Starting a Solar Installation Business in the Philippines: Licences, Customers, Quoting and Grid Connection

Why the business works in the Philippines

Demand for rooftop solar in the Philippines is driven by electricity prices, outage frequency and net metering policy, not by environmental sentiment.

Decide who you sell to first. Residential, commercial and industrial are three different businesses rather than three sizes of one:

• Residential — high volume, low ticket, fast decisions but aggressive price shopping, high after-sales load;
• Commercial (restaurants, convenience stores, small factories, schools) — daytime consumption matches the generation curve, the fastest payback, and the segment worth targeting first;
• Industrial rooftops — large tickets but engineering review, working capital and long payment terms.

Daytime load share is the first qualifying question. The same array saves far more for a shop trading during daylight than for a household that is only home at night, because export credit is typically well below the retail purchase rate. The customer-side arithmetic is in is rooftop solar worth it in the Philippines; read it as how your prospect will judge your quote.

Company and credentials: four separate tracks

A company alone is not enough. Contracting, electrical design, grid connection and product compliance are four independent requirements.

Check foreign ownership rules before structuring. Ownership limits in renewable energy have been revised in recent years, including through Department of Energy circulars. Because these rules move and interpretation rests with the agencies, confirm in writing with the DOE and the SEC before setting up. General background is in foreign ownership limits explained and company registration steps.

Do not paper over contracting work as a pure supply agreement. If the contract covers installation, wiring and interconnection, it is construction work in substance. Mislabelling it can void insurance cover and expose the contract to challenge.

Three business models with very different cash flows

EPC contracting, equipment distribution and lease or power purchase arrangements demand different capabilities.

Start with commercial EPC. Cash flow is healthiest: commercial buyers have defined budgets, short decision chains and accept staged payments tied to contract signing, delivery and commissioning. Once a dozen verifiable references exist, move up.

Zero-upfront models are a trap for new entrants. You are financing the customer's system and recovering it over years. Without funding lines and credit judgement, two slow payers can break you. Build the collection basics first: chasing unpaid invoices and checking customer credit.

Where customers come from

Solar is a high-ticket, long-cycle sale. Advertising alone converts poorly; verifiable results and referrals do the work.

Your strongest sales asset is a comparable customer's before-and-after electricity bill. A convenience store of similar size and trading hours, with monthly bills shown before and after, outperforms any specification sheet. Build this into the product from the first project: with permission, keep the bills, generation data and photographs. See finding B2B customers in the Philippines and running Facebook ads for a Philippine business.

Site survey and quoting: absorb uncertainty before signing

Most loss-making solar projects fail at the survey stage, not on site.

Leased premises are the classic failure case. The tenant wants the system, the landlord owns the roof, and the remaining lease term is shorter than payback. Obtain the landlord's written consent and put removal or handover at lease end into the contract. See commercial lease terms in the Philippines.

The single most dangerous line in a solar quotation is "estimated monthly savings" — the customer reads a promise where you wrote an estimate. Output varies with shading, weather, cleaning frequency and the customer's own consumption habits, so state it as a range derived from twelve months of bills and site conditions, with the assumptions listed. It costs a paragraph now and saves a dispute later. Have your contract and quotation template reviewed for risk clauses →

Procurement: negotiate payment terms before price

The goal in procurement is not the lowest price but a supply chain that can honour the warranty you sell.

Warranties are layered: modules carry separate product and performance warranties, inverters have their own, and your workmanship warranty sits on top. If your supply channel cannot perform, every claim lands on you.

Build duties and VAT into the quote using the landed cost calculation. Preferential treatment may exist for certain renewable energy equipment, but eligibility and procedure follow the agencies' current rules; do not assume it when pricing.

Terms matter more than unit price. Paying suppliers on delivery while the customer's final payment waits on grid approval is how installers run out of cash. Put terms, returns and warranty response into the supply contract.

Installation and interconnection: approvals set the schedule

Rooftop installation takes days; the elapsed time from contract to energisation is governed by approvals.

1. Contract and design — drawings signed by a licensed electrical engineer;
2. Grid application — submitted to the local distribution utility with technical documents;
3. Local permits — per local building and electrical requirements;
4. Installation — mounting, modules, inverter, cabling and protection;
5. Inspection and meter change — bi-directional meter installed after the utility's inspection;
6. Energisation — the system operates and export is metered.

Put approval timelines in the contract as a condition, not a promise. Third parties control them. State that energisation depends on utility processing, and tie payment milestones to what you control, such as delivery and mechanical completion.

Safety and insurance are not optional. Rooftop work is work at height, with training, insurance and site rules to match, and employer exposure is significant. See employer liability insurance, handling workplace injuries and mandatory employee benefits.

After-sales, and how these businesses fail

Commissioning is where liability begins. Failures cluster around the same five causes.

Turn service into a second revenue line. Soiling measurably reduces output, and a hot, dusty, rainy climate makes periodic cleaning and inspection worthwhile. A renewable annual maintenance package stabilises cash flow and keeps you in front of the customer, which is where referrals originate.

Generation, payback, incentives and interconnection rules all move with regulation and tariffs. Date every claim and cite its basis, and state that the agencies' and utility's current rules prevail. This article is general information and does not constitute legal, tax or engineering advice; consult a licensed attorney, a registered electrical engineer, or confirm in writing with the relevant authority. For a structured look at licensing, structure and costs, start with a market entry and compliance assessment.