According to Section 136 of the U.S. Code, energy conservation subsidies provided by public utilities,* either directly or indirectly, are nontaxable: “Gross income shall not include the value of any subsidy provided (directly or indirectly) by a public utility to a customer for the purchase or installation of any energy conservation measure.” (This exclusion does [...]

American solar energy incentive programs are increasing every year. California’s Million Solar Roofs initiative is the latest of a number of solar energy tax breaks being legislated in the US.
You can read about state and local incentives on the DSIRE database.
Here is a list of Federal initiatives from the database (taken from dsireusa.org):
Corporate Depreciation: Modified [...]

The world’s first solar plane, called the Solar Impulse, took to the runway this week , but hasn’t yet attempted to leave the ground. The plane weighs about as much as car, boasts a 207-foot-long wingspan (equivalent to that of most commercial jets), and has 11,628 solar cells attached to its wings, according to the [...]

Sanyo Solar has just opened in Salem, Oregon, bringing with it the promise of 200 new green jobs. The $84 million facility is the first piece of what will become the Salem Energy and Technology Park. The new plant produces core materials for the manufacture of solar cells used in solar panels.
Governor Ted Kulongoski [...]

Google’s motto continues to be - If you want something done right, do it yourself. And now they’ve added the solar power business to their plan. Google’s developing new solar tech that will drop the cost from 18 cents a kW-h to just under 5 cents.
“We’ve been looking at very unusual materials for the [...]

An American firm is currently working on a prototype solar panel that could be embedded into existing roads. The company, Solar Roadways, won a $100,000 grant from the US Department of Transportation.
The panels would also be covered with a mosaic of small lights, which could be illuminated to provide road markings and warning messages [...]

Chevron will partner with BrightSource Energy to develop 29 megawatts of thermal power from the sun. The process uses mirrors to concentrate the solar rays onto a water tank, turning the water to steam. The steam can then be used to turn a turbine and produce electricity or pumped down a well to loosen heavy [...]

A national solar policy is likely to be announced in November this year, union minister for New and Renewable Energy Farooq Abdullah said here today.
Abdullah said that national policy to be announced on November 14 will promise vast incentives to the users of solar energy.
The union minister who held a meeting with Chief Minister Prem [...]

In a surprisingly valiant effort by a car racing institution go greener and to offset somecarbon, the Pocono Raceway in Pocono, PA is building a large solar array in a parking lot on its grounds.
The Pocono Raceway Solar Farm will cover 25 acres, include 40,000 solar PV panels and is the world’s largest renewable energy [...]

Last month, plans were announced for covering the Milan Trade Fair with an 18-MW rooftop solar array - which would be the world’s largest solar array. Now, Itally will also be able to claim the second largest rooftop array. The new array will be on the Interporto di Padova in Padua and will have [...]