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Poznan fails to ignite; Europe proposes integration of cogen

Aside from a commitment to shift into ‘full negotiating mode’ this year, the United Nations Climate Change Conference in Poznan, Poland, ended in mid-December with very little tangible progress on a global climate change deal, to follow the Kyoto Protocol due to expire at the end of 2012.

While government ministers gave support to achieving an ambitious and comprehensive deal in Copenhagen in December 2009 — and parties also agreed that the first draft of a concrete negotiating text would be available at the June UNFCCC gathering in Bonn — Friends of the Earth executive director Andy Atkins flatly stated: ‘The climate talks fizzled out with no progress on the big decisions.’ He added: ‘There’s now a plan to make decisions in 2009 but a radical quickening in pace is urgently required.’

COGEN Europe outlined a European Energy Integration Project (EIP) during the Econcern Sustainable Energy Event in Poznan, in a move designed to explore the challenges from integration of cogeneration into the European energy mix and outline a practical route to the EU target for carbon emissions reduction.

With the findings to be presented in Copenhagen in 2009, the project aims to focus politicians, policy makers and citizens on the practical steps needed to create a sustainable future. Challenging the traditional ideas of where and how to start the cogeneration process, the EIP will use lessons learned from existing cogeneration installations to identify where the real challenges lie.

Building on work carried out in several studies, including work by the International Energy Agency CHP/DH Collaborative, COGEN Europe, the World Alliance for Decentralized Energy (WADE), and others, the EIP will scope the size of the challenge facing two metropolitan areas and identify alternative paths and timescales to reaching target carbon levels. Using knowledge developed through practical experience of managing heat and electricity supply together, the project will identify the range of successful policy tools which create a supportive structure for the integrated supply of energy.

The EIP will ultimately recommend a mix of technical, economic, regulatory and other measures, including behavioural changes, to fulfil the long-term sustainability target for large metropolitan areas in Europe.

The European Renewable Energy Council (EREC) identified a key obstacle in progressing the climate talks. The group noted: ‘Nothing spectacular was expected from the COP 14 in Poznan this year. However, negotiations suffered especially from uncertainty on the EU climate and energy package and from the lack of US position.’

In a related development, a new study from the UK’s Carbon Trust argues that any post-2012 deal should include reform and expansion of global carbon markets, strong targets to create demand for reductions, and specific support for innovation and energy efficiency.

The global carbon markets have succeeded in channelling billions of euros towards low-carbon investments, the report says, backing the mechanisms as a key part of global action. However, reforms are needed and must be matched by stronger international targets, says the Carbon Trust, adding that associated policies on innovation and energy efficiency will still be needed to tackle climate change on a global level.

Professor Michael Grubb, chief economist of the Carbon Trust said: ‘The experience of global carbon mechanisms can give governments confidence to commit to very significant emissions reductions after 2012 but they will need reform.’

EU agrees 20:20:20 climate package

Agreement on the European Union Renewable Energy Directive has paved the way for significant expansion of CHP.

The boost is expected to come as part of the economic bloc’s plans to achieve a 20% cut in greenhouse gas emissions by 2020, part of the so-called 20:20:20 plan. Despite some concessions, most elements of the legislation were approved.

Under the terms of the Directive, each Member State has a legally binding renewables target for 2020 and is required to have drawn up a National Action Plan (NAP) detailing their proposals to achieve their 2020 targets by June 2010. For all countries, 10% of energy used in transport will have to come from renewables by then. This 10% target will now also include other types of sustainable transport.

Member states will report on progress to the Commission every two years. The EU Commission will have full power to monitor these plans and launch infringement procedures against those not implementing the Directive.

From 2013 an emissions cap will be set at EU level and cut each year to reach a 21% cut in 2020.

Philip Wolfe, director general of the UK Renewable Energy Association said: ‘Spending money on boosting renewable heat, electricity and transport fuel production can help lift us out of recession. We’ll be investing this money to reduce our energy costs and protect us against future oil price hikes.’

