US Competition

Finalists & SemiFinalists

Thursday 10/26:
Winner and Runner-Up Announced
Congratulations to

Winner:  Tyfast
Runner-Up:  Active Surfaces
People's ChoiceActive Surfaces

The US National Winner receives a $50,000 SAFE Note Prize.

From the 95 startups graduating the 2023 US Accelerator, two major regional pitch competitions whittled the companies to Regional Winners and Runners-Up who became the Top 18 National Semifinalists.


A unique aspect of Cleantech Open's nonprofit mission is that we work deeply with and "level up" all entrepreneurs going through our 6 month program - and then run competitions at the end


This is in contrast to many other accelerators that sometimes brag about accepting only a tiny fraction of applicants (just like Harvard!) and then work with just 5-10 companies per cohort. We work with 100+ - therefore building a huge cadre of better-skilled entrepreneurs, whether to benefit their current CTO venture or future ventures.

Go to the Global Ideas for our international competition.

Wednesday 10/25/2023:

Top 6 US National Finalists Pitch at Global Forum
(open, public pitch sessions at Marriott):

Active Surfaces (Energy Generation, Northeast)

Benchmark Labs, Inc. (Ag, Water & Waste, West)

Build Smartr Robotics (Green Building, Pacific Northwest)

Cleonmaye Corp. (Energy Efficiency, Northeast)

Solvari / Formerly TECSI Solar Inc. (Energy Generation, West)

Tyfast (Energy Distribution & Storage, West)


Tuesday 10/24/2023:

Top 18 US National Semifinalists Pitch at Global Forum
(these are private pitch sessions):

Active Surfaces (Energy Generation, Northeast)

Benchmark Labs, Inc. (Ag, Water & Waste, West)

Brevian Energy (Energy Distribution & Storage, West)

Build Smartr Robotics (Green Building, Pacific Northwest)

CarbonBright (Information & Communications Technologies, Pacific Northwest)

Cleonmaye Corp. (Energy Efficiency, Northeast)

Ellexco (Energy Generation, Northeast)

ergSol (Energy Generation, West)

GreenIRR Inc (Transportation, Northeast)

Power 3D (Energy Distribution & Storage, Northeast)

Prezerv Technologies (Energy Efficiency, Northeast)

Rivieh (Energy Efficiency, West)

Shred Electric (Transportation, Northeast)

Solvari / Formerly TECSI Solar Inc. (Energy Generation, West)

SPACESENSE (Ag, Water & Waste / ICT, Northeast)

Tyfast (Energy Distribution & Storage, West)

Vayve Mobility (Transportation, West)

Zinco Verde (Chemicals & Advanced Materials, Northeast)

See details about All 2023 Companies

Regional Winners:

Competed September 2023

Amply Energy (NE) *

Benchmark Labs, Inc. (West)

Build Smartr Robotics (PNW)

CarbonBright (PNW)

Ellexco (NE)

Hawk Spider Energy Corp. (RM) *

Rivieh (West)

Solvari (West)

SPACESENSE (NE)

Tyfast (West)

Vayve Mobility (West)

Zinco Verde (NE)


For the Northeast, read the CTONE Press Release about their regional event, additional prizes and mentor / volunteer recognitions just held in September.

(*) Not all Regional Winners are competing at Global Forum - primarily due to their unavailability.