Articles - passivehouseplus.ie
Friday, 11 December 2009 00:00

Green building & energy links, Dec 11

Written by

As it says on the tin - if you know of any other interesting stories please do share.

Gormley to set targets for carbon emissions reductions today: Irish Times

UK boiler scrappage scheme to help 125,000 householders upgrade their gas boilers to new, high efficiency models - sounds like a much better idea than a car scrappage scheme to me: Guardian

Cloud computing recommended for energy efficiency: Energy Saving Trust

Green architect Malcolm Wells dies at 83: New York Times

Self destructing bacteria could be key to better biofuels: Inhabitat

UK houses spending more on going green: Guardian (some figures on this here)

Copenhagen climate talks should put big focus on retrofitting existing buildings: ereleases

UK cannot meet carbon reduction targets unless commercial sector embarks on massive retrofit drive: Telegraph

Can windows perform better than walls in energy terms?: Green Building Advisor

Tuesday, 08 December 2009 00:00

Reuse construction waste first, then recycle

Written by

We all know the three Rs of waste, but reducing and recycling often get a lot more attention than reusing. But now a report from the UK's Bioregional Development Group and construction waste reclamation body Salvo has re-iterated that reusing materials offers greater environmental benefits than recycling.

Via Treehugger.com, BioRegional's Jonathan Essex says: "Pushing reuse clearly shows the benefits that reuse brings over recycling. For example, if we reclaimed 50% of reusable iron and steel the carbon savings would be equivalent to taking 29,000 cars off the road - and that's for just two materials. Yes, reclamation is currently more labour intensive than recycling which makes it more expensive, but it creates green jobs and products that often have a higher value than recycled - for instance reclaimed bricks are worth much more than bricks recycled into aggregate."

The report - available here - makes some key recommendations to British policy makers: create a "reuse champion" to direct investment in new capacity and R&D, provide information to the public and work with government to promote reuse; invest in storage and re-processing capacity for reuse of construction products; set targets for the reuse of construction waste and support reuse through planning policy; incentivise reuse and reclamation by adding materials to the EU emissions trading scheme; and direct landfill revenues to reuse before recycling.

Anyone interested in this topic should check out our article Deconstruct Ireland - it's all about designing buildings for disassembly and reuse.

Wednesday, 02 December 2009 00:00

How to convince householders to energy upgrade?

Written by
When I covered the Serve project in North Tipperary for the latest issue of Construct Ireland, one thing struck me: how difficult it is to convince householders to upgrade their homes. Serve is an EU-funded sustainable energy project that is grant-aiding home energy upgrades alongside the Home Energy Saving (HES) scheme in North Tipp - more info on Serve here.

The idea of Serve is to get householders to undertake the basic insulation and heating upgrades under HES -  and then go further with additional measures under Serve. Between HES and Serve homeowners can get up to 70% of the cost of an energy upgrade - but it's still a hard sell.

When I interviewed Paul Kenny from the Tipperary Energy Agency, he said most homeowners were reluctant to upgrade, and that those in houses built post-1990 were particularly disinterested. Many believed their houses to be energy efficient. Of course this generally isn't the case - according to SEI's latest stats, most building energy ratings (BERs) for existing dwellings fall between a C and a G rating.

So how should energy upgrades be sold to householders? If the experience of Serve is anything to go by, even the introduction of Pay As You Save - a scheme that would enable homeowners to energy upgrade their homes and pay for it over time on their bills, spending nothing up front - might not be enough to convince a lot of people.

A first step is to make homeowners aware of the energy performance of their homes. An idea proposed by Construct Ireland, whereby BERs must be displayed on all property advertising, is included in the current programme for government. This would ensure that BERs are prominent in newspapers, on property websites, on street signs and hoardings. It should make us all much more aware of the energy performance of typical Irish homes. After all, if my neighbor is selling her house and I see she has a D, E or F rating, I'm more likely to realise that my own home's performance must be similar and think about upgrading.

But clearly this is just one step towards making people aware of the energy performance of their home and convincing them to renovate. What else can be done to entice homeowners?
Friday, 27 November 2009 00:00

Green building & energy links, Nov 27

Written by

You know how that famous old saying goes - there's nothing quite like some green building and energy links on a Friday afternoon.