Commission president José Manuel Barroso said: ‘The EU’s climate and energy package is part of the solution both to the climate crisis and to the current economic and financial crisis. It represents a green ‘new deal’ which will enhance the competitiveness of EU industry in an increasingly carbon-constrained world.’

The move follows the publication of a new EU Energy Security and Solidarity Action Plan by the European Commission, which among other things, sets out a strategy to increase the contribution CHP makes to Europe’s energy supplies.

For the near future, the communication suggests actions to ensure that cogeneration is taken into consideration as an element of the National Energy Efficiency Action Plans. Access to distribution grids for electricity produced from cogeneration should also become easier, the Commission adds.

The Commission plans a thorough evaluation of the 2006 European Action Plan for Energy Efficiency this year.

However, Greenpeace argues that the Commission has downgraded the importance of energy efficiency. Frauke Thies, Greenpeace EU renewables policy campaigner, said: ‘The Commission has yet again missed the chance to take a bold step forward on energy efficiency — the backbone of any secure and sustainable energy supply system. The review of existing efficiency legislation may bring marginal improvements, but the Commission has shieded away from the most obvious and simple solution — to make the EU’s 20% efficiency target binding.’

259 MW of distributed solar planned for US

California-based utility SunEdison together with retail developers Diversified Realty, a Cleveland-based real estate investment trust engaged in the development and management of shopping centres, have announced one of the largest solar distributed generation programmes ever conceived that will feature on-site renewables.

Under the terms of the deal, SunEdison has the rights to deploy solar energy systems at more than 200 shopping centres, covering up to an estimated 30 million square feet (2.8 ha). The potential capacity of the programme is up to 259 MW with the shopping centres located in 24 states and in Puerto Rico.

Once a particular system is operational, developers Diversified will be able to purchase energy from SunEdison. In addition, shopping centre tenants can also opt to purchase the power at rates lower than retail cost.

Waste to district heat in urban Bordeaux

Veolia Environnement is to operate a waste-to-energy plant and heating network for the Bordeaux Urban Community.

Under the terms of the deal, the Hauts de Garonne installation will be operated by Veolia Environnement subsidiaries Soval and Dalkia for 12 years. The contract is expected to realise a cumulative turnover of roughly €180 million for Veolia.

The company will operate the Cenon waste-to-energy plant, which processes 120,000 tonnes of municipal waste per year and produces energy to supply the heating network.

In addition, Veolia will operate the heating network currently supplying the equivalent of 12,000 homes with heating and domestic hot water in the Cenon, Lormont and Floirac municipalities.

Veolia has also committed to significantly improving the service provided to district heating users, with the 17.5 km of the current network entirely renovated together with a switch to low pressure and the creation of new network loops.

Finally, the offer plans for a 5 km extension of the heating network to connect new homes. Optional investments can also be made by the plant to improve energy efficiency, in particular electrical, the company says.

US fast food gets Vegawatt CHP

Massachusetts-based Owl Power Company claims a world first for its installation of a waste vegetable oil-fired on-site CHP, at the Finz Seafood & Grill restaurant.

The so-called ‘Vegawatt’ device utilizes waste vegetable oil from a deep fat fryer to produce 5 kWe and 15,000 BTU of hot water.

The fully automated system uses a four stage cleaning process to treat the waste oil and no chemicals need to be added to the 80 US gallons (about 320 litres) per week fuel requirement.

George Carey, owner of Finz Seafood & Grill in Dedham, Massachusetts, said the ‘system enables me to significantly reduce my energy costs, generate clean energy on-site, and very importantly, reduce the heavy energy footprint of my restaurant.’

Peter Christie, president of the Massachusetts Restaurant Association added: ‘Most restaurants pay to dispose of their used cooking oil. Some owners have begun to receive compensation for this oil, typically $0.10 to $0.25 per gallon. Vegawatt owners will achieve a value of $2.55 per gallon. New green energy incentives and Renewable Energy Certificates (RECs) will increase the payback to the restaurant.’

