Lanai: Model for Sustainable Enterprise
•Als PPT, PDF herunterladen•
1 gefällt mir•1,810 views
The document discusses Lanai's existing and potential renewable energy and sustainability projects. Existing projects include solar and wind energy generation, electric vehicles, and limu restoration. Planned projects are a desalination plant and organic farms. Possible future projects involve solar thermal energy, green roofs, wastewater treatment, and fish farms. The overall goal is for Lanai to become 100% sustainable and self-sufficient as a model for other communities.
Empfohlen
Empfohlen
Weitere ähnliche Inhalte
Was ist angesagt?
Was ist angesagt? (20)
Andere mochten auch
Andere mochten auch (20)
Ähnlich wie Lanai: Model for Sustainable Enterprise
Ähnlich wie Lanai: Model for Sustainable Enterprise (20)
Mehr von Stone Soup Leadership Institute
Mehr von Stone Soup Leadership Institute (20)
Kürzlich hochgeladen
Kürzlich hochgeladen (20)
Lanai: Model for Sustainable Enterprise
- 1. L na iā ʻ“The Model for Sustainable Enterprise”
- 2. Sustainability on Lanai • Existing projects (Solar, electric cars, limu project, wind) • Future projects (Desalination, organic farms) • Possible projects (Solar thermal, wastewater treatment plant, green roofs, fish farms) • 90% of energy needs depend on fossil fuels • Renewable energy goals at 70% by 2030
- 3. Existing Projects • Solar • Wind • Electric Cars • Limu Project
- 4. Solar • Photovoltaics (semi-conductor technology to directly convert sunlight into electricity) • Requires sunlight to produce energy • Popular energy source • 18-43 cents per KWh • Most expensive renewable energy source
- 5. Electric Cars • Power station at central office • Brought in by Ellison • Laboratory for sustainability.
- 6. Wind • Controversial issue • 25% of the island • No benefits for Lanai • Ideal location • New owner plans for wind to be on a community scale
- 7. Limu Project • Northern coast of Lanai • Restoration efforts have been difficult • LHES students take part in efforts • $20,000 grant
- 8. Projects Coming Soon • Desalination Organic Farms
- 9. Desalination • Lanai’s largest sustainability project • Water supply to be brackish, not ocean • Solar power to convert salt water into fresh water • More fresh water, more sustainability projects
- 10. Organic Farms • Drip-water irrigation systems • Hope to export produce to primarily Japan • Vast amounts of open land • Previously largest pineapple plantation in the world
- 12. Solar Thermal • Uses mirrors to concentrate sunlight • Only produces heat • Stores energy in various mediums • Potentially generate power 24 hours a day • 19-35 cents per KWh
- 13. Green Roofs • Cost effective • Combines wind and solar • Alternative to large farms • Can be done on an individual level
- 14. Fish Farms • Draws on traditional practices • Proposed to be located north of Kaumalapau • Perpetuates native Hawaiian fish • Provides a reliable supply of seafood • Take advantage of Oceansphere technology •No impact on the enviroment
- 15. Wastewater Treatment • Water-recycling system • Solve sanitation problems on the island • All natural multistep biological digestion process • Water becomes clear and odor free • No extra septic tanks or plumbing
- 16. My Impression • Sustainability projects are necessary • A combination of projects increases the likelihood of success • Not one is better than the other • Creates a positive attitude
- 17. The Overall Goal • Create a 100% self sufficient island • Fully sustainable future • Reducing overall costs of living • Set a green example for the rest of the world
Hinweis der Redaktion
- Photovoltaics use semi-conductor technology to directly convert sunlight into electricity. Photovoltaics, therefore, only operate when the sun is shining, and must be coupled either with other power generation mechanisms to ensure a constant supply of electricity. Photovoltaics are a popular energy source both on the utilities side and for residential home use. Photovoltaic capacity has blown past solar thermal power generation capacity. As of 2008, there was 800 MW of grid-connected photovoltaic capacity, or nearly double the amount of solar thermal generation capacity. [6] Cost per watt for this technology is currently 18-43 cents per KWh. [5]
- On the northern coast of Lana ’ i overlooking Molokai is the Keomoku coast & Uncle Allen Kaiaikamalie ’ s limu restoration site. Uncle worked for years with friends and family to learn about the plentiful limu he enjoyed harvesting as a child. Despite learning all he could about it, restoration efforts have been difficult. In 2009 Ms Galloway and community member Robin Kaye began bringing LHES students to take part in this grassroots effort, and in March 2012 they secured a $20,000 grant from the Hawaii Community Foundation and NOAA to scale up the project. So far, only one experiment has been successful, but it ’ s enough to encourage us! This year Uncle ’ s limu sea cage will be reinforced, rebuilding of a Hawaiian fishpond nearby will begin, and at the school greenhouse students will design their own tank experiments to propagate limu. As well, community awareness and involvement is increasing. Next up - an attempt to remove the sediment that ’ s been thwarting limu growth for the last 20 years!
