GRIDAEND

Energy Consulting

Energy Consulting
RE100 and a strategy for lower electricity costs

We combine self-consumption solar, storage, PPAs, and government support programs into the fastest and cheapest route to your target.
That includes preparing the renewable energy record your customers ask you for.

GRIDAEND's energy consulting analyzes a company's electricity tariff structure and load pattern, then compares the routes to renewable energy — on-site generation, PPAs, REC purchase, Green Premium — on cost, speed, and what each one is recognized for, and designs the combination that fits the company.

GRIDAEND's energy consulting analyzes a company's electricity tariff structure and load pattern, then compares the routes to renewable energy — on-site generation, PPAs, REC purchase, Green Premium — on cost, speed, and what each one is recognized for, and designs the combination that fits the company.

Site photograph related to Energy Consulting
Unit cost and supply reliability compared across RE100 procurement routes

If any of this sounds familiar

  • A customer is asking you to show renewable energy usage

    Demands for renewable energy and carbon data across the supply chain keep growing, driven by suppliers to large corporates and by exporters.

  • The electricity bill keeps climbing

    Industrial tariff increases and the way contracted capacity is charged push up fixed costs. Changing the load pattern alone can leave room for improvement.

  • You do not know what to do first

    On-site generation, PPAs, REC purchase, and Green Premium differ in cost, in speed, and in what they are recognized for. The order comes first.

  • You want to know whether you qualify for support

    Which support programs apply depends on your sector, your location, and the type of equipment. Miss the application window and you wait a year.

The routes to renewable energy, compared

Under Korea's K-RE100 framework, a company has five routes to choose from.

RouteHow it worksCharacterSuits
On-site generation (self-consumption)Install the plant at your own site and consume what it producesCuts the electricity bill at the same time. Needs space and upfront capitalSites with a roof or land and heavy power use
Direct PPAA power purchase agreement signed directly with a renewable generatorFixes the unit price over a long term. Carries scale and process burdenCompanies with high consumption and a clear long-term plan
Third-party PPAA contract with a generator, arranged through KEPCOEasier to enter than a direct PPAMid-sized and smaller companies making a first move
REC purchaseBuy Renewable Energy Certificates and have the volume recognizedImmediate, with no equipment. Exposed to price movementWhen a record has to be built quickly
Green PremiumPay KEPCO a premium and have the renewable usage recognizedThe simplest route. Check what it is recognized for in emissions termsWhen the first priority is simply having a record

Swipe the table sideways to see the rest

The choice is made by combining routes against cost, speed, recognized scope, and consumption. The detailed rules are those of the Korea Energy Agency.

Decide with the market in front of you

If you intend to comply by buying RECs, watch the price. On the 20 August 2026 trading day, the average price on the REC spot market was KRW 71,313 and volume was 281,855 RECs.

The direct PPA market is growing too. As of December 2025, cumulative PPA contracts in Korea were counted at 1,674.8 MW across 42 contracts.

But the regime changes in 2027. Once RECs stop being issued to new plants and everything runs through the contract market, the environment for sourcing RECs changes with it. A long-term contract signed now has to account for that.

Sources: Korea Power Exchange REC spot market, trading day 2026-08-20 / Korea RE100 Council tally (reported 2026-01) / National Assembly plenary passage (2026-08-20), as reported by Energy Daily, Newsis, and Korea Policy Briefing (2026-08-21)

What we do

  • Electricity bill review

    We analyze the last 12 months of bills and load data, check the tariff class, the contracted capacity, and the peak structure, and find what can be improved immediately.

  • Economics for self-consumption solar and storage

    We calculate installable capacity, energy yield, and self-consumption rate, and derive the payback period.

  • RE100 options compared

    The five routes compared on cost, speed, and recognized scope, then combined into a plan by target year.

  • Support program matching

    We find the national and local programs that fit your sector, location, and equipment type, and set out the deadlines and requirements.

  • Carbon neutrality and climate finance

    We review emissions accounting, the reduction roadmap, and the financing available around it.

What you receive

DeliverableContents
Energy assessment reportAnalysis of your current tariff structure and consumption pattern, the items to improve, and the expected saving
Compliance roadmapRenewable energy targets by year, the combination of routes, and the implementation schedule
Payback analysisUpfront cost, annual effect, and payback period compared across each investment option
Support program listThe programs you are eligible for, when to apply, and the documents required

Swipe the table sideways to see the rest

Benefit

What you get out of this

Revenue

Where the revenue comes from

  • A lower electricity bill

    Reviewing the tariff class and the contracted capacity alone sometimes leaves room. We start with what can be done without buying equipment.

  • An answer for your customers

    We prepare the renewable energy record and the data your supply chain asks for, so the relationship holds.

  • A shorter payback

    Support programs and financing combined bring the upfront burden down and shorten the recovery.

  • Risk spread

    Combining routes rather than betting on one spreads exposure to price movement and regulatory change.

  • Evidence for ESG reporting

    Data with a clear basis of calculation, usable in disclosures and external communication.

Actual amounts and rates of return vary with the conditions at the site. The assessment report works them out for your site.

FAQ

Frequently asked questions

The questions we are asked most about Energy Consulting.

Green Premium or buying RECs. Both produce a record immediately, with no equipment. The cost recurs every year, though, so over a longer horizon a combination of on-site generation and PPAs that lowers the unit price is often the better answer.

It depends on your sector, your location, and the type of equipment. We check whether an applicable program exists and set out the deadlines and requirements. Most take applications once a year, so the calendar matters.

It depends on your consumption pattern, your tariff, and how much you can install. Send us the last 12 months of bills and we will calculate it for your site. We do not put forward savings figures we cannot support.

The first consultation and the initial assessment are free of charge. If a detailed assessment or a separate report is needed, we set out the scope and the cost before starting.

Related pages

Rooftop Solar
Energy Storage
Corporate RE100 Inquiry

Free assessment

It starts with one line: the site address.

Leave the address and a way to reach you. We send back an initial assessment report within about five business days.
If the site stands up as a project, the report also sets out competitive EPC bids and financing terms.

Corporate RE100 inquirySee how we work

Available to landowners, building owners, or their authorized representatives · Results come back as a report