Microhydropower can be one of the most simple and consistent forms or renewable energy on your property.
If you have water flowing through your property, you might consider building a small hydropower system to generate electricity. Microhydropower systems usually generate up to 100 kilowatts of electricity. Most of the hydropower systems used by homeowners and small business owners, including farmers and ranchers, would qualify as microhydropower systems. But a 10-kilowatt microhydropower system generally can provide enough power for a large home, a small resort, or a hobby farm.
A microhydropower system needs a turbine, pump, or waterwheel to transform the energy of flowing water into rotational energy, which is converted into electricity.
Our page on planning a microhydropower system has more information.
How a Microhydropower System Works
Hydropower systems use the energy in flowing water to produce electricity or mechanical energy. Although there are several ways to harness the moving water to produce energy, run-of-the-river systems, which do not require large storage reservoirs, are often used for microhydropower systems.
For run-of-the-river microhydropower systems, a portion of a river's water is diverted to a water conveyance -- channel, pipeline, or pressurized pipeline (penstock) -- that delivers it to a turbine or waterwheel. The moving water rotates the wheel or turbine, which spins a shaft. The motion of the shaft can be used for mechanical processes, such as pumping water, or it can be used to power an alternator or generator to generate electricity.
What are Ecosystem Services?
The Millennium Ecosystem Assessment defined Ecosystem Services as “the benefits people derive from ecosystems”. Besides provisioning services or goods like food, wood and other raw materials, plants, animals, fungi and micro-organisms provide essential regulating services such as pollination of crops, prevention of soil erosion and water purification, and a vast array of cultural services, like recreation and a sense of place..
In spite of the ecological, cultural and economic importance of these services, ecosystems and the biodiversity that underpins them are still being degraded and lost at an unprecedented scale. One major reason for this is that the value (importance) of ecosystems to human welfare is still underestimated and not fully recognized in every day planning and decision-making, in other words, the benefits of their services are not, or only partly, captured in conventional market economics. Furthermore, the costs of externalities of economic development (e.g. pollution, deforestation) are usually not accounted for, while inappropriate tax and subsidy (incentive) systems encourage the over-exploitation and unsustainable use of natural resources and other ecosystem services at the expense of the poor and future generations.
Book Launch - Bangladesh Confronts Climate Change: Keeping Our Heads above Water
12:30 PM - 2:00 PM ESTWashington, DC
Learn how Bangladesh is leading the way forward in adaptation, from local community action to international negotiations.
Like most developing nations, Bangladesh emits a fraction of the world’s greenhouse gases. Yet it is one of the most climate vulnerable countries in the world, facing increasingly severe flooding, droughts and cyclones. Climate scientists estimate that rising sea levels alone will displace 18 million people by 2050.
But Bangladeshis are not simply victims of climate change. They have centuries of experience coping with environmental variability, and they are leading the way forward in adaptation, from local community action to international negotiations. Cyclone shelters and early warning systems have dramatically reduced fatalities, while Bangladeshi experts have played a central role in global climate talks.
David Hulme will launch his co-authored book, Bangladesh Confronts Climate Change: Keeping Our Heads above Water, and discuss the findings of the book with a participants and a panel of experts.
David Hulme, Professor of Development Studies, The University of Manchester; Executive Director, Global Development Institute. David Hulme is Professor of Development Studies at the University of Manchester where he is Executive Director of the Global Development Institute and CEO of the Effective States and Inclusive Development Research Centre. He has worked on rural development, poverty and poverty reduction, microfinance, the role of NGOs in conflict/peace and development, environmental management, social protection and the political economy of global poverty for more than 30 years. His main focus has been on Bangladesh but he has worked extensively across South Asia, East Africa and the Pacific. His recent books include Bangladesh Confronts Climate Change (Anthem, 2016), Should Rich Nations Help the Poor? (Polity, 2016), Global Poverty: Global Governance and Poor People (Routledge, 2015), Governance, Management and Development (Palgrave, 2015), and Just Give Money to the Poor (Kumarian Press, USA, 2010).
