#energy

Power networks, railways, roads and vehicles can ignite vegetation through equipment faults, contact, sparks or hot components, especially during dangerous fire weather.

Almost all electricity a data-center draws leaves as low-grade heat at 30–40 °C, typically rejected to air. Neighbouring buildings burn gas to produce the same heat. Where reuse works it is substantial, but temperature, price, infrastructure, and regulatory gaps block it nearly e

PJM's independent market monitor attributed 38% of the latest capacity auction cost to data-centers. Speculative interconnection requests inflate queues further, and where cost-allocation rules are unchanged the resulting charges spread across all customers.

Residents near hyperscale data-centers bear concentrated cooling noise, water draw, generator emissions and grid cost shifts, while the compute benefits accrue regionally or nationally. US opposition groups grew from 396 to 833 across 49 states in three months.

Running software and AI models consumes electricity whose CO2 cost varies by grid and workload, but the default toolchain reports latency, cost and accuracy and almost never emissions. Invisible to the people who could reduce it, the footprint goes unmanaged and unoptimised.

data-centers consumed ~415 TWh in 2024 (~1.5% of global electricity), growing ~12%/year, with AI the primary driver. The IEA projects demand more than doubling to ~945 TWh by 2030. Computing is one of the few sectors where emissions are set to grow, straining grids and climate go

Utility-scale solar needs roughly 5–7 acres per MW, putting large arrays in direct competition with farmland, habitat, and communities. Local siting conflict and permitting friction — not raw land scarcity — are what throttle deployment speed.

Connect the facility's cooling loop to a district heating network under a contract that pays per MWh delivered at a market-referenced price. Stockholm's open market has ~20 suppliers; Odense delivers 215,000 MWh/year to over 12,000 homes using ammonia heat pumps.

Connect large loads sooner if they accept curtailment during scarcity hours. Modelling finds 76 to 126 GW of headroom in the 22 largest US balancing authorities at 0.25–1% of hours curtailed. Google has signed 1 GW of demand response but publishes no curtailment performance data.

Put customers above roughly 25 MW in their own rate class, obliged to pay for 85% of contracted capacity for 12–14 years with collateral and exit fees. After Ohio approved one, the utility's large-load forecast fell by half, revealing much of the queue as speculative.

Place accelerators on satellites in sun-synchronous orbit, drawing near-continuous solar power, rejecting heat through radiators, and linking satellites by free-space optical fabric. One GPU has flown; independent analyses put costs at least an order of magnitude above equivalent

Seal servers in nitrogen-filled modules on the seabed or floating platforms, using seawater as the heat sink and removing the facility from any residential area. Demonstrated at 24 MW in Shanghai. Microsoft proved the concept off Orkney, then declined to commercialise it.

Every emissions estimate multiplies energy by a carbon-intensity factor, but annual national averages miss regional and hourly variation. An API exposing live, historical, and forecast intensity—both average and marginal—per zone and per hour lets any tool convert energy to accur

Convert itemised cloud billing and usage records into energy and emissions figures using published hardware power coefficients and region-specific grid carbon intensity, producing a per-service, per-region footprint across multiple providers.

For code you operate, sample the energy drawn by CPU, GPU and RAM during execution, multiply by the carbon intensity of the local electricity grid, and log the resulting CO2 estimate next to other run metrics so it can be tracked and reduced.

Mount conventionally tilted, air-cooled panels on land a corridor already occupies — highway embankments, medians, canopies over lanes, tunnel roofs, noise barriers, and canal covers — reusing committed right-of-way while preserving the properties that make PV cheap and productiv

Lay PV in the gap between rails (removable panels, e.g. Sun-Ways) or integrate cells into replacement sleepers (e.g. Greenrail), reusing sealed rail corridors without new land. More promising than road-surface PV because trains pass intermittently rather than braking and grinding

Replace or overlay road/path surfaces with load-bearing PV panels that vehicles travel over. Every real-world pilot has under-delivered or failed: flat orientation, traffic wear, and 8–360× higher cost versus equivalent off-road panels make it a cautionary approach rather than a

A central plant chills water and pipes it underground to many buildings, replacing individual AC units. It rejects waste heat away from street level, cutting energy use per unit of cooling and the anthropogenic heat that feeds the urban heat island.

Upgrade trusted existing community buildings with solar and battery storage so they stay powered during outages and serve as dependable heating/cooling refuges. Gives at-risk residents a known fallback that doesn't depend on being checked on.

