TENZING Natural Energy is a UK-based energy drink brand owned by Basecamp Brews Ltd, using natural guayusa and green tea as active ingredients.
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TENZING is a 30-person drinks brand with genuine supply-chain environmental work — Rainforest Alliance certified green tea, on-pack carbon labelling, and a mountain cleanup programme. But it relies entirely on offsets for its 'carbon negative' claim, lacks absolute emissions reporting, publishes no multi-year reduction data, and has minimal formal energy or water governance.
TENZING Natural Energy scores 31/100 (Below expectations) on SINK's independent climate assessment, scored from public data only. Fees pay for the review, never the result. Last verified October 2026.
That places TENZING Natural Energy joint 597th of 859 companies scored, and joint 43rd of 47 in Food & Beverage (non-meat).
Where TENZING Natural Energy sits among food & beverage (non-meat) peers.
Among the 47 major food & beverage (non-meat) brands we've scored, TENZING Natural Energy is tied =43rd of 47, with 1 other.
Its three lowest-scoring questions, and what the evidence didn't show.
No RE100 membership, power purchase agreement, or renewable tariff found.
No multi-year absolute emissions dataset published.
No standalone water consumption data, reduction targets, or stewardship programme published.
A score changes when the evidence does. We use new published evidence at the next rescore. Evidence that isn't public can count through an evidence review.
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Get in touch →Strongest on Controversies & Red Flags and Carbon Footprint — Operations (8/10, 5/10). Weakest on Energy Source and Emissions Trajectory (2/10, 3/10).
The 3 companies in the sector scoring nearest above TENZING Natural Energy.
Starbucks discloses comprehensive emissions data but is failing to reduce them—total emissions up 3% against a 50% reduction target by 2030.
See the breakdown →Monster's emissions are rising 17% year-on-year while absolute reduction targets remain unvalidated.
See the breakdown →Red Bull has no quantified emissions data, no supply chain transparency, and growing production volumes with zero evidence of absolute emissions decline.
See the breakdown →TENZING Natural Energy's score has moved from 32 to 31 across 2 recorded reviews, down 1 point.
Initial public score 31 (publish-draft)
Initial score 32 (score-company publish)
The formula and all 12 sources.
Same ten questions for every company. No private weighting.
SINK = (0.3 × Base + 0.7 × Performance) × Scale12 sources used in this assessment. All publicly available. Each row shows which of the ten questions it informed.
9 of 12 sources are independent of the company.
“Planet Mark also helped us measure parts of our downstream Scope 3, like our business travel, operational waste and transport distribution”
“Total exemption full accounts made up to 31 December 2024”
“Environmental Management 5.8 / Air & Climate 7.9”
“we are currently using 50% recycled and 50% raw aluminum … our mission is to use 70% recycled aluminum in our cans by 2023”
“Since 2020 we've been partnered with CarbonCloud: a platform which helps us calculate, track and minimise the carbon footprint of our products.”
“the company moved its manufacturing location to the UK in order to have a smaller carbon footprint”
“Today we sponsor Carry Me Back, a programme where trekkers each carry a kilo of waste back down the mountain to be recycled.”
“the green tea that TENZING uses to give you a much-needed caffeine boost is sourced from Rainforest Alliance Certified™ farms”
“Aluminum is one of the most recyclable materials on the planet, and every TENZING can is infinitely recyclable.”
“Heineken Uk Limited”
“Tenzing then funds local carbon offsetting initiatives to ensure that each can of their drink emits less than what it takes to produce”
“Company status: Active … Last accounts made up to 31 December 2024”
If you believe a source has been misread or a newer version exists, submit a challenge.
TENZING Natural Energy is a UK-based energy drink brand owned by Basecamp Brews Ltd, using natural guayusa and green tea as active ingredients. The company sources from Rainforest Alliance certified farms and Ecuadorian agroforestry. It operates as a 30-person SME with outsourced manufacturing and holds B Corp certification.
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