Feeds

Wind, solar could provide 99.9% of ALL POWER by 2030

Even better: It could do so at the same cost as fossil fuels

Top 5 reasons to deploy VMware with Tegile

A group of researchers has released a study that claims to shoot down the common perception that clean, renewable energy from wind and solar sources is all well and good, eco-wise, but that it's too uncertain, sporadic, and pricey for widespread use.

"These results break the conventional wisdom that renewable energy is too unreliable and expensive," said professor Willett Kempton of the University of Delaware in a statement. "The key is to get the right combination of electricity sources and storage – which we did by an exhaustive search – and to calculate costs correctly.”

This good news is detailed in a paper available online now and scheduled to be published in the March 2013 issue of the scholarly Journal of Power Sources, straightforwardly entitled "Cost-minimized combinations of wind power, solar power and electrochemical storage, powering the grid up to 99.9% of the time".

When Kempton referred to an exhaustive effort, he wasn't merely whistling the proverbial Dixie. The six authors of the paper used computer modeling to study 28 billion – that's with a "B" – combinations of energy sources and storage techniques. Each of those 28 beeeelion combos were tested against four years of actual hourly weather data, along with electricity-demand data from PJM Interconnection, a power grid that serve 13 states from New Jersey to South Carolina to Illinois – about one-fifth of the US grid.

Big enough sample for ya?

As a result of this intensive modeling effort, the researchers say they've discovered that a carefully designed combination of renewable sources – wind and solar – with batteries and fuel-cell electricity-storage systems could by 2030 supply enough power to keep a large electrical grid fired up 99.9 per cent of the time, and do so at a cost comparable to today's not-so-renewable energy grid.

Graph of the results of the University of Delaware renewable-energy study

Four years of historical data applied to a mega-sized renewables, storage, and fossil-fuel grid model

Cost was central to the team's work. With this in mind, one of the things that they discovered is that it's cheaper to crank out more juice than needed during hours of average need – as much as three times as much – than it is to store all the extra energy for later use. Those batteries and fuel cells ain't cheap.

One of the key elements in their plan would be to have a widespread geographical distribution of such intermittent sources as wind farms and photovoltaic installations – when it's windy and sunny in one location on the grid, it could be calm and overcast in another and all parts of the grid would have enough power.

Another aspect of their plan is to use some of that extra renewable capacity, when it's available and when storage capacity is full, to substitute for natural gas for home and business heating.

Fossil-fuel sources wouldn't be abandoned entirely. There would likely be times when neither wind nor solar could provide enough juice, and when storage had been depleted. When that happens, they say, it'd be time to fire up the ol' CO2 spewers and spin their turbines. Doing that, however, would be a last resort, and not the first, as is true in much of the US's power grid today.

While the idea of a large, geographically diverse renewable-energy grid might seem heinously expensive, the paper's authors contend that if current estimates are correct that by 2030 wind and solar capital costs will be about half of what they are today, by that date a renewable system would be as cost effective as a fossil fuel system, and all without government subsidies.

There is one cost sweetener in their calculations, however: their cost estimates for that comparison includes the costs related to the human health effects of fossil fuel–caused air polution.

Those are costs, of course, that are not borne by the electric power industry. Yet. ®

Top 5 reasons to deploy VMware with Tegile

More from The Register

next story
Renewable energy 'simply WON'T WORK': Top Google engineers
Windmills, solar, tidal - all a 'false hope', say Stanford PhDs
SEX BEAST SEALS may be egging each other on to ATTACK PENGUINS
Boffin: 'I think the behaviour is increasing in frequency'
Post-pub nosh neckfiller: The MIGHTY Scotch egg
Off to the boozer? This delicacy might help mitigate the effects
I'M SO SORRY, sobs Rosetta Brit boffin in 'sexist' sexy shirt storm
'He is just being himself' says proud mum of larger-than-life physicist
NASA launches new climate model at SC14
75 days of supercomputing later ...
The next big thing in medical science: POO TRANSPLANTS
Your brother's gonna die, kid, unless we can give him your, well ...
Britain's HUMAN DNA-strewing Moon mission rakes in £200k
3 days, and Kickstarter moves lander 37% nearer takeoff
prev story

Whitepapers

Choosing cloud Backup services
Demystify how you can address your data protection needs in your small- to medium-sized business and select the best online backup service to meet your needs.
A strategic approach to identity relationship management
ForgeRock commissioned Forrester to evaluate companies’ IAM practices and requirements when it comes to customer-facing scenarios versus employee-facing ones.
10 threats to successful enterprise endpoint backup
10 threats to a successful backup including issues with BYOD, slow backups and ineffective security.
Reg Reader Research: SaaS based Email and Office Productivity Tools
Read this Reg reader report which provides advice and guidance for SMBs towards the use of SaaS based email and Office productivity tools.
Internet Security Threat Report 2014
An overview and analysis of the year in global threat activity: identify, analyze, and provide commentary on emerging trends in the dynamic threat landscape.