Virginia's State Corporation Commission approved a new GS-5 rate class for customers at or above 25 MW with a 75% load factor, effective 1 January 2027. Terms include a 14-year minimum contract, payment of at least 85%…

The Public Utilities Commission of Ohio approved a dedicated tariff for data-center customers on 9 July 2025, on application by AEP Ohio. Customers at or above 25 MW must pay for at least 85% of contracted capacity rega…

Amsterdam imposed a moratorium on new data-center development from 2019 to 2021, with heat reuse among the conditions placed on the sector. Operators offered waste heat free of charge. The moratorium was lifted without…

Waste heat from Meta's Odense facility is captured and lifted by ammonia heat pumps from 30–40°C to 70–75°C (the temperature Fjernvarme Fyn's network requires) and delivered into the municipal district heating system. I…

Starcloud-1 launched on a Falcon 9 from Cape Canaveral on 2 November 2025 into a 325 km orbit: a 60 kg satellite on an Astro Digital Corvus-Micro bus carrying a single Nvidia H100, with a design life of approximately 11…

Nautilus Data Technologies commissioned a Tier III certified floating barge data-center on the Stockton, California waterway in 2021, providing 6.5 MW of critical IT load across ~20,000 sq ft at rack densities of ~55 kW…

The only commercial-scale underwater data-center in operation as of 2026. Servers sit in sealed watertight units offshore from Lingang, positioned between phases of an existing offshore wind farm; construction completed…

Microsoft deployed a sealed, nitrogen-filled cylindrical vessel containing 864 servers to the seabed at 117 feet off Orkney, powered by the islands' wind and solar grid, and retrieved it two years later. Phase 1 had bee…

WattTime, founded in 2014 by UC Berkeley researchers and a subsidiary of Rocky Mountain Institute since 2017, provides Marginal Operating Emissions Rate (MOER, in pounds of CO₂ per MWh) via API in real-time, forecast, a…

Electricity Maps ingests data from TSOs, market operators, and government agencies via an open-source parser system, applies a flow-tracing algorithm to produce consumption-based (rather than production-based) carbon in…

Google Cloud Carbon Footprint is a provider-native emissions tool included as a deliberate contrast to open-source multi-cloud approaches. It reports both location-based and market-based scope 2 emissions computed on an…

Cloud Carbon Footprint (CCF) is an open-source, multi-cloud tool launched by Thoughtworks in March 2021. It reads itemised billing and usage data from AWS, Google Cloud, Azure and Alibaba, converts it to energy using he…

Kepler (Kubernetes-based Efficient Power Level Exporter) attributes energy to individual processes, containers, pods, and nodes in orchestrated environments, exporting results as Prometheus metrics. It draws power readi…

CodeCarbon is an open-source Python package that estimates CO2 from code execution. An EmissionsTracker (used as a context manager or decorator) samples CPU energy via Intel RAPL, GPU energy via NVIDIA NVML, and RAM e…

A ~32 km solar-canopy cycle highway runs down the median of a six-lane motorway between Daejeon and Sejong. Panels are mounted as a roof over the cycle lane — angled for optimal efficiency and air-cooled — rather than e…

Along the Jinan–Weifang expressway in Shandong, a reported 68 MW corridor-integrated solar system mounts conventional panels on slopes, medians, tunnel roofs, and service-area canopies — not on the running surface. This…

Bankset Energy tested sleeper-clip PV panels at Deutsche Bahn's Erzgebirge (Ore Mountains) test field, claiming ~0.1 MW per km and announcing 200 MW across 1,000 km in Saxony in 2018. No independent verification of the…

The "solar sleeper" variant of the rail PV concept: Greenrail integrates PV cells into replacement sleepers cast partly from recycled tyres and plastic (~35 t of waste repurposed per km), so the sleeper itself generates…

The first removable inter-rail PV system on a line open to traffic. In April 2025, Sun-Ways installed 48 panels (~18 kW) along a 100 m active stretch near Buttes, Neuchâtel, using a Scheuchzer track machine that unrolls…

SolaRoad opened a 72 m solar cycle path in Krommenie in October 2014 (later extended to ~90 m), operated by the SolaRoad consortium (TNO, Province of North Holland, and partners). Because the load was limited to cyclist…

Colas opened a ~1 km "Wattway" solar road (~2,800 m² of resin-encapsulated PV cells bonded onto an existing road surface) in Tourouvre-au-Perche, Normandy, in December 2016, co-developed with the French National Institu…

The most publicized test of surface-embedded PV. Solar Roadways Inc. installed ~30 hexagonal PV tiles (~13.9 m²) in a public square in Sandpoint, Idaho, funded by ~US$2.2M in Indiegogo crowdfunding plus US Department of…

Marina Bay is served by what operators describe as the world's largest underground district cooling system, operational since 2006 and built into a master-planned new downtown. Central chilled-water plants supply connec…

Minneapolis is piloting resilience hubs that incorporate solar energy and battery storage in three disadvantaged communities. The hubs are existing community buildings upgraded to keep power, and therefore heating/cooli…