Idea Bank — Request for Climate Startups
Climate Tech Accelerator Bangladesh
An accelerator program mobilising early-stage climate startup capital in Bangladesh.

The ask
Build a Bangladesh-anchored climate tech accelerator that runs cohort programs for early-stage founders, takes small equity stakes (3–7%), and recycles returns into subsequent cohorts — modelled on Uruguay's Ivy and India's LetsVenture-adjacent programs but calibrated for Bangladesh's capital constraints and climate-vulnerable sectors.
Why now
Bangladesh is consistently ranked among the world's most climate-vulnerable countries, yet it has essentially no early-stage climate startup infrastructure — no dedicated accelerator, no climate-focused angel network, no public climate venture instrument. Green Climate Fund's country programme is allocating hundreds of millions through IDCOL and government channels that never reach seed-stage founders. The gap between GCF institutional capital and the ৳20–80 lakh a first-time founder needs has no institutional bridge. The UNDP SDG Accelerator has run one cohort; startups emerged with no follow-on path.
Why Bangladesh
Bangladesh's climate exposure creates a natural deal flow — flooding, salinity, heat, water stress — that generates genuine startup opportunities that do not exist in less climate-stressed markets. The country's garment-sector wealth has created a class of angels who have capital but no climate investment vehicle. A locally-run accelerator with credibility in that network can mobilise ৳5–15 crore per cohort from domestic sources alone, reducing dependence on foreign capital with its associated compliance drag.
As a business
The accelerator earns from three sources: program fees from anchor sponsors (IDCOL, HSBC Bangladesh, local conglomerates) running ৳50–150 lakh per cohort; equity stakes in 8–12 companies per cohort that generate carry over a 5–7 year horizon; and advisory fees from multilaterals (GIZ, UNDP, ADB) who pay for deal flow access and co-investment rights. The model is not self-funding on program fees alone — it requires a committed capital vehicle (a ৳10–20 crore seed fund) alongside the accelerator to deploy into graduates.
Economics
Move the sliders to model your own climate accelerator. Defaults are order-of-magnitude estimates — pressure-testing them is part of what a founder pitches us.
Model a climate tech accelerator
Clears its setup cost after ~2 months, then profit (volt) from there. Hover or tap the chart for any month.
Illustrative model — defaults are order-of-magnitude estimates from public data, not a forecast. Pressure-test every number before you build.
What ZEPH would back
We want a founding team that combines a Bangladesh-based operator who can recruit founders and run program logistics with an international climate-tech investor who brings deal credibility and global network access. ZEPH Ventures would be a natural co-anchor — we are looking for someone to operate what we are inclined to seed-fund ourselves.
Impact
An accelerator's direct carbon footprint is negligible; its impact is entirely portfolio-mediated. Third Derivative's portfolio of ~200 climate startups is projected to collectively avoid over 1 gigaton of CO₂e — roughly 5,000 tonnes per startup. A Bangladesh accelerator graduating 8–12 companies per cohort, focused on flood resilience, renewable energy, green construction, and sustainable agriculture, would build the country's first indigenous climate-tech company cohort — startups with deep contextual knowledge of South Asian climate stress that no international programme can replicate. The accelerator also builds the angel and institutional infrastructure that makes follow-on capital possible, compounding impact beyond the initial cohort.
Also being built elsewhere
Companies proving the model in other markets.
World's largest climate tech accelerator (RMI + New Energy Nexus joint venture); 200+ portfolio startups across 16 countries — the programme design and equity model Bangladesh should adapt.
Demonstrated that a structured, sponsor-funded climate accelerator cohort can operate globally with strong graduation outcomes and follow-on funding.
More Climate Finance ideas
Other climate businesses we want built.