UK government fails to hit CHP targets

The UK government has failed to reach its own targets for use of CHP, Sustainable Development Commission (SDC) data shows.

While making progress towards meeting most of its sustainability programme, emissions are still not falling fast enough, the SDC concludes in its seventh annual Sustainable Development in Government (SDiG) assessment.

During the 2007—2008 financial year, the government sourced 8.7% of electricity from CHP, comparing well to the 5.8% from the previous year. However, this is still not on track to meet the target of 15% by 2010, the SDC says. Carbon emissions from offices also show an improvement, down 2.3% from the previous year, but again they are still not falling fast enough to meet the 12.5% reduction targeted by 2011—2012.

Rebecca Willis, SDC vice chair, said: ‘It’s great to see departments finally starting to prioritize their sustainability duties and make progress in many areas. However, there’s still a long way to go — and it’s clear that these targets must be the start of an ever more ambitious sustainability programme.’

Carribean waste-to-energy plants

Subsidiaries of Integrated Engineering Limited (KIE) have secured two contracts worth nearly US$120 million each in Guadeloupe and Honduras for the development of waste-to-energy plants.

In Guadeloupe, an overseas region of France, Keppel Seghers Belgium will design and build a new waste-to-energy plant for an environmental services company under the Spanish construction group ACS (Actividades de Construccion y Servicios).

When completed in 2011, the plant will treat up to 130,000 tonnes per year of household, hospital and industrial waste to generate steam and electricity.

The Guadeloupe plant will feature the proprietary Air-Cooled Grate technology, horizontal boiler design, an integrated prism and a dry flue gas cleaning system with catalytic SCR deNOx technology. The civil works for the plant will be managed by ACS subsidiary Urbaser.

In Honduras, Keppel Seghers Argentina will design and build turnkey mechanical and electrical works for the first stage of construction of the Bahia de Tela Waste Water Treatment Plant. Expected to be completed this year, the facility will treat 1650 m3 of waste water per day.

UK’s On-site canal cooling for pharma

Pharmaceuticals giant GlaxoSmithKline (GSK) has developed an on-site cooling system at its global headquarters in west London, using canal water and heat exchange technology.

As well as cutting energy costs, the move is expected to cut the equivalent of 920 tonnes of carbon emissions from GSK’s head office, which stands beside the Grand Union Canal. The system is primarily designed to cool the company’s computer data centre.

GSK spokesman Duncan Learmouth said the development made good business sense, ‘with a five year pay back of more than £100,000 (US$150,000) of annual energy savings.’

GSK House will be cooled using canal water and heat pumps
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With 2200 miles (3500 km) of canals and rivers across the UK under its control, British Waterways — which partnered GSK in the project — estimates that a further 1000 waterside businesses nationwide could also use water-source heat pump technology for heating or cooling. This would result in annual energy savings of £100 million ($150 million) and reductions in carbon dioxide emissions of approximately one million tonnes, the organisation says. Tony Hales, British Waterways’ chairman, commented: ‘A legacy of their industrial past, our waterways pass alongside thousands of waterside organisations seeking greener ways of doing business.’

PV for US wineries

Perpetual Energy Systems, a financier and developer of solar photovoltaic systems, and Foster’s Wine Estates Americas, a subsidiary of Foster’s Group in Australia, have activated four solar installations, including one of the largest solar energy systems hosted by a US winery.

One of the systems that Perpetual has commissioned is at Beringer Vineyards, with a capacity of 1.34 MW. Another 1.15 MW system was installed at Beringer’s sister winery Asti.

These two systems, along with two others with smaller capacities at the Etude and Stags’ Leap Wineries, will generate approximately 3.85 GWh annually.

As the financier, PES retains ownership of the solar panels as well as the renewable energy certificates (RECs) and carbon credits.

Wood-fired cogen units for Ca and BC?

Virtual Media Holdings Inc., which is to change its name to that of the recently acquired subsidiary Biomass Secure Power Inc., has announced plans to develop up to 10 biomass-fired cogen systems across North America by 2015.

