Low-tech Magazine sustainability score: 44/100

No formal GHG Protocol calculation exists. However, Low-tech Magazine has published a detailed self-assessment of its server's environmental footprint: the web server (an Olimex A20 drawing 1–2.5W) generates approximately 9 kg CO₂e per year from the embodied energy of its hardware (solar panel, battery, charge controller, PCBs) amortised over estimated lifetime, as calculated in the January 2020 article 'How Sustainable is a Solar Powered Website?'. The organisation is a 1–3 person operation with no office, no vehicles, and no industrial processes. Total operational Scope 1 is effectively zero (no fossil fuel combustion owned). Scope 2 is zero (server runs entirely off-grid solar). Estimated total operational footprint is under 50 kg CO₂e/year for the entity itself. No third-party verification exists, and the methodology is self-developed rather than GHG Protocol-aligned. The 2025 'Compressed Book Edition' article provides additional footprint comparisons, confirming the server figure of 9 kg CO₂e/year. For an entity of this size with near-zero physical impact, a score of 5 reflects the self-calculated data and demonstrated awareness, without the formal third-party verification that would push it higher.

No formal Scope 3 inventory exists. However, the supply chain for this entity is inherently minimal: there are no employees, no offices, no physical retail, and no complex manufacturing. The primary supply chain items are: (a) hardware for the solar server (solar panel, battery, charge controller, PCBs — embodied emissions included in the server's 9 kg CO₂e/year figure), (b) printed books distributed via an external publisher, and (c) personal energy use of the author working from home. The 2025 'Compressed Book Edition' article explicitly analyses the lifecycle carbon of the book products, calculating 6.7–10.1 kg CO₂e for the three-volume paperback set and 2.48–3.70 kg CO₂e for the compressed edition. This is a rare example of an SME proactively assessing its product-level supply chain footprint, even informally. Reader device emissions are acknowledged as the dominant factor in the website's total footprint but are external to the organisation. Overall supply chain impact is estimated under 500 kg CO₂e/year for the whole operation including books. Score of 4 reflects: simple, short supply chain with documented awareness and product-level estimates, but no formal GHG Protocol Scope 3 methodology.

No formal multi-year emissions inventory exists. However, the trajectory evidence is strong by proxy. The solar-powered website launched in September 2018 represented a structural reduction in emissions versus the prior grid-powered hosting arrangement. The server has consistently operated at 1–2.5W and the hardware footprint of ~9 kg CO₂e/year has remained stable or improved as newer, lower-embodied-energy hardware has been considered. The 2023 'Rebuilding a Solar Powered Website' article documents ongoing efforts to maintain and improve the design. The 2025 compressed book edition demonstrates active effort to reduce the footprint of physical products. The organisation is stable in size (1–3 people), with no growth in energy-consuming infrastructure. Because the physical footprint is already near-zero and has been structurally reduced (from grid to solar hosting since 2018), and book product footprints are being actively minimised, a score of 6 is appropriate: evidenced reduction via proxy data and structural changes, even without a formal year-on-year GHG inventory.

The website server runs 100% on solar power via an off-grid solar panel installation on the author's balcony in Barcelona — there is no grid connection for server operations at all. The system comprises a 50W solar panel (upgraded from original configuration) with battery storage, and the server draws only 1–2.5W. This is genuine on-site renewable generation with no grid fallback, representing a higher standard than a green tariff: the system physically cannot draw fossil-fuel electricity. The site accepts intermittent downtime rather than adding battery capacity that would increase embodied fossil emissions — a deliberate design choice documented in the 2018 and 2020 articles. The author's personal energy use (home office) is not documented as renewable, which prevents a score of 10, but the primary operational energy source (the server) is demonstrably 100% solar. This is among the most rigorous energy sourcing approaches found in the media/publishing sector.

Low-tech Magazine has negligible direct nature impact: no land use, no manufacturing, no deforestation risk, no chemical use, and no significant physical supply chain. The printed books use paper, but the 2025 article acknowledges the supply chain impact of industrial book publishing including 'wood harvesting, pulp and paper production, printing, ink-making, and lots of shipping.' The compressed edition is explicitly designed to reduce material use. No TNFD disclosure exists, but for an entity of this scale, formal TNFD reporting is not expected. The organisation demonstrates active awareness of nature-related impacts through its published research and product design choices. The editorial content itself — the magazine's primary output — extensively covers sustainable resource use, ecosystem preservation, and low-impact technology, though editorial content does not constitute operational nature performance. Score of 6 reflects negligible physical nature impact with demonstrated awareness and active supply chain minimisation via product design.

