Showing posts with label energy saving. Show all posts
Showing posts with label energy saving. Show all posts

Tuesday, 16 June 2009

Sainsbury's brings green power to the checkout with 'kinetic plates'

A supermarket chain will open its first "people-powered" store this week using technology that captures energy from vehicles to power its checkouts.

In a European first, Sainsbury's will install the invention at its new store in Gloucester, opening this Wednesday.

Energy will be captured every time a vehicle drives over "kinetic road plates" in the car park and then channelled back into the store.

The kinetic road plates are expected to produce 30 kWh of green energy every hour — more than enough energy to power the store's checkouts. The system, pioneered for Sainsbury's by Peter Hughes of Highway Energy Systems, does not affect the car or fuel efficiency, and drivers feel no disturbance as they drive over the plates.

Alison Austin, Sainsbury's environment manager, said: "This is revolutionary. Not only are we the first to use such cutting-edge technology with our shoppers, but customers can now play a very active role in helping make their local shop greener, without extra effort or cost.

"We want to continue offering great value but we also want to make the weekly shop sustainable. Using amazing technology like this helps us reduce our use of carbon and makes Sainsbury's a leading energy-efficient business."

The kinetic road plates are one of a number of energy-saving measures at Sainsbury's new store in Gloucester Quays, Gloucester. The store will harvest rainwater to flush the store's toilets and solar thermal panels will heat up to 100% of the store's hot water during the summer, and more than 90% of the construction waste was re-used or recycled.

David Sheehan, director of store development and construction at Sainsbury's, said: "The new environmental features within the Gloucester Quays store mark a very exciting time in store development. We are able to use cutting-edge technology to improve our services and the store environment for our customers and colleagues, at the same time as ultimately reducing our carbon footprint across the UK."

Source - The Guardian

Thursday, 21 May 2009

Looming energy gap according to energy industry leaders

The UK must avoid being lured into a new dash for gas as it seeks to bridge a looming power generation gap, according to energy industry leaders.

Ministers and the industry are committed to a range of power-generation options, from nuclear and cleaner coal through gas to renewables and energy saving, but striking the right balance may not be easy. New nuclear reactors are the best part of a decade away, even on optimistic assumptions. Coal is controversial and its future looks to be closely tied to the ability to develop carbon capture and storage. In terms of generation, that leaves gas and renewables to take the strain as a raft of ageing or environmentally unacceptable generating plant is taken out of service.

David Porter, chief executive of the Association of Electricity Producers, argues that in the long run Britain “could be well very well provided with a diverse range of technologies for power generation”. The problem is the near term: around a third of the UK’s generating capacity may need to be replaced by 2015. Some analysts believe the crunch could come earlier.

“At the moment companies are having to go ahead with what looks to be easiest,” Porter says. “Despite supply scares and price volatility, gas-fired generation is still easier to do than most.”

Recent developments back his view. The government has just given the green light to three gas-fired power plants, including a 2 gigawatt power station in Pembrokeshire.

Ian Marchant, chief executive of Scottish and Southern Energy, said this month that Britain will lose 14 to 18GW of capacity by 2015. He told the Commons business and enterprise committee that some 7GW of gas generating capacity was under construction and another 6GW had been given the go-ahead. That is balanced by some 46 renewable projects, providing about 5 megawatts of power generation.

Paul Golby, chief executive of E.ON UK, said last week that it was vital the UK maintained a variety of options: “Clearly gas has an important part to play, both in the near and the medium term. But we can’t become overly reliant on a single form of power generation if we’re to ensure security of supply, reduce our carbon emissions and ensure energy remains affordable for our customers.

“The only way we can do that is to, yes, build gas-fired power stations… But we also need to ramp up our renewable build, create a new generation of cleaner and, eventually, clean coal-fired power stations - and, longer term, replace the UK’s nuclear fleet. To become overly reliant on a single fuel - and one that will, in the next decade or so, become 80% imported - is simply too dangerous.”

Centrica chief executive Sam Laidlaw says this winter’s row between Russia and Ukraine has brought security of supply issues sharply back into focus and that the UK needs to develop diverse sources of gas as its dependence on imports increases. “Russia will play a role in the long term… but also more LNG [liquefied natural gas] coming from other sources has to be the answer so we aren’t dependent on one source. But, thinking about power generation, we can’t have another dash for gas.”

EDF has placed a multi-billion-pound bet on the development of a new generation of nuclear power in the UK through its acquisition of British Energy. Its UK subsidiary, EDF Energy, plans to build four new nuclear reactors and is aiming to have the first coming on stream at the end of 2017. In the meantime, the company is building a 1.3GW gas plant in Nottinghamshire. “Until nuclear can come on line, it is likely that much of the energy gap will be filled by new ‘combined-cycle’ gas turbines, as these are relatively cheap, quick to build and flexible, meaning they are able to respond to market prices,” the company says.