Moushumi Chaudhury, Associate, Climate Resilience, World Resources Institute. Moushumi Chaudhury is an Associate at World Resource Institute’s Climate Resilience Practice, where she builds capacity to prioritize adaptation options in Fiji and Kenya as well as supports South-South knowledge exchange. She previously worked with the CGIAR Research Program on Climate Change, Agriculture and Food Security (CCAFS) covering East Africa, West Africa and South Asia. Prior to her experience with CCAFS, she worked with the United Nations Development Program in New York, the Center for International Forestry Research Institute in Indonesia as well as the UN Food and Agriculture Organization. Moushumi holds a PhD in Development Studies from the University of Sussex in Brighton, England. She has an MS in Natural Resources and Environment from the University of Michigan in Ann Arbor and a BA in Anthropology & Sociology from Smith College in Northampton, Massachusetts.
Share With Your Networks
James A. Harmon Conference Center
World Resources Institute
10 G Street NE, Suite 800
Washington, DC 20002
China turns to ecology in search of ‘civilisation’BY James Oswald
From obscure origins, China’s ecological civilisation model has grown into an international movement
In 2007, then Premier Hu Jintao announced that China would become an ‘ecological civilisation’, eschewing the previous development model that had seen economic growth take priority over environmental health.
The Chinese Communist Party (CCP) has a history of using the concept of civilisation, or wenming, as part of its moralistic methods of governance: material civilisation, spiritual civilisation, and political civilisation have all been invoked.
In the Deng era, material civilisation set an ideal material standard of living and spiritual civilisation guided the moral decisions of these Chinese nouveau riche. Later, Jiang Zemin introduced political civilisation that focused on regulation, law, governance and institution-building. This Chinese notion of civilisation is best understood as a process, of ‘becoming civilised,’ rather than the Western conception of civilisation that has its roots in the notion of the city.
Though these civilising discourses are a response to real or perceived problems arising from China’s development and incorporation into the global market economy, they differ from ecological civilisation in an important way. The previous civilisations are inward-looking attempts by the CCP to address issues arising from its development and modernisation. Ecological civilisation, in contrast, has international implications— after all, the present environmental crisis, while it may see a particularly severe expression in mainland China, is international in nature and its causes and manifestations are global.
‘Promote ecological civilisation, build a beautiful China’. From the Central Propaganda Department’s magazine, Current Affairs
Ecological civilisation is distinct from its predecessors in another important way—it arose from an already existing academic debate, with Chinese academics developing the idea after reading about it in a Russian article from 1984.
The original publication describes ecological civilisation as a system that synthesises concepts from social science (in the Marxist-Leninist tradition) with ecological studies, so as to mitigate the negative effects that development has on the environment, and to advocate the frugal use of resources to promote ‘harmonious development.’ A summary of this original publication appeared in the Guangming Daily in 1985. The idea caught the attention of Liu Zongchao, then a researcher at the Chinese Academy of Sciences, and inspired him to begin writing on the topic.
How Urban Trees Can Save Lives
Planting Healthy Air report quantifies health benefits of trees for 245 cities globally
Heatwaves are one of the world's most underestimated threats, killing more than 12,000 people every year around the world—more than any other weather-related event. And heat is especially dangerous in cities, which tend to be much warmer than surrounding less-developed areas. On top of that, cities tend to have higher levels of air pollution, which contribute to more than 3 million deaths every year. With 70 percent of the world’s population predicted to live in cities by 2050, heat and air pollution constitute a major public health concern.
One relatively simple solution to this problem? Plant more trees in cities. Trees cool the air by casting shade and releasing water vapor, and their leaves can filter out fine particulate matter (PM)—one of the most dangerous forms of air pollution, generated from burning biomass and fossil fuels. The Nature Conservancy has studied the effects of trees on air quality in 245 of the world’s largest cities and documented the findings in the Planting Healthy Air report.
Key Takeaways of the Report
The Planting Healthy Air report documents which cities stand to benefit most from tree plantings, in terms of both heat and PM reduction, and how much investment would be required to achieve meaningful benefits.
The analysis found that investing just US$4 per resident in each of these cities in tree planting efforts could improve the health of millions of people, and that trees are as cost-effective as many other common solutions.
