Tera Energy
Tera Energy is a private Kyoto-based electricity retailer, founded in 2018 by three Buddhist monks, that supplies Japanese residential and corporate customers with >75% renewable electricity and automatically donates up to 2.5% of monthly bills to 170+ certified non-profit organizations.
- Company typePrivate
- Founded2018
- HeadquartersKyoto, Japan
- Headcount—
- GTM typeB2C
- OfferingServices
What Tera Energy does
Tera Energy (TERA Energy CO., LTD., テラエナジー) is a privately held Japanese electricity retailer founded in Kyoto in 2018 by three Buddhist monks. The company operates in Japan's deregulated retail electricity market, supplying electricity sourced from solar, wind, biomass, and other renewables, with over 75% of its supply mix coming from renewable energy — above the Japanese national average. Its distinguishing mechanism is a built-in charitable donation feature: up to 2.5% of each customer's monthly bill is donated, at no additional cost to the customer, to one of 170+ certified recipient organizations (ほっと資産団体) covering welfare, environment, education, human rights, and regional revitalization.
The company's single core product is a residential and corporate electricity supply contract (テラエナジーでんき), structured around two pricing plans — a market-linked (JEPX-tied) plan and a fixed-price plan. As of August 2026, the fixed-price plan has been discontinued due to market price volatility, leaving the market-linked plan as the sole offer. Acquisition is web-first and self-serve, with a 5–10-minute online signup and Tera Energy handling all cancellation procedures with the customer's previous utility. Marketing is built around a note.com blog, a weekly podcast (Osatori Radio), crosstalk interview articles, and community event booths. As of March 2026, the company reports 1,931 supporters and ¥56,663,950 in cumulative donations distributed since founding.
Revenue mechanics follow a subscription/recurring model: monthly electricity billing to individual residential and corporate customers at rates comparable to or lower than major utilities, with Tera Energy funding the donation pool out of its own revenue margin. The company operates as a small, mission-driven private entity with no disclosed parent, institutional funding rounds, patents, or AI/ML capabilities; its core differentiators are narrative (Buddhist mission), renewable energy mix, and the embedded donation mechanic rather than proprietary technology.
Tera Energy firmographics
Firmographics- Name
- Tera Energy
- Legal name
- TERA Energy CO., LTD.
- Website
- https://tera-energy.com
- Company type
- Private
- Founded year
- 2018
- Operating status
- Operating
- Short description
- Tera Energy is a private Kyoto-based electricity retailer, founded in 2018 by three Buddhist monks, that supplies Japanese residential and corporate customers with >75% renewable electricity and automatically donates up to 2.5% of monthly bills to 170+ certified non-profit organizations.
- Ownership category
- akta.pro rank
Where Tera Energy is headquartered
LocationHeadquarters
- HQ city
- Kyoto
- HQ country
- Japan
- HQ region
- Asia
Offices1 record
Markets served
Tera Energy business model
Business model- GTM type
- B2C
- Offering type
- Services
- Cost components
- Operations, Supply Chain, Personnel, Marketing or Sales, Technology or R&D, Infrastructure
Revenue model
- Electricity supply revenue: Monthly electricity billing to residential and corporate customers. Customers pay standard electricity rates comparable to or potentially lower than major power companies. Tera Energy uses its own revenue to fund the donation contributions to designated organizations — no additional cost is passed to customers.
Pricing tiers
| Model | Billing | Price |
|---|---|---|
| Usage-based | Monthly | Market-linked plan (市場連動プラン) — recommended for customers motivated to save through energy-conscious usage |
| Subscription | Monthly | Fixed-price plan (固定単価プラン) — recommended for customers who prefer price stability |
Go-to-market motion2 records
Distribution channels4 records
Marketing channels5 records
Tera Energy product offering
Product offeringCore offering
Tera Energy is a Japanese electricity retailer that supplies power (with over 75% sourced from renewable sources) and automatically routes up to 2.5% of each customer's monthly bill to one of 170+ certified charitable organizations chosen by the customer. Customers switch their electricity provider through a ~10-minute web signup, and Tera Energy handles cancellation with their prior provider at no additional cost to the customer.
Product overview
Tera Energy operates as an electricity retail company offering a single core product called 'テラエナジーでんき', combined with a charitable donation mechanism. The service provides two pricing structures—a market-linked plan and a fixed-price plan (now being discontinued). Customers choose from over 170 certified 'ほっと資産団体' organizations to receive automatic donations from their electricity bills. The company sources over 75% of its electricity from renewable energy sources.
Differentiator
Problem solved
Functional benefit
Products and services
- Tera Energy Denki (テラエナジーでんき) Retail electricity supply service for residential (low-voltage) and corporate (high-voltage) customers in Japan that automatically donates up to 2.5% of each customer's monthly electricity bill to a customer-selected certified charitable organization from a network of 170+ groups, with no additional procedures or cost to the customer. The supply mix exceeds 75% renewable energy (solar, wind, biomass).
