Energy Efficiency grants — page 5
629 listings tracked right now · page 5 of 14
Programmes for industrial efficiency, building retrofits, heat recovery and demand reduction. Typical funders are UK DESNZ and the Industrial Energy Transformation Fund, the US DOE, EU LIFE and Horizon, and utility efficiency-obligation schemes. Listed below are the open energy efficiency grant calls in that landscape, taken from each funder's own notice and re-checked on every refresh.
Energy grants divide into two families that rarely share a form. Deployment pots such as the EU Innovation Fund, the US Department of Energy and the UK Net Zero Innovation Portfolio back kit that already works, usually at 30 to 50 per cent intervention rates against matched private capital. Earlier research calls, Horizon Europe and ARPA-E and Innovate UK among them, fund lower technology readiness at far smaller cheques. Applying to the wrong family is the most common reason a strong project scores badly.
This page lists open energy efficiency grants currently tracked by Raise Lens — 629 of them right now, sorted with the soonest deadline first. Every listing has been classified against the sustainability taxonomy rather than matched on keywords, so what appears here is energy efficiency work rather than anything whose description happens to mention it.
The funders publishing energy efficiency grants here include DeltaClime VT, Challenger, The Engine, among 2 others. Who is funding matters as much as what: eligibility, reporting burden and the realistic timeline to a decision vary far more between funders than between individual calls.
Geographic coverage on this page spans EUROPE, GLOBAL, ASIA, SE-ASIA, OCEANIA. Eligibility is usually tied to where the work happens or where the applying organisation is registered, and the two are not always the same — worth checking before investing time in an application.
Energy 2024: Accelerator cohort for seed-stage climate economy startups focused on energy innovation; three-month programme
••••• organisation
This is a three-month accelerator programme for seed-stage climate economy startups focused on energy innovation, offering mentorship, sprints, and utility pilot opportunities. The peer-selected winner receives a $25,000 non-equity award.
Energy 2025: Accelerator cohort for seed-stage climate economy startups focused on energy innovation; three-month programme
••••• organisation
This is a three-month accelerator programme for seed-stage climate and energy innovation startups, offering mentorship, sprints, and utility pilot opportunities with a $25,000 non-equity award for the peer-selected winner. It targets early-stage founders building clean-energy and climate-economy solutions.
Energy 2026: Accelerator cohort for seed-stage climate economy startups focused on energy innovation; three-month programme
••••• organisation
This is a three-month accelerator cohort for seed-stage startups developing energy innovation solutions within the climate economy, offering mentorship, sprints, and utility pilot opportunities. The peer-selected winner receives a $25,000 non-equity award.
Challenger Sustainability
••••• organisation
Non-equity accelerator programme supporting early-stage startups developing sustainability and green technology solutions across Europe. Provides mentorship, resources, and support to help founders scale cleantech and renewable energy ventures.
Residency at a US hard-tech accelerator
••••• organisation
The funder provides early-stage hard-tech companies with access to 220,000+ sq ft of wet lab, the funderering, and office space plus 1,880+ pieces of specialized equipment and expert staff support. This is a residency program designed to accelerate development of tough-tech ventures in climate, biotech, advanced manufacturing, energy, and materials sectors.
Impact Investing / Endowment Fund
••••• Fund
TAF invests its endowment fund in carbon-reducing and clean energy projects across the Greater Toronto and Hamilton Area, targeting low-carbon urban solutions to help the region achieve net-zero by 2050. Eligible applicants can seek financing for climate and clean energy initiatives in buildings, urban mobility, and related climate-tech sectors.
A successor climate-aligned investment fund focused on green and climate-aligned companies and projects
••••• organisation
Green Growth Fund 2 is a successor investment fund managed by Wermuth Asset Management that deploys capital into green and climate-aligned companies and projects across multiple sectors. The fund targets investors and portfolio companies seeking growth-stage capital in the clean technology and climate mitigation space.
