The UK transition is often cited as a success story. Coal’s contribution has dropped from 40% to 6%. Wind, solar and hydroelectric now generates more electricity than nuclear. Demand for electricity has also fallen. The carbon intensity of Britain’s electricity has almost halved, from over 500g of CO₂ per kilowatt-hour in 2006 to under 270g in 2018. The National Grid now expects to be able to operate a zero-carbon electricity system by 2025. But … [Read more...]
Barriers to intermittent renewables and battery storage come tumbling down
The astonishing growth of the renewable energy sector shows little sign of slowing, as costs continue to plummet, along with the cost of energy storage, to remove many of the barriers to using intermittent renewable generating sources in a range of applications. Much of this is down to the fact that the cost of battery energy storage is one third lower than this time last year. … [Read more...]
The rapid growth of solar integration into grids: learn from Germany
With the rapid electrification of Europe’s energy system, the network operators are facing a challenge. The integration of more and varied electricity generation is putting a strain on the growth of grids. Erik Rakhou and Chris Collins contrast the struggles the Netherlands is experiencing with the smoother ride navigated by Germany where in the 12 years to 2015 solar PV capacity rose around 100-fold from 0.44 GW to 39.7 GW. Greater investment, … [Read more...]
China plans UHV transmission lines that span continents
China’s Global Energy Interconnection (GEI) project aims to create a worldwide network of UHV transmission lines that can deliver electricity between continents. If successful, generating electricity in the most remote areas – think deserts and the Arctic – becomes viable, as does China’s ability to sell electricity directly to Europe. First, two main technological challenges have to be overcome: energy loss along transmission lines spanning … [Read more...]
Solar consumption and manufacturing: can Europe re-take the lead?
As a solar consumer Europe already plans to re-establish itself as a leader. European solar’s share of total consumption, 5% in 2018, is set to be 36% by 2050. There are three main drivers for progress: increasingly ambitious national targets, the rise of low-cost solar helped by the increase in CO2 costs, and digitalisation. But what about manufacturing? Practically all Europe’s solar cells are bought in cheaply from China and the Far East. … [Read more...]
Onsite solar and storage powers off-grid telecom towers
There are more than 3m telecom towers globally, and powering them is a $100bn market. It's a particularly important growth sector in developing countries. They are already using mobiles to leapfrog the laying of costly landlines, but because they lack grids that stretch to remote communities they need to power towers that are off the grid. Dr Thomas Hillig says as solar and storage costs continue to drop they are replacing diesel gensets as the … [Read more...]
Investing in gas: the effect of carbon taxes, gas prices, and the growth of renewables
Schalk Cloete presents his latest article looking at what affects the profitability of an investment in a specific power sector. After reviewing onshore wind, nuclear and solar, he now looks at gas. His analysis of coal is to come. The major variables are increasing CO2 prices, and natural gas pricing. He adds that the growth of wind and solar should benefit load-following gas power plants: they are plugging the intermittency gap when electricity … [Read more...]
Energy as a service: light, heat, mobility, information
Large scale electricity generators, unconcerned with end-use, want to sell you more electricity, argues Walt Patterson of the Hoffmann Centre for Sustainable Resource Economy, based at Chatham House. But the arrival of small-scale, localised and micro-grid suppliers could see the electricity generation business turned on its head. It opens the door to the selling of the service – light, heat, refrigeration, motive power, information – rather than … [Read more...]
Will Toyota’s new battery design solve the looming shortage of vital metals for renewables?
We all know the important part played by lithium in battery manufacture. But there is a longer list of metals - including copper, cobalt and neodymium – that must ramp up supply for the continued rapid growth of EVs, solar, wind and other renewables technologies. EVs alone will increase the consumption of copper nine-fold by 2027. Cobalt prices already doubled in 2017. Neodymium use will rise by 700% in the next few decades to satisfy our need … [Read more...]
IEA: Battery storage races to keep up with solar and wind’s demand-matching challenges
Yesterday’s article from the IEA posed the question: will solar’s inherent intermittency slow its rise as a major power supply. For variable renewables like solar and wind to grow to over 50% of global capacity additions by 2040, storage technology must keep up with this pace. For this to happen, “flexibility” – the ability of the power system to quickly adapt to changes in power supply and demand – needs to grow by some 80% in the next decade … [Read more...]
IEA: solar’s exponential growth could make it less competitive, not more
Solar’s current growth trajectory means a doubling of annual deployment every three years. But despite further expected reductions in some cost areas (e.g. cheaper tech and economies of scale), the IEA’s new VALCOE (value-adjusted levelised costs of electricity) metric calculates that solar’s relative competitiveness per unit added will actually decline as its inherent demand-matching issues scale up with the growth. Brent Wanner, WEO Energy … [Read more...]
EXCLUSIVE: Chinese government’s plan to meet the Paris goals
China is leading the energy transition as the world’s largest producer, exporter and installer of solar panels, wind turbines, batteries and electric vehicles. It has a clear lead too in renewable energy patents, ahead of the U.S. and twice that of the EU. But it is also still heavily dependent on coal, the air pollution in its cities is legendary, and the economy is expected to quadruple by 2050. Against this background, Kaare Sandholt, Chief … [Read more...]
Battery manufacture must take a global leap forward to ensure a sustainable and just transition
The global battery market is surging. By 2040 the global energy storage market is projected to attract $620 billion of investment. Over the past decade, the rechargeable lithium-ion battery market doubled on average every three years. To cope with this growth, we need the development of a sustainable and low-carbon value chain for batteries in order to contribute to the implementation of the 2015 Paris Climate Agreement, says Martin Brudermüller, … [Read more...]
Solar energy is green. Solar panels are not. AI can revolutionise their design
Solar panels are manufactured at 2,000˚C, a temperature so high it requires fossil-fuel power. They are also made using rare earth elements, the supply of which has both capacity and political issues. A new and global project is using artificial intelligence (AI) to rapidly create new designs with new materials that can make their manufacture greener and cheaper. The new designs may even bring their manufacture back to your home country, says … [Read more...]
Desert solar – the race for the world’s biggest farm
When solar power was first conceived decades ago, the obvious locations for the farms were the world’s great deserts. Sure enough, the biggest farms are being built there reports Arasan Aruliah. … [Read more...]
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