Renewable and Alternative Energy Options

🚨 New Publication Alert 🚨 What are realistic roles for hydrogen in the future energy transition? This paper provides important answers. Authored by Dr Nathan Johnson, Michael Liebreich, Daniel Kammen, Paul Ekins, Russell McKenna, and Iain Staffell and published in Nature Reviews Clean Technology this perspective piece critically examines hydrogen's role in our path to net-zero emissions. 🔍 Key Insights: - Hydrogen's versatility is clear, but its deployment should be strategic, focusing on sectors where other solutions are not available or favourable. - Challenges persist across the hydrogen value chain—from production and storage to transportation and end-use—necessitating coordinated infrastructure development. - While hydrogen holds promise for decarbonizing hard-to-abate sectors such as steelmaking, heavy transport, and long-duration energy storage, its role in areas like passenger vehicles and residential heating is not compelling given advancements in electric solutions. - Environmental considerations, including lifecycle emissions and resource use, must be central to hydrogen strategy development. - This paper underscores the importance of prioritizing hydrogen applications that are both economically viable and environmentally sustainable. 📖 Read the full paper here: https://lnkd.in/e3f53nmf

Renewables avoided $480 billion in fossil fuel costs last year. And those savings will continue year after year. This is one of the standout findings from IRENA's latest Renewable Power Generation Costs report. Unlike coal and gas power plants, wind turbines and solar panels don't need a continuous supply of fuel. Once they're built, they continue generating electricity without the ongoing cost of buying coal, gas or oil. And this has three important consequences: ✅ Every unit of renewable electricity generated reduces the need to purchase fossil fuels for power generation. ✅ Those avoided fuel costs accumulate year after year over the lifetime of the asset. ✅ They also reduce exposure to volatile fossil fuel prices and improve energy security. IRENA quantified these savings by comparing actual renewable generation in 2025 with an alternative scenario in which the same electricity was instead generated by each country's existing fossil fuel mix. The result was an estimated $480 billion in avoided fuel costs – and this is just a single year. The economics of renewable energy are often discussed in terms of the cost of building it, but one of its biggest economic advantages comes afterwards. Unlike a one-off saving, avoided fuel costs repeat every year a wind farm or solar farm remains in service.

What if the materials we rely on for fuels, plastics, and chemicals are already being produced every harvest season on farms across America? In California’s North San Joaquin Valley alone, billions of pounds of agricultural biomass such as nut shells, crop residues, and orchard trimmings are generated each year, much of it underutilized. The constraint has historically been infrastructure: the ability to convert this resource into useful products efficiently. That is beginning to change. Advances in conversion technologies, along with new efforts to map and mobilize biomass, are turning crop residues into a viable resource. Through Schmidt Sciences ‘ Virtual Institute for Feedstocks of the Future, initiatives like BioCircular Valley are working to connect research, data, and local partners to unlock these opportunities. As I mentioned in a recent post (https://lnkd.in/eURW6kbs), the convergence of biotechnology and new industrial systems will help define the next era of economic leadership. The emerging bioeconomy is one example of that shift already underway, as science and infrastructure align to produce essential materials at scale. In practice, this shift could reduce reliance on fossil inputs, lower emissions, and create new jobs across rural logistics, advanced manufacturing, and biotechnology, while providing farmers with additional revenue streams from materials that are currently underutilized. Learn more about biomass and its potential in this animated explainer video. This is the beginning of a shift where farms don’t just feed and fuel the world; they help build it.

April 6th: A bright spring day in Germany, one that perfectly illustrates the need for battery storage systems. Like so many other sunny days, PV generation in Germany covered a large portion of the electricity demand for several hours in the middle of the day, thanks to the cloudless sky and millions of solar modules. But there is a darker side to the sunshine. Large amounts of daytime solar can overload the grid and cause severe electricity price fluctuations: on April 6th, intraday electricity prices dropped to -200€/MWh at their lowest point. In cases where more electricity is generated from solar energy than the grid can handle, grid operators regularly require solar installations to curtail their production. This means that energy that could otherwise be made available to consumers cannot be used. And when the sun goes down, most of the demand must quickly be met with flexible sources. This adds an extra layer of complexity: deciding which conventional power plants can be shut down during the day and switched on again in the evening is a careful balancing act. This is precisely the situation where battery energy storage systems (BESS) can bridge the gap, with several advantages: - By storing part of the solar energy at peak generation times and dispatching it later, BESS can help shift the curve to more closely align with evening demand. - Better management of volatile generation from renewables also helps keep prices stable. - Provided they are close to the overproducing solar systems, BESS contribute to grid stability by helping balance supply and demand. Of course, there is no one-size-fits-all technology. A secure and flexible energy system needs a diverse mix. But batteries are playing an increasing role, especially as they become more and more affordable. We at RWE are harnessing the benefits: we have 1.2 GW of installed BESS capacity worldwide, of which nine systems totalling 364 MW of capacity operate in Germany alone. We’re scaling fast, with new large-scale projects recently commissioned in Germany and the Netherlands. And we have just decided to build a BESS facility in Hamm with an installed capacity of 600 megawatts. So, let’s continue to make the most of those sunny days — by creating the right framework conditions to build up affordable and flexible support.