A climate-aligned investment fund focused on green and climate-related investments across a portfolio of companies and projects
••••• organisation
Green Growth Fund 1 is an investment vehicle managed by Wermuth Asset Management that deploys capital into green and climate-aligned companies and projects across multiple sectors. The fund targets investors and portfolio companies seeking growth-stage capital in the clean technology and climate mitigation space.
Decarbonization Innovation Challenge Series
••••• organisation
An innovation challenge that sources and matches scalable decarbonization technologies to specific business and government decarbonization goals. Open to technology innovators and entrepreneurs whose solutions address real-world corporate and public-sector decarbonization briefs.
Technology Investment Funds
••••• organisation
This is an investment fund managed by domain expert asset managers that deploys capital into early-stage technology companies positioned to win the low-carbon economic transition, with a focus on Asia-Pacific markets. Eligible applicants are early-stage tech startups and companies developing cleantech and decarbonization solutions.
A European Utility's Startup Collaboration Programme
••••• organisation
Enel's innovation hub scouts startups and SMEs to co-develop Proof of Concept pilots in clean energy, grid solutions, and customer services, leveraging Enel's industrial assets and customer network. Winners receive supply contracts, financial rewards, and scale-up pathways rather than equity investment.
A US Venture Fund for Early-Stage Energy Technology
••••• organisation
Early-stage venture fund investing in digital and sustainable technology solutions for the global energy industry, with emphasis on Industry 4.0 technologies (IoT, AI, automation, AR/VR) and clean energy. Targets entrepreneurs primarily in the Midwest with pre-seed through early-stage cheques.
A US venture capital fund
••••• Fund
Early-stage venture fund investing in patent-driven deep tech and hard science companies across photonics, quantum, advanced materials, sensors, and climate/energy transition. Targets startups in Southwest USA and Northwest Europe with first close in March 2025.
A European Early-Stage Venture Fund
••••• organisation
The funder is a first-cheque investor backing pre-seed and seed-stage deep-tech founders across five sectors: Future of Work, Energy & Climate, Consumer, AI & Compute, and Industrial & Robotics. The fund targets pioneering technologies at the edge of the impossible that will become inevitable.
A US Asset Manager – Resource Efficiency Investment Vehicle
••••• organisation
The funder Partners is seeking mid-market private equity investments in Resource Efficiency businesses valued between $250m–$2.5bn, leveraging technology to drive sustainable value creation. This is a direct equity investment vehicle targeting established resource-efficiency companies, not a grant or donation programme.
a US green-energy investment fund
••••• organisation
Emerald Sprints / Energy Fund is an investment programme focused on clean energy technologies and sustainable industrial innovation within the energy sector. It targets companies and projects advancing renewable energy, energy efficiency, and decarbonization across industrial applications.
SpeedUp Energy Innovation / Energy Research Capital – Expansion CVC Fund
••••• organisation
A corporate venture capital fund targeting expansion-phase energy startups in Poland, co-created by the funder, Polski Fundusz Rozwoju, and SpeedUp Group. The fund invests €500k–$750k with follow-on capacity up to $1.25M in cleantech and energy innovation companies.
BRIdge Alfa Pre-Seed / Seed Fund
••••• organisation
Pre-seed/seed equity fund targeting early-stage energy-sector startups, offering cheques up to $250k from a ~$10m fund managed by the funder under Poland's NCBiR BRIdge Alfa programme. Designed to accelerate cleantech and renewable energy innovation at the pre-commercial stage.
Early Stage / Growth Investment Programme from an Energy Utility
••••• organisation
The funder invests directly from PGE Group's balance sheet in early-stage and growth-phase energy startups, offering cheques between $250k–$1.25m USD. The fund targets cleantech and energy innovation companies ready to scale.
Market Access Program
••••• organisation
LACI's Market Access Program connects early-stage cleantech startups from its portfolio with potential customers and strategic partners to accelerate commercialisation and market entry. The programme is a non-dilutive support service for portfolio companies at the pre-commercial and early commercial stages.
