The Spark Cleantech Accelerator is a highly specialized program helping early-stage cleantech startups develop their innovations and bring them to market. With a strong focus on hardware-based solutions that combat climate change, conserve resources, and promote energy efficiency, Spark provides a unique launchpad for cleantech entrepreneurs.
This guide breaks down everything founders need to know to get accepted into the Spark Cleantech Accelerator, from eligibility criteria and investment terms to tips for submitting a strong application.
Spark Cleantech Accelerator Overview
📍 Location: Knoxville, Tennessee
🕒 Program Duration: 12 weeks (In-person)
💸 Stipend: $15,000 (Equity-free)
💼 Equity Taken: None
🔬 Focus Areas: Hardware-based cleantech solutions (bioenergy, energy efficiency, fuel cells, carbon capture, advanced manufacturing, etc.)
The Spark Cleantech Accelerator was developed in partnership with Evergreen Climate Innovations, the University of Tennessee Research Park, and strategic collaborators like the Tennessee Valley Authority (TVA). The program is housed at the Institute of Advanced Materials and Manufacturing in Knoxville and provides lab and office space tailored to energy startups.
Who Should Apply? Eligibility Criteria
✅ Early-Stage Companies: From idea to prototype to first customers. Startups at various stages are welcome to the Spark Cleantech Accelerator.
✅ Cleantech Focus: Strong preference for hardware solutions, though software and advanced materials may also be eligible.
✅ TRL Level: Ideal applicants are between Technology Readiness Levels 2 to 6.
✅ Environmental Impact: Technologies should improve energy efficiency, support renewable energy, or reduce GHG emissions.
✅ Team Commitment: At least one team member must participate full-time in Knoxville for the entire 12 weeks.
✅ Tennessee Ties Preferred: Applicants planning to establish a business presence in Tennessee are prioritized.
✅ IP Protection: Strong preference for startups with defensible IP, including pending or issued patents.
Spark CleanTech Investment Terms
💰 Stipend Amount: $15,000, paid in two installments. Half is provided at the beginning of the program and the other half at the midpoint, contingent on performance.
🆓 No Equity Taken: Spark does not take equity from participating companies. Founders retain full ownership.
🎯 No Direct Investment, but:
- Exposure to TVA, ORNL, and potential pilot project partners
- Opportunity to pitch at Demo Day to investors, corporate partners, and VCs
- Past participants have secured millions in grant and equity funding post-program
What You’ll Get: Program Benefits
🌟 Mentorship
Access to senior mentors from the Spark Innovation Center, TVA, the Tennessee Advanced Energy Business Council, and more. Mentorship covers:
- IP strategy
- Product design & prototyping
- Market analysis & business modeling
- Fundraising & pitch practice
🛠️ Prototyping & Technical Support
Work with the UT Center for Materials Processing to refine hardware solutions with advanced prototyping services.
🏢 Facilities & Workspace
- Lab and office space in the UT Research Park
- Opportunities to collaborate with researchers and entrepreneurs on-site
📈 Curriculum Focus
The 12-week program covers four core pillars:
- Product
- Business Model
- Finance
- Pitch
Founders also choose a “minor” focus area:
- IP Strategy
- Brand Development
- Supply Chain Management
🤝 Networking Opportunities
- Meet potential customers, investors, and partners
- Participate in Demo Day and Investor Meetups
- Collaborate with corporate and government stakeholders
Application Insight
📋 What You’ll Need:
- Company & founder details
- Problem-solution overview
- Product development stage
- Environmental impact
- Financial plan & projections
- Stanford affiliation (if relevant)
- Pitch deck and 1-minute video (recommended)
🔍 Evaluation Criteria:
- Tech impact on energy, climate, or resource conservation
- Team dedication & capabilities
- Market potential & competitive advantage
- Tennessee business presence commitment
- Synergies with Spark partners like TVA & ORNL
Tips for a Winning Application
🌱 1. Emphasize Environmental Impact
Be specific about how your tech reduces emissions, increases energy efficiency, or supports sustainability.
🧠 2. Showcase IP and Defensibility
Mention any patents (issued or pending). Highlight your competitive moat.
🧑🤝🧑 3. Highlight a Committed Team
Show that at least one founder will be in Knoxville full-time and has relevant domain expertise.
📍 4. Tie to Tennessee
Explain how your startup can benefit from and contribute to the Tennessee cleantech ecosystem and Spark Cleantech accelerator.
📊 5. Prepare a Strong Pitch Deck
Include the problem, your solution, traction, team, and market opportunity.
📣 6. Align with Spark Partners
If your tech aligns with TVA’s energy grid, ORNL’s research, or municipal/government needs, highlight that.
📈 7. Demonstrate Market Opportunity
Support your value proposition with data. What’s your addressable market?
FAQs: Spark Cleantech Accelerator
❓ Where is the program held?
Knoxville, Tennessee at the UT Research Park.
❓ Is the program virtual?
No. It’s a fully in-person program.
❓ Does Spark take equity?
No. Spark is 100% equity-free.
❓ Who funds the stipend?
The $15K stipend is funded through program sponsors and paid in two halves.
❓ Is my tech too early-stage?
Spark accepts startups from idea to prototype and early revenue.
❓ Do I need IP to apply?
Not required, but strongly preferred.
❓ What happens after the program?
You pitch at Demo Day, connect with investors, and may engage in pilot projects.
❓ How many startups are accepted?
Up to 6 companies per cohort.
Final Thoughts on Getting Into Spark Cleantech Accelerator
If you’re building a cleantech startup with a meaningful environmental impact, Spark offers one of the most tailored support systems in the U.S. The combination of a $15,000 stipend, no equity, access to TVA, world-class mentors, technical prototyping, and Tennessee’s innovation network makes this an opportunity worth pursuing.
To stand out, ensure your application demonstrates environmental relevance, technical depth, and team commitment. Tie your growth plans to the Tennessee ecosystem and prepare a pitch that speaks to real-world impact and commercial potential.
With the right preparation, Spark Cleantech Accelerator can help take your climate-focused startup from concept to commercialization. 🌎⚡
