Energy efficiency

The future of clean tech? Try hacking code

BOSTON--Internet, meet clean tech.

A weekend hackathon here showcased the promise -- and limits -- of applying mobile and Internet software development toward efficiency. To advocates, the "cleanweb" will succeed where clean tech fell short.

The Cleanweb hackathon, held in a warehouse-turned tech incubator in South Boston, on Sunday afternoon finished up a day and a half of furious coding by about 80 programmers, with some spending the night to finish their demos.

The 16 teams presented a very varied set of applications but they have one thing in common: they all seek ways to use natural resources … Read more

Greenpeace: Time for cloud companies to come clean

Greenpeace is pushing harder for cloud-computing companies to cut back on coal and tap into cleaner sources of electricity.

The environmental watchdog group today released its latest rankings of companies, including Google, Apple, and Amazon, that run giant data centers to serve up Web pages and services. Greenpeace now has a "clean energy index" to measure how much electricity from renewable sources is used by these companies.

Greenpeace has been pressuring cloud companies for years to improve the efficiency of their data centers, advocate for clean-energy policies, and disclose energy usage.

This year, Yahoo, despite its dire financial … Read more

'Cool' gadgets shine at Stanford

STANFORD, Calif. -- One of the tricks of building a successful company is identifying new markets. So while you might never have known you wanted a digital scent delivery system, a startup called Scent Sciences thinks that's exactly what you desire.

Scent Sciences and dozens of other companies flocked to Stanford University yesterday for the annual Cool Product Expo, a showcase of some of the, well, coolest gadgets, toys, electric cars, and oddball beauty items around. Among the most interesting items on display were 3D Systems' Cube, a personal 3D printer that costs just $1,300 and is being … Read more

SolarCity crunches data for home efficiency loans

SolarCity has rapidly grown to be one of the largest solar installers. Now it's applying its financing model to energy efficiency.

The company today announced the availability of energy-efficiency loans that homeowners can use to finance home upgrades and defray upfront costs.

SolarCity's main business is solar, installing photovoltaic panels and offering homeowners leases under which they pay a monthly charge rather than actually purchase the panels. Two years ago, it bought privately held Building Solutions to expand into services and get access to that company's software.

SolarCity has started offering home efficiency assessments to its solar … Read more

Bridgelux-Chevron deal brings LED streetlights to cities

LED producer Bridgelux has teamed with Chevron in a project to highlight the benefits of LED streetlights in cities.

The two companies today announced a program that allows municipalities to upgrade their streetlights to more efficient, long-lasting LED lighting with little or no up-front cost.

The LEDs use about half as much energy as traditional street lighting and require lower maintenance, providing monthly savings that will allow municipalities to pay for the switch, the companies said.

So far, the cities of Dublin, Calif., and Livermore, Calif., where Bridgelux is based, have signed on to test the service.

"Through this … Read more

Lovins: How to break the fossil fuel deadlock

CAMBRIDGE, Mass.--To those who say the world needs dramatic technology breakthroughs to get off of fossil fuels, energy guru Amory Lovins has a succinct answer: integrated design.

Lovins has been working in the trenches of energy and efficiency for more than 30 years, gaining a reputation as a radical thinker able to imagine possibilities others can't. He was here at MIT yesterday giving a presentation on his latest book, "Reinventing Fire" and speaking to entrepreneurs and investors at an event organized by Xconomy.

The book, written by Lovins and colleagues at his "think and do … Read more

Nest vows to fight Honeywell thermostat suit

Nest Labs today said it will "vigorously defend" itself from a patent infringement lawsuit filed by thermostat giant Honeywell.

The startup issued a statement two days after it got hit with the suit along with Best Buy, which sells its smart thermostat. The lawsuit seeks damages and an injunction to halt the sales of Nest's Learning Thermostat.

Nest Labs' statement from today is:

"We at Nest are proud of creating products that bring true innovation to home efficiency and we are continuing to innovate and bring products to market. The Nest Learning Thermostat is already making … Read more

Startup Soraa lights up with 'LED 2.0'

To build a better light fixture, startup Soraa started right at the foundation with a different kind of LED chip inside.

The Fremont, Calif.-based company tomorrow will come out of stealth mode and launch its first product, a spotlight which uses efficient LEDs (light emitting diodes). The MR 16 bulb replaces a 50-watt halogen and uses 12.5 watts and it offers a better beam and light quality, said Soraa CEO Eric Kim.

The bulb from Soraa, which has raised more than $100 million in venture capital, is the first in a planned line of LEDs for general lighting … Read more

Cree: LEDs aren't just more efficient, they're better

Cree today introduced an LED lighting component that will bring prices down significantly, but the company has come to realize that only cutting prices won't make LED lighting mainstream.

The company said its latest XT-E White LED delivers an industry-best 162 lumens per watt at room temperature. Boosting the price performance of LEDs results in a cost reduction of about 25 percent at the retail level in a year or two, said product marketing manager Paul Scheidt.

That's significant given that LED lighting has a higher upfront cost than more established products, but Scheidt said the industry's … Read more