The clean energy economy is making its mark on global GDP, explain Laura Cozzi, Timur GĂĽl, Thomas Spencer and Peter Levi at the IEA. It accounted for 10% of global GDP growth in 2023, primarily through three activities: manufacturing of clean energy technologies, deployment of clean power capacity, and clean equipment sales. Here, the authors present the in-depth results for four of the largest economies: the U.S, the EU, China and India, which … [Read more...]
Strict rules stop Green Hydrogen production diverting clean power from the grid. What are they?
Green hydrogen must be made from green electricity. But the electricity used for making it must fulfil stricter requirements than conventional green electricity. Matthis Brinkhaus at Energy Brainpool describes the criteria by which hydrogen can be designated as 100% renewable: Additionality; Additionality Plus; Temporal correlation, simultaneity; Geographical correlation, regionality. Brinkhaus points at where exceptions can be made, and where … [Read more...]
Batteries made of super-hot sand: for long-duration grid storage at $4 to $10 per kWh
Our electric future needs low-cost long-duration storage for grids. Per kWh, pumped hydropower is about $60, compressed air energy storage (CAES) costs from $150 to $300, and lithium-ion batteries cost around $300 (and only store energy from one to four hours). Wayne Hicks at NREL describes research into thermal energy storage (TES) using solid particles such as sand which is abundant worldwide. With a duration lasting hundreds of hours, … [Read more...]
Iron-air batteries: long-duration grid storage targets 1/10th the cost of lithium-ion
Wind and solar need cheap, long-duration storage to even out its inherent weather-determined intermittency. Deborah Halber, writing for MIT News, describes the development of iron-air batteries. Iron is cheap and available worldwide. Storage duration is multi-day. They are much heavier and take up more space than lithium-ion batteries, but that doesn’t matter for immobile grid storage. The target price tag of $20/kWh (one-tenth the cost of … [Read more...]
Europe’s cross-border Interconnectors: how JAO auctions optimise energy flows, prices
Interconnectors allow for cross-border flows of energy between two markets that would otherwise not be connected. Through an economic convergence between supply and demand, the cheapest marginal producer located anywhere in these two markets should be able to set market prices. As Jean-Baptiste Vaujour at the Emlyon Business School explains, the central question is to find an optimal allocation of the scarce interconnection capacity between the … [Read more...]
Financing Europe’s cross-border Interconnectors to deliver energy security, lower prices: a look at incentives and policies
The EU and its Member States are building out interconnectors to improve security of supply and affordability of electricity through the physical and economic linking of national energy markets into a single, synchronised European market. But each interconnector is expensive, complex and therefore risky. They can span long distances or natural obstacles such as mountains or seas. Significant network planning and adaptation is needed to account … [Read more...]
ReDREAM pilot: mobile app for real-time green energy availability, prices, to control your usage
We already have the technology to allow households to monitor and control their energy usage so they can run individual appliances when the energy is cheapest and greenest. It just needs to be tested and then deployed at scale. Luca Arfini, writing for ESCI, describes the EU-funded ReDREAM project where over 700 people in four countries have had the monitoring installed in their homes, and been given the mobile app to control their usage. … [Read more...]
Batteries are still getting exponentially cheaper, more efficient: ready to displace half of global fossil fuel demand by 2045?
A new report by RMI says batteries are on the path to replace 175 EJ of fossil fuel demand in the power sector, 86 EJ of fossil fuels from road transport and can put at risk another 23 EJ from shipping and aviation. That equates to a phaseout of half of global fossil fuel demand in the next two decades. Daan Walter, Sam Butler-Sloss and Kingsmill Bond at RMI summarise the findings in six graphs with explanations. Battery sales are growing … [Read more...]
Clean energy forecast map tells firms where to build their facilities to minimise emissions
For companies that are serious about their net-zero targets, where you run a facility affects your results. Building a new facility in a region where renewables are ramping up will keep your emissions low. Connor O'Neil at NREL explains how analysts there, in partnership with Amazon, are building out datasets that take a forward look at where clean energy is growing. The “Cambium” data sets contain modelled hourly emission, cost, and operational … [Read more...]
Another good year for Renewables. But can we triple Wind and Solar by 2030?
COP28 saw a calling for a tripling of renewable capacities by 2030, off the back of positive signs. In 2022, 80% of incremental power demand and 12% of electricity generated worldwide came from solar and wind. And the IEA believes solar generation can grow at 25% to 2030. But, as Ramnath Iyer at IEEFA explains, specific challenges must be met to ramp up successfully. The non-financial barriers include a lack of policy clarity, permitting, and … [Read more...]
Modelling revenue potential for Germany’s Battery Storage future
In the last ten years Germany has installed battery storage systems totalling 6.5 GW of power and 10.1 GWh of energy. Storage is an essential part of every nation’s electrification plans: for peak shaving, uninterruptible power for industrial customers, use as a buffer, and self-supply in households. Elena Dahlem and Alex Schmitt at Energy Brainpool start with a summary of storage’s use in the household, industrial and large-scale sectors. They … [Read more...]
Making solid fuel from captured CO2 (with a 96% conversion rate)
What if CO2 could be captured and, rather than locked away underground for eternity, turned into a stable powder that can be used in fuel cells to produce electricity? David Chandler at MIT describes research there and at Harvard that has demonstrated a new process that has a 96% conversion rate. It’s been tried before, but the conversion rates were an unusable 20%. The CO2 is converted into formate and used like hydrogen or methanol (both strong … [Read more...]
What does cutting-edge Smart Metering look like as Grids become increasingly complex?
The global growth in electrification means grids everywhere are facing new opportunities as well as big challenges. Intermittent renewables, distributed energy generation, and the need to use every kWh as efficiently as possible means Distribution System Operators (DSO), in particular, must deploy optimisation solutions, and fast. Gridspertise provides state-of-the-art solutions for the digital transformation of electricity distribution networks. … [Read more...]
Thermal Energy Storage for heating and cooling Buildings: finding materials that melt at room temperature
Thermal Energy Storage (TES) in individual buildings can cut heating and cooling costs while delivering grid stability, explains Ryan Horns writing for NREL. Back in the 1800s blocks of ice were shipped to cities to cool buildings down. Today, research is underway to identify materials that can be heated or cooled by excess grid power and release or absorb heat when needed. Similarly, materials are being researched and developed that “phase … [Read more...]
1,500GW of Renewables deployment delayed globally because Grids aren’t modernising fast enough
A first-of-its-kind global country-by-country study, “Electricity Grids and Secure Energy Transitions” by the IEA finds that electricity grids are not keeping pace with the rapid growth of clean energy technologies. Without greater policy attention and investment, shortfalls in the reach and quality of grid infrastructure puts at risk our climate goals. Worldwide, we need to add or replace 80m kms of power lines by 2040 – an amount equal to the … [Read more...]
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