Applications are now underway for construction of the first plant in Abbotsford, in Canada’s British Columbia. Completion and start up of this 10 MW CHP plant is expected to be late 2010.

Revenues will be generated from a 20-year contract with BC Hydro under their Standing Offer Program and the sale of heat to nearby greenhouses. A matching 20-year lease has been secured with an un-named greenhouse company. The plant will use wood destroyed by the pine beetle as fuel. A second greenhouse located close by is also interested in purchasing hot water, Biomass Secure Power says.

In addition, the company is also currently developing a project in southern California, although Jim Carroll, Biomass Secure Power’s chief executive officer, said details of the facility will be released once the project is finalized in spring 2009. Management has held a meeting with a stabling company in Southern California which is looking to bring in 2000 race horses. The company intends to use the horse manure and waste paper products as a fuel while opportunities also exist to bring in additional fuel, possibly brush wood.

They will provide a location on their property to build the plant while hot water will be used heat and cool a hotel on the site. The electricity produced will be sold directly to them and excess power will be sold into the grid.

Biomass Secure Power is also assessing the possibility of building a power plant and perhaps a pellet mill to supply fuel for future power plants in British Columbia.

Petro plant cogen deal for GE 6F in Spain

Spanish petrochemicals major Compañia Española de Petróleos SA (CEPSA) is to use GE’s F-class gas turbine technology for the extension of a cogen plant located at the La Rábida refinery in Huelva.

Plans are for GE Energy to supply a gas-fired Frame 6FA gas turbine generator, equipped with a dry low NOx (DLN) 2.6 combustion system. The contract also includes technical advisory services during the erection and commissioning of the gas turbine at the site.

The exhaust of the turbine allows generation of a large quantity of steam at high pressure to meet the site’s industrial needs, while the electricity production will be used to feed the plant auxiliaries. Any excess power is to be sold to the Spanish grid.

In total, a 6FA generates about 75 MWe with excess steam going to a Thermodyn steam turbine, which is provided under a separate contract by GE Oil & Gas. That machine would produce 9 MW of extra power for the site.

This is the first time CEPSA will use GE’s F-class gas turbine technology in one of its refineries, and the expanded plant is expected to enter commercial operations during the first quarter of 2010.

Two CHP plants for Scotland planned

Drinks company Diageo, which produces spirits such as Johnnie Walker, Tanqueray and Smirnoff, is to develop a biomass-fired on-site energy facility at a new distillery in Roseisle, on Speyside, Scotland.

The plant is designed to utilize the distillation co-products of spent grains (draff) — malted barley residue after sugar extraction — and pot ale — distillation residues containing yeast, protein and water, to supply heat to the plant.

To be designed, built and operated by Dalkia, the bioenergy facility at Roseisle Distillery will use a moving grate biomass boiler and a biogas boiler to combust both biogas and solid wastes to produce around 5 MW.

Initially the spent grains are treated by separating solids and liquid with a belt press, before the liquid portion goes to an anaerobic digester to produce biogas. The pot ale solids are separated using a decanter centrifuge with, again, the resultant liquid being sent to the anaerobic digester. Liquid from the digester plant is further processed to provide water to the adjacent maltings plant. The solids from the press and decanter are combusted together with dry residues from the adjacent Maltings operation, generating steam at 11 bar. All of the steam produced is used on-site in the distillery.

The £40 million (US$60 million) distillery, due for completion this spring, will produce up to 10 million litres of whisky a year from its 14 six-metre high copper stills.

The development follows the August 2008 announcement of plans by Diageo for a similar bioenergy CHP installation at Scotland’s largest distillery, Cameronbridge in Fife.

Producing around 6 MWe and some 25 MWth, the system treats the spent wash by separating solids with a belt press, before the liquid portion goes to an anaerobic digester. In this case the treated digester water is expected to provide around 30% of the distillery’s needs.