Most of the cooling and filtering effects created by trees are fairly localized, so densely populated cities—as well as those with higher overall pollution levels—tend to see the highest overall return on investment (ROI) from tree plantings.
The localized nature of trees’ effects, however, means that particular neighborhoods in virtually any city could benefit from plantings. City planners can even target plantings to protect areas with especially vulnerable populations—such as near schools and hospitals—or use trees as a screen against PM coming from highways and industrial areas.
While trees alone can't solve the entirety of cities' air and heat problems, they are a critical piece of the puzzle. The report shows that even a conservative global investment in urban trees can save tens of thousands of lives.
Editor's Note: Scroll through the interactive map at the bottom of the page to see which neighborhoods within each of the cities from the study have the highest return on investment for heat and PM reduction.
Marrakech Climate Summit Continues Momentum Towards Low-Carbon Future
by The Nature Conservancy / Press Statement
MARRAKECH, MOROCCO | November 18, 2016
Over the past two weeks, leaders from around the world reaffirmed their commitment to taking decisive action together on climate change, and to advancing the landmark Paris Agreement. That Agreement, reached last December, established for the first time a strong framework in which all countries agreed to take national action to address the threat of climate change. Throughout this year’s climate conference in Marrakech, known as COP 22, negotiators began the tough work of implementing that agreement, by developing guidance to support countries’ efforts. By the close of COP 22, more than 100 countries had formally joined the Agreement.
The Marrakech conference followed closely other key advances in recent months, such as the speedy entry into force of the Paris Agreement, the recent aviation emissions reduction agreement from Montreal, and the Kigali agreement to reduce heat-trapping hydrofluorocarbons used in air conditioning and refrigerators.
The results of the U.S. election of a candidate who has expressed skepticism about climate change occurred during the COP 22, and governments, businesses and civil society, including those in the United States, responded with renewed determination to advance management of the risks presented by climate change and to continue to develop a clean energy, low-carbon future. On November 16, more than 360 global companies and investors stated their continued support for previously agreed limits on global warming and to accelerating efforts to seize the opportunities of moving to a low-carbon economy.
Statement, Blog, from EPA Administrator Gina McCarthy on Historic Kigali Agreement
Statement from EPA Administrator Gina McCarthy on Historic Kigali Agreement
This week, nearly 200 nations came together to take a historic step in combatting climate change. After years of hard work and difficult negotiations, a global commitment to protecting our planet brought us to this moment. Amending the Montreal Protocol will significantly phase down HFCs and avoid up to a half-degree centigrade of warming by the end of the century. While we have seen many significant successes under President Obama’s leadership in fighting climate change, this day will unquestionably be remembered as one of the most important in our effort to save the one planet we have. It is truly an exciting time for all of us who have worked so hard to achieve this new level of success, and as head of the U.S. delegation, I could not be more delighted with the outcome of the negotiations and our collective resolve. The prospects for the future of our planet are bright.
Blog: A Historic Day in Our Fight Against Climate Change
By EPA Administrator Gina McCarthy
Protecting the air we breathe and slowing the effects of climate change are a core part of EPA’s mission. And today, I am proud to say that we, alongside nearly every country on Earth, have taken another historic step in carrying out that mission by cutting down on the use of damaging hydrofluorocarbons, or HFCs.
Financing the Climate-Change Transition
"Over the next 15 years, an estimated $93 trillion will be needed for investments in low-carbon infrastructure."
POTSDAM, PARIS, ZURICH – Unless the world reduces greenhouse-gas emissions rapidly, humanity is likely to enter an era of unprecedented climate risks. Devastating extreme-weather events are already increasing in frequency, but much of the worst climate-related damage, such as a sustained rise in sea levels, will be recognized only once it is too late to act.
Clearly, the climate system’s time horizon does not align well with the world’s much shorter political and economic cycles. Listed companies report on a quarterly basis, and recent regulatory changes, such as those mandating increased use of mark-to-market accounting, limit long-term thinking.
What Will Trump Do?
The populist surge challenging political establishments worldwide has now claimed the biggest prize of all. Project Syndicate commentators weigh the costs for America and the world.
