Climate Drift

Climate Drift

Why Reed Hastings invested in water pumps

Affordable solar irrigation, sold on pay as you grow terms, is letting smallholder farmers in Africa water crops year round, boost yields, and build climate resilience without diesel or bank loans.

Skander Garroum's avatar
Skander Garroum
Nov 03, 2025
∙ Paid

👋 Welcome to Climate Drift: your cheat-sheet to climate. Each edition breaks down real solutions, hard numbers, and career moves for operators, founders, and investors who want impact. For more: Community | Accelerator | Open Climate Firesides | Deep Dives


Hey there! 👋
Skander here.

Africa doesn’t have a water problem. It has a finance problem that looks like a water problem.

Here’s a math problem: A solar pump costs $1,200. A smallholder farmer earns $600 per year. Rain comes when it wants, or doesn’t come at all. Diesel pumps burn through $40-80 per acre monthly. Banks won’t lend to someone with 2 acres and no collateral.

So 80% of African smallholders still farm like it’s 1950. Except now the world is 2 degrees hotter, rain patterns have collapsed, and droughts last longer.

The technology exists. Solar panels work. Pumps are reliable. Yields triple with year-round irrigation. But the infrastructure to make it affordable didn’t exist.

Until someone built it.

Take a solar panel, an IoT-enabled pump, agronomist support, and pay-as-you-grow financing. Wrap it into one product. Subsidize it with carbon credits sold to the Global North. Deliver it to farmers four hours from the nearest city.

$0.25 per day. No bank required. Triple your yield. Stay on your land.

Time for a Climate Drift Breakdown.

🌊 Let’s dive in


Free readers get the basics: Our take, 1 sentence pitch, Description, Funding, Problem, Market, and Impact.
Community members and Climate Drift subscribers also get Strategy and Differentiation, Progress, Competition, Team, curated Interviews, Roles and hiring, plus Key investors and Partners.

Apply for the Community here


Want the backstage view and the playbook to build your own? This breakdown came out of a live working session with our newest accelerator cohort. Join the next cohort: ship a real climate project, pressure-test your strategy with operators and investors, and get weekly sprints, templates, and introductions.

Apply Now


Can Pay-As-You-Grow irrigation unlock Africa’s farming potential?

Affordable solar irrigation, sold on pay as you grow terms, is letting smallholder farmers in Africa water crops year round, boost yields, and build climate resilience without diesel or bank loans.

🌊 The Climate Drift Take

Let’s talk about the brutal math of African farming: 1.5 billion people lack reliable electricity, smallholder farmers spend $2 billion annually on diesel pumps, and less than 5% of Africa’s cropland is irrigated. Meanwhile, unpredictable rainfall threatens the livelihoods of 570 million farming households.

Scaling solar irrigation isn’t just about cheaper panels. You need Pay-As-You-Grow financing that matches harvest cycles, carbon credit revenue to subsidize upfront costs, IoT systems to verify actual usage, and distribution networks that reach farmers four hours from the nearest city.

SunCulture is building that entire stack: own the product design, manufacture IoT-enabled pumps, finance through PAYG, monetize carbon credits, and deploy across six African countries with 50%+ market share.

The unit economics work: solar pumps deliver 3-5× yield increases and eliminate fuel costs, but $640-$1,200 upfront is prohibitive for farmers earning $600/acre/year.

🚀 1 Sentence Pitch

Sunculture bundles solar-powered irrigation, farm advisory, and climate financing to unlock year-round yields for millions of African smallholder farmers.

⚡ Company Description

TLDR: Founded in 2012, Sunculture designs, sells, finances, and services affordable solar irrigation kits, bundled with weather-smart advisory, for Africa’s 33+ million smallholder farmers.

Samir Ibrahim (NYU Stern) and Charlie Nichols (Baruch) met in NYC discussing climate change. Realized smallholder farmers (the world’s largest poverty group) were squeezed by unpredictable rainfall and expensive diesel pumps. Entered NYU competition (second place), booked one-way tickets to Kenya by year-end.

Started in Nairobi apartment-turned-warehouse with $5K savings + $200K from friends/family. Built prototypes for “telephone farmers” (middle-income urbanites with rural land) at $5K/system. Followed Tesla playbook: start expensive, maintain quality, drive costs down.

Today: 47,000+ systems deployed across Kenya, Uganda, Ivory Coast, Ethiopia, Zambia, Togo. $65M+ raised. 50%+ market share in smallholder solar irrigation. Systems now $640-$1,200 with IoT-enabled monitoring.

💸 Funding Raised

TLDR: $65M+ total raised including $27.5M Series B led by Netflix/Google founders, plus innovative carbon financing ($6.6M) and debt facilities ($12M+).