US Cleantech Impact Fund
••••• organisation
The LACI Impact Fund is an equity investment vehicle focused on cleantech startups developing solutions in clean energy, transportation, and climate-related technologies. It targets early-stage companies building commercial climate solutions with potential for market impact and financial returns.
A US cleantech incubation programme
••••• organisation
LACI Startup Programs is an incubation programme supporting early-stage cleantech startups across energy, transportation, and related sectors to scale climate innovation. The programme provides mentorship, resources, and support to help founders advance their climate solutions from concept to market.
Accelerate Programs (Accelerators, Incubators, Commercial Partnerships)
••••• organisation
The funder provides clean energy startups with training, mentorship, and access to networks through accelerators, incubators, and commercial partnerships to support local and international growth. The program targets early-stage clean energy companies across the renewable and climate-tech sectors.
Empire Technology Prize
••••• organisation
A prize competition recognizing and accelerating proven climate technology solutions operating in New York. Open to climate tech companies demonstrating validated, deployable solutions.
Affordable Housing
••••• organisation
This grant deploys climate solutions in the affordable housing sector across New York, likely funding energy efficiency, renewable energy, or climate-resilient retrofits in low-income housing. Eligible applicants likely include nonprofits, developers, and social enterprises working on affordable housing with climate co-benefits.
Deployment Grant Fund
••••• organisation
This grant provides deployment funding to growth-stage climate tech companies to accelerate real-world project implementation, with a focus on New York State. It targets companies ready to move from pilot to commercial deployment.
International Landing Pad
••••• organisation
This programme supports international climate tech companies in clean heating & cooling, building intelligence & retrofit, and energy infrastructure to enter and scale in the New York market. It is designed for early-to-growth stage cleantech startups and SMEs seeking market-entry support and scaling capital.
Deployment Accelerator
••••• organisation
An accelerator program designed to help growth-stage climate technology companies scale their proven solutions and expand market adoption across New York and beyond. The program targets companies ready to move from pilot to deployment, focusing on closing gaps in technology access and adoption.
Energy Digital Transformation Venture Fund
••••• organisation
The funder Fund invests in digital transformation solutions for the energy industry, supporting founders who apply digital tools to solve energy challenges such as data collection, process automation, and operational efficiency. The fund targets innovative companies across the energy value chain including oil-and-gas, utilities, clean energy, and data-center sectors.
Early-Stage Venture Fund
••••• organisation
The funder is an early-stage venture fund investing in Seed and Series A technology companies focused on SaaS, IT Infrastructure, and Climate & Energy sectors. The fund targets businesses with long-term growth potential and teams capable of creating positive market impact.
For ClimateTech
••••• organisation
Climate technology-focused programme supporting cleantech startups through both incubation and scale-stage tracks. Funds early-stage and growth-stage companies developing climate solutions across the clean energy and sustainability sectors.
Magenta Funds
••••• organisation
EEC Magenta Funds is a venture investment vehicle focused on industrial digitalization and energy sector technologies, targeting companies advancing digital solutions in energy and industrial decarbonization. The fund invests in early-to-growth stage companies but specific thesis, ticket size, and stage preferences are not publicly disclosed.
a Central and Eastern European venture fund investing in digital-industrial and energy technologies
••••• organisation
The funder invests in early-stage and growth-stage companies developing world-changing technologies that digitalize industry and the energy sector, including energy efficiency, cleantech, AI, IoT, and industrial software. The fund targets innovative entrepreneurs primarily across Poland and Central/Eastern Europe.
Impact Investment Portfolio
••••• organisation
The funder offers bespoke multi-asset investment portfolios targeting climate and sustainability outcomes across renewable energy, green infrastructure, energy efficiency, and decarbonisation startups, using proprietary impact-scoring methodology. This is an investment service for high-net-worth individuals and family offices seeking to deploy capital with measurable environmental and financial returns.
Data Centers & Digital Infrastructure
••••• organisation
The funder is offering investment capital for digital infrastructure projects, particularly data centers, that deliver reliable and lower-carbon power solutions to large digital loads in grid-constrained environments. The fund targets operators and developers of data center infrastructure seeking growth or project financing with an explicit sustainability angle.
