Smart Joules is a New Delhi-based energy efficiency company that cuts electricity use in hospitals, hotels and factories through IoT controls and a pay-as-you-save model.

This Startup Deep Dive explains what Smart Joules does, how it makes money, who backs it, how it compares with rivals and what could go wrong, using publicly available information. It is educational and not investment advice. Last updated: October 2026.

Smart Joules in Brief

• What it is: Smart Joules is an Indian Energy efficiency and cooling-as-a-service company based in New Delhi.
• Who it serves: businesses, institutions, consumers, learners and public-sector buyers.
• Installs sensors and controllers on HVAC, chillers, compressors, boilers and lighting, with software optimizing how they run.
• Offers DeJoule, an AI-powered building management system.
• Offers JoulePAYS, a pay-as-you-save model with no upfront cost to clients.
• Funding: Reports differ: about USD 18 million to USD 27 million across rounds.

Smart Joules Quick Facts

Figures marked “reported” come from published reports and may differ between sources; “Not disclosed” means no reliable public figure was found.

What Is Smart Joules?

Smart Joules operates in the Energy efficiency and cooling-as-a-service space in India. Understanding a company like this starts with three questions: who is the customer, what painful problem is being solved, and why the solution is better than the alternatives. The sections below apply that lens to Smart Joules.

• Installs sensors and controllers on HVAC, chillers, compressors, boilers and lighting, with software optimizing how they run.
• Offers DeJoule, an AI-powered building management system.
• Offers JoulePAYS, a pay-as-you-save model with no upfront cost to clients.
• Offers JouleCOOL, cooling-as-a-service for new buildings and central cooling, and JouleAIR for compressed air.
• Clients include Apollo Hospitals, ITC, Blackstone and Le Meridien, mainly in healthcare and hospitality.

The Origin Story of Smart Joules

Every company starts from a noticed gap and a team willing to commit to closing it. Strong origin stories are specific: a clear problem, a founding team with relevant skills, and an early product that real customers could test. Founder-market fit, meaning the team’s lived experience or technical depth in the domain, tends to predict how fast a young company learns.

• Founders: Arjun Gupta, Sidhartha Gupta, Ujjal Majumdar.
• Founded in 2014 by Arjun Gupta, Sidhartha Gupta and Ujjal Majumdar.
• Headquartered in Okhla Phase III, New Delhi.
• Spellings of the founders' names vary across sources.

Key Milestones and Challenges

No startup grows in a straight line. Early years usually involve slow adoption, product rewrites, hiring mistakes and funding gaps. In the Energy efficiency and cooling-as-a-service sector the common turning points are a first paying customer, a regulatory approval, a successful product demonstration or a funding round that lets the team invest ahead of demand. How a team responds to setbacks says more about resilience than any single headline.

• 2014: Company founded.
• 2021: Series A of about USD 4.1 to 4.9 million led by Raintree Family Office with ADB Ventures, Sangam Ventures and cKinetics.
• February 2024: Undisclosed round with Danish impact fund IFU (about USD 8 million per one aggregator).
• December 2025: USD 10 million Series B led by SVL SME Neev II Fund with Waaree Renewable Technologies and Spectrum Impact.
• Claimed impact: 32.1 crore kWh conserved, 2.4 lakh tonnes CO2 cut, Rs 266 crore energy costs saved.

Smart Joules Funding and Investors

Funding history shows how much outside confidence a company has attracted and how long it can operate before needing more capital. Figures below are reported and may differ between sources; valuation figures are estimates unless the company has confirmed them.

• March-April 2021: Series A about USD 4.1-4.9 million (reports differ), Raintree Family Office lead, with ADB Ventures, Sangam Ventures, cKinetics.
• February 2024: undisclosed round, IFU, about USD 8 million per one aggregator.
• December 2025: USD 10 million (about INR 90 crore) Series B, SVL SME Neev II Fund (SBI Ventures) lead, with Waaree Renewable Technologies and Spectrum Impact.

How Does Smart Joules Make Money? (Business Model)

A business model describes who pays, how often and how much it costs to serve them. Strong models show repeat usage, improving margins with scale and acquisition channels that do not depend only on paid spend. Weak models show one-off sales, rising costs and growth that stops when spending stops. For companies selling to businesses, institutions, consumers, learners and public-sector buyers, sales cycles and contract size matter as much as headline growth.