How Malmo was transformed from a deteriorating city into a model of sustainability: Treehugger

Ecotricity launches a "green gas" derived from landfill waste - I'd be curious to hear readers' opinions and comments on this: Energy Savings Trust

Storing heat with phase change materials: Green Building Advisor

The Guardian's guide to buying a wood burning stove: Guardian

Norwegian firm tests ground-breaking osmosis power plan: Guardian

Replacing ugly construction site barries with living walls: Inhabitat

Global body needed to direct green technology, says G77: Guardian

Thursday, 26 November 2009 00:00

Government aims to upgrade a million homes

Written by
Meant to post this yesterday but other things got the better of me - the Irish Times yesterday reported on the government's plans for a Pay As You Save type scheme. Pay As You Save is an idea proposed by Construct Ireland that would enable householders to fund energy upgrades by paying for the work on their utility bills over time. The government's proposed scheme is instead termed Save As You Pay - putting the emphasis on the saving rather than the paying.

Harry McGee writes in the Irish Times.
However, the new scheme would vastly accelerate the retro-fitting of the national housing stock, with upwards of 90,000 dwellings a year being retro-fitted over a period of 10 to 12 years.

The funding model would also radically alter in order for change of that magnitude to be achieved. Officials believe that extending the grant scheme would not be feasible or realistic.

Instead, electricity and energy utility companies would be given new obligations to reduce progressively the amount of energy they generate each year.

Their roles would change to allow them to offer retro-fitting services and financing. Homeowners would get an assessment carried out by the utility. After completion, the cost would then form part of the utility bill, to be paid off over a long period of time.

Professor J Owen Lewis, the newly appointed CEO of Sustainable Energy Ireland headline.jpg
The retail and telecoms sectors were the big winners at Sustainable Energy Ireland's sixth annual awards in Dublin last Friday, with Dunnes Stores, Heatons, O2 and Eircom each taking awards at the all-island event.

The awards aim to highlight "excellence in business energy management", and this year included entries from over 100 organisations.

 

During Plan Expo earlier this month I had a chat with Amanda Gallagher and Eanna Nolan from BRE Ireland. Both raised what I thought was a valid point - that so far the drive towards green building in Ireland has focused a lot on energy use and very little on the embodied energy of building materials. After all, if we're to drastically reduce the carbon footprint of buildings, both must be tackled.

Green building standards in other countries aim to do just that: In the UK there's the voluntary Code for Sustainable Homes, which rates homes based on criteria including water efficiency and use of materials as well as energy efficiency. The BRE's own Breeam rating system (which is just taking off in Ireland) for non-domestic buildings examines a similarly wide range of criteria, as does the US Leed system.

Why have we been comparatively slow to focus on materials and other sustainability criteria here? Is it a result of the dominance of a carbon-intensive building industry - traditional concrete - here, or is it down to something else? 

 

 

Thursday, 19 November 2009 00:00

Clinton proposes Pay As You Save type stimulus

Written by

It seems the White House is considering a national weatherization ('energy upgrade' in our language) programme for 2009 that, according to GreenBuildingAdvisor.com, will aim to "demystify weatherization for homeowners, help contractors market a new set of government incentives to weatherize, and create a rush to retrofit".

Two strategies have been proposed for the programme - more details here - but I'm just going to mention the one proposed by Bill Clinton, because it's quite simililar to the Pay As You Save scheme proposed by us at Construct Ireland.

Richard Defendorf writes:

The Clinton plan... would apply to both residential and commercial improvement projects, would reallocate clean-energy money from the stimulus bill that has not yet been spent and would offer building owners a fixed set of climate-appropriate improvements designed specifically for buildings in their region. This plan also includes a financing program that would attach the loan payments to the upgraded property’s tax bill, working in much the same way as the bond-funded Property Assessed Clean Energy program has been working for dozens of municipalities and many states (PACE was adopted this week by the state of New York).

The logic of letting homeowners pay for upgrades over time on their energy bills continues to catch on. 
Wednesday, 18 November 2009 11:47

Engineers urge government to act on climate change

Written by

burning_planet.jpg
Ireland risks social and economic disaster from climate change unless the government takes urgent action, according to the Irish Academy of Engineers.

In a new report the group says delivering critical infrastructure must be prioritised, otherwise the country risks polluted drinking water, extensive flood damage and power blackouts.

Monday, 16 November 2009 00:00

Ten principles of low energy building

Written by
Martin Holladay has posted a very good guide to the basics of low energy building & retrofit on GreenBuildingAdvisor.com. He wisely avoids mentioning too much green "bling" and instead focuses on smart design and a well-insulated, air tight envelope. The basic principles? Don't build too big, orient the house correctly, choose the right windows, design an air-tight layer and insulate well.
Page 120 of 143