Gas and renewables, notably wind, can be complementary, rather than alternatives, with gas taking on the back-up role as more wind generation comes on stream. A key test, however, is whether companies will be able to secure returns on their investment in gas if the plant runs only to supplement wind power.

Money is an issue. Ian Parrett from energy analyst Inenco says: “Funding difficulties in the current economic climate are resulting in new generating capacity being delayed or even shelved. The UK’s lack of gas storage leaves the country running the risk of being held to ransom and forced to pay a premium for gas in a highly volatile market.”

Friday, 27 February 2009

Looming energy gap according to energy industry leaders

The UK must avoid being lured into a new dash for gas as it seeks to bridge a looming power generation gap, according to energy industry leaders.

Ministers and the industry are committed to a range of power-generation options, from nuclear and cleaner coal through gas to renewables and energy saving, but striking the right balance may not be easy. New nuclear reactors are the best part of a decade away, even on optimistic assumptions. Coal is controversial and its future looks to be closely tied to the ability to develop carbon capture and storage. In terms of generation, that leaves gas and renewables to take the strain as a raft of ageing or environmentally unacceptable generating plant is taken out of service.

David Porter, chief executive of the Association of Electricity Producers, argues that in the long run Britain “could be well very well provided with a diverse range of technologies for power generation”. The problem is the near term: around a third of the UK’s generating capacity may need to be replaced by 2015. Some analysts believe the crunch could come earlier.

“At the moment companies are having to go ahead with what looks to be easiest,” Porter says. “Despite supply scares and price volatility, gas-fired generation is still easier to do than most.”

Recent developments back his view. The government has just given the green light to three gas-fired power plants, including a 2 gigawatt power station in Pembrokeshire.

Ian Marchant, chief executive of Scottish and Southern Energy, said this month that Britain will lose 14 to 18GW of capacity by 2015. He told the Commons business and enterprise committee that some 7GW of gas generating capacity was under construction and another 6GW had been given the go-ahead. That is balanced by some 46 renewable projects, providing about 5 megawatts of power generation.

Paul Golby, chief executive of E.ON UK, said last week that it was vital the UK maintained a variety of options: “Clearly gas has an important part to play, both in the near and the medium term. But we can’t become overly reliant on a single form of power generation if we’re to ensure security of supply, reduce our carbon emissions and ensure energy remains affordable for our customers.

“The only way we can do that is to, yes, build gas-fired power stations… But we also need to ramp up our renewable build, create a new generation of cleaner and, eventually, clean coal-fired power stations - and, longer term, replace the UK’s nuclear fleet. To become overly reliant on a single fuel - and one that will, in the next decade or so, become 80% imported - is simply too dangerous.”

Centrica chief executive Sam Laidlaw says this winter’s row between Russia and Ukraine has brought security of supply issues sharply back into focus and that the UK needs to develop diverse sources of gas as its dependence on imports increases. “Russia will play a role in the long term… but also more LNG [liquefied natural gas] coming from other sources has to be the answer so we aren’t dependent on one source. But, thinking about power generation, we can’t have another dash for gas.”

EDF has placed a multi-billion-pound bet on the development of a new generation of nuclear power in the UK through its acquisition of British Energy. Its UK subsidiary, EDF Energy, plans to build four new nuclear reactors and is aiming to have the first coming on stream at the end of 2017. In the meantime, the company is building a 1.3GW gas plant in Nottinghamshire. “Until nuclear can come on line, it is likely that much of the energy gap will be filled by new ‘combined-cycle’ gas turbines, as these are relatively cheap, quick to build and flexible, meaning they are able to respond to market prices,” the company says.

Gas and renewables, notably wind, can be complementary, rather than alternatives, with gas taking on the back-up role as more wind generation comes on stream. A key test, however, is whether companies will be able to secure returns on their investment in gas if the plant runs only to supplement wind power.

Money is an issue. Ian Parrett from energy analyst Inenco says: “Funding difficulties in the current economic climate are resulting in new generating capacity being delayed or even shelved. The UK’s lack of gas storage leaves the country running the risk of being held to ransom and forced to pay a premium for gas in a highly volatile market.”

Source- The guardian

Friday, 6 February 2009

Obama urges higher efficiency standards for household appliances

Barack Obama urged the energy department to adopt higher efficiency standards for household appliances that had been blocked for years by George Bush.

