Want to make a difference and have fun?  Whether you're an expert programmer, have never coded before, or just have a great idea or an interest in energy and resource efficiency, come join us for the fourth annual Boston Cleanweb Hackathon.

Hosted by the Massachusetts Clean Energy Center in partnership with Greentown Labs, the Boston Cleanweb Hackathon is a weekend-long technology challenge. Teams will compete for cash prizes in an effort to create user-friendly web and mobile applications designed to help consumers and businesses use energy and natural resources more efficiently.

The competition takes place at WeWork's South Station location on Friday evening with a team formation mixer and challenge presentations. Coding begins Saturday morning and participants will have 30 hours to form teams and create an application that addresses energy, waste, water, transportation, food or other energy and sustainability issues. We wrap up on Sunday afternoon with pitches to a panel of judges and awards.

WeWork is located at 745 Atlantic Ave. in Boston by South Station and is easily accessible by MBTA red line, bus or commuter rail. 


Friday, April 10th

6:00 PM - 8:30 PM | Hackathon Kickoff Mixer

Saturday, April 11th 

8:00 AM - 8:30 AM | Breakfast & Registration

8:45 AM | Welcome and Introduction

9:00 AM - 10:00 AM | Brainstorming Session (led by EnerNOC and Code for Boston)

10:00 AM | Quick Break and Team Check-In

10:30 AM | D3 Workshop 

11:30 - 2:00 PM | Code for Boston Resource Desk

12:00 PM | Lunch

12:00 PM - 1:30 PM | Workshops

1:30 PM - 3:00 PM | Office Hours with MassGIS

3:00 PM | Team Name Sumbissions Due!

6:00 PM | Dinner

9:00 PM | WeWork closes for the day - rest up and come back ready to hack on Sunday!

Sunday, April 12th

9:00 AM - 2:00 PM | Race to the finish! Submissions are due by 2:00 PM sharp.

2:00 PM - 3:30 PM | Pitches

3:30 PM - 4:00 PM | Judge Deliberations & Awards Ceremony

4:20 PM - 4:30 PM | Haccelerator Kickoff


Thank you to our sponsors and partners for your support!


Energy Innovation Centre 

National Grid 





Mass Tech Collaborative

Mass Big Data



Greentown Labs (Founding Partner)


New England Clean Energy Council

Cleantech Open Northeast

Clean Energy Venture Group

Metropolitan Area Planning Council

Green Button Alliance


Code for America

MIT Clean Energy Prize





The Hackathon is open to everyone 18 years or older (unless accompanied by an adult). You can come with a team already formed or build a team during the weekend. Participants must appear in person to pitch his or her project in person at the judging event on Sunday.  

If you are an entrepreneur and you want to do work on behalf of your company, you are welcome to join us for the weekend, but pre-existing companies/solutions are not eligible for cash prizes.



Submissions must be received in person by 2pm ET on Sunday, April 12.

After all entries are submitted, teams will each do a short pitch in front of the judges, which will include a short Q&A session.

Your pitch should excite the judges and relay to them a good undrestaning of how your app works.  Ideally you will present a fully functioning app, but if your team isn't quite there yet you can show the judges how your app will function and what else you will need to get it there.

Apps will be judged on a range of criteria such as originality, sustainability, feasibility, etc.

Hackathon Sponsors


$11,000 in prizes

First Place

Second Place

Third Place

Crowd Favorite

Devpost Achievements

Submitting to this hackathon could earn you:

How to enter

Entry is easy! If you haven't already, head over to our EventBrite page, select your ticket type and register! The Boston Cleanweb Hackathon is free for all participants. 

The next step is to create a ChallengePost account and register for the Boston Cleanweb Hackathon to get access to all the details. We'll keep you up to date here on rules, judging criteria, and any other important information. 

We look forward to seeing you on April 10th at WeWork! 



Judges to Follow!

Judges to Follow!

Judging Criteria

  • Concept
    What's the idea? How does it work?
  • Sustainability
    What are the benefits in terms of environmental sustainability and efficient use of resources?
  • Impact
    Does it tackle a major problem or respond to a key industry need? Does it have the potential to change user behavior or make an impact on resource use?
  • Functionality
    Does it work? What has the team been able to accomplish over the course of the weekend? An OK product is much better than a really great PowerPoint deck.
  • Originality
    Is this something we've seen or heard before? Is it an update or a retread of something else, or is this entirely new?
  • Design
    How does it look? Has the team put thought into the user interface? Is it fun or attractive to look at?

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