Connect with us

Economy

Tidal lagoon renewable energy plants could add £27bn to UK economy

Published

on

A new wave of six tidal lagoon power plants could contribute £27 billion to the UK economy over a 12-year period starting in 2015, according to a new study.

Plans for the world’s first tidal lagoon – a proposed £850 million project in Swansea Bay – are currently going through a phase of public examination.

The plant will enclose an 11.5 sq km area of the bay in a six-mile horseshoe shaped sea wall, using the ebb and flow of the tide to turn turbines and generate predictable renewable energy.

Tidal Lagoon Power Limited, the company that has put forward the plans, also hopes to build five more lagoons around the UK coastline within the next decade. 

In a new study published on Wednesday by the Centre for Economics and Business Research (Cebr), analysts say these plants would add billions to Britain’s economy during the investment programme from 2015 to 2027.  

Because many of the required components can be sourced from the UK, the study finds that tidal lagoons represent one of the best returns on investment in terms of GDP impact in the energy sector. 

There would also be big potential for exports of up to £70 billion, as the UK could become a world leader in tidal lagoon technology.

Overall, the report says that six lagoons could create or sustain as many as 39,700 jobs while accounting for 0.24% of annual GDP. They could also sustainably provide as much as 8% of the UK’s electricity and build security of supply. 

“The UK is losing its hard-fought energy independence and struggling to identify genuine drivers of growth. We’ve been here before,” said Douglas McWilliams, executive chairman and chief economist at Cebr.

“The response in the 1970s was to support a domestic offshore oil & gas industry which became a world leader and has delivered huge benefits to the UK economy. 

“This report shows why today’s response to the same challenges to energy sovereignty and economic growth would do well to exploit the new opportunity presented by tidal lagoons.” 

A separate report, recently published by Pӧyry Management Consulting, also concluded that further lagoon projects could provide energy significantly cheaper than offshore wind farms – the government’s preferred renewable energy source.

Should the plans receive approval, Tidal Lagoon Power Limited hope that construction will begin in Swansea in spring 2015, with the world’s first tidal lagoon-sourced electricity generated in 2018. 

The project is expected to generate 495 gigawatt hours (GWh) of clean, green electricity for every year of its 120-year lifetime. That is enough for 155,000 homes – or about 11% of Wales’ domestic use.

“The UK will soon decide whether or not to embrace tidal lagoon infrastructure,” said Tidal Lagoon Power CEO Mark Shorrock.

“Having analysed all of the costs and all of the savings associated with this decision, this study clearly demonstrates that the annual benefits to the national economy would be enormous, immediate and long-lived. 

“To realise this opportunity in full, we will have to marry economic benefit with environmental sensitivity and social acceptance.”

Photo: Tidal Lagoon Power Limited

Further reading:

Good Energy invests in Swansea Bay Tidal Lagoon

Tidal lagoons could provide cheaper electricity than offshore wind

Swansea Bay Tidal Lagoon plans accepted for consideration

Swansea Bay Tidal Lagoon could inject £300m into Welsh economy

Application submitted for ‘game-changing’ Swansea Bay tidal lagoon

 

Economy

Will Self-Driving Cars Be Better for the Environment?

Published

on

self-driving cars for green environment
Shutterstock Licensed Photo - By Zapp2Photo | https://www.shutterstock.com/g/zapp2photo

Technologists, engineers, lawmakers, and the general public have been excitedly debating about the merits of self-driving cars for the past several years, as companies like Waymo and Uber race to get the first fully autonomous vehicles on the market. Largely, the concerns have been about safety and ethics; is a self-driving car really capable of eliminating the human errors responsible for the majority of vehicular accidents? And if so, who’s responsible for programming life-or-death decisions, and who’s held liable in the event of an accident?

But while these questions continue being debated, protecting people on an individual level, it’s worth posing a different question: how will self-driving cars impact the environment?

The Big Picture

The Department of Energy attempted to answer this question in clear terms, using scientific research and existing data sets to project the short-term and long-term environmental impact that self-driving vehicles could have. Its findings? The emergence of self-driving vehicles could essentially go either way; it could reduce energy consumption in transportation by as much as 90 percent, or increase it by more than 200 percent.

That’s a margin of error so wide it might as well be a total guess, but there are too many unknown variables to form a solid conclusion. There are many ways autonomous vehicles could influence our energy consumption and environmental impact, and they could go well or poorly, depending on how they’re adopted.

Driver Reduction?

One of the big selling points of autonomous vehicles is their capacity to reduce the total number of vehicles—and human drivers—on the road. If you’re able to carpool to work in a self-driving vehicle, or rely on autonomous public transportation, you’ll spend far less time, money, and energy on your own car. The convenience and efficiency of autonomous vehicles would therefore reduce the total miles driven, and significantly reduce carbon emissions.

There’s a flip side to this argument, however. If autonomous vehicles are far more convenient and less expensive than previous means of travel, it could be an incentive for people to travel more frequently, or drive to more destinations they’d otherwise avoid. In this case, the total miles driven could actually increase with the rise of self-driving cars.

As an added consideration, the increase or decrease in drivers on the road could result in more or fewer vehicle collisions, respectively—especially in the early days of autonomous vehicle adoption, when so many human drivers are still on the road. Car accident injury cases, therefore, would become far more complicated, and the roads could be temporarily less safe.