In a presidential memo, issued during a visit to the energy department meant to showcase Obama's commitment to the greening of the economy, the president called for new higher standards to be issued as early as next August.

The first round of higher standards would cover nine appliances, including ovens, lamps, micrwoaves, dishwashers and air conditioners. The directive applies to some 30 household and commercial electrical items.

"This will save consumers money. This will spur innovation and this will conserve tremendous amounts of energy," Obama said.

He was flanked by Steven Chu, the energy secretary who has long seen energy efficiency as a crucial part of the effort to reduce greenhouse gas emissions.

The push for household energy efficiency was seen as a further sign of Obama's determination to break with Bush policy on the environment.

In another development, the Obama administration showed it would take a far more robust approach to enforcing environmental protection. A lawsuit filed by the justice department charged the Westar power company of Kansas with failing to meet its legal obligation to install the best available pollution controls on its coal-fired plant.

Obama also used the visit to try and sell his economic rescue plan, saying the package, now approaching $900bn, would help spur the growth of clean energy, with new well-paying jobs in the wind and solar power industries.

Obama set aside some $30bn for energy efficiency measures in the economic rescue package now making its way through Congress, mainly modernising buildings.

The presidential memo on efficiency would seek to end a logjam at the energy department. The new energy standards demanded by Obama today were long overdue.

Congress has been pushing for nearly three decades for higher standards on household products such as water heaters and refrigerators. But the energy department has regularly missed deadlines for imposing the new standards.

It was not immediately clear whether Obama's directive would also lead to a review and possible tightening of the standards under consideration by the energy department.

The president said he asked the energy department to move ahead on those appliances that would produce the biggest savings for consumers.

The White House said the energy savings from the changes would save Americans $500bn on their electricity bills, or the equivalent of two years worth of emissions from all of America's coal-fired power plants over the course of 30 years.

In the justice department law suit, the Environmental Protection Agency notified Westar Power that it was in violation of pollution control requirements five years ago. However, under Bush, the EPA rarely followed up on enforcement.

The justice department said its suit was "part of a national initiative to stop illegal pollution from coal-fired power plants".

The move stoked expectations of similar actions against a number of other coal-fired plants.


Source - The guardian

Saturday, 13 September 2008

8 years to pay back solar panels costs

Solar panels are one of the most cost effective upgrades, according to the Royal Institution of Chartered Surveyors.

The cost of adding solar panels to the average home is between £1,700 - £4,000, and the energy savings are worth as little as £240 a year, according to Rics, meaning it could take as little as 8 years to pay back the price of installation.

The report also reveals that the average cost of replacing a wall-mounted boiler with a more energy-efficient version is about £1,700. But with expected savings of just £95 a year, it would take up to 18 years to offset the cost.

The most cost effective energy saving measure is cavity wall insulation. At a cost of between £440 and £2,400, depending on the size of the home, and an average energy savings of as much as £145 a year, the cost could be paid back over as little as three years.

Joe Martin, director, of Rics’s Building Cost Information Service, said: “We all have a role to play in helping to reduce our carbon footprint, be it through changes to our behaviour or by choosing greener alternatives. The reality is, however, that most people struggle with the cost, time, and effort it takes to make these changes.

“The Greener Homes Price Guide gives consumers a comprehensive heads-up about the costs and effectiveness of green upgrades, whilst protecting them from being duped into changes that won’t save them money or do little to reduce their carbon footprint.”

However, the solar panel industry vigoursly denied the claims. Andrew Lee, head of solar at Sharp Electronics, said. “Rics’s claim on solar panels is massively misleading and potentially damaging for both the UK solar industry and the UK’s renewable energy targets, being based on outdated and inaccurate information. Instead of 50 years plus for payback, most average installations will payback within approximately 12-15 years.

“Solar power works, it’s long term and effective – and it’s more than adequate to meet the UK’s energy demands. What’s more, once installed, solar power is free – and super-green - it can even add up to 10 per cent to the value of your home.”

Less than 100,000 properties in the UK have some form of microgeneration system, such as solar panels, wind turbines and heat pumps. In contrast, German householders installed more than 75,000 solar generation systems alone in 2006. In Germany, the Government pays people to generate their own electricity, which is fed into the National Grid.

The research by Rics follows an investigation by Times Money which discovered that wind turbines are rarely cost effective.

A large free-standing wind generator can cost anything from £12,000 to £24,000 to install. But they are only really economic or practical for people in rural areas, particularly those not connected to the electricity grid. Even then, and taking account of electricity fed back into the grid, it would take at least 15 years for them to pay for themselves.

The same goes for ground-source heat pumps. They take natural heat from the ground and boost it to useable levels using a small amount of external electricity.