Governments usually have legislative cycles of no more than four years, and they must also respond to immediate developments. Yet stabilizing the climate requires sustained and consistent action over an extended period.
How does oil affect the environment?
Crude oil is used to make petroleum products used to fuel airplanes, cars, and trucks; to heat homes; and to make products like medicines and plastics. Although petroleum products make life easier, finding, producing, and moving crude oil may have negative effects on the environment. Technological advances in exploration, production, and transportation of oil and enforcement of safety and environmental laws and regulations help to avoid and reduce these effects.
Technology helps reduce the effects of drilling and producing oil
Exploring and drilling for oil may disturb land and marine ecosystems. Seismic techniques used to explore for oil under the ocean floor may harm fish and marine mammals. Drilling an oil well on land often requires clearing an area of vegetation. These impacts are reduced by technologies that greatly increase the efficiency of exploration and drilling activities. Satellites, global positioning systems, remote sensing devices, and 3-D and 4-D seismic technologies make it possible to discover oil reserves while drilling fewer exploratory wells. Mobile and smaller slimhole drilling rigs reduce the size of the area disturbed by drilling activities. The use of horizontal and directional drilling makes it possible for a single well to produce oil from a much larger area, which reduces the number of wells required to develop an oil field.
Implementing Rules and Regulation for Green Infrastructure
The Implementing Rules and Regulation, Part 1 (IRR-1) for Green Infrastructures in pursuant to Section 24 of SP 1917 S-2009 - "An Ordinance Requiring the Design, Construction or Retrofitting of Buildings, Other Structures and Movable Properties to Meet Minimum Standards of a Green Infrastructure, Providing Incentives thereof and for Other Purposes" also known as the "Green Building Ordinance of 2009". (click on the links below for full text)
Watersheds Lost Up to 22% of Their Forests in 14 Years. Here’s How it Affects Your Water Supplyby Yiyuan Qin and Todd Gartner - August 30, 2016
That’s because upstream forests, wetlands and other “natural infrastructure” play a critical role in supplying clean water downstream. They stabilize soil and reduce erosion, regulate water flow to mitigate floods and droughts, and purify water. Yet the world’s watersheds lost 6 percent of their tree cover on average from 2000-2014, putting citizens at risk of losing their water supplies.
Who Can Use GFW Water?
GFW Water allows anyone with internet access, regardless of expertise, to visualize critical watershed information and threats, and screen for cost-effective, sustainable natural infrastructure solutions. For example:
- Downstream utilities, municipalities, businesses and others who make infrastructure investments can identify risks and explore natural infrastructure options and find information to improve operations and protect water at a lower cost.
- Finance and development institutions can gather data, explore trends and gain insights about the regions they support to develop a pipeline of investable opportunities to enhance water security and bolster economic development.
- Researchers and civil society can use data to support their projects and find the information needed to advance their research and campaigns to protect watersheds.
Global Forest Watch (GFW) Water, a global mapping tool and database launched today, examines how forest loss, fires, unsustainable land use and other threats to natural infrastructure affect water security throughout the world. GFW Water provides data sets, statistics and risk scores for all of the world’s 230 watersheds, areas of land where all of the water drains to a common outlet such as a river. Users can drop a pin anywhere to learn about the risks to the water supply near them, and find resources on how investing in natural infrastructure protection can help alleviate these threats.
Findings from GFW Water reveal some of the watersheds most threatened by forest loss, fires and erosions:
Recent Forest Loss in Sumatra, Indonesia Watershed
As forests are cut down or converted to other land uses, their ability to regulate flow and purify water diminishes, putting communities at risk of flood, drought, higher water treatment costs and greater incidence of drinking water contamination.
The watershed of Sumatra, Indonesia experienced the most forest loss from 2000-2014, losing more than 22 percent of its forest cover (8 million hectares, or an area about the size of South Carolina). Research shows that agricultural expansion, logging and infrastructure extension as a result of expanding global markets for pulp, timber and oil palm are among the major drivers. Forest clearing in the region has intensified floods, landslides, fires and water pollution.