Yesterday, Cleantech Open Northeast, the regional branch of one of the nation-wide cleantech business accelerator announced the semi-finalists that would participate in this year’s program. CTO has a hybrid competition/accelerator model and received 77 applications in the Northeast, 39 of which were selected to enter the accelerator.

“This is our largest and most diverse group of semi-finalists ever,” said Northeast Regional Director Alexandra Adler in a release. “In the coming months we look forward to delivering tremendous value to these young companies through our mentor program, workshops and networking, and hope to see all of these teams succeed, just as many of our alumni have before them.”

The regional finals will be held on October 9 in Boston. I’ve covered CTO and the challenges cleantech accelerators face here, and below we’ve listed the 19 Massachusetts semi-finalists. The full list of Northeast finalists is available here.

Intern Nick DeLuca contributed to this report.

Cleantech Open 2012 Northeast Semi-finalists from Massachusetts

Coincident

Energy Efficiency

Coincident builds residential automated energy management systems that optimize and reduce energy consumption.

CoolX

Transportation

Cool-X uses proprietary nanotechnology to improve oil performance; making it a better lubricant and heat conductor, which leads to a    reduction in oil and fuel consumption.

DIVYAENERGY

Renewable Energy

DIVYA is an online marketplace for solar panel installation,  connecting and empowering consumers with information to make    smart solar decisions  for homes and businesses.

DynamoMicropower

Energy Efficiency

Dynamo Micropower is developing a new prime mover using a proprietary ultra micro-turbine design. By being more energy efficient, fuel flexible, and needing little maintenance, this will allow oil and gas wells to be more fully utilized.

EasternWindPower

Renewable Energy

Eastern Wind Power designs and builds VAWT that are installed on buildings, bring wind power to urban areas.

EnergyCompression

Smart Power

Energy Compression is working to make Adsorption-Enhanced Compressed Air Energy Storage a viable commercial energy storage system.

EnergySage

Renewable Energy

EnergySage is a web portal for consumers seeking information about clean energy systems for their properties.

HYDRORECOVERY

Renewable Energy

HYDRORECOVERY has developed an in-building hydro electricity system to transform water that is used daily into a source of electricity.

Invisergy

Renewable Energy

Invisergy has developed a transparent, electricity generating window, which would be installed in commercial real-estate.

MetaCombInc.

Green Building

MetaComb Inc. has developed a unique process for reclaiming old corrugated cardboard into a versatile MetaComb building material.

MUSE Analytical

Energy Efficiency

MUSE Analytical is working to reduce building power consumption for high-risk buildings, such as laboratories and hospitals, through improved air quality sensors.

NBDNanotechnologiesInc.

Air, Water, & Waste

NBD is developing ways to use nanotechnology to create a sustainable method of collecting drinking water.

Power Ally

Smart Power

Power Ally is a online electricity brokering service that empowers residents to make the best energy choices by clarifying available plans and the trade-offs between price and renewable content.

SaveEnergySystems, Inc.

Energy Efficiency

Save Energy Systems is developing/marketing/selling an HVAC energy management system for small to medium sized facilities with numerous features to help manage and lower energy costs.

SolidEnergy

Transportation

SolidEnergy is developing cutting-edge lithium battery technologies that will improve safety and energy density in batteries for a range of uses.

TeamSolaBlock

Green Building

Team SolaBlock is creating a new approach to city energy production through the development of solar photovoltaic-clad concrete block.

TrentonFuelWorks

Air, Water, & Waste

TFW will produce renewable platform chemicals that can be utilized for a variety of applications including fuels, plastics, rubbers and pharmaceuticals.

VECARIUS, Inc.

Transportation

VECARIUS is working to enhance engine efficiency through exhaust waste heat recovery technologies.