A large-scale wind, water and solar energy system can reliably supply the world’s needs, significantly benefiting climate, air quality, water quality, ecology and energy security ... [T]he obstacles are primarily political, not technical.
Strong policies and innovation can make the difference for energy security, climate change, air quality, and universal access to modern energy services in parallel - in short, building a secure, affordable, sustainable energy system that is available to all.
But that's not enough: To maintain energy security, one needs a supply system that provides a buffer against shocks. It needs large, flexible markets. And it's important to acknowledge the fact that the entire energy supply chain needs to be protected.
For the record, I am sticking with my claim that the simultaneous degradation of air quality, water quality, water supply, food safety, soil quality, and other environment-related variables is the main challenge to China's continued development.
If we are serious about moving toward energy independence in a cost-effective way, we should invest in solar energy. If we are serious about cutting air and water pollution and reducing greenhouse gas emissions, we should invest in solar energy.
There should be intensive research of all forms of clean energy - sun power, wind power, water power including wave power. In some places thermal energy is available. I stayed on a ranch which, with solar panels and two windmills, provided its own energy.
Windmills installed around the world converting their direct current into alternating current and feeding the electric energy into the world network can harvest the planet Earth's prime daily energy income source-the wind--and adequately supply all the world's energy needs
I would argue that we have a patriotic duty to move toward energy independence and clean energy. It is a matter of national security - energy security, climate security, economic security, job security, everything.
In reality, Republicans have long been at war with clean energy. They have ridiculed investments in solar and wind power, bashed energy-efficiency standards, attacked state moves to promote renewable energy and championed laws that would enshrine taxpayer subsidies for fossil fuels while stripping them from wind and solar.
With sufficient water on the Moon, solar energy can be used to split the water into hydrogen and oxygen. The oxygen is, of course, critical for humans to breathe and the water important for us to drink.
Europe needs a clear and more collective and cohesive policy on security and energy supply. Today the issue of security of energy supply is only really considered at a national member-state level, but in reality we need a much greater European-wide approach on this issue.
One of the reasons I think the population question is important, if we want to be as green as possible, any of our energy that is truly renewable is limited. Solar and wind are intermittent and they're so diffuse, it's difficult to harness them in a significant way. But one thing we could be doing is making it a law (like it is in Israel and Cyprus) to take every building eight stories or under and heat all of the water in those buildings with solar energy. It's absolutely simple and cheap technology.
We are proposing buildings that, like trees, are net energy exporters, produce more energy than they consume, accrue and store solar energy, and purify their own waste, water and release it slowly in a purer form.
Sunlight and wind are inherently unreliable and energy-dilute. As such, adding solar panels and wind turbines to the grid in large quantities increases the cost of generating electricity, locks in fossil fuels, and increases the environmental footprint of energy production.
There is an urgent need to stop subsidizing the fossil fuel industry, dramatically reduce wasted energy, and significantly shift our power supplies from oil, coal, and natural gas to wind, solar, geothermal, and other renewable energy sources.
The procedure has a strange Alice-in-Wonderland quality. The reservoir was created as a public water supply, yet the community, probably unconsulted about the sportsmen's project, is forced either to drink water containing poisonous residues or to pay our tax money for treatment of the water to remove the poisons - treatments that are by no means foolproof.
We need to bring sustainable energy to every corner of the globe with technologies like solar energy mini-grids, solar powered lights, and wind turbines.