• Pay-as-you-save: Smart Joules funds retrofits and is repaid from a share of measured savings.
• After a five-year period, equipment ownership transfers to the customer at no extra cost.
• Cooling-as-a-service charges based on savings generated.
• Revenue comes from shared savings and service fees.

The Numbers: Smart Joules Financials

Financial figures show whether growth is turning into a self-sustaining business. Small and private companies often disclose little, so any number below is included only if it was found in public reporting.

• FY24 revenue: Rs 49 crore (up 29 percent); net loss Rs 91 lakh.
• FY25 revenue: about Rs 69.1 crore per one aggregator (up 40 percent); reported FY25 net loss about Rs 4.7 crore (reports differ with other figures on the same page).
• 56+ clients across India and Indonesia; average annual energy savings of 35 percent (company-stated).
• About 210 employees per LinkedIn data cited by one source.

Market Opportunity for Smart Joules

Market size is easy to exaggerate, so a useful approach separates the total market from the portion a company can realistically reach with its current product and distribution. The main forces behind demand in this sector are rising digital adoption, cloud and mobile penetration, growing enterprise technology spending, government digitisation programmes and a deep pool of engineering talent. Each of these widens the opportunity, but capital efficiency and execution decide who captures it.

• India's large commercial and industrial building base is a target for retrofit-based efficiency.
• Series B proceeds are earmarked for expansion into manufacturing, building automation and district cooling.

Technology and Product at Smart Joules

Technology is rarely the whole moat, but it drives speed, cost and customer experience. A practical way to assess it is to separate the capability the company controls from the commodity infrastructure it rents. In this sector the important factors are product quality, data and integration depth, security, scalability and the speed of shipping improvements.

• IoT sensors and controllers connected to HVAC, chillers, compressors, boilers and lighting.
• AI-driven optimization through DeJoule building management software.

Team and Culture at Smart Joules

Teams are the most important and least measurable asset of a young company. Look at how complementary the founders’ skills are, how deep the second layer of leadership is, and how the company hires and retains specialists. Culture shows up in small repeated behaviours: how quickly bad news travels upward and whether commitments to customers are kept.

• Arjun Gupta is CEO.
• About 210 employees per LinkedIn.

Smart Joules Competitors: Competitive Landscape

A fair competitive analysis names direct rivals, adjacent players who could move into the space, and the customer’s default alternative. Durable advantages include proprietary data or technology, licences and approvals, brand trust, switching costs and cost leadership.

Risks and Challenges for Smart Joules

• Asset-heavy pay-as-you-save model ties up capital until savings are realised.
• Reported losses despite revenue growth.
• Client concentration in healthcare and hospitality.
• Financial figures from aggregators conflict.
• Competition: low barriers to entry and well-funded rivals can compress pricing and slow growth.
• Funding risk: technology businesses often burn cash before reaching profit and depend on investor appetite.

Risk is not a reason to avoid a company; it is a reason to price it correctly and to monitor the right indicators over time. Regulation in this sector is shaped by data protection rules under the Digital Personal Data Protection Act, sector regulators, consumer protection law and IT rules.

Smart Joules Growth Outlook: What to Watch

• New Series B funds support expansion beyond healthcare and hospitality.
• Growth depends on scaling projects while managing capital intensity.
• Key indicators: recurring revenue, customer retention, gross margin, customer acquisition cost and runway.
• Funding position: Whether Smart Joules can reach its next milestone before needing new capital.
• Regulation: Changes from data protection rules under the Digital Personal Data Protection Act, sector regulators, consumer protection law and IT rules.

Industry Context: Where Smart Joules Fits

India's technology startup ecosystem is one of the largest in the world, supported by cheap data, a large base of smartphone users, digital public infrastructure and a deep engineering talent pool. Companies now build for education, software, mobility, logistics, agriculture, defence, media and more, selling both to Indian customers and abroad.

Durable technology companies usually combine a clear customer problem with repeatable distribution and disciplined unit economics. Growth funded only by spending tends to fade, while products that customers keep using and paying for build compounding advantages.

For readers new to this field, a useful habit is to separate announcements from evidence. A plan, a partnership or a funding headline describes intent, while a delivered product, a paying customer or an audited financial statement describes results. Comparing the two over time shows how reliably a company turns promises into outcomes.

Bull Case and Bear Case for Smart Joules

An investment thesis is a short, testable statement of why a company could become far more valuable, together with what evidence would prove it wrong. The points below are general to this sector and are not forecasts for Smart Joules.

