Search results for: “power electronics”
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Transaction prices for power generation assets?
Transaction prices for power generation assets are tabulated in this data-file, capturing 65 deals for gas plants, wind, solar, hydro and nuclear, globally and over time. Median prices are c$1,000/kW, but range from $2,500 in the upper decile.
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Power generation: sensitivity to high-temperature heatwaves?
This data-file aims to provide a simple model for how generally well-covered grids can fail catastrophically during a heatwave. We have drawn on technical papers to quantify the deterioration of solar, gas, transmission and distribution losses, wind and other generation sources at higher temperatures.
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Wind power: energy costs, energy payback and EROEI?
This data-file estimates 3MWH of energy is consumed in manufacturing and installing 1kW of offshore wind turbines, the energy payback time is usually around 1-year, and total energy return on energy invested (EROEI) will be above 20x. These estimates are based on bottom-up modelling and top-down technical papers.
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Energy of rotation: angular momentum, inertia and flywheels?
This data-file calculates the energy stored in rotating masses. This includes 50Wh – 100 kWh flywheels. In power grids, the angular momentum of large rotating generators is known as ‘inertia’ and can run from 30kWh to 30MWH per turbine. Inertia has historically been a crucial part of stabilizing grids. Hence how do the physics work?…
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Global electricity prices vs. CO2 intensities?
Retail electricity prices average 11c/kWh globally, of which 50-60% is wholesale power generation, 25-35% is transmission and 10-20% covers other administrative costs of utilities. The average CO2 intensity of the global average power grid is 0.45 kg/kWh. Variations are wide. And there is a -35% correlation between electricity prices vs CO2 intensities in different countries…
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Power plant cooling: adapting for water scarcity?
Water is needed to condense steam, downstream of the steam turbines, in nuclear, coal and CCGT power plants. But thermal power demands and fresh water scarcity are both structurally rising. Hence this 16-page report explores how the energy industry might adapt, trends in power plant cooling, and who benefits.
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Bill of materials: electronic devices and data-centers?
Electronic devices are changing the world, from portable electronics to AI data centers. Hence what materials are used in electronic devices, as percentage of mass, and in kg/kW terms? This data-file tabualates the bill of materials, for different devices, across different studies.
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EV fast charging: opening the electric floodgates?
This 14-page note explains the crucial power-electronics in an electric vehicle fast-charging station, running at 150-350kW. Most important are power-MOSFETs, comprising c5-10% of charger costs. The market trebles by the late 2020s.
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Variable Power Tariffs Exacerbate Social Inequalities?
This data-file tabulates the impacts of variable electricity tariffs, after a large-scale US sample. Demand is inelastic, falling just 1% for a 20% price-increase. However, socially “vulnerable” consumers suffered disproportionately, with bills rising 4% more than non-vulnerable consumers.
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Fuel Cell Power Project Economics
This data-file models the economics of constructing a new fuel-cell power project: generating electricity from grey, blue or green hydrogen. The model is based on technical papers and past projects around the industry. Economics look challenging. Our base case estimate is a 24c/kWh incentive price.
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