TENZING Natural Energy sustainability score: 31/100
Better than 8% of Food & Beverage (non-meat)
Making progress starts at 46. The highest score on SINK is 71.
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.
More about TENZING Natural Energy
It operates as a 30-person SME with outsourced manufacturing and holds B Corp certification.
Founded 2015Head office GBStaff 30 (2025 average, Companies House filed accounts)Website ↗
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. Scores are free. Nobody can pay to change a score, speed it up or hide it. Last verified October 2026.
That places TENZING Natural Energy joint 698th of 1,023 companies scored, and joint 45th of 51 in Food & Beverage (non-meat).
What is TENZING Natural Energy doing well, and where does it fall short?
Strongest on Controversies & Red Flags and Carbon Footprint: Operations (8/10, 5/10). Weakest on Energy Source and Emissions Trajectory (2/10, 3/10).
Where TENZING Natural Energy lost points
For each question that lost points, the evidence our public rubric looks for that we didn't find.
What would raise this score
- How clean its energy isMove to a renewable energy tariff or make a major efficiency investment.
- Whether its emissions are fallingShow its emissions are falling.
- Its effect on waterMonitor its water use and take measures to reduce it.
Every question that lost points
- Emissions from its own operations5/10No full Scope 1 and 2 figures worked out to the GHG Protocol.
- Emissions from its supply chain4/10Most of its supply-chain (Scope 3) emissions aren't measured.
- Whether its emissions are falling3/10No evidence its emissions are falling.
- How clean its energy is2/10No renewable energy tariff or major efficiency investment shown.
- Its effect on nature5/10Its effect on nature isn't measured or independently verified.
- How it uses materials and handles waste4/10No measurable waste or recycling targets reported publicly.
- Its effect on water3/10No monitoring of water use, or no measures to reduce it.
- Its climate targets3/10No specific targets with dates.
- How openly it reports5/10No dedicated sustainability role, board oversight or public report.
A score changes when the evidence does. We use new published evidence at the next rescore. Anyone can send us new evidence, free. How to send it.
How is TENZING Natural Energy's SINK score calculated?
Same ten questions for every company. No private weighting.
SINK = (0.3 × Base + 0.7 × Performance) × ScaleHas TENZING Natural Energy's score changed?
TENZING Natural Energy's score has moved from 32 to 31 across 2 recorded reviews, down 1 point.
- 32 → 31-126 October 2026
Initial public score 31 (publish-draft)
- Scored 329 October 2026
Initial score 32 (score-company publish)
What evidence is TENZING Natural Energy's score based on?
12 sources used in this assessment. All publicly available. Each row shows which of the ten questions it informed.
25% of them were published by TENZING Natural Energy itself; the rest come from independent sources.
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”
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How does TENZING Natural Energy compare with other food & beverage (non-meat) companies?
Where TENZING Natural Energy sits among food & beverage (non-meat) peers.
Among the 51 major food & beverage (non-meat) brands we've scored, TENZING Natural Energy is tied =45th of 51, with 2 others.
Who scores higher in Food & Beverage (non-meat)?
The 3 companies in the sector scoring nearest above TENZING Natural Energy.
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See the breakdown →Which companies moved this week, and why.
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