Phase 2: Intermediate accelerator phase focused on helping startups become investible companies; details on funding…
••••• organisation
The funder's Phase 2 programme supports climate-tech and energy startups in transitioning from early-stage to investment-ready companies through structured acceleration. The programme is designed for startups that have completed initial validation and are preparing for Series A or growth-stage funding.
Phase 1: Accelerator programme for climate-tech and energy innovation startups
••••• organisation
An accelerator programme providing funding and support to early-stage energy innovation startups focused on climate-tech and energy solutions. The programme is designed to help startups advance from concept through to commercialization, though specific funding amounts and detailed focus areas are not fully disclosed.
Phase 0: Early-stage programme supporting diverse founders in climate tech and energy innovation; details on scope and…
••••• organisation
Early-stage accelerator programme supporting founders building climate tech and energy innovation solutions, with a focus on diversity. The programme provides support to pre-seed and seed-stage companies in the clean energy and climate technology sectors.
Boutique Venture Fund
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The funder is a boutique venture firm investing equity in purpose-led, mission-driven companies at early stages across renewable energy, healthcare, sustainability, and consumer sectors. The fund targets founders tackling meaningful challenges in energy transition, health innovation, and sustainable business models.
Infrastructure investments in energy and ecological transition projects, including energy performance contracts on industrial sites
••••• organisation
This grant funds infrastructure investments in energy efficiency and ecological transition projects, including energy performance contracts on industrial sites. It targets organizations implementing renewable energy, energy efficiency, and environmental sustainability initiatives.
Product Impact Fund
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A 6-month accelerator program investing $142,500 cash plus $60,000 in services and hardware into early-stage hardware startups building physical products in Energy Tech, MedTech, Sustainable Manufacturing, and Industrial IoT. The program targets pre-revenue and prototype-stage companies with equity investment (6.5%) and 18 months of follow-on support.
Innovate UK Clean Start
••••• organisation
This is a partnership programme between Innovate UK and the funder that provides funding to early-stage clean technology startups working in clean energy and sustainability. The programme supports companies developing innovative solutions in the clean energy and climate-tech sectors.
ACRE: Incubator programme focused on clean energy and climate tech startups, supporting early-stage companies through an innovation hub
••••• organisation
ACRE is an incubator programme that supports early-stage clean energy and climate technology startups through mentorship, resources, and network access. It is designed for founders and teams building solutions in the clean energy and climate tech sectors.
Grants for cost-effective greenhouse gas emissions reduction at speed and scale
••••• Foundation
This grant funds cost-effective solutions to reduce greenhouse gas emissions at scale, with a focus on electric grid transmission and low-carbon energy initiatives. It targets organizations developing scalable, economically viable climate mitigation technologies and infrastructure.
Spark+ Africa Fund
••••• organisation
Impact fund investing in private debt instruments for energy access and clean cooking solutions across Africa. Targets companies and projects advancing renewable energy and clean cooking technologies in underserved African markets.
Improved Cookstoves Initiative
••••• Fund
This grant funds the deployment of fuel-efficient, cleaner cookstoves to women and families in East Africa, supported by a circular carbon finance model that shares profits with communities. It targets energy access, climate mitigation, and gender equity simultaneously.
European Energy Efficiency Fund
••••• organisation
This is a Luxembourg-registered investment fund managed by Gresham House Europe AG that deploys capital into energy efficiency infrastructure projects across Europe. It targets professional and well-informed investors seeking exposure to the energy efficiency sector through a structured investment vehicle.
An OECD Energy Transition Investment Fund
••••• organisation
SETF is a Luxembourg-registered investment fund managed by Gresham House Europe AG that deploys capital into energy transition infrastructure across OECD countries, including solar, wind, energy storage, and energy efficiency projects. The fund is open exclusively to professional and institutional investors seeking to participate in renewable energy and decarbonization infrastructure.