Series B (April 2024): $27.5M oversubscribed

  • Reed Hastings (Netflix Co-Founder), Eric Schmidt Foundation (former Google CEO)

  • InfraCo Africa: $12M strategic equity (PIDG member)

  • Acumen Fund + ARAF, EDF Group, Equator (follow-on investors)

Carbon Financing (2024-2025): $6.6M total

  • British International Investment: $2.1M + $4M follow-on (March 2025)

  • Shell Foundation: $0.5M

  • First-of-its-kind: monetizes future carbon sales to reduce pump costs 25-40% for 16,000+ farmers

Debt Facilities (2024-2025): $12M+

  • Mirova SunFunder-led syndicate + Nithio Financial Intermediary

  • Finances inventory and receivables

WaterEquity (September 2025): $5M

  • Water & Climate Resilience Fund (backed by Microsoft, Starbucks, Xylem, Ecolab, Reckitt, Gap)

Early Stage (2013-2018): $6M+

  • USAID Powering Agriculture: $2M grant (2016)

  • Friends/family: $200K, Personal savings: $5K

❓ Problem

TLDR: African farmers spend $2 billion annually on diesel pumps while 95% of cropland remains rain-dependent, creating a double squeeze of high energy costs and climate vulnerability.

The irrigation gap is massive. Less than 5% of Sub-Saharan Africa’s cropland is irrigated, compared to 20% globally. Meanwhile, 80% of African farmers are smallholders relying on increasingly unpredictable rainfall. Only 4% of Kenya’s agricultural land is under irrigation despite climate requiring it for 83% of the land.

Diesel is expensive and dirty. African farmers collectively spend $2 billion annually on diesel-powered pumps. Operating costs range from $40-$80 per acre monthly, consuming 10-20% of a smallholder’s income. Diesel pumps also emit significant CO2, contribute to indoor air pollution when stored improperly, and require constant fuel purchases that strain cash flow.

Manual irrigation is brutal. For farmers without pumps, irrigation means manual water collection, consuming 17+ hours per week primarily from women and girls. This labor burden prevents cultivation of high-value crops requiring regular watering.

Grid electricity isn’t coming. Over 600 million people in Sub-Saharan Africa lack electricity access. Even where grids exist, reliability is poor and extension to rural areas is economically unviable. Smallholder farms are last in line for infrastructure investment.

Climate change is accelerating the crisis. Rainfall patterns are becoming more erratic, dry seasons are lengthening, and droughts are intensifying. Without irrigation, farmers face total crop failure in bad years. The World Bank estimates that increasing irrigation by just 10% in Sub-Saharan Africa could boost agricultural production by 50%.

🌍 Market

TLDR: Africa’s solar water pump market is $90M in 2023, growing 11.7% annually to $193M by 2030, driven by 570M farming households, rising diesel costs, and government renewable energy mandates.

Total Addressable Market. Sub-Saharan Africa has 570 million smallholder farming households, the majority operating 1-3 acre plots. With average system prices of $640-$1,200, the theoretical TAM exceeds $360 billion. Realistically, the serviceable addressable market focuses on farmers with existing water sources (boreholes, rivers, wells) and ability to service debt, estimated at 50-100 million households.

Current Market Size. The Africa solar water pump market was valued at $90 million in 2023, with SunCulture controlling 50%+ market share in the smallholder segment. The broader African agricultural irrigation machinery market reached $187 billion in 2024, projected to hit $289 billion by 2030.

Growth Trajectory. Solar pump adoption is accelerating at 11.7% CAGR (2024-2030), driven by:

  • Diesel price volatility making solar ROI more attractive

  • Government subsidies and renewable energy mandates across Kenya, Ethiopia, Ghana, Togo

  • Falling solar panel costs (now <$0.20/watt in Africa)

  • PAYG financing models reducing adoption barriers

  • Carbon markets monetizing diesel displacement

🌱 Climate Impact & Potential

TLDR: Each SunCulture pump avoids 2.9 tons of CO2 annually while eliminating diesel use, increasing yields 3-5x, and saving 17 hours of manual labor weekly.

Emissions Reduction. Each solar pump displaces 2.9 tons of CO2 equivalent per year by eliminating diesel combustion. With 47,000 systems deployed, SunCulture has prevented approximately 136,000 tons of CO2 annually.

Carbon Credit Generation. SunCulture is the first African solar water pump provider with Verra-registered carbon credits. Their monitoring framework combines IoT telemetry data with field surveys to verify emissions reductions. The project targets 240,000 tons of CO2 reductions with the first crediting period ending in 2027. Carbon revenue enables 25-40% cost reductions, expanding the addressable market 4-5× according to pilot data.

Agricultural Productivity. Farmers using SunCulture systems report:

  • 3-5× crop yield increases through year-round irrigation

  • Ability to grow high-value crops (tomatoes, onions, capsicum) instead of low-value maize

  • Average revenues of $14,000/acre vs. $600/acre for rain-fed agriculture

  • Additional growing seasons (2-3 annual harvests vs. 1)

Water Efficiency. Solar drip irrigation reduces water usage by up to 80% compared to flood irrigation while targeting water directly to plant roots. This minimizes evaporation and runoff.

User's avatar

Continue reading this post for free, courtesy of Marco & Skander.

Or purchase a paid subscription.
© 2026 Marco Morawec & Skander Garroum · Privacy ∙ Terms ∙ Collection notice
Start your SubstackGet the app
Substack is the home for great culture