The organisation's resource use is structurally minimal. The website uses no physical materials beyond the solar server hardware. The server is designed for longevity and repairability (simple components: Olimex A20 board, lead-acid or lithium battery, solar panel). The website design itself eliminates digital waste — no database, no cookies, no ads, dithered images to reduce data transfer. For printed books, the 2025 'Compressed Book Edition' article documents an active effort to reduce physical weight and thus material use: the compressed edition weighs 929g versus 2,531g for the three-volume set, representing a 63% reduction in material per equivalent content unit. No formal circular economy targets or supplier sustainability requirements are documented, and the book printing supply chain is standard commercial publishing. Score of 7 reflects demonstrably minimal resource use with active, measurable reduction in physical product materials and design-led digital minimalism, but without formal circularity programmes.

Water impact is negligible for this entity. There is no industrial process, no data centre cooling, no manufacturing, and no significant chemical use. The operation is a home-office arrangement in Barcelona. The server is air-cooled passively (the hardware draws only 1–2.5W and generates minimal heat). No water consumption data is published, but for a 1–3 person digital publication, water use is essentially personal domestic consumption with no organisational procurement footprint beyond the embodied water in hardware. There is no evidence of water pollution risk. Barcelona is in a water-stressed region, and the organisation's low-energy digital approach avoids the significant water consumption associated with conventional data centres (which use evaporative cooling). Score of 6 reflects genuinely negligible water impact with demonstrated awareness of resource efficiency through the system design, but without formal water consumption monitoring.

No formal SBTi commitment, no CDP submission, and no formal net-zero target exists. The organisation is not registered on any public target-setting platform. However, the operational design of the organisation functions as a de facto commitment: the server has been solar-powered since 2018 with a deliberate design philosophy of minimising energy and material use, and this commitment is documented publicly. The compressed book edition (2025) represents an ongoing research commitment to reducing the publication's footprint. No offsets are used — the organisation's approach is reduction-first by design, which is the correct approach for an entity of this size. The absence of formal targets is appropriate given the scale (SBTi targets are designed for larger organisations), but no measurable forward-looking reduction targets with timelines are published. Score of 5 reflects a clear reduction-first operating philosophy with measurable outcomes, but without formal target-setting infrastructure.

Transparency is a defining characteristic of this operation. The solar website publishes a live power page (solar.lowtechmagazine.com/power/) showing real-time battery charge, power supply, and demand data — an extraordinary level of operational transparency not found in most organisations. The January 2020 article provides a detailed methodology for the server's embodied energy and carbon calculations. The 2025 book edition article quantifies the carbon footprint of physical products. The founder is personally identifiable as the decision-maker and is publicly accountable. No formal governance structure, TCFD disclosure, or board oversight exists — appropriate given the micro-enterprise scale. Score of 7 reflects exemplary operational transparency (live energy data, published methodology, product-level footprint analysis) that exceeds what most SMEs and many larger organisations provide, without the formal governance structures expected at larger scale.

Starting score: 8. No environmental controversies, regulatory actions, fines, or greenwashing allegations have been found in any search. No lobbying activity of any kind — the organisation has no trade association memberships, no political donations, and no documented engagement with policy processes in either direction. No fossil fuel clients, no enabled emissions concern. The business model (solar-powered digital publication funded by Patreon donations and book sales) has no structural exposure to fossil-sector activity. Multiple independent sources (Columbia Journalism Review, New Republic, Wikipedia, LACMA, kingkong-mag) confirm the organisation's environmental credentials without controversy. The editorial content actively promotes sustainability and low-tech solutions, which constitutes documented public climate advocacy in the form of published research and journalism. This qualifies for a +1 uplift under the positive climate advocacy clause (publicly documented, substantive, published policy-adjacent research). Final score: 9. Score cannot reach 10 as the live power page and self-reporting, while excellent, are not subject to independent third-party verification.