Author: Michael Barnard

ChatGPT generated infographic illustrating how power flow control technologies rebalance electricity flows across parallel transmission lines, allowing more power to move between regions without building new transmission corridors

Steering Electricity: How Grid Control Devices Unlock Transmission Capacity

I’m preparing to speak to engineers at GE Vernova during Engineering Week at the request of Cornelis Plet, CTO of GE Vernova Grid Systems Integration. It is a useful moment to step back and look at a class of technologies that rarely make headlines but quietly shape how modern power … [continued]

Chatgpt generated: Conceptual seawater air conditioning plant on the Honolulu waterfront supplying district cooling to nearby buildings.

District Cooling From the Pacific: A Targeted Efficiency for Oʻahu

The starting point for evaluating seawater air conditioning on Oʻahu is the fully electrified energy system for the island that has been developed through the earlier Sankey analysis. In that framework the island’s civilian energy system excludes overseas aviation fuel, maritime bunkering for ships crossing the Pacific, and military energy … [continued]

Chatgpt generated image of a hydrogen refueling station illustrating the infrastructure built ahead of demand.

Germany’s Hydrogen Refueling Network Looks Impressive Until You Do The Math

Someone recently pointed me at a chart published by H2 Mobility that shows hydrogen dispensed per month across its German refueling network climbing steadily over time. The chart is visually persuasive. The blue area rises from near zero in 2017 to roughly 59 tons per month in early 2026. It … [continued]

Chatgpt generated: Onshore wind turbines along an Oʻahu ridgeline illustrating existing wind generation on the island.

Wind on Oʻahu: A Modest but Valuable Complement to Solar

Any serious discussion of renewable energy on Oʻahu should begin with a clear understanding of how much electricity the island actually needs once fossil fuel end uses are electrified. Earlier analysis constructed a fully electrified civilian energy Sankey for Oʻahu that removed overseas aviation fuel, international maritime bunkering, and military … [continued]

Timeline of UK Hinkley nuclear reactor delays against 75% grid decarbonization with renewables by author

While Hinkley Nuclear Was Being Built, The UK Grid Decarbonized

The latest announcement about Hinkley Point C was predictable. The first reactor at the plant in Somerset is now expected to begin generating electricity in 2030. The cost estimate has climbed again, now reaching roughly £35B in 2015 pounds or about £49B in current money according to Electricité de France. … [continued]

Chatgpt generated: Solar canopies covering a large commercial parking area demonstrating one of Oʻahu’s largest untapped solar resources.

Parking Lots, Rooftops, & Farms: Mapping Oʻahu’s Solar Potential

Any discussion of solar power on Oʻahu has to begin with the amount of electricity the island actually needs in a fully electrified system. Earlier analysis stripped out aviation fuel for overseas flights, fuel bunkered for ships leaving the islands, and military fuel use. It also electrified transportation, buildings, and … [continued]

Chatgpt generated illustration of a vacuum annealing furnace, one of the common substitutes for hydrogen atmospheres in metal processing.

Why Small Hydrogen Markets Are Likely to Shrink

Someone recently asked me about small, distributed hydrogen use cases and whether those markets might eventually be served by imported green methanol cracked onsite to produce hydrogen. The idea is not irrational. Hydrogen is difficult to transport and store. Methanol is a liquid fuel with existing global shipping infrastructure. Catalytic … [continued]

Chatgpt generated: Electric vehicles and urban mobility representing the electrification of ground transportation on Oʻahu.

Electrifying Oʻahu: Shrinking the Island’s Energy System Before Decarbonizing It

Energy discussions about Hawaiʻi often begin with the largest numbers in the system. Aviation fuel, maritime bunkering, and military logistics move large quantities of petroleum through Oʻahu’s ports and fuel infrastructure. Those flows dominate many statistical summaries of the state’s energy system, and they create the impression that the transition … [continued]

Chatgpt generated: Oil-fired electricity generation infrastructure illustrating how petroleum still powers much of Oʻahu’s grid.

Oʻahu’s Real Energy System: Stripping Away Aviation, Shipping, & Military Demand

Energy discussions about Hawaiʻi often begin with the largest numbers on the chart. Aviation fuel, maritime bunkering, and military logistics dominate many of the data tables that describe the state’s energy system. When those numbers are placed on a single chart, the scale of the challenge appears enormous and the … [continued]