Global electricity demand is set to grow by over 3.5% a year to 2030, outpacing overall energy use & economic growth. Emerging economies will drive electricity demand higher but advanced economies are also seeing it rise again for data centres, EVs & more. By 2030, renewables and nuclear power are together expected to generate half of the world’s electricity. Output from natural gas is also expected to grow while coal power is forecast to decline slightly as renewable capacity expands. More in the International Energy Agency (IEA)'s new report ➡️ https://iea.li/4knx6I7 A rapid expansion of grids & flexibility will be vital as electricity demand grows. Today, thousands of gigawatts worth of projects are currently stalled in connection queues worldwide. Deploying grid-enhancing technologies & regulatory reforms could unlock substantial capacity. Explore more insights on electricity markets, policies & trends around the world in IEA’s Electricity 2026 report, released today. The full report is freely available on our website ➡️ https://iea.li/3Op4n9C

Plants have been making fuel from sunlight for 500 million years. China just figured out how to copy them. A team at the Chinese Academy of Sciences built a system that takes CO₂ and water, hits it with sunlight, and produces the building blocks of synthetic gasoline. No oil wells. No drilling. No fossil carbon. Think about that. The secret was a "charge reservoir" — a material made from tungsten trioxide and tiny amounts of silver that traps solar energy like a battery and releases it precisely when needed. Previous systems failed because electrical charges disappeared instantly. This one stores them. The result: carbon monoxide — the industrial starting point for synthetic gasoline and jet fuel — at roughly 100 times the efficiency of previous catalysts. Water is the only ingredient consumed. Zero sacrificial chemicals. What stopped me: It works with existing engines. Existing pipelines. Existing infrastructure. No reinvention needed. The Multiplication Effect: 1 system proving the concept = validation that photosynthesis can be copied 10 systems producing fuel = regional energy without drilling 100 systems deployed = countries producing synthetic fuel from sunlight At scale = energy independence from fossil carbon For a century, we've drilled into the Earth for energy. This system pulls it directly from the sky. We've spent decades asking how to extract more efficiently. Maybe the better question was always: how do we copy what already works? ♻️ Follow me, Dr. Martha Boeckenfeld for innovations that reshape how we power the future. Share if you believe the next energy revolution will come from biology, not geology. 📚 Source: Chinese Academy of Sciences | Yu Huang et al. | Nature Communications, March 2026 | ECOticias — Adrian Villellas

Green Hydrogen and Biorefineries Integration: Achieving sustainable development requires shifting from a fossil-based to a circular economy, with renewable energy reducing the carbon footprint. This post features four case studies combining bio-based processes with green hydrogen via electrolysis from renewables. 🟦 Case Study 1: Methanation  Biogas upgrading to biomethane involves converting CO₂ to CH₄ through methanation using hydrogen. The plant comprises biogas production, water electrolysis, and an upgrade section consisting of "Mixing and Preparation," "Reaction," and "Separation." The biogas flows in at 590 SCM/h and hydrogen is supplied to maintain a 4:1 molar ratio with CO₂ in the reactor. Methanation can achieve nearly 100% CO₂ conversion, with valuable co-products like heat and oxygen from electrolysis. 🟦 Case Study 2: Hydroprocessed Esters and Fatty Acids The second process is hydrogenating triglycerides to produce GD, a drop-in fuel, using about 700 kt of oil from palm, sunflower, soybean, microbial, and cardoon sources. The design sequence includes a co-current multi-bed adiabatic reactor fed with a hydrogen-vegetable oil mixture, followed by a partial condenser separator. This process yields a gaseous phase (hydrogen, propane, carbon monoxide, and dioxide) and two liquid phases (water and hydrocarbons). A PSA unit recovers and recycles hydrogen, while the combustor processes tail gas for energy recovery. The distillation tower then separates heavy components and produces diesel from the organic liquid phase. 🟦 Case Study 3: Lignin hydrotreatment  The third case study focused on direct lignin hydrogenation to produce alkyl phenols and BTX, utilizing a lignin-rich stream from a second-generation ethanol biorefinery. Lignin valorization provides a viable alternative to combustion. Literature data and simulations evaluated the hydrogenation process for costs, expenses, yields, and hydrogen needs. A plant capacity of approximately 10 t/h of lignin from a Brazilian biorefinery in Alagoas was analyzed. A thermodynamic-based method was employed to model the HDO reaction, identifying relevant reactions and determining reactor yield via a temperature approach. 🟦 Case 4: Sustainable Aviation Fuels from bioethanol  A 4th case study focused on the production of sustainable aviation fuel (SAF) using the Alcohol-to-Jet (AtJ) process, aiming for 90,000 t/y of SAF. This process converts ethanol through dehydration, oligomerization, and hydrogenation, producing a mixture of alkanes with low hydrogen consumption. These steps have been successfully demonstrated at a commercial scale, minimizing scale-up risks. The produced ethylene can then be oligomerized into linear α-olefins. Additionally, a biorefinery is under construction in North Queensland, Australia. Source: see post image This post is for educational purposes only. 👇 What opportunity does integrating biorefineries with green hydrogen present? 

