Sustainable Energy NZ #2 – How much dam energy is there anyway?!

Welcome to the second post in the Sustainable Energy without the Hot Air – A New Zealand Perspective series. Today we’ll be crunching the numbers on hydroelectricity potential in New Zealand. For the background to the work and an explanation of the methodology, please visit our last post here. Remember that we are looking for around 55 kWh/d/p from renewable sources to replace what we currently use today. So, with that, today’s post!:

At the moment, ~15kWh/d/p of New Zealand’s energy comes from hydroelectric generation. How much more is feasible? For the United Kingdom, MacKay simply does back-of-the-envelope calculations, but because of widespread hydro-electrical use in New Zealand, there are reports that allow us to make a more complete assessment of hydroelectric potential. [8k8vf25] and [9nvw27h]. Firstly, I discount any scheme that would be in a National park, or protected by a strong Water Conservation Order (e.g. Motu), or extremely remote. Some 34 schemes of >20MW capacity have already been identified as economically and technically feasible (e.g. Mokihinui River). These deliver a potential of 10kWh/d/p. on top of the 15.4kWh/d/p already commissioned. 26% of that is from North Bank Tunnel project in the Lower Waitaki and a further 22% comes from four possible schemes on the Clutha River.

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Agriculture: National’s double whammy on the environment

Here’s the first in a series of NZ election special articles from Hot Topic’s contributors. More pithy comment to follow… Last week I was open-mouthed when I heard the National Party release its environment and climate policy pretty much in the same breath as  releasing the agriculture policy (same province, same day). I can’t figure out how they thought these two things went together — well, in a good way anyway.

Climate change: no mention of the importance of the issue, the alarming reports coming from the scientists.  A lot of blather about keeping up (or perhaps “down” would be a more appropriate term) with other countries. Slowing down the ETS. Never mind that our actions are among the smallest in the industrialised world (see the Climate Action Tracker’s assessment here — rated “inadequate”).

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Water, water everywhere…

New Zealand’s response to the water crisis in Tuvalu and Tokelau is making headlines. Foreign Minister McCully announced yesterday:

Tuvalu has declared a state of emergency relating to water shortages in the capital, Funafuti, and a number of outer islands. A New Zealand Defence Force C-130 left this morning to take supplies and personnel to Tuvalu. The supplies include two desalination units as well as water containers. Two Ministry of Foreign Affairs staff on board, including our Wellington-based High Commissioner, will remain in Tuvalu to help assess needs on the ground. New Zealand will be working with partners and other donors to consider the best medium-to-long-term response options.

Tuvalu, with 11,000 inhabitants, is not the only island nation in trouble. Tokelau, with 1400 inhabitants, has declared a state of emergency because fresh water supplies might run out in a few days. Samoa is rationing water also.

There appears to be a reasonable probability that there is a causal link between the drought and water scarcity affecting the islands and climate change.

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Peruvian glacier melt challenges US security

The melting glaciers of Peru have figured in previous Hot Topic posts such as the review of Mark Carey’s book In the Shadow of Melting Glacier and the report from Guardian journalist John Vidal’s Oxfam-sponsored Andean tour. I was therefore interested to come across an article on what the loss of the Peruvian glaciers implies for US national security. Not that the national security of America normally figures on my list of concerns about what climate change is doing to Peru, but I’m happy to add it if it is required to awaken more widespread US awareness of the realities of climate change. The fact that a version of the article appeared in last weekend’s Washington Post was testimony to that potential. US national security concern might also represent Peru’s best chance of getting much-needed assistance in the enormous adaptation measures facing them.

 

Heather Somerville, the article’s author, is a member of a team of graduate journalist students from Medill School of Journalism who have been investigating the effects of climate change on US national security in various parts of the world.

Said a former CIA Director:

“Think what it would be like if the Andes glaciers were gone and we had millions and millions of hungry and thirsty Southern neighbours. It would not be an easy thing to deal with.”

Somerville summarises the effects already under way in Peru:

“…glacier melt has begun to deplete crops, displace communities, cause widespread drinking water shortages, destabilize hydroelectric power, diminish trade and affect transportation and tourism. The trend is expected to cause regional conflict, economic crises, increased crime, broken infrastructure and food insecurity.”

Without substantial foreign assistance within the next five years the climate change advisor at Peru’s Ministry of Foreign Affairs sees the shrinking of the glaciers leading to a social and economic disaster.

If the US does offer assistance it is likely to be bound up with strategic questions.

“[The Obama administration] must decide whether to send money, development assistance and possibly even military help south to an important democratic ally on a continent where Chinese and Iranian influence is growing, and anti-U.S. sentiment permeates certain regimes.

“Other U.S. allies vulnerable to the impacts of climate change will be paying close attention to how the U.S. responds. Peru’s crisis could set a precedent for how the U.S. uses diplomacy, foreign aid and the military to address the climate change threats around the world.”

The State Department is taking an active interest in the impacts of climate change on the region, acknowledging it as a significant threat which the US must come to terms with in respect to the security challenges it poses. Some assistance has been forthcoming from Washington but the article reports frustration from Peruvian officials with what they see as poor coordination among US agencies, US disregard for the importance of global cooperation and an agenda that fails to address the urgent need in Peru.

Somerville makes it clear that the need is urgent. And it is by no means limited to the areas adjacent to the glaciers, serious though it is for them.

“Life on Peru’s coast depends on water from the Andes. Most of its agriculture production is on the arid coast, fed by water from the Andes. Glacier-fed rivers also support the nation’s largest hydroelectric plants, which provide 60 percent of the country’s electricity.

“Lima, the world’s second largest desert city, is almost totally dependent on Andean rivers fed by glacier melt. Water shortages are widespread there, and even worse in communities nearby that can’t compete with the capital for meagre water supplies.”

The Pentagon’s Southern Command (SouthCom), responsible for Latin America, has also been looking at the security aspects of climate change in Peru.  Their environmental security expert comments that there is some way to go to get a complete buy-in from the Department of Defense that this is a core military role, but Somerville comments that SouthCom probably won’t have a choice but to start planning for climate change. One of SouthCom’s primary missions is humanitarian aid and it has a history of being called on for disaster response in Latin America.

Not that Peru is sitting helplessly waiting for outside assistance. Somerville reports that it created a national strategy on climate change in 2003 and in 2008 set up a Ministry of Environment with oversight of climate change programmes. Work is being undertaken in conjunction with the US Agency for International Development and non-profit organisations to build water reservoirs in Andean communities and monitor water flow from the glaciers.

But resources are lacking, and the Peruvian Ministry of Foreign Affairs is asking Washington and other allies for at least $350 million every year through 2030 for reservoirs to collect runoff, dams to regulate water flow from the Andes and irrigation techniques. Said a spokesperson:

“If we don’t solve our problems … this will become a problem for the United States. When you have a dysfunctional country, you have a problem for the entire region.”

Whether national security concerns will drive significant aid for countries like Peru remains to be seen. But the concerns are clearly making some think seriously about what climate change is doing to the world. I found myself wondering about how this is going down with the climate change deniers so prominent among Republicans in the House. Presumably if climate change is not happening it can’t be posing a security threat to the US.  But what if you’re a politician who professes great concern about national security?  And what if that question comes close to home as it does in some of the other articles in the series to which Somerville’s belongs?  There’s an article on the threat to Houston. Another on the what sea level rise will do to military bases on the US coast. Another on the threat of climate change-related disease in the US as well as other countries.

A day must eventually dawn when denial becomes impossible to maintain even when it is bolstered by wealthy vested interests. If perceived national security threats will help bring about that day, then the more they are pointed out the better.