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rooftop solar

Is the Solar Energy Industry Shifting from Big Solar to Rooftops?

February 18, 2014 by Rosana Francescato

Solar Project Size

There has been quite a lot of talk this week about the recently opened Ivanpah Solar Electric Generating Station, which has officially begun generating electricity. The plant’s primary owners include BrightSource Energy, NRG Energy, and Google.[read more]


Calculating the Social Cost of Carbon and Value of Rooftop Solar: The Movement Has Begun

January 15, 2014 by Jim Pierobon

Social Cost of Carbon

How much value should owners of rooftop solar systems receive credit for in reducing their use -- and the environmental impact -- of utility-generated electricity? That is THE question Minnesota is tackling this month, the first state ever to do so.[read more]

Study Shows Rooftop Solar Adds Thousands To Home Resale Values

December 20, 2013 by Silvio Marcacci

Rooftop Solar and Home Value

Installing rooftop solar panels boosts a home’s resiliency and green credentials while cutting utility bills, but does it also increase a home’s resale value? The answer according to a new Lawrence Berkeley National Laboratory study, is a resounding yes – at least in California.[read more]

Lessons From The Past Ten Years: Pooled Assets

October 24, 2013 by Rob Day

There have been a lot of watershed moments good and bad in the cleantech sector over the past ten years, but one development doesn't get as much attention: In 2008, US Bancorp started putting money into pooled project finance structures for residential rooftop finance.[read more]

Will a New Guide for Regulators Settle the Debate About the Value of Rooftop Solar?

October 9, 2013 by Herman Trabish

Rooftop Solar Regulation

A new, more rigorous method for calculating the value of solar energy could give regulators the tools they need to resolve the growing tension between utilities and rooftop solar builders. The method takes lessons learned from sixteen distributed solar generation valuations.[read more]

The Grid and Net Metering: A Net Positive

June 4, 2013 by Rosana Francescato

net metering

It’s not surprising that utilities aren’t fans of net metering. They can’t say that the reason they’re against it is because it eats into their profits. Instead, they use the argument that all customers are subsidizing those who use net metering.[read more]

Massachusetts Solar Energy Installations More Than Quadrupled Between 2010-2012

May 28, 2013 by Joshua Hill

Massachusetts solar energy boom?

Recently released Massacusetts Clean Energy Center data shows that residential solar installations have more than quadrupled between 2010 and 2012 in the state.[read more]

Solar Energy: As Germany Goes, So Goes Vermont?

May 9, 2013 by Meredith Angwin

solar energy inspiration?

The German program was an inspiration to the crafters of Vermont’s May, 2009 feed-in tariff law, the energy-generation lynchpin of the state’s plan to use 90% renewables by 2050.[read more]

Encouraging Solar Energy Development in Hawaii [INFOGRAPHIC]

April 20, 2013 by Antonio Pasolini

Hawai'i solar energy

Hawaii is one of the American states cracking ahead to make a switch to clean, solar power. As usual, government incentives play a key part in promoting a switch to renewable energy.[read more]

Shared Renewables Could Supercharge California’s Clean Energy Economy

April 9, 2013 by Silvio Marcacci

California’s clean energy economy is already America’s largest, but two bills making their way through the state legislature could open access to renewables for millions of utility customers – without any subsidies.[read more]

Solar Energy Innovation Promises to Drop Photovoltaic Prices

April 9, 2013 by Tom Schueneman

new PV materials

Historically photovoltaic production has required the use of rare earth metals. However scientists have just broken the global record for solar energy conversion with “earth-abundant” materials.[read more]

Can Household Solar Energy be a Primary Source of Low-Emission Power?

April 6, 2013 by Barry Brook

In a grid dominated by unsequestered coal and gas, and treating PV as a non-essential add-on to an electricity meter, PV provides a legitimate source of emission abatement with high, but declining costs.[read more]

Are Traditional Utilities Becoming Obsolete?

March 30, 2013 by Sarah Battaglia

Some believe that solar panels are becoming so common that they may eventually put utilities out of business. Can this really happen?[read more]

Solar Energy for Chicago Affordable Housing

March 26, 2013 by Joseph Romm

solar energy in Chicago

The program is part of a push by VGI to bring more sustainability and energy independence, as well as more efficient appliances, infrastructure and plumbing, to residents of Chicago’s low-income urban areas.[read more]

2011: The Summer Rooftop Solar Goes Big

June 21, 2011 by Chris de Morsella

Solar power continues along its firmly established downward cost curve and edges ever closer to achieving the historic milestone of grid parity. Today it just got a huge boost that will help it scale out in this country and will go a long way towards tipping the long term balance in favor of solar. In fact as the industry achieves scale...[read more]