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Modelling green Ammonia and Methanol in 2050. It will be expensive

September 9, 2022 by Schalk Cloete

Schalk Cloete starts by explaining that it is unrealistic to expect clean electrification to carry the main burden of energy supply. Even a fast roll out will be constrained by a range of infrastructure and cost limitations. Hence our continued dependence on fuels, with their high energy density and ease of transport. Those fuels will have to be made clean, so he summarises his co-authored papers that model the cost of green and blue ammonia and … [Read more...]

Filed Under: Alternative fuels, Energy Tagged With: ammonia, blue, carbon, CCS, CDR, costs, electrification, gas, green, GreenFuels, methanol, prices, VRE

Intelligent, flexible Sector Coupling in cities can double the potential for Wind and Solar

December 16, 2021 by Yong Chen and Dolf Gielen

This week the European Commission tabled the Energy Performance of Buildings Directive (EPBD) which should accelerate the decarbonisation of buildings. Buildings and cities play a key role in the energy transition. And the target high shares of variable renewable power supply will be much more easily achieved if the sectors using them display demand flexibility. In essence, that means using or storing the excess wind and solar generation … [Read more...]

Filed Under: Buildings, Energy, Renewables Tagged With: buildings, charging, China, Cities, coupling, demand, EC, epbd, EVs, flexibility, heating, HVAC, hydrogen, modelling, sector, smart, solar, storage, thermal, VRE, wind

New research shows Wind turbines, configured right, could provide grid stability

December 8, 2021 by NREL

Research at NREL, in collaboration with GE, has led to a demonstration of common wind turbines in “grid-forming mode”. They managed to set the grid voltage and frequency, operating without power from the wider electric grid. It opens the door to reducing reliance on conventional sources of stability like coal or gas generators. The well-known weakness of wind is its variability and therefore its need to be supported by traditional baseload … [Read more...]

Filed Under: Energy, Grids, Renewables Tagged With: baseload, coal, frequency, gas, grids, solar, stability, variability, voltage, VRE, wind

Will Wind & Solar confront its 10 challenges? If not, we need Nuclear, CCS, and more

November 2, 2021 by Schalk Cloete

Wind and solar’s impressive cost declines have seen its welcome and rapid emergence. But currently they account for a mere 2–4% of global energy. So these variable renewable energy sources (VREs) must now address 10 big challenges if they are to dominate the energy sector, explains Schalk Cloete in this data-led review. Their cost declines will be confronted and even cancelled by new costs they’ve not yet faced during their low-hanging-fruit … [Read more...]

Filed Under: Energy, Renewables Tagged With: biomass, CarbonPrice, CCS, CCUS, CDR, hydrogen, industry, jobs, minerals, Nuclear, poverty, solar, storage, Transmission, transport, VRE, wind

Modelling Hydrogen’s role in high penetration Wind + Solar grids

October 27, 2021 by Kelley Travers

A hydrogen ramp-up is going to be expensive and asset-heavy. So, a whole-system analysis is needed to ensure its deployment is done cost-effectively today and meets long term goals. This is what all nations committing to hydrogen are struggling with. Kelley Travers at MIT describes their modelling, in collaboration with Shell, that looks at the optimisation of hydrogen deployment in grids where variable renewables (VREs) like wind and solar are … [Read more...]

Filed Under: Energy, Hydrogen Tagged With: buildings, CarbonPrice, CCS, CCUS, gas, grids, hydrogen, industry, pipelines, solar, stability, storage, transportation, VRE, wind

Optimising Wind and Solar needs new ways of weather forecasting

January 27, 2021 by Hannah Bloomfield

Weather forecasters are used to – and very good at – predicting large-scale weather patterns and then inferring what the actual surface weather conditions will be, based on a database of past events. Hannah Bloomfield at the University of Reading explains how the creation of a database of site-specific wind and solar generation, as well as grid demand, can be used in the same way to more accurately predict the impact of the weather on these … [Read more...]

Filed Under: Energy, Renewables Tagged With: baseload, blackouts, forecasting, grids, prices, solar, VRE, weather, wind

Gas Switching Reforming: making Hydrogen to balance variable Wind, Solar

February 7, 2020 by Schalk Cloete

What is the best technology to balance the variable output of wind and solar? When there is little wind and sun the plant must produce power to compensate. When there’s too much wind and sun it must utilise that excess power. In other words, given the high capital cost of the new balancing technology it must do both profitably enough to cover the time sitting idle. A paper co-authored by Schalk Cloete looks at Gas Switching Reforming (GSR). The … [Read more...]

Filed Under: Energy, Hydrogen Tagged With: batteries, carbontax, CCUS, coal, GasSwitchingReforming, hydrogen, Nuclear, solar, VRE, wind

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      Recent Posts

      Wind (and Solar) need their own Financial Transmission Rights to hedge their unique congestion risks

      The U.S. should support the EU’s Carbon Border Adjustment Mechanism (CBAM)

      Utah: 140MW Geothermal bid can beat the cost and performance of the proposed Nuclear SMR

      Make Hydrogen in developing nations: share prosperity while meeting our climate goals

      Smart Glasses: experts can monitor and advise on power plant inspections anywhere in the world

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