Quantifiable outcome
- 1,931 supporters as of March 2026
- +2 more outcomes
Companies that use Tera Energy
Customer profileNamed customers3 records
Segments3 records
Ideal customer profiles2 records
Tera Energy technology and API
TechnologyTechnology focussed No
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Tera Energy partnerships and signals
Strategic signalScale indicators6 records
Recent moves6 records
Expansion highlights4 records
Tera Energy competitors and assessment
Company assessmentDirect peers
- Looop (Looop Denki): Looop Denki is a Japanese renewable-energy focused power retailer (PPS) serving residential and business customers with a self-serve web signup, comparable to Tera Energy's core offering. Both operate as smaller, mission-oriented challengers inside Japan's deregulated electricity market, supplying renewably-sourced power over the public T&D network.
- Shizen Energy (自然エネルギー): Shizen Energy is a Japanese renewable energy developer and PPS retailer supplying solar, wind, and other renewables to end customers via Japan's deregulated market. Comparable to Tera Energy in sourcing from multiple renewables and serving both residential and corporate customers under a renewable-first proposition.
- Minna Denryoku (みんな電力): Minna Denryoku is a Japanese renewable electricity retailer built on a mission-driven, traceability-focused model ("who produces your power") serving residential and corporate customers. It is the closest direct analogue to Tera Energy in combining renewable energy retail with a strong social/purpose narrative in the Japanese market.
Broad incumbents
- SoftBank Denki: SoftBank Denki is the electricity retail arm of SoftBank, serving residential customers in Japan with discounted electric plans often bundled with telecom. It competes for the same residential customer base as Tera Energy but with massive telecom-driven distribution and pricing power.
- ENEOS Denki: ENEOS Denki is the electricity retail arm of ENEOS, one of Japan's largest energy companies, offering discounted electric power to residential and corporate customers nationwide. It is a broad incumbent that competes directly with Tera Energy in the same deregulated retail market but with vastly larger scale and brand.
- Tokyo Gas Electricity Retail: Tokyo Gas sells electricity to Japanese residential and business customers, leveraging its incumbent gas-utility customer base. It is a broad incumbent competing in the same retail electricity market as Tera Energy, particularly for combined utility customers.
- au Denki (KDDI): au Denki is KDDI's electricity retail service for residential customers in Japan, often bundled with mobile/telecom services for combined discounts. It is a broad incumbent competitor in the same Japanese deregulated retail market with substantial acquisition leverage from KDDI's telecom customer base.
Regional players
- Meridian Energy: Meridian Energy is a New Zealand-based renewable electricity generator and retailer (including community-oriented retail brands) serving residential and business customers. Conceptually comparable to Tera Energy in combining renewable generation, retail supply, and a community/social mission lens, though operating in a different geography.
- Good Energy (UK): Good Energy is a UK-based renewable electricity supplier with a strong social and environmental mission and community-owned generation roots, serving residential and business customers. Conceptually comparable to Tera Energy in combining mission-driven branding with renewable electricity supply, though operating in the UK rather than Japan.
- Ecotricity (UK): Ecotricity is a UK green electricity supplier famously built on environmental and social purpose, including renewable generation and customer-funded green initiatives. Comparable to Tera Energy in pioneering a values-driven, renewable-focused electricity retail proposition, though operating in the UK.
Market position
Strengths5 records
Weaknesses5 records
Competitive moat3 records
Key risks5 records
Key highlights7 records
Customer concentration
Tera Energy social profiles
Digital presenceTera Energy financial estimates
Financial estimateRevenue estimate
Valuation estimate
Tera Energy leadership team
Management profileNumber of profiles
Tera Energy funding detail
Funding detailFunding overview
Funding rounds
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
Tera Energy M&A and investment
M&A and investmentM&A
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about Tera Energy
What does Tera Energy do?
Tera Energy is a Japanese electricity retailer that supplies power (with over 75% sourced from renewable sources) and automatically routes up to 2.5% of each customer's monthly bill to one of 170+ certified charitable organizations chosen by the customer. Customers switch their electricity provider through a ~10-minute web signup, and Tera Energy handles cancellation with their prior provider at no additional cost to the customer.
Is Tera Energy a public or private company?
Tera Energy is a private company. It is classified as founder individual operated bootstrapped and is currently operating.
When was Tera Energy founded?
Tera Energy was founded in 2018.
Where is Tera Energy based?
Tera Energy is headquartered in Kyoto, Japan, in the Asia region.
How does Tera Energy make money?
One revenue line is on record: electricity supply revenue.
Who are Tera Energy's main competitors?
Direct peers on record are Looop (Looop Denki), Shizen Energy (自然エネルギー) and Minna Denryoku (みんな電力). Broad incumbents are SoftBank Denki, ENEOS Denki, Tokyo Gas Electricity Retail and au Denki (KDDI). Regional players are Meridian Energy, Good Energy (UK) and Ecotricity (UK).
Does Tera Energy have an API?
No public API is recorded for Tera Energy.