Joules Accelerator
Climate & Energy · Run by Joules Accelerator (industry-supported nonprofit) · Charlotte, NC
Every field is checked against a primary source where we can. How we verify.
The facts
All fields verified Oct 1, 2026- Terms model
- Equity-freeProvides support with no cash invested and no equity taken.
- Investment
- Not publishedSite states 'All services are offered to startups at no charge.' No equity terms and no investment amount are published. A 90-day (three-month) program; Joules runs two cohorts of six advanced grid startups per year and looks for pre-seed to Series A startups at Technology Readiness Level 4 to 8. Cohort 17 was announced at Future Grid 26 and kicked off August 17, 2026. Cohort 18 applications are open through November 30, 2026 via an online application (under 20 minutes); a shortlist of 25 applications is shared with Joules' network, which selects six, and Cohort 18 will be announced by the end of 2026 and kick off in early 2027.
- Equity taken
- Not publishedSite states 'All services are offered to startups at no charge.' No equity terms and no investment amount are published. A 90-day (three-month) program; Joules runs two cohorts of six advanced grid startups per year and looks for pre-seed to Series A startups at Technology Readiness Level 4 to 8. Cohort 17 was announced at Future Grid 26 and kicked off August 17, 2026. Cohort 18 applications are open through November 30, 2026 via an online application (under 20 minutes); a shortlist of 25 applications is shared with Joules' network, which selects six, and Cohort 18 will be announced by the end of 2026 and kick off in early 2027.
- Program length
- 13 weeks
- Format
- Hybrid
- Location
- Charlotte, NC
- Cohorts per year
- 2
- Cohort size
- 6 per cohort
- Stage focus
- pre-seed to Series A, TRL 4 to 8
- Sub-vertical
- grid technology / utility cleantech
- Demographic focus
- Not published
- Backers
- Duke Energy, Honeywell, NC cleantech ecosystem partners
- Notable alumni
- Harvest Thermal
Terms notes: Site states 'All services are offered to startups at no charge.' No equity terms and no investment amount are published. A 90-day (three-month) program; Joules runs two cohorts of six advanced grid startups per year and looks for pre-seed to Series A startups at Technology Readiness Level 4 to 8. Cohort 17 was announced at Future Grid 26 and kicked off August 17, 2026. Cohort 18 applications are open through November 30, 2026 via an online application (under 20 minutes); a shortlist of 25 applications is shared with Joules' network, which selects six, and Cohort 18 will be announced by the end of 2026 and kick off in early 2027.
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Terms in plain English
Joules is a 90-day accelerator for advanced grid startups, and its site states that all services are offered to startups at no charge. It does not advertise a cash investment, and it does not publish any equity terms. The offer is advising on financial and business models plus connections to utilities and large energy customers for pilots and revenue opportunities, backed by a 500+ advisor network. Applying means completing an online application that Joules says takes less than 20 minutes; a shortlist of 25 applications goes to Joules' network, which selects six startups for each cohort.
Who this is actually for
Pilot-ready gridtech and utility cleantech startups that want a route into utility partners such as Duke Energy and the Charlotte energy ecosystem. It fits if you have a product ready to deploy or demonstrate with large energy customers rather than an idea-stage concept.
Joules Accelerator application deadlines
Frequently asked questions
- When is the next Joules Accelerator application deadline?
- The next confirmed application window for Joules Accelerator closes Nov 30, 2026.
- How much does Joules Accelerator invest?
- Joules Accelerator does not publish an investment amount, so we record it as not published.
- How much equity does Joules Accelerator take?
- Joules Accelerator does not publish the equity it takes, so we record it as not published.
- Where is Joules Accelerator located and is it in person?
- Joules Accelerator is based in Charlotte, NC and runs a hybrid program.
- Is Joules Accelerator still active?
- As of our last check on Oct 1, 2026, Joules Accelerator is active.
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Sources
Everything above was checked against these, verified Oct 1, 2026.