energy-savings
(6)
Occuspace
Occuspace is a smart-building company that measures how physical spaces are actually used. Its plug-in sensors passively read ambient Bluetooth and WiFi signals - never cameras or personal data - to estimate real-time occupancy, foot traffic and dwell time, then feed the numbers into a dashboard and the free Waitz app. Founded in 2017 by three UC San Diego roommates, it now serves 100+ university campuses plus corporate and federal customers, helping them cut wasted space, save energy and plan facilities from data instead of guesswork.
Plentify
Plentify is a South African climate-tech company that builds AI-driven hardware and software to intelligently manage home energy use. Its flagship device, HotBot, is a smart controller for electric water heaters (geysers) that shifts heating to when power is cheaper and cleaner, while its SolarBot companion maximizes solar self-consumption. Founded in 2017 by Jon Kornik and Kailas Nair, Plentify links water heaters, batteries and solar inverters into a coordinated energy platform that cuts household electricity costs and eases pressure on strained grids. The company raised a roughly $15M Series A in 2025 to expand from South Africa into the UK, Australia and Brazil.
Public Grid
Public Grid is a climate-tech company building a software layer on top of the existing electric grid so households can switch to renewable energy and find savings without hardware, paperwork, or gatekeeping. Its platform sits on top of a user's utility account, brokers bulk green-energy contracts, applies local incentives, and surfaces cleaner, cheaper options in one click. Founded in 2022 (originally as Cottage Energy) and based in New York City, Public Grid says it serves 25,000+ households and is backed by Redbud VC and Hamilton Ventures.
Revert Technologies
Revert Technologies is a Maine-based climate-tech company that helps businesses cut electricity waste by turning things off. Its plug-and-play smart plugs and surge protectors pair with a cloud AI platform that learns usage patterns and utility prices to automatically manage plug loads, kill phantom power, and report energy and carbon savings. Born at Yale and hardened through the Roux Institute Techstars Accelerator, Revert turns the boring problem of standby power into measurable savings and lower emissions.
Dandelion Energy
Dandelion Energy is an Alphabet (Google X) spinout that designs, installs, and finances residential and multifamily geothermal heating and cooling systems. By drilling ground loops that tap the earth's stable temperature and pairing them with a proprietary heat pump, Dandelion replaces fossil-fuel furnaces and air conditioners with a single all-electric system that cuts home heating and cooling bills while eliminating on-site emissions. The company has grown into the largest home geothermal provider in the U.S., installing thousands of systems and partnering with the nation's largest production homebuilders and multifamily developers to make geothermal a default option for new construction.
Verdigris
Verdigris is a Mountain View-based AI and IoT company that turns raw electrical data into actionable intelligence for data centers, commercial buildings, and industrial facilities. By clamping high-frequency sensors onto electrical circuits and running proprietary AI algorithms on the resulting waveform data, Verdigris gives facility operators real-time visibility into energy consumption, power quality, and equipment health - detecting failures before they happen, recovering stranded capacity, and driving 20-50% reductions in energy spend. Founded in 2011, the company serves Fortune 500 customers including T-Mobile, Verizon, and NVIDIA across 17 countries.