Building a cleantech startup in Singapore means navigating capital-intensive R&D, long development cycles, equipment investments, and increasingly stringent sustainability reporting requirements. The Singapore government grants that usually make sense for cleantech companies focus on R&D tax benefits, green manufacturing equipment, sustainability transformation, and deep tech validation.
This guide is written for cleantech founders who want clarity fast:
- Which grant matches your stage and challenge (R&D, equipment, transformation, validation)
- What it can fund (and what it won’t)
- The steps to apply without getting rejected for timing/eligibility reasons
Best-Fit Grants for Cleantech Startups
Start Here (Quick Pick)
- You’re investing in R&D (developing new green tech, sustainable materials, carbon capture processes) → EIS (Enterprise Innovation Scheme)
- You’re buying manufacturing equipment (energy-efficient production equipment, clean manufacturing systems) → EEG (Energy Efficiency Grant)
- You’re doing a larger sustainability transformation (green product development, circular economy model, carbon reduction initiative) → EDG (Enterprise Development Grant)
- You’re validating deep cleantech (proof-of-concept for proprietary technology, early-stage tech startup) → Startup SG Tech
- You need sustainability reporting software (ESG tracking, carbon accounting, compliance tools) → PSG (Productivity Solutions Grant)
Eligibility & Timing Rules
- Apply before you pay or sign. Deposits, invoices, or signed contracts before submission can make you ineligible (EDG, EEG, Startup SG Tech).
- EIS is a tax scheme, not a grant. Claim via IRAS after incurring expenses (no pre-approval needed).
- Startup SG Tech requires proprietary technology. Must have IP ownership and commercial potential.
- EEG equipment must be pre-approved (Base Tier). Check the equipment list before purchasing.
Top Grants for Cleantech Startups
1) Enterprise Innovation Scheme (EIS)
Use EIS when: you’re investing in R&D to develop new cleantech products, processes, or sustainable materials.
Good fit examples
- Renewable energy R&D (solar efficiency improvements, energy storage systems, grid integration technology)
- Carbon capture technology (direct air capture, carbon mineralization, CO2 utilization processes)
- Sustainable materials development (biodegradable polymers, recycled material formulations, bio-based alternatives)
- Circular economy innovation (waste-to-resource processes, product lifecycle optimization, recycling technology)
- Green manufacturing processes (low-emission production methods, water recycling systems, clean synthesis routes)
- Patent and IP registration (protecting your cleantech innovations)
How much
- 400% tax deduction on first S$400,000 qualifying R&D expenses
- 250% tax deduction on next S$200,000 qualifying expenses
- Cash payout option: Convert up to S$100,000 of expenses into S$20,000 cash (20% conversion rate) — useful for loss-making startups
- Valid from YA 2024 to YA 2028
When
- Claim after incurring expenses (not pre-approval)
- File with your annual tax return via IRAS
- No upfront application required
How (fast path)
- Track all qualifying R&D expenses with proper documentation (invoices, time sheets, project records).
- Categorize expenses: R&D activities, IP registration, innovation projects, training.
- File claims via mytax.iras.gov.sg with your annual tax return.
- Choose tax deduction OR cash payout (cannot claim both for same expense).
Where
- See more: Enterprise Innovation Scheme (EIS)
2) Energy Efficiency Grant (EEG)
Use EEG when: you’re purchasing energy-efficient equipment for cleantech manufacturing.
Good fit examples
- High-efficiency motors and drives (IE3/IE4 motors, variable frequency drives for production equipment)
- Energy-efficient cooling systems (efficient chillers for temperature-controlled processes)
- LED lighting systems (factory and lab lighting upgrades)
- Efficient heating equipment (industrial furnaces, ovens with improved insulation)
- Compressed air systems (VFD compressors for pneumatic operations)
- Waste heat recovery (capture and reuse thermal energy from processes)
How much
- Base Tier: Up to S$30,000, with 70% support for SMEs (valid until 31 Mar 2026)
- Advanced Tier: Up to S$350,000 (for large-scale projects with 350+ tonnes CO2 lifetime savings)
When
- Apply before purchase or installation
- Processing time: ~6 weeks
- Cannot sign contract or make payment before application
How (fast path)
- Check the EEG equipment list on GoBusiness for pre-approved equipment.