Bull case

• A large and growing base of digital users and businesses expands the addressable market.
• Recurring revenue and strong retention can compound growth.
• Selling into global markets widens the opportunity beyond India.

Bear case

• Heavy competition can compress pricing and margins.
• Dependence on external funding can force painful cost cuts.
• Regulation or platform changes can disrupt a product quickly.

Lessons Founders and Investors Can Take from Smart Joules

Studying a company in the Energy efficiency and cooling-as-a-service space offers lessons that go beyond any single firm. The points below are general lessons for the sector and are not claims about Smart Joules.

• Solving a clear, frequent customer problem matters more than adding features.
• Retention and repeat usage are better health signals than sign-ups.
• Disciplined spending extends runway and keeps options open when funding tightens.
• Distribution, not just product quality, decides who wins in crowded markets.
• Building trust through data protection and reliability is part of the product.

How to Evaluate Smart Joules as a Startup

• Customer clarity: Can Smart Joules name its customer and the problem it solves in one sentence?
• Evidence of demand: Look for repeat customers, signed contracts or measurable usage rather than announcements alone.
• Economics: Check whether margins improve as volume grows.
• Execution: Compare announced timelines with what has actually been delivered.
• Funding runway: Estimate how long current capital lasts at the present spending rate.
• Regulatory standing: Confirm required approvals are in place.
• Customer concentration: Check whether a few customers account for most of the revenue.
• Management depth: Look for experienced leaders beyond the founders and a stable core team.

The Takeaway

Smart Joules is part of India’s growing Energy efficiency and cooling-as-a-service ecosystem. The useful lesson from studying it is the discipline of asking structured questions about customers, economics, advantage and resilience. Companies that answer them well, repeatedly and under pressure are the ones that endure. Readers should treat any single report, ranking or funding headline as one input among many, and should re-check key facts against recent company announcements. Because public information on young companies is often limited, patience in verifying claims is part of good analysis. Public sources can also describe the same company in different ways, so it is worth checking dates, definitions and whether a figure refers to revenue, total income or transaction value, and whether it covers one entity or a wider group, before drawing conclusions. Small differences in rounding, currency conversion or reporting periods can also change how a figure reads. Comparing the same figure across several recent reports helps show whether it is stable or has changed over time. This article is educational and is not investment advice.

• Clear customers and repeat demand matter more than announcements.
• Regulation and capital needs shape how fast a startup in this sector can grow.
• Track a few leading indicators over time rather than one headline metric.

Smart Joules FAQs: Frequently Asked Questions

What is Smart Joules?

Smart Joules is a New Delhi-based energy efficiency company that cuts electricity use in hospitals, hotels and factories through IoT controls and a pay-as-you-save model. It is profiled in the Startup Deep Dive series, which explains business model, funding, competitors and risks.

Who founded Smart Joules?

Smart Joules was founded by Arjun Gupta, Sidhartha Gupta, Ujjal Majumdar, and the company reports a founding year of 2014.

How much funding has Smart Joules raised?

Reports differ: about USD 18 million to USD 27 million across rounds. Funding figures are reported and may differ between sources, so readers should check the latest company announcements.

How does Smart Joules make money?

Smart Joules earns revenue from its Energy efficiency and cooling-as-a-service products and services sold to businesses, institutions, consumers, learners and public-sector buyers. The exact revenue mix is described in the business model section and is not fully disclosed publicly.

Who are the competitors of Smart Joules?

Reported rivals include 75F, Zenatix, Ecolibrium. See the competitor comparison above for how they differ.

What are the main risks for Smart Joules?

Main risks include competition: low barriers to entry and well-funded rivals can compress pricing and slow growth, funding and capital needs, competition and regulation by data protection rules under the Digital Personal Data Protection Act, sector regulators, consumer protection law and IT rules. This is educational content, not investment advice.

Related Startup Deep Dives: Univariety — Backed by Info Edge with about $3 million raised; FY25 revenue Rs 10.5 crore and net loss Rs 1.1 crore (tracker estimate) | Hala Mobility — FY26 operating revenue Rs 97 crore, up 4.4x from Rs 22 crore, with profit after tax of Rs 3.6 crore. Browse the full Startup Deep Dive series.

Source

Source: Publicly available data, published reports, industry research, and other credible sources.