- Solar Comparison Both photovoltaic and solar thermal are the two established solar power technologies. Solar thermal works by using mirrors to concentrate sunlight. The concentrated sunlight is then used either directly as a source of heat, as in solar water heating, or to drive a heat cycle such as a sterling engine. Additionally, since solar thermal only directly produces heat, it can store thermal energy various mediums. Some plants, in fact, can store enough energy for 7.5 hours of generation in lieu of sunlight. [3] Therefore, solar thermal can potentially generate power 24 hours a day. There is a long history of utility scale solar thermal generation. Plants were built in the American Southwest throughout the last 30 years. [3] As of 2004 there is 418 MW of installed solar thermal power capacity installed in the US. [4] All told, solar thermal energy costs between 19-35 cents per KWh. [5] Solar Economics At 18-43 cents per KWhr, solar power is one of the most expensive renewable energy sources available. The price of solar vs. other renewable energy sources are shown in Fig. 1. From these figures, it is clear that solar is one of the least cost-effective forms of alternative energy. In fact, the U.S. Energy Information Administration projects that solar power will represent a small fraction of renewable energy generation at least through 2035. [7] The economics of photovoltaics, however, may be skewed by implementation issues. First, Germany has the largest market for solar power in the world. [8] Germany, and much of northern Europe get rouhgly 2/3rd the solar irradiation of Minneapolus and a little more than half the horizontal solar radiation of southwestern US cities like Los Angeles. [9] Additionally, installation overhead currently form a large portion of the total system price. In fact, as of 2007 the cost per watt of a Photovoltaic power plant could be more than double the cost of the photovoltaic panels. [10] If these installation costs can be mitigated through economies of scale or other means, the price of solar power has substantial room to drop.
- For example, Jennifer Appel , president of Appel Green Roof, is pitching a green-roof project using a combination of wind and solar. “ It would accomplish Mr. Ellison ’ s goals much more efficiently and much more cost-effectively than the large-scale systems that have been done on Maui and Oahu, ” she told PBN in an email. Additionally, instead of creating farms, Appel wants to introduce the concept of adding drip tubing to allow the plants to pull moisture from the air instead of the ground.
- Another business pitch for Lanai comes from Dale Sarver , co-founder of Deep Blue Research LLC, a Big Island-based ocean research and consulting firm. A consultant/scientific adviser for Maui Fresh Fish ’ s proposed sustainable fish farm off Lanai, he acknowledges that the concept isn ’ t new but hopes that Ellison will be able to use his influence to push the project forward. “ I feel this would fit into his vision for the island, ” Sarver told PBN in an email. “ I ’ m trying to make sure he knows that there ’ s an opportunity and then he can make a decision. ” The proposed fish farm would be located just north of Kaumalapau Harbor in 300 feet of water. It would farm moi and kahala, then transition to snapper such as opakapaka. Hawaii Oceanic Technology, Inc . has created the Oceansphere to control the world's seafood harvesting and hopefully bring balance back to our oceans. The Oceansphere is an open ocean aquaculture where farming fish in the open ocean becomes a reality. The Oceansphere is a self sustaining and untethered sphere that is designed to product a large harvest of fish (for human consumption) without an impact on the environment. The first Oceanspheres will house tuna in the waters of Hawaii.
- California-based Envirocycle Worldwide Inc. is working with University of Hawaii professor Roger Babcock on a new onsite wastewater-treatment and water-recycling system to be deployed in certain areas in Hawaii, including Lanai. “ [This would be] for areas in Hawaii that have the greatest need for proper sanitation, ” said Bill Carpenter Jr., founder and CEO of Envirocycle Worldwide. “ Our staff based in Honolulu have a great deal of expertise with the sanitation problems on the islands and are fully committed to solving these problems. ” The system works by using an all-natural multistep biological digestion process to treat wastewater until it is clear and odor-free. The process utilizes a service unit with no extra septic tanks or plumbing.