Emission Reduction Services (Introduction)

The Mechanism that Enables Electricity Producers and Consumers to Claim the Production and Use of Electricity from Renewable Energy Sources

Emission Reduction Services or services for reducing green house gases emissions provided by WHA Utilities and Power Public Company Limited are designed to support organizations or businesses in decreasing greenhouse gases and pollutants released into the atmosphere. These services are essential for mitigating environmental impact and ensuring compliance with environmental laws. The tools that can be utilized for carbon offsetting include:

• REC (Renewable Energy Certificate)
• T-VER (Thailand Voluntary Emission Reduction)

REC VS T-VER

Today, many organizations are moving toward sustainability goals, whether by reducing greenhouse gas emissions or by switching to renewable energy, in order to address climate change. Two important instruments that are often discussed in this context are REC and T-VER. While both relate to environmental responsibility, they serve different purposes and are applied in different ways.

1. Definition
   • REC (Renewable Energy Certificate): A certificate that represents the generation of 1 megawatt-hour (MWh) of renewable electricity (from solar, wind, biomass,
   • T-VER (Thailand Voluntary Emission Reduction Program): A Thai national program that certifies carbon credits from projects that reduce or absorb greenhouse gas emissions (e.g., renewable energy, energy efficiency, waste management, forestry).
2. Purpose

   REC:

   • Proves that electricity used or purchased comes from renewable sources.
   • Used for claims like “100% renewable energy” or meeting targets under RE100 initiatives.

   T-VER:

   • Helps organizations offset greenhouse gas emissions.
   • Used for reporting, sustainability claims, and net-zero strategies.
3. What they measure?
   • REC: Measures renewable electricity generation (in MWh), not direct CO₂ reductions.
   • T-VER: Measures reduction or removal of greenhouse gases (in tons of CO₂ equivalent).
4. Unit of Measurement
   • REC: 1 REC = 1 MWh of renewable electricity generated.
   • T-VER: 1 credit = 1 ton of CO₂ reduced or removed.
5. Market Use
   • REC: Internationally recognized instrument; tracked through registries such as I-REC in many countries.
   • T-VER: Voluntary carbon market in Thailand; credits are issued and certified by TGO.