Steam from the bubbling fluidized bed boiler passes to a two-stage steam turbine, with some of the steam from the first stage supplying the distillery with process steam at 16 bar. The remainder goes on to the second stage of the turbine.

Again the plant is to be designed, built and operated by Dalkia. The anaerobic digester will be supplied by Paques BV, the water treatment plant will come from Veolia Water Solutions, and the bubbling fluidized bed boiler will be supplied by Enmas. The steam turbine will be supplied by Dresser Rand.

Costing approximately £65 million ($97 million), the project, which will also use spent wash as fuel, is set to reduce annual CO2 emissions at the site by approximately 56,000 tonnes, and will provide around 98% of the thermal and 80% of electrical power used.

Dalkia will construct this facility over the next two years. Once completed the facility will then by transferred to Diageo under a finance-lease arrangement, while continuing to be managed by Dalkia.

Argentinian mine uses on-site power

Wärtsilä has been awarded an operations and maintenance (O&M) for an on-site power project that it is currently supplying equipment and engineering for at a mine in Argentina.

Under the terms of the five-year O&M contract, Wärtsilä will operate and maintain the 15 MW power plant. Installed for the Mina Pirquitas mining project in the province of Jujuy, in the north of Argentina, the plant is located at an altitude of 4500 metres. The new base-load power plant will provide electricity for the mining activities. The delivery includes three natural gas-fired Wärtsilä 18V34SG engines.

Biogas CHP plant from Germany’s Epuron

A biogas CHP plant with a capacity of 537 kW is to be developed by Epuron GmbH for the energy service provider MVV Energiedienstleistungen. The Oehna plant will be constructed at the start of next year in the southern part of Brandenburg, Germany, and from June 2009 will generate heat and power from corn silage, liquid pig manure and solid cow dung. The plant will be used to ferment some 5600 tonnes of corn silage, 6000 tonnes of liquid pig manure and 8000 tonnes of cow dung per year. The substrates are guaranteed over the entire term of 20 years by the co-operation partner Oehnaland Agrargesellschaft mbH.

At the same time, Oehnaland will also be seeing to the technical operational management of the plant. The electricity is to be fed into the grid while the heat generated during the process will be used by the adjacent industrial premises of the Oehnaland Agrargesellschaft agricultural society for heating its stables.

Epuron was responsible for the project planning and financing and the plant is to be constructed by the company BioConstruct from Melle. It is the third such biogas plant that Epuron has sold to the subsidiary of MVV Energie.

Moritz Böcking, head of project development for bio-energy at Epuron comments: ‘In particular, the improvements in general conditions for biogas plants on account of the amended Renewable Energies Act will add to the interest in this technology.’

From 2009, the amended Renewable Energies Act (EEG) will make biogas projects up to 2 MW particularly profitable, Epuron says.

Utah in On-site energy storage play

Energetix Group plc subsidiary Energetix Pnu Power Limited has received an order to supply 20 kW of compressed air energy storage systems to P&E Automation Inc., for a manufacturing site in Utah, USA.

The move is part of a plan to integrate energy storage with renewable generation, including wind turbines, heat recovery systems, small hydro, and solar power, in a bid to shave peak demand.

This two-phase order is worth up to US$380,000, with the first system planned to be installed in the second quarter of 2009. Further systems are due to be installed in 2009 and 2010.

The project is backed with grant funding from the National Energy Technologies Laboratory, part of the United States Department of Energy (US DOE).

A fifth from US CHP?

Oak Ridge National Laboratory (ORNL) has released a new report which points to CHP enhancing energy efficiency, economic growth and energy infrastructure.

The document: ‘Combined Heat and Power: Effective Energy Solutions for a Sustainable Future’ attempts to answer the question: ‘What if 20% of generating capacity came from CHP?’ According to the report, if the United States attained this goal by 2030, benefits would include:

  • A 60% cut in projected increases in CO2 emissions by 2030
  • Fuel savings of 5.3 quadrillion British thermal units (BTU) annually, the equivalent of nearly half the total energy currently consumed by US households
  • Economically viable application in industrial facilities, commercial buildings, multi- and single-family housing, institutional facilities and college campuses
  • The creation of one million new highly-skilled jobs through 2030 and US$234 billion in new investments throughout the United States.