Deadheading

Deadheading is a term used in trucking and ridesharing to refer to miles driven with an empty load. Assume for a moment that there’s a fleet of self-driving vehicles available to pick people up and carry them to their destinations. It’s a convenient service, but by necessity, these vehicles will spend at least some of their time driving without passengers, whether it’s spent waiting to pick someone up or en route to their location. The increase in miles from deadheading could nullify the potential benefits of people driving fewer total miles, or add to the damage done by their increased mileage.

Make and Model of Car

Much will also depend on the types of cars equipped to be self-driving. For example, Waymo recently launched a wave of self-driving hybrid minivans, capable of getting far better mileage than a gas-only vehicle. If the majority of self-driving cars are electric or hybrids, the environmental impact will be much lower than if they’re converted from existing vehicles. Good emissions ratings are also important here.

On the other hand, the increased demand for autonomous vehicles could put more pressure on factory production, and make older cars obsolete. In that case, the gas mileage savings could be counteracted by the increased environmental impact of factory production.

The Bottom Line

Right now, there are too many unanswered questions to make a confident determination whether self-driving vehicles will help or harm the environment. Will we start driving more, or less? How will they handle dead time? What kind of models are going to be on the road?

Engineers and the general public are in complete control of how this develops in the near future. Hopefully, we’ll be able to see all the safety benefits of having autonomous vehicles on the road, but without any of the extra environmental impact to deal with.

Continue Reading

Economy

New Zealand to Switch to Fully Renewable Energy by 2035

Published

on

renewable energy policy
Shutterstock Licensed Photo - By Eviart / https://www.shutterstock.com/g/adrian825

New Zealand’s prime minister-elect Jacinda Ardern is already taking steps towards reducing the country’s carbon footprint. She signed a coalition deal with NZ First in October, aiming to generate 100% of the country’s energy from renewable sources by 2035.

New Zealand is already one of the greenest countries in the world, sourcing over 80% of its energy for its 4.7 million people from renewable resources like hydroelectric, geothermal and wind. The majority of its electricity comes from hydro-power, which generated 60% of the country’s energy in 2016. Last winter, renewable generation peaked at 93%.

Now, Ardern is taking on the challenge of eliminating New Zealand’s remaining use of fossil fuels. One of the biggest obstacles will be filling in the gap left by hydropower sources during dry conditions. When lake levels drop, the country relies on gas and coal to provide energy. Eliminating fossil fuels will require finding an alternative source to avoid spikes in energy costs during droughts.

Business NZ’s executive director John Carnegie told Bloomberg he believes Ardern needs to balance her goals with affordability, stating, “It’s completely appropriate to have a focus on reducing carbon emissions, but there needs to be an open and transparent public conversation about the policies and how they are delivered.”

The coalition deal outlined a few steps towards achieving this, including investing more in solar, which currently only provides 0.1% of the country’s energy. Ardern’s plans also include switching the electricity grid to renewable energy, investing more funds into rail transport, and switching all government vehicles to green fuel within a decade.

Zero net emissions by 2050

Beyond powering the country’s electricity grid with 100% green energy, Ardern also wants to reach zero net emissions by 2050. This ambitious goal is very much in line with her focus on climate change throughout the course of her campaign. Environmental issues were one of her top priorities from the start, which increased her appeal with young voters and helped her become one of the youngest world leaders at only 37.

Reaching zero net emissions would require overcoming challenging issues like eliminating fossil fuels in vehicles. Ardern hasn’t outlined a plan for reaching this goal, but has suggested creating an independent commission to aid in the transition to a lower carbon economy.

She also set a goal of doubling the number of trees the country plants per year to 100 million, a goal she says is “absolutely achievable” using land that is marginal for farming animals.

Greenpeace New Zealand climate and energy campaigner Amanda Larsson believes that phasing out fossil fuels should be a priority for the new prime minister. She says that in order to reach zero net emissions, Ardern “must prioritize closing down coal, putting a moratorium on new fossil fuel plants, building more wind infrastructure, and opening the playing field for household and community solar.”

A worldwide shift to renewable energy

Addressing climate change is becoming more of a priority around the world and many governments are assessing how they can reduce their reliance on fossil fuels and switch to environmentally-friendly energy sources. Sustainable energy is becoming an increasingly profitable industry, giving companies more of an incentive to invest.

Ardern isn’t alone in her climate concerns, as other prominent world leaders like Justin Trudeau and Emmanuel Macron have made renewable energy a focus of their campaigns. She isn’t the first to set ambitious goals, either. Sweden and Norway share New Zealand’s goal of net zero emissions by 2045 and 2030, respectively.

Scotland already sources more than half of its electricity from renewable sources and aims to fully transition by 2020, while France announced plans in September to stop fossil fuel production by 2040. This would make it the first country to do so, and the first to end the sale of gasoline and diesel vehicles.

Many parts of the world still rely heavily on coal, but if these countries are successful in phasing out fossil fuels and transitioning to renewable resources, it could serve as a turning point. As other world leaders see that switching to sustainable energy is possible – and profitable – it could be the start of a worldwide shift towards environmentally-friendly energy.

Sources: https://www.bloomberg.com/news/articles/2017-11-06/green-dream-risks-energy-security-as-kiwis-aim-for-zero-carbon

https://www.reuters.com/article/us-france-hydrocarbons/france-plans-to-end-oil-and-gas-production-by-2040-idUSKCN1BH1AQ

Continue Reading
Advertisement

Facebook

Trending