This site uses cookies. By continuing to use this site you agree to our use of cookies. To find out more, see our Privacy and Cookies policy.
Skip to the content

[IOP] A community website from IOP Publishing

Tag Archives: biogas

Energy transitions in the UK

By Dave Elliott

The UK energy transition is progressing quite well on the electricity side, despite on-shore wind being constrained, but less progress has been made on green heat. A new Energy Research Partnership report on decarbonising heat, Transition to low-carbon heat’, looks at the technical, social, financial and governance aspects and highlights the key actions that need to be taken now and in the next few years. ERP says that ‘supplying natural gas or oil directly into homes will need to be replaced by a decarbonised gas or by electric heating or heat network. But it is not a simple choice: each option has challenges that could limit their deployment. A combination of options is likely to be required; no one option may not dominate, as natural gas currently does. Demand reduction will be an essential part of a cost-effective transition’.

(more…)

Posted in Renew your energy | Tagged , , , , , , , | Leave a comment | Permalink
View all posts by this author  | View this author's profile

Electric vehicles – will they break the system?

By Dave Elliott

Much has been said recently about electric vehicles (EVs) – they are on the way in large numbers, we are told. The Carbon Tracker/Grantham Institute report (see my earlier post) says that, by 2050, EVs will account for over two-thirds of the road transport market globally. That could change the transport system dramatically, although that alone won’t stop congestion. Unless we also move to autonomous cars and taxis, which should use road capacity more efficiently, we will just have queues of EVs – and continued pressure for more road building. But it could change the energy system. Not just in terms of replacing fossil fuels, but also in terms of changing and challenging the emergent non-fossil energy supply system.

(more…)

Posted in Renew your energy | Tagged , | Leave a comment | Permalink
View all posts by this author  | View this author's profile

Greening road transport

By Dave Elliott

Road transport is responsible for around 15% of global carbon emissions. Can this be cut? The first question to ask is – do we want to have private and commercial vehicles on roads as at present? Buses, trams, trains, bikes and walking may be better for many journeys. But assuming we still need private and commercial road vehicles for at least some purposes, the most direct and least disruptive way to reduce greenhouse gas emissions is to switch to lower carbon fuels, biofuels and synfuels. That’s easier than switching to electric vehicles (EVs). However, there are limits to biofuels – EVs are likely to win out.

(more…)

Posted in Renew your energy | Tagged , , | Leave a comment | Permalink
View all posts by this author  | View this author's profile

Bioenergy: new blooms, but also prunings

By Dave Elliott

In an opinion survey by YouGov for the Energy Technologies Institute, 80% of respondents supported an increase in bioenergy use in the UK. Around 74% supported producing bioenergy from biomass and 81% backed producing biomass from waste, comparable to levels of support seen for other renewables. However, some environmental groups strongly oppose some types of biomass use and there is a sometimes rather heated debate underway, as this extended post explores.

(more…)

Posted in Renew your energy | Tagged , , , , | Leave a comment | Permalink
View all posts by this author  | View this author's profile

Green heat in the UK

by Dave Elliott

‘Heat is very difficult to decarbonise and no consensus is yet reached on the mix needed for the long term and you will have seen that from the various different reports on the subject.’  So said the then UK Minister of State for Energy, Baroness Neville-Rolfe, at the Heat Summit last December, with the next phase of the Renewable Heat Incentive (RHI) central to the agenda. There certainly are some competing options, including community-wide heat networks, green gas supply networks, biomass and solar home heating and domestic heat pumps powered by electricity.

(more…)

Posted in Renew your energy | Tagged , , , , , , , , , , , | Leave a comment | Permalink
View all posts by this author  | View this author's profile

Labour’s green gas push

By Dave Elliott

‘Turning certain rubbish materials and farm and food waste into various types of biogas – ‘green gas’ – holds the potential to cut costs, radically reduce pollution, and decrease our reliance on imports. Crucially, using more green gas could make a real impact on the decarbonisation of heat without the need to overhaul our national gas pipeline and heat delivery infrastructure and without significant technical barriers’. So say Labour MPs Lisa Nandy and Caroline Flint in the Green Gas book published by the Parliamentary Labour Party Energy and Climate Change Committee.

(more…)

Posted in Renew your energy | Tagged , , , | Leave a comment | Permalink
View all posts by this author  | View this author's profile

Green heat and energy saving

By Dave Elliott

Heat supply is one of the key weak links in the UK government’s attempt to meet the EU-imposed 15% by 2020 renewable energy target. That target still applies – until the UK finally leaves the EU, if it ever does fully. Although there is talk of green heat networks, for the moment the focus is mostly on direct green heat supply for business and private consumers, and there are some changes underway. The UK’s Renewable Heat Incentive (RHI) has escaped cuts so far. Indeed it is set to expand, but the government wants to restructure it to keep energy costs down for consumers and get better value for money. So, concerned also about impact on food growing, it wants to support the use of food and farm waste-based biomass feedstock rather than crop-based feedstocks for biogas production in Anaerobic Digestion (AD) plants. It has also proposed cutting support for solar heating since it is not seen as good value for taxpayer support.

(more…)

Posted in Renew your energy | Tagged , , , , | Leave a comment | Permalink
View all posts by this author  | View this author's profile

BREXIT impacts and implications

By Dave Elliott

The overall context for UK energy policy and the prospects for renewables have taken something of a hit following the narrow referendum vote to leave the EU, with the climate for new investment looking uncertain. In what may become a familiar pattern, leading German engineering company Siemens has put new wind power investment plans in the UK on hold, and more may follow if the economy continues to falter. It certainly looks grim: www.theguardian.com/environment/2016/jun/28/leave-vote-makes-uks-transition-to-clean-energy-harder-say-experts  and http://uk.reuters.com/article/uk-britain-eu-renewables-idUKKCN0ZH4CZ

(more…)

Posted in Renew your energy | Tagged , , , , , | 2 Comments | Permalink
View all posts by this author  | View this author's profile

ETI on energy saving in buildings

By Dave Elliott

The UK Energy Technologies Institute’s report by Jeff Douglas on Decarbonising Heat for UK Homes notes that ~20% of CO2 emissions are from domestic heating, but says insulation/upgrades won’t cut that enough: ‘the scope for cost effectively reducing the energy demand of existing buildings to the great extent required to meet emissions targets is limited as comprehensive insulation and improvement measures are expensive and intrusive. A several hundred billion pound investment in demand reduction for the entire building stock might deliver less than half of the emissions abatement needed. The most cost effective solutions therefore involve the decarbonisation of the energy supply combined with efficiency improvements that are selectively rather than universally applied, as part of a composite package’.

(more…)

Posted in Renew your energy | Tagged , , , , , , , , , , | Leave a comment | Permalink
View all posts by this author  | View this author's profile

The RHI to be ‘reformed and refocused’

By Dave Elliott

The UK’s Renewable Heat Incentive (RHI) was introduced to support households, businesses, public bodies and charities in moving from conventional forms of heating to renewable, low carbon sources of heat. It has escaped cuts so far, indeed it is set to expand, but the government wants to restructure it to keep energy costs down for consumers and get better value for money. It expects spending on the RHI to rise from £430m in 2015/16 to £1.15bn in 2020/21, but says it wants to promote wider access and make project more affordable, ‘by firmly controlling costs’.

(more…)

Posted in Renew your energy | Tagged , , , , , | Leave a comment | Permalink
View all posts by this author  | View this author's profile