Do I need an account to vote?

Yes. Voting requires a registered GreenSweep account. Registration is free and takes under two minutes via email, WhatsApp, Facebook, TikTok, or Telegram.

How does my vote affect funding for projects?

Each vote cast during the active allocation period counts toward the proportional funding split. At the end of the period, GreenSweep distributes its project-funding pool across all active projects in proportion to their vote totals — a project that receives 20% of all votes in a cycle receives 20% of the funds available that cycle. GreenSweep’s current operating structure carries an initial 30% platform fee on advertising seed revenue; the Malta Purpose Foundation is structured to ratchet that fee down as rapidly as revenues allow. Even at the initial 30% fee level, overall project efficiency reaches 85–96% when corporate sustainability capital and matched funding — which flow 100% to projects — are included in the calculation.

How do I know my vote was recorded?

After you cast a vote, a confirmation message appears on screen. Your vote is also visible in your account history under “My votes.”

Can I change my vote?

Votes can be changed until the current allocation period closes. Return to this page, select a different project, and confirm. Only your most recent vote in each period counts.

What is the Tier 2 research panel?

The Tier 2 programme (“Amplify my impact”) is an optional research panel for users who want to contribute anonymised demographic data — age range, household size, market, environmental interest category — to environmental research partners. Revenue generated through these partnerships is directed to environmental projects via GreenSweep’s funding commitment. Tier 2 panel members participate with a 2× vote weight, reflecting the deeper signal their profile provides to the allocation model. Participation is entirely voluntary and independent of your access to any platform feature. Your name, email, and individual voting history are never shared with partners. You can withdraw from the panel at any time in account settings without any effect on your ability to vote or use GreenSweep.

How long does each allocation period last?

Allocation periods run monthly. The current period’s closing date is shown at the top of the vote page.

Vote for Impact

Your vote directs real funding to verified environmental projects. One vote per funding cycle.

How this works

You vote → advertisers and CSR partners fund the pool → the project with the most votes gets the biggest share. Each voter you bring grows the pool, and tilts the share toward your project.

Your vote is proof-logged →

You vote; advertisers fund the project.

Sign up free to cast your vote.

Your vote decides which project gets funded this month.

Every vote is proof-logged →

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Alpine Watershed Protection

Alpine glaciers are melting. GEOMAR scientists map the journey from mountaintop to seagrass meadow, tracking microplastics across Europe's watersheds.

Baltic Seaclimate research