Catherine Wolfram at the Haas School of Business reviews the new book âHow Solar Energy Became Cheapâ by Greg Nemet. It traces Solar PVâs history from Bell Labs in 1954 through to the present. The phenomenal price drops mean todayâs cost/kWh is 1,000 times lower than in the 1970s. The analysis is split into four epochs when output was dominated by US, Japanese, then German and finally Chinese production. How much were improvements thanks to sheer … [Read more...]
Can Vanadium Flow Batteries beat Li-ion for utility-scale storage?
Itâs taken 40 years for lithium-ion battery technology to evolve into its current state, powering everything from the smallest electronic devices to Teslaâs 100MW battery farm in southern Australia. But utility-scale Li-ion batteries are rare. 99% of grid storage today is pumped hydro, a solution that will always be limited by geographical and environmental constraints. For utility-scale chemical batteries to take off they need a new technology, … [Read more...]
Why coordinated Dutch-German climate action is critical for Europe
Both the Netherlands and Germany are about to propose major new national climate measures. If the proposals become law, they will enforce some of the most stringent national targets for GHG reductions in the world. Itâs why, on 22 August, Dutch Prime Minister Mark Rutte will host a meeting with German Chancellor Angela Merkel and her âclimate cabinetâ. Coordinated Dutch-German climate action can make these neighbouring countries role models for … [Read more...]
Utility-scale batteries can undercut peaking gas and coal
A report by IEEFA looks at trends in the U.S. to install utility scale batteries. The reportâs author, Dennis Wamsted, gives examples of how it is replacing the peaking and seasonal generation being provided by gas and coal. Emissions aside, the numbers are starting to add up. In Hawaii the combination of solar generation and storage is expected to undercut the price for fossil fuel generation. In Texas, Vistra Energyâs batteries are soaking up … [Read more...]
Overbuild solar: itâs getting so cheap curtailment wonât matter
Avoiding curtailment made sense when solar generation was extremely expensive: donât build solar beyond what you can store. However, that means solar must always wait for storage costs to decline and capacity grow. But with solar prices plummeting it can make economic sense to overbuild it, say Richard Perez, University at Albany, and Karl Rabago, Pace University. Oversized solar will deliver more energy in low light and reduce the need for … [Read more...]
Smart Charging: parked EV batteries can save billions in grid balancing
95% of a carâs time is spent parked. Itâs why parked and plugged-in EVs could be the battery banks of the future, stabilising grids powered by wind and solar. More than 1bn EVs could be on the road by 2050, their 14 TWh of EV batteries dwarfing the projected 9 TWh of stationary batteries, according to the IRENA report âInnovation Outlook: smart charging for electric vehiclesâ. Smart charging could therefore save billions of dollars in grid … [Read more...]
IEA clean energy progress report: Only 7 technologies/sectors on track, 38 not
Of the 45 energy technologies and sectors assessed in the IEAâs latest Tracking Clean Energy Progress (TCEP) report, only 7 are on track with the IEAâs Sustainable Development Scenario (SDS). Itâs their latest and most comprehensive assessment of clean energy transitions. âOn trackâ includes energy storage, EVs and solar PV. But buildings, car, flaring and methane emissions are still rising. This yearâs TCEP puts much greater emphasis on … [Read more...]
Competitive battery storage: InnoEnergy doubles prize to accelerate start-ups entry to market
Utilities and other investors are putting more funds than ever into a battery storage market worth an estimated $250 billion. Right on cue, European clean energy innovation engine InnoEnergy announced a global call for storage entrepreneurs. Their âŹ100,000 first prize meant applications from a diverse range of start-ups flooded in. But which of these should be fast-tracked into this competitive market? At a special event which highlighted a … [Read more...]
New âGas for Climateâ scenarios: can green gas and hydrogen save gas pipelines?
Gas has a key role to play in decarbonising the energy sector. Until a comprehensive clean energy network can accommodate variable renewables using storage, baseload power will be needed. Natural gas is a lower carbon option than coal, so there is a strong case for it to be the first-choice bridging fuel towards a net-zero energy economy. However, exactly how much gas, what type of gas and how existing infrastructure can store energy in the form … [Read more...]
Flexible renewable power: Spain to triple solar thermal capacity by 2030
Sunny Southern Europe will become increasingly connected to its Central and Northern European neighbours with the ongoing development of cross border interconnectors. This is one of the crucial factors behind Spainâs decision to include an additional 5 GW capacity from STE/CSP plants in its Integrated National Energy and Climate plan (NECP). Complete with inherent storage capabilities, STE can provide flexible, dispatchable power supply at … [Read more...]
Utilities are starting to invest in big batteries instead of building new power plants
There has been a dramatic drop in battery costs in recent years. Jeremiah Johnson and Joseph F. DeCarolis, of North Carolina State University, say if this continues grid-scale batteries could supplant the usual solutions to peak electricity demand: gas power plants and transmission lines. Inevitably, this will depend on the future price of gas, and the changing policy environment. But one thing is for sure: utilities donât want to invest in peak … [Read more...]
IEA: Battery storage races to keep up with solar and windâs demand-matching challenges
Yesterdayâs article from the IEA posed the question: will solarâs 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, âflexibilityâ â the ability of the power system to quickly adapt to changes in power supply and demand â needs to grow by some 80% in the next decade … [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 BrudermĂźller, … [Read more...]
VW joins Tesla and BMW – EV and energy company all-in-one pays for business and consumers
Last weekâs announcement by VW that it is setting up a company called âElliâ (short for Electric Life) offering energy services shows VWâs vision of what lies ahead for the automotive industry. It brings them head to head with Tesla and BMW who are already playing a role outside the traditional bounds of the car business. They are the new breed, ready to profit from customers who want to go electric as long as it makes financial as well as … [Read more...]
Nuclear – critical choice for 2050
As the urgency of the climate crisis becomes more obvious, nuclear power is drawing another look. The power sector needs to develop to meet climate targets. Renewables (RES) have taken significant share of the energy mix in recent years but going further means securing far more investment and solving the complex challenge of integrating variable power. There is a need for alternatives to run alongside RES, keeping us on track. Matthew Wald from … [Read more...]
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