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Solar Energy Zones: DOI, DOE, Announce Renewables Plan

More than half a million acres of public lands have been deemed worthy of solar development

2 min read
Solar Energy Zones: DOI, DOE, Announce Renewables Plan

A joint effort between the Department of the Interior and the Department of Energy has yielded a plan involving "solar energy zones," or massive tracts of public lands in the western United States deemed appropriate for industry-scale solar power development.

The eloquently named Draft Solar Programmatic Environmental Impact Statement outlines some of the best areas for solar power in six western states. It excludes a number of types of area: "those prohibited by law, regulation, Presidential proclamation, or executive order; lands with slopes of 5 percent or greater and/or sunlight levels below 6.5 kilowatt-hours per square meter per day; and areas with known resources, resource uses, or special designations identified in local land use plans that are incompatible with solar energy development."

That may seem like a lot of exclusions, but the Bureau of Land Management (part of the DOI) manages 120 million acres in the six western states alone. Even with all the exclusions, about 22 million acres are left over that could be suitable for development, and 677,400 acres have been included in the solar energy zones; the zones are in California, Colorado, Nevada, New Mexico, Utah and Arizona.

The government's aim to fast-track renewable energy development also means that the permitting processes for big solar projects are moving relatively quickly. Eight industrial-scale solar plants have been approved recently, which will eventually produce 3,572 megawatts of electricity. If all of the additional 104 applications currently on file with the BLM are built, that would mean another 60,000 megawatts.

These are lofty goals, no doubt, given that the total installed solar capacity in the US only climbed past 2,000 MW in 2009. However, it has become increasingly clear that solar installations have only begun to scratch the surface of both the US and worldwide potential. As discussed here earlier, some see the potential to jump as high as 980 gigawatts of solar power around the globe by 2020, so the joint DOI/DOE effort to get that started is certainly a good step.

(Image via DOE/DOI)

The Conversation (0)
This photograph shows a car with the words “We Drive Solar” on the door, connected to a charging station. A windmill can be seen in the background.

The Dutch city of Utrecht is embracing vehicle-to-grid technology, an example of which is shown here—an EV connected to a bidirectional charger. The historic Rijn en Zon windmill provides a fitting background for this scene.

We Drive Solar

Hundreds of charging stations for electric vehicles dot Utrecht’s urban landscape in the Netherlands like little electric mushrooms. Unlike those you may have grown accustomed to seeing, many of these stations don’t just charge electric cars—they can also send power from vehicle batteries to the local utility grid for use by homes and businesses.

Debates over the feasibility and value of such vehicle-to-grid technology go back decades. Those arguments are not yet settled. But big automakers like Volkswagen, Nissan, and Hyundai have moved to produce the kinds of cars that can use such bidirectional chargers—alongside similar vehicle-to-home technology, whereby your car can power your house, say, during a blackout, as promoted by Ford with its new F-150 Lightning. Given the rapid uptake of electric vehicles, many people are thinking hard about how to make the best use of all that rolling battery power.

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