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Dr Iain Staffell Profile picture
Dr Iain Staffell
@iain_staffell
Senior Lecturer in Sustainable Energy || https://t.co/QLiMvZVTUN || https://t.co/C4ZIpxbwUi || https://t.co/R5Q6yxIGiY || https://t.co/OLP4nOsnO5
Aug 18, 2023 • 8 tweets • 2 min read
How ‘long’ should long-duration energy storage be, and how soon will we need it?

This graph shows we can get quite far along the energy transition with the storage techs we are deploying today! But by the 2030s, multi-day storage will be needed to reach higher renewable shares. The relationship between the share of wind and solar electricity generation and the share which can be consumed (accounting for mismatch between supply and demand) with different energy storage capacities and round-trip efficiencies. Different colours refer to different sizes and round-trip efficiencies of energy storage capacity. Based on meteorological and demand data for 1991–2019 for Great Britain. Average annual electricity demand is ~320 TWh. hours = Average load hour, indicating the average hourly electricity demand. RT = Round-trip efficiency. Chart from 'Monetizing Energy Stor... The graph shows much renewable energy can be used as its share increases. As you start going beyond 50% VRE share, the time mismatch between supply and demand means that without flexibility, some will get wasted (curtailed).
Mar 23, 2023 • 5 tweets • 3 min read
Are you losing sleep over which energy storage technology is best for which application? 😴

Let me introduce "competitive landscape" charts, show you what insights they offer, and give you the tools to make your own!
👇🧵 Charts showing which energy storage technology has the lowes These ‘competitive landscape’ charts show the technologies with the lowest lifetime cost across all discharge durations and cycling rates. They cover second-by-second balancing (in the bottom right) up to inter-seasonal storage (top left), and everything in between.
Mar 13, 2019 • 6 tweets • 2 min read
I was utterly floored by an email yesterday. A 12 year old boy wrote to ask "what can my generation do to convince the politicians to act on climate change and get our country off fossil fuels?"

I'm looking for advice from Twitter to give him the response he deserves... [1/5] My thoughts so far (with the help of friends) are:

(1) The fact you're asking these questions and care about them is the most important thing.

(2) Nurture your curiosity and passion. Read up, go to talks, study hard so you have the skills you need to change the future. [2/5]