Member’s Papers
Pumped Storage Planning – 1970s VS 2020
Pumped Storage Planning, 1970s vs 2020 By Dr Alastair Barnett Webinar 21 Oct 2020 Until the recent flurry of publicity about the Lake Onslow proposal, pumped hydropower storage had not been seriously considered in New Zealand since the 1970s. At that time the Tekapo canal was under construction to link the two main storage reservoirs (Lakes Tekapo and Pukaki) in the Upper Waitaki power development, and an obvious option was to design the canal to take pumped flow from Pukaki to Tekapo as well as gravity flow from Tekapo to Pukaki. The canal design was duly analysed, constructed and tested to have the required reverse flow capacity. Instead, the newly developed Maui gas field was utilised and the Huntly thermal power station continues in use, and the importation of coal means that our thermal emissions have actually increased. The disastrous outcomes of poor power planning have now been recognised, but the reaction seems to be one of panic, adopting the first scheme to come to mind while ignoring the alternatives, especially the final 10% of the Tekapo-Pukaki scheme.
Read MoreDesign For Additive Manufacturing
Prof Olaf Diegel of the University of Auckland, spoke to a webinar arranged by Engineers for Social Responsibility on 16 September 2020. Additibve manufacturing is popularly know as 3D printing and has been eagerly seized on by many computer users as an additional and interesting adjunct to their work.
Read MoreWhat Is Wrong With The New Zealand Electricity Market?
Dr Geoff Bertram spoke to an online meeting of Engineers for Social Responsibility on 19 August 2020. He reviewed the electricity reforms since 1986 and their effects, particularly on pricing, excess profits and anti-competitive practices. He noted the effects particularly on increasing poverty and inequality, specially child poverty and energy poverty. He suggested steps that could be taken to deal with these problems, but noted that invested interests would make implementation of any of them, very difficult to achieve.
Read MoreThe Kiwi Bottle Drive – New Zealand’s Grass Roots Campaign For The Re-Introduction of Bottle Deposits
A Container Deposit Scheme (CDS) would recycle an extra 750 million beverage containers each year, create over 2,000 new jobs and reduce the impact of plastic on our oceans. Yet the packaging industry continues to undermine the public’s desire and the political will for change. What can we do to ensure New Zealand catches up with other countries that are leading the way on reducing single-use packaging and the harm it causes?
Read MoreWonky Carbon Accounting Hides NZ’s Feeble Paris Commitment
New Zealand’s commitment under the Paris Agreement, as stated in our Intended Nationally Determined Contribution (INDC) (1), which became our Nationally Determined Contribution (NDC) after we ratified the agreement in October 2016 (2), reads as follows:
Emissions will be reduced to 30% below 2005 levels by 2030. The 2005 reference has been chosen for ease of comparability with other countries. This responsibility target corresponds to a reduction of 11% from 1990 levels.
At face value, the above statement appears clear and understandable, but it is actually quite unclear because there are two accepted measures for emissions: gross or total emissions; and net emissions which are total emissions less deductions allowed for land use, land-use change and forestry (LULUCF), which in our case relate mainly to carbon dioxide taken out of the atmosphere by trees. Neither the New Zealand INDC, nor the supplementary NDC documentation, state clearly whether we are using gross emissions, net emissions, a mix of these, or some other measure to define our Paris target.
Energy VS Climate – Defining The Problem
Steve Goldthorpe, Convener of The Sustainable Energy Forum Inc, spoke to the Auckland Branch of Engineers for Sustainability on 15 August. He pays particular attention to methane emissions, particularly those arising from fracking.
Read MoreFronting Up To Our Deteriorating World
A little group of us down in Otago were worried that we always seem to be fighting rear guard actions. We wanted to propose something a bit more proactive and searching. The result is this attached political appeal for people to use at candidates’ meetings etc pre-election. It is being developed further with the intention of using it as the basis for a petition to parliament.
Read MoreTaming The Debt Monster
Financial markets around the world are trying to adjust to the momentous stresses evident in the US and Europe. In NZ, economic forecasts don’t look particularly good. Debt and interest payments will increase as a result of more borrowing, but the borrowing will allow economic growth and that is what we all want, isn’t it?
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