the MAPLE flexible array to show ground reception of orbital power. In June 2025, Ascent Solar announced a 12-month Collaborative Agreement with NASA’s Marshall Space Flight Center (MSFC) and Glenn Research Center (GRC) to develop thin-film PV arrays for power beaming. Ascent’s copper-indium-gallium-selenide (CIGS) thin-film modules achieve about 15.7% production efficiency, with the Titan line targeting 17%+ efficiency
27 June 2025
 ·  ·  ·  ·  ·  · 
1 … 4 5 6
Go toTop