Renewable and Sustainable Energy Reviews stands as one of the most influential academic journals in the clean energy field, publishing comprehensive review articles that synthesize cutting-edge research on everything from solar photovoltaics to grid integration challenges. Published by Elsevier with an impact factor consistently ranking among the highest in energy research, the journal serves as a critical resource for researchers tracking progress across renewable technologies, policy makers seeking evidence-based guidance, and industry professionals who need authoritative summaries of rapidly evolving technical domains.
Unlike primary research journals that focus on individual studies, this publication specializes in review …
Renewable vs. Nonrenewable Energy in Spain: Which Path Is Right for the Future?
Spain’s energy future is renewable, and our analysis of the country’s current infrastructure confirms that wind and solar power have already proven superior to fossil fuels for meeting the nation’s climate and economic goals. With 75% of Spain’s electricity already generated from low-carbon sources in 2025 and solar alone delivering 22% of the nation’s clean electricity, the momentum toward 100% renewable generation by 2050 isn’t just policy ambition, it’s practical reality unfolding in real time.
We’ve spent the past year examining Spain’s energy transition through site visits to operational solar farms in Andalusia, interviews with grid operators managing the integration of …
Selling Solar Property As-Is: What Energy Asset Owners Need to Know Before Listing
Selling a solar-equipped property as-is presents unique opportunities and challenges that traditional real estate transactions don’t address. Solar installations have transformed from niche upgrades to mainstream home features in 2026, yet transferring ownership of an energy-generating asset requires navigating lease agreements, power purchase arrangements, and interconnection contracts that most sellers overlook until closing day approaches.
The financial picture gets complicated quickly. A fully owned solar array typically adds value to your property, but leased systems can create friction with buyers who must qualify for lease assumption or negotiate buyout terms with the solar company. You’ll need complete …
Why Coal Will Never Be Renewable (And What Spain’s Energy Market Proves)
No, coal is not renewable. That single-word answer settles a question that has become surprisingly common as misinformation circulates online and some industry stakeholders blur the lines between energy sources.
The confusion is understandable. Coal comes from organic matter, plants that once captured solar energy through photosynthesis millions of years ago. But renewability isn’t about distant biological origins. It’s about whether we can replenish a resource within a human timeframe, and coal fails this test spectacularly.
Renewable energy sources regenerate naturally on scales measured in hours, days, or seasons. Solar panels convert sunlight that reaches Earth every morning. …
The Future of Solar Energy Is Already Reshaping How We Power the Grid
Solar energy stands at an inflection point. What began as a niche technology for satellites and remote cabins now generates over 6% of global electricity, with projections showing it will become the world’s largest power source before 2035. But the transformation happening right now goes far beyond adding more panels to rooftops.
Perovskite-silicon tandem cells are breaking efficiency records quarterly, reaching 33.9% in commercial production facilities this year. These aren’t lab curiosities anymore. Oxford PV’s Brandenburg facility is shipping them at scale, signaling a shift from incremental improvements to fundamental breakthroughs. Meanwhile, bifacial modules capturing reflected light from both sides have …
How Online Certification Is Opening Up Renewable Energy Careers in 2026
The renewable energy sector added over 2.3 million jobs globally in 2025, and that growth shows no sign of slowing. For professionals eyeing this expansion, online certification programs offer a fast track into solar installation, wind energy management, energy auditing, and grid modernization roles without the time and cost barriers of traditional degree programs. But with hundreds of courses flooding the market, distinguishing rigorous, employer-recognized credentials from glorified certificates of participation has become increasingly difficult.
Maria Chen discovered this challenge firsthand. After 12 years in fossil fuel operations, she enrolled in three different online renewable energy programs in early 2025, only to find …
Cuba’s Solar Power Revolution Sparks a Caribbean Clean Energy Awakening
Cuba is installing solar panels at a pace that would have seemed impossible just five years ago. The island nation, long constrained by fuel shortages and an aging electrical grid, has added over 300 megawatts of solar capacity since 2022 alone. This represents a fundamental shift in how the country generates power, moving away from imported fossil fuels toward homegrown renewable energy.
The transformation didn’t happen by accident. Persistent blackouts, worsening economic pressures, and limited access to foreign oil have forced Cuba’s hand. What began as necessity, however, has evolved into opportunity. Government officials now speak of reaching 24% renewable energy by 2030, with solar leading the charge. Dozens of …
What Is Going On With China’s Crazy Clean Energy Installation Figures?
After China announced their official 2020 report on their figures in solar and wind system installations, plenty of analysts cannot believe what they have witnessed. According to China’s National Energy Administration, or NEA, the additional capacity for renewable energy systems is in a whopping total of 120 Gigawatts, which is an unrealistic number.
Given the circumstance in 2020 where China has been the epicenter of the COVID-19 outbreak, achieving numbers beyond what all expected is simply impossible to happen. The official predictions by International Energy Agency and other entities won’t even exceed 50 Gigawatts on either renewable energy source.
Experts are surprised with the numbers on solar energy but it is …
The Pandemic Rages On: Some Solar Companies Are Still Selling Door-To-Door
If you think that selling cleaning items and encyclopedias are some of the most common items to be sold using the door-to-door method, then maybe a solar vendor has yet to knock on your door. Vivint Solar has been practicing door-to-door selling in order to attract potential buyers to their rooftop solar panels.
There is a challenge in the technical explanations but it turns out to be very effective. As the company is gaining momentum, the COVID-19 pandemic happened and the global economy is the biggest casualty. New rules and regulations impose restrictions on any social interaction, and that includes door-to-door selling.
Vivint Solar and another large vendor, Sunrun, have joined forces and confirmed that they are …
Bloom Energy Sees Future in Hydrogen Fuel Cells Electrolysis and Carbon Capture
Due to the 4th quarter sales surge, Bloom Energy’s profitability target is projected as a year earlier. The annual deliveries of fuel cell increase to 132.6 Megawatts. Together with the effort of reducing cost, K.R. Sridhar, CEO of Bloom Energy, sees that 2021 will be the best year yet for the company.
Although the progress is consistent, Sridhar is expecting to fully adapt the company’s solid-oxide fuel cell technology. This technology aims to generate electricity from hydrogen. The plan was to obtain ‘green’ hydrogen through electrolysis and capture carbon in ‘blue hydrogen’ coming from natural gas. With this, the estimates will appear off the charts as the impacts are on a very large scale.
Bloom Energy …