I was recently asked: do renewable power plants impact the environment? Quite obviously the questioner was seeking to justify pursuing the fossil-fuelled status quo by nit-picking faults in the case for clean energy. This led me to reflect on some environmental...

Alternatives to CAES for provision of arbitrage, balancing, ancillary, stability and other services come from power stations, pumped hydro-electric stations, batteries, Demand Side Response (DSR), interconnectors and ignorance. Power Stations Power stations are being...

Hydrogen will play a significant role in zero-carbon economies in the future. It can be stored at large scale, especially in salt caverns which can be formed in much of the world; It can be stored at ultra-high pressure – vehicle makers are considering up to 700bar:...

Storelectric’s CAES plants are usually designed as stand-alone plants with stand-alone profits based on buying electricity from the grid and selling it back to the grid. There are many up-side revenue streams available, such as buying and selling under PPAs (Private...

Grid-scale electricity storage using an innovative form of Compressed Air Energy Storage When discussing adiabatic CAES, such as that proposed by Storelectric, it is frequently confused with isothermal CAES such as that proposed by Lightsail, SustainX and General...

Introduction The current regulatory and contractual framework is designed around a 20th century industry (baseload coal and nuclear, dispatchable gas, all other bits are add-ons). The cost of electricity is diverging increasingly from its price: already around half of...

There have been a number of reports claiming that the German experience proves that what’s needed on the system is not baseload (described as “poison”) or storage, but lots of flexibility. A rational analysis of these articles finds numerous contradictions and errors....

The Energy Transition The energy transition to a zero-carbon economy is, quite correctly, seeing widespread roll-out of tens of GW of renewable generation. we're already at over 30GW and, because of load factors, to supply our 56GW peak demand will need over 200GW...

CAES or Batteries? Many people have suggested that batteries are a viable way forward for grid-scale electricity storage, and some have cast doubt on whether there is a role for Compressed Air Energy Storage (CAES). However CAES, batteries and the other storage...

Conventional Energy There are two main disadvantages with conventional energy: pollution and concentration. Pollution is in many forms throughout the process. The worst and most enduring is emissions-related climate change, well proven and fully discussed. But...

This article considers the question: as renewables become adopted more, how will that change the utility companies’ business models? The answer is: it depends which utility companies: those involved in generation, transmission / distribution, or retail? And note that...

What would such a system look like? A de-carbonised energy system would be built up of many diverse elements selected to be the most suitable mix for each location. There is no single answer or “magic bullet”, no “winning technology” for powering the world, or even...

I was recently asked: do I truly care about climate change or not, and why? Yes, I care – enough to forego 4 years’ earnings (out of 6.5 years working at this job) and still be earning less than I would in another job, as well as working long hours. I do it because,...

100% renewable energy is a target for the energy systems by 2040, though if it can be achieved by 2030 (which I doubt), then so much the better. It’s important for energy to go to zero because it’s possible without additional costs in the overall system, if done...

Introduction This analysis is re-written in fundamental ways as compared with the 2017 analysis, because the Future Energy Scenarios have changed markedly, and largely for the better. Two of the scenarios are legally compliant to the Climate Change Act 2008, offering...

There are, by my analysis, 5 scales of storage. Rising in factors of 10 in both scale and duration, they are domestic, local, area, regional and national. Just as the road network (and many other things) needs all scales to operate, so does the energy storage...

Everyone should seek to transform their electricity system to a renewable one, in every region of the world, but not unthinkingly - otherwise the consequent blackouts and price increases would blacken the name of renewable energy. There are a number of steps,...