The report is a joint effort between the Department of Energy’s Industrial Technologies Program (ITP) and ORNL and involved input and review by a range of industry, association, and non-governmental stakeholders. The full report may be viewed at:

Wood-fired CHP for UK pellet plant

Italian company Turboden Srl is to supply an Organic Rankine Cycle (ORC) turbine for a new wood pellet manufacturing plant being developed in the UK by LandEnergy.

The machine will be used in a wood-fired CHP plant designed by Gammel Engineering to supply energy to one of LandEnergy’s wood pellet production factories.

The facility will supply some 9 MWth and 2 MWe to the plant, which is expected to produce around 55,000 tonnes of pellets annually. Most of the power will be used on-site, though the facility will deliver excess electrical capacity to the grid.

Forestry residues and arboricultural arisings will be used as feedstock for the boiler, which will heat a special thermal oil instead of water vapour. According to Turboden, the use of the organic fluid offers superior electrical performance and several mechanical advantages, including slower rotation of the turbine at about 3000 rpm, lower pressure and no erosion of the metallic parts and blades. The unit is expected to be on-line in around 12 months.

LandEnergy says it has plans for the development of additional CHP plants in the UK, depending on market conditions and heat demand, and is particularly keen to expand use of forestry residues in such applications.

‘We believe that an increase in the number of ORC applications in distributed energy could play a significant role in the reduction of greenhouse gas generation by promoting greater industrial use of renewable energies,’ says Mario Gaia, Turboden founder.

E.ON in European micro-CHP push

A subsidiary of Energetix Group plc has signed a collaboration deal with E.ON Engineering Limited and a major, un-named, European appliance manufacturer with the aim of potentially producing mass-market micro-CHP units.

The so-called Genlec modules and complete Genlec-enabled micro-CHP appliances will be used for Germany-based E.ON and the European domestic heating market, with the move following work to develop the Genlec micro-CHP unit for UK homes.

Through a four-phase programme, including building prototypes, evaluation and field trials, the parties plan to determine the most appropriate technical and commercial way to enable E.ON to deliver Genlec-enabled heating products to their customers.

Asian rig getting DResser on-site power

Dresser-Rand Group Inc. is to supply on-site power equipment for the P-55 semi-submersible production platform in a deal worth approximately US$100 million.

The contract from Petrobras Netherlands B.V. to supply power generation packages and services includes a $78 million supply contract for four gas turbine driven power generation units using Dresser-Rand’s modular VECTRA 40G power turbines and a services contract of up to $22 million.

P-55 will be a semi-submersible platform with a production capacity of 180 thousand barrels per day of oil. It will be installed in a water depth of 1795 metres at the Roncador field in the Campos Basin and is scheduled to begin operations in early 2012.

London pushes CHP

Proposed investments of £72 million (US$108 million) over four years have been unveiled by the London Development Agency (LDA) as part of a targeted 60% reduction in carbon dioxide emissions from the city by 2025.

A major plank of the proposals is a focus on decentralized energy, waste and energy efficiency in existing buildings — areas the Agency identifies as offering the best return on investment. Decentralized energy schemes are also expected to result in major reductions in carbon emissions through the development of local CHP and district heating networks.

The LDA says it has already identified a pipeline of district heating projects designed to save 110,000 tonnes of CO2 annually. Over its four-year lifetime the programme is expected to deliver cuts of 1.5 million tonnes per annum.

Remote on-site power from fuel cell

Two methanol fuel cells are to be supplied to npower renewables to supply primary power in a portable wind monitoring application for use in remote, off-grid sites in the UK.

Due for completion now, npower will use the new anemometry system to measure wind speed and direction at the full range of possible wind turbine heights.