- Get vendor quotes showing equipment specifications and efficiency ratings.
- For Advanced Tier: prepare carbon savings assessment (350+ tonnes CO2 lifetime abatement).
- Submit via BGP (Business Grants Portal).
Where
- See more: Energy Efficiency Grant (EEG)
3) Enterprise Development Grant (EDG)
Use EDG when: you’re implementing a larger sustainability transformation project (green product development, circular economy business model, carbon reduction initiative).
Good fit examples
- Green product development (sustainable product design, eco-friendly material substitution, lifecycle assessment)
- Circular economy transformation (closed-loop manufacturing, product-as-a-service model, recycling infrastructure)
- Carbon reduction projects (process optimization for emissions reduction, renewable energy integration)
- Sustainability certification (ISO 14001, B Corp, industry-specific green certifications)
- Clean manufacturing automation (automated systems that reduce waste and energy consumption)
- Supply chain sustainability (green supplier development, sustainable sourcing, traceability systems)
How much
- Up to 70% co-funding for sustainability projects (until 31 Mar 2026)
- Up to 50% co-funding for standard projects
- No funding cap — projects typically range from S$50,000 to S$1 million+
- Processing time: 8–12 weeks
When
- Apply before starting the project
- Requires detailed project plan with timeline and outcomes
- Cannot start work before Letter of Offer
How (fast path)
- Define your sustainability transformation project (what problem, what outcome, what timeline).
- Get vendor quotes for consultancy, equipment, and implementation costs.
- Prepare project proposal with clear sustainability outcomes (carbon reduction, waste reduction, energy savings).
- Submit via BGP with supporting documents and financial statements.
Where
- See more: Enterprise Development Grant (EDG)
4) Startup SG Tech
Use Startup SG Tech when: you’re a deep cleantech startup validating proprietary technology (proof-of-concept or proof-of-value stage).
Good fit examples
- Carbon capture PoC (validating capture efficiency, testing at small scale)
- Clean energy technology (novel solar cell designs, energy storage systems, hydrogen production)
- Sustainable materials validation (testing new bio-based materials, recycled feedstock performance)
- Circular economy platform (technology platform for waste matching, material recovery)
- Climate tech sensors and monitoring (IoT for emissions tracking, environmental monitoring systems)
- Green manufacturing process (proprietary clean synthesis routes, low-waste production methods)
How much
- Up to S$500,000 funding support (milestone-based)
- Support level varies by technology complexity and commercial potential
- Processing time: 8–12 weeks (complex deep tech may take longer)
When
- Apply before starting PoC/PoV activities
- Requires proprietary technology with IP ownership
- Must demonstrate commercial potential
How (fast path)
- Define your cleantech innovation and IP position (what’s proprietary, what’s the market opportunity).
- Prepare PoC/PoV plan with technical milestones and success criteria.
- Document commercialization path (how will the technology generate revenue).
- Apply through Enterprise Singapore with technical narrative and business plan.
Where
- See more: Startup SG Tech
5) Productivity Solutions Grant (PSG)
Use PSG when: you need pre-approved sustainability software for ESG tracking, carbon accounting, or compliance.
Good fit examples
- Carbon and ESG management software (carbon footprint tracking, sustainability reporting, ESG dashboards)
- Energy management systems (real-time energy monitoring, optimization software)
- Supply chain traceability (sustainable sourcing verification, supplier ESG scoring)
- Environmental compliance tools (regulatory reporting, permit tracking)
How much
- Up to 50% of eligible costs for SMEs
- S$30,000 cap per application and S$30,000 annual cap per company (1 Apr–31 Mar)
When
- Apply before any payment or contract signing
- Processing time: ~6 weeks
How (fast path)
- Pick a pre-approved solution from the PSG catalogue (search: carbon, ESG, energy management).
- Get vendor quote addressed to your ACRA entity name.
- Submit via BGP with financials and quote.