The Energy Savings Trust, a government-backed group that promotes better energy use, says that a six-kilowatt ground-source heat pump will cost up to £10,000 to install and save as much as £750 a year in energy costs. But heat pumps work best with under floor heating, which can cost a further £20,000 to install.

Source - The Times

Friday, 8 August 2008

Shea Homes Offers Free Solar Power To Victoria Gardens Homebuyers

Victoria Gardens by Shea Homes will offer free solar power systems to its homebuyers through August 31. Shea Homes is the first builder to roll out a national solar offering and has chosen to work with BP Solar, a global leader in solar energy.

The initiative is part of the builder's ongoing commitment to reducing the carbon footprint of homes in all of its Shea Homes Active Lifestyle Communities across four states.

The BP Solar Home Solutions systems are estimated to reduce the homes' electric bills by up to 60 percent per home. This is in addition to the approximately 30 percent energy usage reduction Victoria Gardens by Shea Homes residences already achieve with the Shea Green Certified standards for home building.

Each home will be equipped with a 3-kilowatt solar power system, which helps provide security against electric rate increases, allowing consumers to hedge their future risks in the volatile energy markets.

"By providing our buyers with free solar energy systems, we're taking efficient energy use a step further by actually creating energy," said Jeff Gersh, Area Vice President of Victoria Gardens, which features Shea Homes residences. "This provides both short-term and long-term benefits for our customers in the form of significant cost savings, and it also makes a positive impact on the environment."

"With the addition of solar in a home, we're no longer just efficient users of electricity, we become producers. Integrating a solar system into a home during construction makes it more accessible and affordable than it's ever been. Victoria Gardens' homes pass the true test of a 'green' home by integrating a mix of energy-saving and energy-generating devices that deliver immediate and long-term benefits for our customer."

Solar systems will be free through August 31 to new homebuyers in Shea Active Lifestyle Communities in Arizona, California, Washington and Florida, including Deland's Victoria Gardens. After August 31, the systems will be available as an upgrade option. Homeowners will be able to track how much power their system is producing, along with its environmental benefits, via a Web-based remote monitoring system.

"Creative business partnerships are helping to transform the American residential marketplace with homes that combine energy efficiency with solar power," said DOE Assistant Secretary for Energy Efficiency and Renewable Energy Alexander A. Karsner.

"These homes will help transform the built environment into healthier, more prosperous and sustainable communities that reduce our carbon footprint, enhance our energy security and contribute to the fabric of a cleaner, more efficient America."

To maintain a consistent and visually appealing look for its high-end resort communities, Shea Homes chose BP Solar's Integra systems. The Integra system offers a low-profile installation, enhancing the look on asphalt shingle roofs.

"We're proud to be Shea Active Lifestyle Communities' exclusive solar provider as they become the first national residential builder to introduce solar across all of their communities," said Mary Shields, global vice president of marketing for BP Solar.

"We are pleased to see that home builders around the country increasingly see the value that solar brings to their homes as well as to their homebuyers."

SunWorks Solar Systems, Inc. will install The BP Solar Home Solutions systems in the Victoria Gardens homes. SunWorks professionals have years of experience in installing roofing and solar fields and are trained by BP Solar on the proper system design and installation processes.

Shea Green Certified homes are built with a combination of the most important and cost-effective standards for green residential building set by LEED, National Association of Home Builders, and Environments for Living.

In addition to solar power systems, standard features in Victoria Gardens green homes include solar attic fans, blown-in insulation from recycled cellulose, wood from sustainable forests, framing techniques that use up to 10 percent less wood and save 5.5 trees per home, leak minimizing construction via sealed ducts and penetrations, satellite/weather-controlled irrigation systems, Energy Star-rated efficient appliances, dual pane low-e windows and motion and occupancy sensor lighting.

Source - Solardaily

Wednesday, 30 July 2008

Eco-friendly green homes save energy

UK households could cut their domestic gas bill by a total of £4.6 billion annually by employing energy saving, eco-friendly measures, a new study suggests.

British Gas claims that its ongoing Green Streets Trial has seen some participating families cut the amount of gas they used by 50 per cent and that other households reduced their total energy use by 30 per cent.

This was achieved by fitting solar panels as well as energy efficient boilers and light bulbs.

Phil Bentley, managing director of British Gas, commented: “For every £3 we spend heating our homes £1 is wasted because of poor insulation.
“And whilst strict standards on new build are needed, most of the energy being consumed is in the ageing homes we live in today.”

Participants in the study were granted a budget of £30,000 per household to spend on energy-efficiency fittings for their homes

Source - London Stock Exchange