Continuous power to the equipment is provided by two 12 V gelled-electrolyte batteries which are constantly re-charged through a hybrid system comprising solar PV and two fuel cell modules.

UPS Systems supplied the batteries, EFOY Pro 1600 methanol fuel cells and methanol fuel for the project, which are all integrated within a secure, weatherproof ProCube casing, and monitored by the company’s proprietary remote monitoring system. In this application, the units are supplied with a single 28 litre canister of methanol to power the system for over a month.

Stewart Kirby, anemometry analyst at npower renewables commented: ‘We chose to integrate fuel cells into the project because of their flexibility which allow the whole remote monitoring and power system to be portable. We need to be able to move the wind monitoring equipment quickly and easily between locations and the fuel cells allow us to do this.’

MW-scale micro-turbine for Spain

Angles Textil S.A. (Antex), an independent Spanish textile group is to install the first MW-scale micro-turbine unit from Capstone Turbine Corporation. Capstone’s first C1000 product will run on Liquid Natural Gas (LNG) and is to be installed at one of Antex’ eight industrial plants in Spain.

Previously the company, whose activity centres on the broad world of synthetic yarns, had installed a cogeneration system using a reciprocating engine running on heavy fuel.

The project was developed by DISTEC, a company based in Girona, Spain.

The moves comes as Capstone signs a new distributor agreement with Sobono Energy Private Limited for CHP and resource recovery applications in Singapore, Malaysia, Philippines, Thailand, Indonesia, Vietnam, Guam and Saipan.

Cummins in China genset manufacture

Cummins Power Generation Inc, has recently started construction of a diesel genset plant in Wuhan, in Central China’s Hubei province.

With a total investment of US$19 million, this new plant — with 12,000 m2 of construction area — will have an annual capacity of 6000 diesel generator sets and 30000 G-Drive engines when it starts operation in July 2009.

By 2013 the plant is expected to generate annual sales revenue of $170 million. Diesels and related products will be made here both for domestic and export markets.

Scottish Water in AD CHP move

Scottish Water Waste Services has signed a contract for the design and construction of an anaerobic digestion plant at their Deerdykes facility, outside Cumbernauld, in Scotland.

Gas generated by the facility will be used in reciprocating engines to supply electricity to the grid and heat used on-site and potentially in neighbouring industrial estates. A local company has a heat demand with a good match to the planned facility’s output and currently Scottish Water is examining the feasibility of making a connection to the heat network, with confirmation on the decision due in June.

Processing some 30,000 tonnes of food waste annually, material from the digester will be supplied by the local authority under its Landfill Directive obligations, together with waste from local food retailers and producers.

The CHP facility will comprise two gas engines and associated heat recovery systems, the supplier of which has not yet been determined. The engines are rated 500 kWe each and collectively are expected to supply 1.1 MWth. Total electrical output is expected to be some 6 GWh annually while the heat will be used in the digestion process, including a requirement to pasteurize the material at 70oC.

Planning permission for the site, a redundant sewage works, has been awarded and application for a grid connection permit is underway. Construction is anticipated to begin in April and operations are due to commence in April 2010. HBS Construction Ltd and Monsal Ltd are to design and build the plant.

In addition, two similar developments are under consideration, one at a redundant sewage works west of Glasgow, now a green waste composting site, and another in south west Scotland at a redundant Scottish Water depot with good proximity to waste sources as well as a large local heat demand.

Scottish Water has been composting on the Deerdykes site since 2004 and currently processes some 42,000 tonnes of green waste annually there, employing existing tunnel structures to compost the material. The company is also examining the possibility of using heat generated by the composting process to supply offices.

New CCGT for Latvian District Heat

Iberdrola Ingeniería has completed the turnkey construction of a 240 MW gas-fired combined cycle CHP plant in Riga, Latvia.

By using residual heat, the plant will provide heating and hot water to the southern part of the city of Riga, with a population of over 700,000.

