Span.IO: Funding, Investors & Team (Aug 2026)
In 2018, Span.IO was established in San Francisco with the purpose of creating products that can facilitate the quick adoption of renewable energy and deliver a user-friendly interface for household use. Comprised of engineers who have a deep interest in creating environmentally-friendly products that can enhance the consumer experience, they believe that the development of intelligent hardware and software that can provide visibility and control in the outermost edges of the power grid can revolutionize the energy industry. With the support of experts in energy, software, hardware, and consumer finance, they draw upon their team's extensive collective experience in the field of energy generation, transformation, controls, and system integration to produce core products that support the swift adoption of renewable energy.
Span.IO has raised $501M across 6 funding rounds on record, the most recent an undisclosed round of $75.0M announced in Mar 2026.
That round is above the $15M median round size for Energy companies tracked on FundedIQ over the last two years.
Span.IO Company Profile and Key Stats
Latest funding round on record: Mar 2026.
Span.IO Funding Rounds
Span.IO raised $20.0M in a Series B announced in Jan 2021.
1 years later, an undisclosed round of $68.3M was announced in Jan 2022.
2 months later, a Series B of $90.0M was announced in Mar 2022.
1 years later, an undisclosed round of $84.0M was announced in Mar 2023.
2.8 years later, an undisclosed round of $163M was announced in Jan 2026.
2 months later, an undisclosed round of $75.0M was announced in Mar 2026.
Span.IO Founders and Leadership Team
Contact details for the Span.IO team: 1 of 1 has an email address on file.
Start 14-day free trial →Span.IO Funding Compared to Other Energy Startups
Span.IO's latest round of $75.0M is above the median round in Energy. Medians cover the last 24 months of disclosed rounds.
Funded Startups Like Span.IO in Energy and San Francisco
Companies Similar to Span.IO
Ampaire is at the forefront of the Third Aviation Revolution, creating aircraft that are…
Thea Energy is taking a faster approach to commercialize fusion energy. The company’s fusion systems will…
Form Energy develops and commercializes a low-cost battery system that can store wind and solar energy for a…
LevelTen Energy is a company that offers a platform for renewable energy buyers, sellers, and advisors to…
Zeno is developing next-generation radioisotope power systems that generate carbon-free, resilient power for…
Base Power is a contemporary energy company that focuses on backup battery systems for homes and electricity…
Valar Atomics is a company focused on scaling nuclear energy beyond the traditional electricity grid.
Antora Energy delivers zero-carbon industrial heat and power to heavy industries that are more reliable than…
Commonwealth Fusion is a research company that develops energy through an inexhaustible power plant. It uses…
Antares Industries is an advanced nuclear energy startup that designs and manufactures adaptable and scalable…
WATT Fuel Cell Corporation is a developer and manufacturer of Solid Oxide Fuel Cell (SOFC) components and…
Gritt Robotics is utilizing AI and Robotics to automate the construction of renewable energy projects.
Span.IO Funding FAQs
What does Span.IO do?
In 2018, Span.IO was established in San Francisco with the purpose of creating products that can facilitate the quick adoption of renewable energy and deliver a user-friendly interface for household use. Comprised of engineers who have a deep interest in creating environmentally-friendly products that can enhance the consumer experience, they believe that the development of intelligent hardware and software that can provide visibility and control in the outermost edges of the power grid can revolutionize the energy industry. With the support of experts in energy, software, hardware, and consumer finance, they draw upon their team's extensive collective experience in the field of energy generation, transformation, controls, and system integration to produce core products that support the swift adoption of renewable energy.
How much funding has Span.IO raised?
Span.IO has raised $501M across 6 rounds on record. The most recent is an undisclosed round of $75.0M announced in Mar 2026.
When did Span.IO last raise funding?
Span.IO's most recent funding round on record is an undisclosed round of $75.0M, announced in Mar 2026.
Who is the CEO of Span.IO?
Arch Rao is listed as CEO at Span.IO.
Where is Span.IO headquartered?
Span.IO is based in San Francisco, California, United States.
How many employees does Span.IO have?
Span.IO is in the 101-250 employee band.
How does Span.IO's funding compare to other Energy startups?
Span.IO's latest round of $75.0M is above the $15M median round size for Energy companies on FundedIQ across 2,284 tracked companies over the last two years.
About FundedIQ's Span.IO Funding Data
FundedIQ tracks announced funding rounds and refreshes this profile every week. Round dates, stages and amounts are normalised to a single format, converted to US dollars, and de-duplicated: two records of the same round announced days apart are merged, and two genuinely different rounds are kept apart on the amounts they disclose. Amounts shown are the disclosed figures only — a round announced without a number is listed and excluded from the total rather than estimated.
Employee counts are reported bands, not exact headcounts. Founder and executive names carry the job title on record. Anything we do not hold for Span.IO is left off this page rather than filled in.
Know who just raised. Then know who to reach.
Every newly funded startup with its round, its investors and its founders: delivered weekly by email, or searchable in the app.
Alerts from $19/mo · Pro from $99/mo. Card required, nothing charged until day 15, and we email you 3 days before that.