-
Nuclear KRW 79, Solar KRW 180: Where Renewables Gain the Edge Against AI Power Demand
Nuclear has the lowest levelized cost, but the time gap between 12th Basic Plan deliberation and renewables already in implementation decides who can meet AI power demand.
-
Lithium-Ion vs. Non-Lithium Distribution-Grid ESS: What Gains the Advantage on Jeju’s Renewable Grid
The government is considering a non-lithium battery quota in the Jeju distribution-grid ESS call. This post compares the conditions under which lithium-ion and non-lithium (vanadium-ion) ESS win or lose.
-
58 Days of Autumn Light Load — ESS Charging Window Moves to 10:00–16:00 and Curtailment Commands: Where Should the Interlocks Sit?
Autumn light-load measures run for 58 days from September 19. The PV-linked ESS charging window moves to 10:00–16:00 and curtailment runs with three advance notices. The interlock question is what happens when a command is not received.
-
Onshore vs. Offshore Wind — The Wind-Speed Cube or Accessible Days: Which One Decides the Site?
On wind alone offshore wins, but siting is decided by grid distance, days a failed turbine can be reached, and permitting. The cube law’s limit and the boundary conditions.
-
Rooftop vs. Ground-Mount Solar — The Decision Turns on Self-Consumption and Remaining Roof Life
Rooftop solar cuts the bill; ground-mount solar sells power. Weekend surplus of 2/7, remaining roof life, and rapid-shutdown conditions set the criteria between them.
-
Where Bifacial Modules Win — The Rear Gain Comes from the Ground and Mounting Height, Not the Module Spec
Bifacial rear gain is set by ground reflectance, height, row spacing, and rear shading. How the extra current affects DC ratings, and what vertical mounting changes.
-
Small Hydro vs. Solar — How a Small Generator Should Choose: Flow Duration Curves and Generating Hours
At the same kW, small hydro leads on timing and predictability, solar on speed and simplicity. Flow duration curves, minimum operating flow, and overspeed protection decide.
-
RPS Consolidates into a Competitive-Auction Fixed-Price Contract Market After 15 Years — When Does This Favor Generators?
RPS shifts to a competitive-auction fixed-price contract market. The reform lowers the financing-cost share of generation cost, not the generation cost itself — WACC, not module price, decides bidding strategy.
-
Green Hydrogen Electrolyzer Grid Interconnection — PCS/Rectifier Interlock Checklist
Unlike an ESS battery, an electrolyzer system is a rectifier load that draws power from the grid and converts it via a chemical reaction (water electrolysis). The interlock priority for an electrolyzer system must be designed differently from a standard ESS PCS — the hydrogen-concentration interlock must always rank above the electrical grid interlock.
-
Where Renewable Energy Wins, Where It Doesn’t
Renewable energy isn’t expanding merely because it’s “eco-friendly.” Solar and wind have begun to genuinely outperform other generation sources in cost-effectiveness for specific regions and applications.