🔴 The Spanish power system collapsed within seconds following a double contingency in its interconnection lines with France. First, a 400 kV line disconnected, and less than a second later, a second line also failed, suddenly isolating Spain while it was exporting 5 GW of power. The frequency rose abruptly, triggering the automatic disconnection of approximately 10 GW of renewable generation, programmed to shut down when exceeding 50.2 Hz. This led to a sudden energy shortfall, a sharp frequency drop, and within just nine seconds, a total system blackout. 🪕 The causes of the incident are attributed to low rotational inertia (only about 10 GW of synchronous generation online), identically configured renewable protections that reacted simultaneously, reserves that were inadequate for such a high share of renewables, and an under-dimensioned interconnection with France. Could this have been avoided? Several measures could help prevent similar situations in the future, such as requiring synthetic inertia in large power plants, reinforcing the interconnection with France, and establishing a fast frequency response market, among others. 💡 In this context, Battery Energy Storage Systems (BESS) are more essential than ever. These systems can provide synthetic inertia, ultra-fast frequency response, and backup power in critical situations—capabilities that today’s renewable-dominated system cannot ensure on its own. By reacting in milliseconds, BESS help stabilize the grid during sudden frequency deviations, preventing massive disconnections and buying time for other reserves to activate. Their strategic deployment, combined with appropriate regulation, would make these systems a cornerstone of a more secure and resilient future power system. ... ✋️Please note that this post was written based on the information published on or before its release. Root cause analysis is still ongoing and updates will be released with the outcomes of the investigation. The goal is to show the features that can be provided by BESS within the wide portfolio of solutions applicable in these cases. All inisghts are highly welcome and appreciated in order to enrich our collective understanding. ... 📸 Reid Gardner Battery Energy Storage System (Nevada, USA) A real-world example of how BESS ensures grid stability by delivering synthetic inertia and fast frequency response—essential in a renewable-heavy energy mix.

Final 45V (Hydrogen Production Tax Credit) rules announced today, by the U.S. Department of the Treasury and IRS, after consideration of roughly 30,000 public comments over the past year. This provides additional clarity and flexibility that will help facilitate clean hydrogen investment. Examples of key changes include: Incrementality: Additional pathways provided for: nuclear plant retirement risk, State policies that meet certain criteria (currently California and Washington), and new carbon capture and sequestration (CCS). Time matching: Extends the transition from annual to hourly matching starting in 2030 instead of 2028. (Once hourly matching is required, the final rules allow hydrogen producers to determine electricity-related lifecycle emissions on an hourly basis as long as the annual emissions of the hydrogen production process are under 45V’s limit of 4 kg of CO2e per kg of hydrogen produced. This option will provide additional investment certainty because it helps producers avoid losing much of the credit value if they cannot procure Energy Attribute Certificates (EACs) for a limited number of hours during the year. The final regulations also provide rules for determining eligibility of hydrogen produced using methane reforming technologies, including with CCS, or with the use of natural gas alternatives such as renewable natural gas (RNG) or coal mine methane. The final rules will enable investment certainty by allowing the option of using the version of the 45VH2-GREET model that was the most recent when the facility began construction. Stay tuned: DOE will soon release an updated version of the 45VH2-GREET model to calculate the tax credit. See below for details: https://lnkd.in/evNn6RqT

Microsoft and Google just rewrote the map for data centre growth. The next chapter starts now. Let’s break it down 👇 → Microsoft: 55 MW, all-renewable, new cloud region in Sweden (that’s five in the Nordics!). Powered by wind and hydro, built for AI, connected with fiber and subsea cables. Fast, green, and built for low-latency workloads. → Google: 150 MW hyperscale campus in Chile, using solar and geothermal. The goal? 60% renewables by 2035. This site will drive local jobs, fuel AI, and unlock a new digital backbone for South America. But here’s the real headline: Hyperscaler CapEx will almost DOUBLE in two years. → $170B (2024) → $320B (2026) Let that sink in! Why the surge? Three forces: 1️⃣ AI is exploding-training and inference need more power, everywhere. 2️⃣ Data sovereignty-regulations demand regional builds. 3️⃣ Sustainability-green certification is now a must-have. What’s changed? The old way: Centralised mega-cities with “cheap land.” The new way: Go where clean power, fast networks, and local laws align. Here’s what I’m seeing on the ground: → Every site selection starts with power-how green? How reliable? → Latency matters-close to users, close to the edge. → Policy is king-compliance first, not an afterthought. For companies looking to scale: • Pick sites with renewable energy as a priority. Power = competitive edge. • Build for low latency and local rules. It pays off later. • Watch where the hyperscalers invest. The ecosystem follows. Microsoft in Sweden. Google in Chile. These are not one-offs. They’re signals for the whole industry. The new geography of hyperscale is about green power, distributed sites, and AI at the core. Where do you see the biggest shift-energy, policy, or connectivity? Share how you’re navigating the new map.