TerraHash Energy

CLP Power began accepting feed-in tariff applications in May 2018, with payments of HK$3–5 per kilowatt-hour for eligible renewable electricity starting in October.

Regulations for rooftop solar installations on New Territories village houses were also relaxed. TerraHash's archive describes helping distributed rooftop projects connect solar generation to the grid.

In 2018, TerraHash established a computing and mining division and deployed efficient ASIC equipment, including Antminer S9-series units, drawing on Hong Kong's digital-asset ecosystem.

Its proposed green-computing model combined daytime rooftop solar consumption, the sale of surplus generation to the grid, and off-peak nighttime electricity to help manage the effects of the 2018 crypto bear market.

Hong Kong's subtropical climate created high cooling demands for dense computing equipment. In the second half of 2018, TerraHash's archive describes trials of single-phase immersion cooling.

Recovered heat was redirected through heat exchangers for greenhouse agriculture and industrial drying, with the project claiming a power usage effectiveness (PUE) below 1.05.

A green-computing node in Yuen Long reportedly started operating in October 2018, with a 200 kW rooftop solar array and modular immersion-cooled mining racks.

The installation was presented as an early demonstration of using distributed renewable electricity to directly support blockchain computing and lower the carbon intensity of operations.