Where
- See more: Productivity Solutions Grant (PSG)
Cleantech Business Scenarios & Which Grant to Use
| Business Scenario | Grant | Funding | Timeline |
|---|---|---|---|
| Cleantech startup developing proprietary carbon capture tech | EIS + Startup SG Tech | 400% tax deduction + S$500K | Tax claim + 8-12 weeks |
| Green manufacturer upgrading to energy-efficient production equipment | EEG | Up to S$30K–S$350K (70%) | 6 weeks |
| Startup pivoting to circular economy business model | EDG | Up to 70% (no cap) | 8-12 weeks |
| Deep tech startup validating renewable energy innovation | Startup SG Tech | Up to S$500K | 8-12 weeks |
| Cleantech company implementing ESG tracking software | PSG | Up to S$30K (50%) | 6 weeks |
| Sustainable materials startup doing R&D on bio-based alternatives | EIS | 400% tax deduction / S$20K cash | Tax filing |
| Factory retrofitting for green manufacturing certification | EDG + EEG | 70% + equipment support | 8-12 weeks |
Cleantech-Specific Pitfalls to Avoid
1. Starting before approval (EDG, EEG, Startup SG Tech)
- Do not sign equipment purchase orders, development contracts, or vendor agreements before receiving Letter of Offer
- Pre-incurred expenses are not eligible for reimbursement
- EIS is the exception — you claim after expenses are incurred
2. Technology not proprietary enough (Startup SG Tech)
- Must have clear IP ownership and differentiation
- Using off-the-shelf components without innovation won’t qualify
- Document your technical differentiation and patent strategy
3. R&D activities too vague (EIS)
- Must be systematic research seeking new knowledge or capabilities
- “General improvement” is too vague — be specific about scientific/technical objectives
- Keep detailed records of R&D activities and outcomes
4. Equipment not on pre-approved list (EEG Base Tier)
- Base Tier requires equipment from the pre-approved list
- Custom cleantech manufacturing equipment may need Advanced Tier (350+ tonnes CO2 savings)
- Verify equipment model qualifies before purchasing
5. Missing sustainability outcomes (EDG 70%)
- EDG offers 70% funding for sustainability projects, but you must demonstrate clear outcomes
- Quantify carbon reduction, energy savings, or waste reduction
- Include sustainability metrics in your project proposal
6. Wrong grant for your stage
- Pre-revenue startups: Consider EIS cash payout or Startup SG Tech
- Profitable companies: EIS tax deduction maximizes benefit
- Manufacturing scale-up: EEG for equipment, EDG for process transformation
7. Missing critical documents
- ACRA BizFile+ extract (current, must show your exact entity name)
- Financial statements (3 years for EDG; management accounts acceptable for startups)
- Technical documentation (for Startup SG Tech: IP position, technical roadmap)
- For EIS: detailed expense records, project logs, R&D reports
Related Guides & Resources
Other Industry Guides
- Grants for Manufacturing Businesses - Relevant for cleantech manufacturing and green production
- AI Grants for SMEs - Relevant for cleantech AI/ML applications
Scheme Details
- Enterprise Innovation Scheme (EIS) - Full Details
- Energy Efficiency Grant (EEG) - Full Details
- EEG Efficiency Standards Guide - Technical reference for efficiency standards
- Enterprise Development Grant (EDG) - Full Details
- Startup SG Tech - Full Details
- Productivity Solutions Grant (PSG) - Full Details
Decision & Application Guides
-
Startup SG Program Comparison - Compare Startup SG tracks
-
EIS vs DTD Decision Matrix - Compare innovation incentives
-
Singapore Grants Glossary - Key terms and definitions
-
Corppass Setup Guide - How to set up BGP access
Glossary (Quick Definitions)
- ACRA: Singapore’s business registry authority; your registered entity name is used on quotes/invoices.
- UEN: Unique Entity Number for your business.
- BGP: Business Grants Portal (where applications/claims are submitted for EDG, EEG, PSG).
- IRAS: Inland Revenue Authority of Singapore (where EIS claims are filed via mytax portal).
- PoC/PoV: Proof-of-Concept / Proof-of-Value (technical validation stages for Startup SG Tech).
- YA: Year of Assessment (tax year for EIS claims; YA 2026 covers income earned in 2025).
- Corppass: The login system used to access BGP.
Official Links
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