# MassChallenge's Energy Investments: 11 Startups in Its Portfolio (2026)

> The 11 Energy startups MassChallenge has backed, by stage: $52M raised between them. From the rounds we track; updated nightly.

Source: https://millionrounds.com/portfolio-maps/masschallenge-energy-portfolio (Millionrounds; every figure on the page links to its filing or article)

## Stage not reported

7

- [Arborea](https://millionrounds.com/company/arborea)
- [Akselos](https://millionrounds.com/company/akselos)
- [Yotta Energy](https://millionrounds.com/company/yotta-energy)
- [C2C NewCap](https://millionrounds.com/company/c2c-newcap)
- [Element 16 Technologies](https://millionrounds.com/company/element-16-technologies)
- [*DM* Dynamo Micropower](https://millionrounds.com/company/dynamo-micropower)
- [OffGridBox](https://millionrounds.com/company/offgridbox)

## Pre-seed and seed

2

- [SolidWatts](https://millionrounds.com/company/solidwatts)
- [AMS-Qi](https://millionrounds.com/company/ams-qi)

## Series A

2

- [Sourcewater](https://millionrounds.com/company/sourcewater)
- [Polybion](https://millionrounds.com/company/polybion)

## Segment by segment

### Stage not reported

7 startups · $38M raised

- [**Arborea**](https://millionrounds.com/company/arborea) Arborea is a London-based biotechnology company founded in 2015, focused on industrializing photosynthesis to produce sustainable United Kingdom $11M
- [**Akselos**](https://millionrounds.com/company/akselos) Akselos is a developer of digital twin technology designed to protect critical infrastructures. Switzerland $10M
- [**Yotta Energy**](https://millionrounds.com/company/yotta-energy) Yotta Energy is a renewable energy technology company based in Austin, Texas, founded in 2016. United States $8.0M
- [**C2C NewCap**](https://millionrounds.com/company/c2c-newcap) C2C-NewCap is a Portuguese deep-tech company based in Odivelas, Lisbon, specializing in hybrid supercapacitors for eco-friendly en Portugal $6.2M
- [**Element 16 Technologies**](https://millionrounds.com/company/element-16-technologies) Element 16 Technologies is a cleantech company based in Southern California, founded in April 2016. United States $1.4M
- [*DM* **Dynamo Micropower**](https://millionrounds.com/company/dynamo-micropower) Dynamo Micropower develops a turbine based power solution (50HP) for the oilfield that provides grid-like power quality while saving money. United States $721K
- [**OffGridBox**](https://millionrounds.com/company/offgridbox) OffGridBox is a technology company founded in 2016, dedicated to providing affordable clean water and renewable energy to remote, United States $13K

### Pre-seed and seed

2 startups · $2.4M raised

- [**SolidWatts**](https://millionrounds.com/company/solidwatts) SolidWatts is a Swiss startup established in 2022, specializing in deeptech and greentech solutions for industrial process heating. Switzerland $2.3M
- [**AMS-Qi**](https://millionrounds.com/company/ams-qi) AMS-Qi is a company helping increase electricity generation efficiency. United States $50K

### Series A

2 startups · $12M raised

- [**Sourcewater**](https://millionrounds.com/company/sourcewater) Sourcewater offers the largest online water source, reuse, and disposal database in the upstream energy industry. United States $7.2M
- [**Polybion**](https://millionrounds.com/company/polybion) Polybion is a biotechnology startup based in Irapuato, Guanajuato, Mexico, with a corporate presence in Madrid, Spain. Mexico $4.8M

**How this map is made.** Every startup here works in Energy and has raised money in a round we track that names MassChallenge as an investor. Each sits under the stage of its latest round. Rebuilt nightly; updated 15 November 2026.

## More portfolio maps

[All portfolios](https://millionrounds.com/portfolio-maps)

[Sector portfolio **MassChallenge's Healthtech portfolio** 77 startups · $395M](https://millionrounds.com/portfolio-maps/masschallenge-healthtech-portfolio)[Sector portfolio **MassChallenge's Biotech portfolio** 68 startups · $1.2B](https://millionrounds.com/portfolio-maps/masschallenge-biotech-portfolio)[Sector portfolio **MassChallenge's AI portfolio** 58 startups · $2.0B](https://millionrounds.com/portfolio-maps/masschallenge-ai-portfolio)[Sector portfolio **MassChallenge's Agtech portfolio** 28 startups · $72M](https://millionrounds.com/portfolio-maps/masschallenge-agtech-portfolio)[Sector portfolio **MassChallenge's Big Data & Analytics portfolio** 25 startups · $91M](https://millionrounds.com/portfolio-maps/masschallenge-big-data-analytics-portfolio)[Sector portfolio **MassChallenge's Hardware & Electronics portfolio** 21 startups · $233M](https://millionrounds.com/portfolio-maps/masschallenge-hardware-electronics-portfolio)

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