The plant, owned by Latvian utility Latvenergo, will be operated and maintained by Iberdrola Generación for a period of 12 years. Carried out by the Iberdrola Operación y Mantenimiento, S.A., marking the first plant of this type developed by the group subsidiary for third parties abroad, the station will be connected to the remote monitoring, diagnosis and simulation centre — set up in 2002 to control the operation of all the company’s combined cycle facilities.

The plant is able to supply a fifth of the country’s electricity needs and reduce its energy dependence by some 30%, Iberdrola says, adding that electricity efficiency of the station is over 57%, and its total efficiency is over 85%.

Worth some €300 million, the contract for the development was awarded two years ago. It was built on the site of an existing thermal plant (TEC-2) commissioned during the 1970s.

Canadian cogen start up

Commercial operations have commenced at Fort Chicago Power’s new cogeneration facility in London, Ontario, Canada.

Constructed on a site adjacent to Fort Chicago Power’s existing London District Energy System facilities, Fort Chicago Energy Partners L.P. has entered into a 20-year contract with the Ontario Power Authority (OPA) covering the development, operation and sale of electricity from the plant. Meanwhile, the London District Energy System will utilize all of the steam output to provide space heating and cooling to commercial, governmental and residential buildings.

The natural gas-fired cogeneration has a capacity of 17 MWe, and approximately 52 MWth.

John O’Rourke, vice president, Fort Chicago Power commented: ‘This facility will add to the revenues of Fort Chicago Power through sales of electricity and will allow expansion of our existing district energy system for the benefit of businesses and other customers in London.’

Rolls Royce Trent 60 to power New Caledonia nickel mine

Two Rolls-Royce Trent 60 generating sets are to provide on-site power for a new nickel mine in the North Province of New Caledonia in the South Pacific.

The Wet Low Emissions (WLE) dual fuel gas turbine units will each provide up to 46 MWe to supplement two existing 135 MW steam turbine sets.

Koniambo Nickel SAS, a joint venture owned by Xstrata Nickel and Société Minière du Sud Pacifique (SMSP), is developing the $3.8 billion Koniambo open cast mine that will be capable of producing 60,000 tonnes of ferronickel a year after the first ore is processed, expected in the first half of 2011.

The Trents are expected to provide power for the next 25 years.

Delivery of both units is scheduled for the third quarter of 2009, with the first electricity being produced during the third quarter of 2010.

Recycled wind turbine for on-site hydrogen

The UK’s first building to be fuelled by hydrogen supplied by renewables has installed a recycled wind turbine on-site.

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Commissioned by regional development agency, Yorkshire Forward, the secondhand wind turbine was transported from Newton Aycliffe, County Durham, to its new home at the Environmental Energy Technology Centre, EETC Building in Rotherham in Yorkshire.

The turbine is a Vestas V29, rated at 225 kW, and will be used for the on-site production of hydrogen using a high pressure alkaline electrolyser developed by project partners the Pure Energy Centre.

Hydrogen is first due to be produced at the site in January 2009.

Biomass gasification for Japanese power plant

A Japanese power plant is using biomass updraft gasification technology to deliver 2 MW of CHP capacity.

Located 400 km north of Tokyo, the plant uses technology licensed from Denmark-based Babcock & Wilcox Vølund A/S, a subsidiary of Babcock & Wilcox, to turn 60 tonnes of woodchips a day into wood gas. The output from the plant is delivered residents of the nearby town of Murayama, in Yamagata Prefecture.

JFE Environmental Solutions Corp., the plant’s designer, licensed the technology from B&W Vølund in 2003.

In the updraft gasification process, moist biomass fuel is fed into the top and descends though hot gases rising through the reactor. The fuel is dried in the gasifier’s upper zone while pyrolysis occurs below. The biomass material then passes through a reduction zone (gasification), and in the zone above the grate an oxidation process is carried out (combustion). To supply air for the combustion process and steam for the gasification process, moist hot air is supplied at the bottom of the reactor. Updraft technology allows for a wide fuel mix and range of moisture content and is also scalable for units up to 20 MW fuel input.